Analysis

  • max time kernel
    96s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/10/2024, 22:33

General

  • Target

    3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe

  • Size

    993KB

  • MD5

    3216b81f9731256d3fe49c62121990a0

  • SHA1

    31bf55a24ade293b3ea91416a9cfe0d2caa9b1c3

  • SHA256

    7467389d865089caa1830efa45ba37ff408f723dd0debf0e94d3fe4376aa1408

  • SHA512

    7a6ba796d6eb647669596c1402c6f54a265383e30cdb45a896241bb2513881e374ddc065230aaef8c0b572954f50548b52ac63afeda80f6efd1addb6e4529286

  • SSDEEP

    24576:F1CjRNrxmiRwxeFfZMRWn1fObCb4yZQgr:F2NNmvEFOotr6k

Malware Config

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3216b81f9731256d3fe49c62121990a0_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1588
    • C:\Users\Admin\AppData\Local\Temp\vbc.exe
      C:\Users\Admin\AppData\Local\Temp\vbc.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2488
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1952
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:4144
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:216
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2684
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2124

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat

    Filesize

    50B

    MD5

    b774ae3fb1da087e1f83b4f7b2060e5a

    SHA1

    97eb9be49ac3af9c851c9e1e84e32bfd53e325a8

    SHA256

    adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b

    SHA512

    f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701

  • C:\Users\Admin\AppData\Local\Temp\vbc.exe

    Filesize

    1.1MB

    MD5

    d881de17aa8f2e2c08cbb7b265f928f9

    SHA1

    08936aebc87decf0af6e8eada191062b5e65ac2a

    SHA256

    b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

    SHA512

    5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

  • memory/1588-0-0x00000000747F2000-0x00000000747F3000-memory.dmp

    Filesize

    4KB

  • memory/1588-1-0x00000000747F0000-0x0000000074DA1000-memory.dmp

    Filesize

    5.7MB

  • memory/1588-2-0x00000000747F0000-0x0000000074DA1000-memory.dmp

    Filesize

    5.7MB

  • memory/1588-19-0x00000000747F0000-0x0000000074DA1000-memory.dmp

    Filesize

    5.7MB

  • memory/2488-7-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/2488-10-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/2488-14-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/2488-13-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/2488-15-0x00000000022D0000-0x00000000022D1000-memory.dmp

    Filesize

    4KB

  • memory/2488-34-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB