Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-08-2024 04:21

General

  • Target

    7f2761a751bb3205b4b82ac40c62475b_JaffaCakes118.exe

  • Size

    1013KB

  • MD5

    7f2761a751bb3205b4b82ac40c62475b

  • SHA1

    bf7b8b6a7dafcd506885baf5346295fa742115ef

  • SHA256

    52b8d8b83d4fb0a23c947c9f76b2a205b6e9d4338a74eb07ecf29b2fa6289161

  • SHA512

    a94e29620be16f6e3bbc6bea9cbdbb53568c8a8470c3bfc40b823cb299fc193300ccad046d6b38a45a665e240843f811d77adb2f2513bbe617aa4bd214a33789

  • SSDEEP

    12288:y1Eu4AZ+EOJTSNT8JpclOVgvcWS2LgHtJpXMKI1jdT5yRVhJUzIwX5+9NB8GYbn3:k0GMG15eisLl74ZYS+/VRZ

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

hmmm1.no-ip.biz:1452

Mutex

DC_MUTEX-RF11TVS

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    s8N4R8Mo0z2b

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

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
  • Adds Run key to start application 2 TTPs 1 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.

  • Modifies registry class 1 IoCs
  • 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\7f2761a751bb3205b4b82ac40c62475b_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\7f2761a751bb3205b4b82ac40c62475b_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4568
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      C:\Users\Admin\AppData\Local\Temp\svchost.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
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5020
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4012
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:320
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:684
        • 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:2644
      • 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:2912

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    1.1MB

    MD5

    d881de17aa8f2e2c08cbb7b265f928f9

    SHA1

    08936aebc87decf0af6e8eada191062b5e65ac2a

    SHA256

    b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

    SHA512

    5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

  • memory/4568-0-0x0000000074942000-0x0000000074943000-memory.dmp

    Filesize

    4KB

  • memory/4568-1-0x0000000074940000-0x0000000074EF1000-memory.dmp

    Filesize

    5.7MB

  • memory/4568-2-0x0000000074940000-0x0000000074EF1000-memory.dmp

    Filesize

    5.7MB

  • memory/4568-16-0x0000000074940000-0x0000000074EF1000-memory.dmp

    Filesize

    5.7MB

  • memory/5020-8-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/5020-5-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/5020-9-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/5020-11-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/5020-13-0x00000000025C0000-0x00000000025C1000-memory.dmp

    Filesize

    4KB

  • memory/5020-74-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB