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Analysis

  • max time kernel
    119s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 21 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⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2408
    • 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:2704
    • 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:2860
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lFUADIVKfDRpV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCFFC.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2872
    • 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:3004

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    4d589cbc91f4435cbfff62c895eb8430

    SHA1

    74b1c9f92377955e3d9690abcbad4463bbbe6e7a

    SHA256

    2a17ec03bfb86cf61f7ab3288cd35329d01122c92cbf76746f7a49dca8956f16

    SHA512

    2558c56dccce8c7c806dc8bc46b7b7757830fa7a862c22e5dc2353d8ce915daf74bffe24bdc1279a67dee1d29ba82433daac84858f513aa56177d68780c9a895

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    61bd0492ad000e06982ad77c0ba1c719

    SHA1

    f8286216470aa0c820a3039f9df68e3dfc3a2358

    SHA256

    99f84fc5f23e9ebccbfe40a9fd324cb9efdbd54fcec086f4eff43fb8b9e91848

    SHA512

    9ced838af335191f5d8a641f67f229eac7750225e96bc38321a1204ce0b7595676921a91d313929068e97f1d4637b12b1da3ec63f675e735afdfbbaf4e4856db

  • memory/2408-4-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

    Filesize

    4KB

  • memory/2408-31-0x0000000074C10000-0x00000000752FE000-memory.dmp

    Filesize

    6.9MB

  • memory/2408-0-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

    Filesize

    4KB

  • memory/2408-5-0x0000000074C10000-0x00000000752FE000-memory.dmp

    Filesize

    6.9MB

  • memory/2408-6-0x00000000048F0000-0x000000000497E000-memory.dmp

    Filesize

    568KB

  • memory/2408-2-0x0000000074C10000-0x00000000752FE000-memory.dmp

    Filesize

    6.9MB

  • memory/2408-1-0x0000000000A20000-0x0000000000B06000-memory.dmp

    Filesize

    920KB

  • memory/2408-3-0x00000000003C0000-0x00000000003DC000-memory.dmp

    Filesize

    112KB

  • memory/3004-19-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/3004-29-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/3004-28-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/3004-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3004-25-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/3004-23-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/3004-21-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/3004-30-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB