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Analysis

  • max time kernel
    123s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2024, 18:15

General

  • Target

    Teklif_PDF.exe

  • Size

    901KB

  • MD5

    fe3c062c09ea9fc35048f708cb95ecb1

  • SHA1

    118dbd2be3e9033b57282cb1c3e188d3c3141364

  • SHA256

    dda809f369a6369d2d26e75ff6cf321d2fe052f3eb0074f227065906bb2af531

  • SHA512

    80eec66e3e4beb210f7e94a4ffcb82f37a1d3ff07e7bd4599676233ed3585e2d51b81359e3f40f55bb7009bde5e9f3cd31624ba0a8f8645f8e31d4de5ebdefad

  • SSDEEP

    12288:GSpgdcAijOeKiMd3CRKoeSW/Z24gvar6iUUJGl3HxIE:GAAMKiO3y98EoLJGJF

Malware Config

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
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 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.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4452
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5004
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\lFUADIVKfDRpV.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2456
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lFUADIVKfDRpV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB18D.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3572
    • C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe"
      2⤵
        PID:3696
      • C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe
        "C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:4776

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kfojuctc.c3s.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpB18D.tmp

      Filesize

      1KB

      MD5

      27f16b490d4f3275f4593ab7606de1cc

      SHA1

      119d4c9cfce7fb3814fcc2514313c342f6184ffe

      SHA256

      879365e177960224cd44f01ddc0877db83d5c35f67c6c2a55ce23c1f0b5fec08

      SHA512

      6399ee04bf6e8e99481ffc664c0da6708b8bfdf4cc676b9aec3056e5a512b5d497f5bbfdd1fa4b67b0eed1eb762f6582a51926c85fec59cbdd46f94f1e5d65ea

    • memory/2456-77-0x00000000073C0000-0x0000000007456000-memory.dmp

      Filesize

      600KB

    • memory/2456-79-0x0000000007370000-0x000000000737E000-memory.dmp

      Filesize

      56KB

    • memory/2456-22-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/2456-80-0x0000000007380000-0x0000000007394000-memory.dmp

      Filesize

      80KB

    • memory/2456-81-0x0000000007480000-0x000000000749A000-memory.dmp

      Filesize

      104KB

    • memory/2456-49-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/2456-24-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/2456-82-0x0000000007460000-0x0000000007468000-memory.dmp

      Filesize

      32KB

    • memory/2456-63-0x0000000075720000-0x000000007576C000-memory.dmp

      Filesize

      304KB

    • memory/2456-86-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/4452-3-0x0000000004F00000-0x0000000004F92000-memory.dmp

      Filesize

      584KB

    • memory/4452-10-0x000000000A010000-0x000000000A0AC000-memory.dmp

      Filesize

      624KB

    • memory/4452-0-0x0000000074EAE000-0x0000000074EAF000-memory.dmp

      Filesize

      4KB

    • memory/4452-2-0x00000000055A0000-0x0000000005B44000-memory.dmp

      Filesize

      5.6MB

    • memory/4452-9-0x0000000006630000-0x00000000066BE000-memory.dmp

      Filesize

      568KB

    • memory/4452-8-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/4452-7-0x0000000074EAE000-0x0000000074EAF000-memory.dmp

      Filesize

      4KB

    • memory/4452-1-0x0000000000440000-0x0000000000526000-memory.dmp

      Filesize

      920KB

    • memory/4452-6-0x00000000051B0000-0x00000000051CC000-memory.dmp

      Filesize

      112KB

    • memory/4452-5-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/4452-47-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/4452-4-0x0000000004FD0000-0x0000000004FDA000-memory.dmp

      Filesize

      40KB

    • memory/4776-88-0x0000000006D60000-0x0000000006DB0000-memory.dmp

      Filesize

      320KB

    • memory/4776-31-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/4776-87-0x0000000006ED0000-0x0000000007092000-memory.dmp

      Filesize

      1.8MB

    • memory/5004-15-0x00000000021C0000-0x00000000021F6000-memory.dmp

      Filesize

      216KB

    • memory/5004-50-0x0000000006010000-0x000000000605C000-memory.dmp

      Filesize

      304KB

    • memory/5004-48-0x0000000005AA0000-0x0000000005ABE000-memory.dmp

      Filesize

      120KB

    • memory/5004-62-0x0000000005FC0000-0x0000000005FDE000-memory.dmp

      Filesize

      120KB

    • memory/5004-73-0x0000000006CA0000-0x0000000006D43000-memory.dmp

      Filesize

      652KB

    • memory/5004-51-0x0000000006C60000-0x0000000006C92000-memory.dmp

      Filesize

      200KB

    • memory/5004-52-0x0000000075720000-0x000000007576C000-memory.dmp

      Filesize

      304KB

    • memory/5004-74-0x0000000007410000-0x0000000007A8A000-memory.dmp

      Filesize

      6.5MB

    • memory/5004-75-0x0000000006DD0000-0x0000000006DEA000-memory.dmp

      Filesize

      104KB

    • memory/5004-76-0x0000000006E40000-0x0000000006E4A000-memory.dmp

      Filesize

      40KB

    • memory/5004-20-0x0000000004AE0000-0x0000000004B02000-memory.dmp

      Filesize

      136KB

    • memory/5004-78-0x0000000006FD0000-0x0000000006FE1000-memory.dmp

      Filesize

      68KB

    • memory/5004-21-0x0000000004C80000-0x0000000004CE6000-memory.dmp

      Filesize

      408KB

    • memory/5004-25-0x0000000005480000-0x00000000057D4000-memory.dmp

      Filesize

      3.3MB

    • memory/5004-46-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/5004-23-0x0000000005350000-0x00000000053B6000-memory.dmp

      Filesize

      408KB

    • memory/5004-85-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/5004-18-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/5004-16-0x0000000074EA0000-0x0000000075650000-memory.dmp

      Filesize

      7.7MB

    • memory/5004-17-0x0000000004D20000-0x0000000005348000-memory.dmp

      Filesize

      6.2MB