Analysis Report document-1429954472.xls

Overview

General Information

Sample Name: document-1429954472.xls
Analysis ID: 384830
MD5: de9de1ff91dd0501f1405ce027fb5941
SHA1: 826804c571db7b1c892160c8c4c05c2d5d015d63
SHA256: 26acece82b024fc2b5306a52189db24a8742c11cc9ebbc84ab6a5dca8672bc0c
Tags: SilentBuilderxls
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
Yara detected hidden Macro 4.0 in Excel
Allocates a big amount of memory (probably used for heap spraying)
Document contains embedded VBA macros
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
Uses a known web browser user agent for HTTP communication
Yara signature match

Classification

AV Detection:

barindex
Multi AV Scanner detection for submitted file
Source: document-1429954472.xls ReversingLabs: Detection: 47%
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\rundll32.exe
Allocates a big amount of memory (probably used for heap spraying)
Source: excel.exe Memory has grown: Private usage: 4MB later: 47MB
Potential document exploit detected (performs DNS queries)
Source: global traffic DNS query: name: fastswitch.org
Potential document exploit detected (performs HTTP gets)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 47.244.191.15:80
Potential document exploit detected (unknown TCP traffic)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 47.244.191.15:80

Networking:

barindex
Uses a known web browser user agent for HTTP communication
Source: global traffic HTTP traffic detected: GET /ds/0702.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: fastswitch.orgConnection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /ds/0702.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: fastswitch.orgConnection: Keep-Alive
Source: rundll32.exe, 00000003.00000002.2101785955.0000000001BA0000.00000002.00000001.sdmp String found in binary or memory: Please visit http://www.hotmail.com/oe to learn more. equals www.hotmail.com (Hotmail)
Source: unknown DNS traffic detected: queries for: fastswitch.org
Source: global traffic HTTP traffic detected: HTTP/1.1 503 Service UnavailableDate: Fri, 09 Apr 2021 20:09:42 GMTServer: Apache/2.4.6 (CentOS) PHP/5.6.31X-Powered-By: PHP/5.6.31Content-Length: 79Connection: 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 64 73 2f 30 37 30 32 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 /ds/0702.gif was not found on this server.
Source: document-1429954472.xls String found in binary or memory: http://fastswitch.org/ds/0702.gif
Source: rundll32.exe, 00000003.00000002.2101785955.0000000001BA0000.00000002.00000001.sdmp String found in binary or memory: http://investor.msn.com
Source: rundll32.exe, 00000003.00000002.2101785955.0000000001BA0000.00000002.00000001.sdmp String found in binary or memory: http://investor.msn.com/
Source: rundll32.exe, 00000003.00000002.2102003804.0000000001D87000.00000002.00000001.sdmp String found in binary or memory: http://localizability/practices/XML.asp
Source: rundll32.exe, 00000003.00000002.2102003804.0000000001D87000.00000002.00000001.sdmp String found in binary or memory: http://localizability/practices/XMLConfiguration.asp
Source: rundll32.exe, 00000003.00000002.2102003804.0000000001D87000.00000002.00000001.sdmp String found in binary or memory: http://services.msn.com/svcs/oe/certpage.asp?name=%s&email=%s&&Check
Source: rundll32.exe, 00000003.00000002.2102003804.0000000001D87000.00000002.00000001.sdmp String found in binary or memory: http://windowsmedia.com/redir/services.asp?WMPFriendly=true
Source: rundll32.exe, 00000003.00000002.2101785955.0000000001BA0000.00000002.00000001.sdmp String found in binary or memory: http://www.hotmail.com/oe
Source: rundll32.exe, 00000003.00000002.2102003804.0000000001D87000.00000002.00000001.sdmp String found in binary or memory: http://www.icra.org/vocabulary/.
Source: rundll32.exe, 00000003.00000002.2101785955.0000000001BA0000.00000002.00000001.sdmp String found in binary or memory: http://www.msnbc.com/news/ticker.txt
Source: rundll32.exe, 00000003.00000002.2101785955.0000000001BA0000.00000002.00000001.sdmp String found in binary or memory: http://www.windows.com/pctv.

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" to unlock the editing document downloaded from the internet.y 0Protected View This
Source: Screenshot number: 4 Screenshot OCR: Enable content" to perform Microsoft Word Decryption Core to start the decryption of the document.
Source: Screenshot number: 8 Screenshot OCR: Enable editing" to unlock the editing document downloaded from the internet.y 0Protected View This
Source: Screenshot number: 8 Screenshot OCR: Enable Content X "" - (" jR " ^ Docu&nt THIS STEPS ARE REQUIRED TO FULLY DECRYPT THE DOCUMENT,
Source: Screenshot number: 12 Screenshot OCR: Enable Content X J315 " '" jR " A B C D E F G H I J K L M N O P Q R S L=j 301 302 303 304 3
Found Excel 4.0 Macro with suspicious formulas
Source: document-1429954472.xls Initial sample: EXEC
Document contains embedded VBA macros
Source: document-1429954472.xls OLE indicator, VBA macros: true
Yara signature match
Source: document-1429954472.xls, type: SAMPLE Matched rule: SUSP_Excel4Macro_AutoOpen date = 2020-03-26, author = John Lambert @JohnLaTwC, description = Detects Excel4 macro use with auto open / close, score = 2fb198f6ad33d0f26fb94a1aa159fef7296e0421da68887b8f2548bbd227e58f
Source: rundll32.exe, 00000003.00000002.2101785955.0000000001BA0000.00000002.00000001.sdmp Binary or memory string: .VBPud<_
Source: classification engine Classification label: mal72.expl.evad.winXLS@3/5@1/1
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Desktop\F0EE0000 Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Temp\CVRD7C8.tmp Jump to behavior
Source: document-1429954472.xls OLE indicator, Workbook stream: true
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Windows\System32\rundll32.exe Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\rundll32.exe rundll32 ..\iojhsfgv.dvers,DllRegisterServer
Source: document-1429954472.xls ReversingLabs: Detection: 47%
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\rundll32.exe rundll32 ..\iojhsfgv.dvers,DllRegisterServer
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process created: C:\Windows\System32\rundll32.exe rundll32 ..\iojhsfgv.dvers,DllRegisterServer 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: 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
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\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

HIPS / PFW / Operating System Protection Evasion:

barindex
Yara detected hidden Macro 4.0 in Excel
Source: Yara match File source: document-1429954472.xls, 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: 384830 Sample: document-1429954472.xls Startdate: 09/04/2021 Architecture: WINDOWS Score: 72 14 Multi AV Scanner detection for submitted file 2->14 16 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->16 18 Found Excel 4.0 Macro with suspicious formulas 2->18 20 2 other signatures 2->20 6 EXCEL.EXE 85 40 2->6         started        process3 dnsIp4 12 fastswitch.org 47.244.191.15, 49165, 80 CNNIC-ALIBABA-US-NET-APAlibabaUSTechnologyCoLtdC United States 6->12 22 Document exploit detected (UrlDownloadToFile) 6->22 10 rundll32.exe 6->10         started        signatures5 process6
  • 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
47.244.191.15
fastswitch.org United States
45102 CNNIC-ALIBABA-US-NET-APAlibabaUSTechnologyCoLtdC false

Contacted Domains

Name IP Active
fastswitch.org 47.244.191.15 true

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://fastswitch.org/ds/0702.gif false
  • Avira URL Cloud: safe
unknown