Analysis

  • max time kernel
    93s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-04-2024 00:33

General

  • Target

    f4aa4319e9665a8e361b1698ed0bd7d5_JaffaCakes118.exe

  • Size

    848KB

  • MD5

    f4aa4319e9665a8e361b1698ed0bd7d5

  • SHA1

    9f0ba090549177dca85ec622459464b37c5505e1

  • SHA256

    5663bb62c67c6453f5dc4f0e395faa9219f6397efcf86c0f49d48114825c3488

  • SHA512

    be6421f468b4ecdf8cf3afcb123daf7c80186b058e3526ba34995afab1b9af9fbbc4fef52684e0efc1d88e67fbe7348d9e9f89d28c55d485f0fe5dce37aaa3f6

  • SSDEEP

    12288:va2jkl3B7hfDZcQ+vLVeJL1eqdIgP5tG4N5/aasLFfvFRyCQGib8tQQ8lOJ3ebVn:vaEkVZyVk8Y5N5iZvFRAAalOJ3Sjx5

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f4aa4319e9665a8e361b1698ed0bd7d5_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f4aa4319e9665a8e361b1698ed0bd7d5_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks BIOS information in registry
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Adds Run key to start application
      PID:5092
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\SysWOW64\explorer.exe"
      2⤵
        PID:1268

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Winlogon Helper DLL

    1
    T1547.004

    Privilege Escalation

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Winlogon Helper DLL

    1
    T1547.004

    Defense Evasion

    Modify Registry

    2
    T1112

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    3
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\PCGWIN32.LI5
      Filesize

      2KB

      MD5

      d8b37842c7ea650e35ab34a6f0581e6d

      SHA1

      84324031bb44aa56d19b78892b38371fe830d11e

      SHA256

      0d15d81daa2b1295954e00eb51388d119f2248238e940b24973508bfb083435d

      SHA512

      793d21a65685ca1a92ddc6f79ac48a74e9651a9579892405913b9a628d0425bb6ec4c4857587f93c8f1080481db9480fab7b71eb4d0ef571839d9d4022976cb5

    • C:\Windupdt\winupdate.exe
      Filesize

      848KB

      MD5

      f4aa4319e9665a8e361b1698ed0bd7d5

      SHA1

      9f0ba090549177dca85ec622459464b37c5505e1

      SHA256

      5663bb62c67c6453f5dc4f0e395faa9219f6397efcf86c0f49d48114825c3488

      SHA512

      be6421f468b4ecdf8cf3afcb123daf7c80186b058e3526ba34995afab1b9af9fbbc4fef52684e0efc1d88e67fbe7348d9e9f89d28c55d485f0fe5dce37aaa3f6

    • memory/1268-19-0x0000000013140000-0x0000000013226000-memory.dmp
      Filesize

      920KB

    • memory/1268-22-0x0000000013140000-0x0000000013226000-memory.dmp
      Filesize

      920KB

    • memory/1268-20-0x0000000013140000-0x0000000013226000-memory.dmp
      Filesize

      920KB

    • memory/1268-23-0x0000000013140000-0x0000000013226000-memory.dmp
      Filesize

      920KB

    • memory/1268-24-0x0000000013140000-0x0000000013226000-memory.dmp
      Filesize

      920KB

    • memory/1444-0-0x0000000013140000-0x0000000013226000-memory.dmp
      Filesize

      920KB

    • memory/1444-12-0x0000000002640000-0x0000000002641000-memory.dmp
      Filesize

      4KB

    • memory/1444-21-0x0000000013140000-0x0000000013226000-memory.dmp
      Filesize

      920KB

    • memory/5092-14-0x00000000007A0000-0x00000000007A1000-memory.dmp
      Filesize

      4KB