Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/01/2025, 23:40

General

  • Target

    JaffaCakes118_11fb758dd3cdc09650445e5527b88e66.exe

  • Size

    1.1MB

  • MD5

    11fb758dd3cdc09650445e5527b88e66

  • SHA1

    35a122d148139c21185496adf1abb0c63ceba357

  • SHA256

    41a682da16b22581581ef2353fe9e900be9162609dc89c956addd256b4f9d546

  • SHA512

    cd7f9e76dd23e5f76a6bb45e9d0d6da182a62018697817f892e06a0f0b7d61e5c150947273bdf07f8e71e3e4e3c12343bc3ae5ce48e3be3dd0c531f5aa9fcf4d

  • SSDEEP

    24576:RVmqz0QRWoJEfg0oChGdJQbjPbNW5tYeP+GF/9YvWmztzWFq:RBAQRV2o3MPY5Aw9YvjzAq

Malware Config

Extracted

Family

darkcomet

Botnet

Trojan_

C2

rubino.zapto.org:1604

Mutex

DC_MUTEX-9E0FYS9

Attributes
  • InstallPath

    Java.exe

  • gencode

    KHoKmB1jKaxU

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Java

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 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 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_11fb758dd3cdc09650445e5527b88e66.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_11fb758dd3cdc09650445e5527b88e66.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4204
    • C:\Users\Admin\AppData\Local\Temp\IDOSER V4.EXE
      "C:\Users\Admin\AppData\Local\Temp\IDOSER V4.EXE"
      2⤵
      • Executes dropped EXE
      PID:3544
    • C:\Users\Admin\AppData\Local\Temp\TROJAN.EXE
      "C:\Users\Admin\AppData\Local\Temp\TROJAN.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:4744
      • C:\Users\Admin\AppData\Roaming\Java.exe
        "C:\Users\Admin\AppData\Roaming\Java.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Windows security modification
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • System policy modification
        PID:4640

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\IDOSER V4.EXE

    Filesize

    157KB

    MD5

    cf7dc664d5f00183b920f9001b3cf6a4

    SHA1

    248facb4586b68768954c2b6e6947c651b17ea54

    SHA256

    3cc66a22f26f6517f52f6efe17f510510e89312a4ff893c71e689abfda26eb4a

    SHA512

    b47387fa31ddde23154ecb0ad25589cd468b5701320aa3b8f473315eea310c1d4fa351a9dbb7cb658f3707cf092cbb1a95137f6ee902943ddfb32856e9741027

  • C:\Users\Admin\AppData\Local\Temp\TROJAN.EXE

    Filesize

    846KB

    MD5

    c1f94d8462f922748cdbdca166744f3d

    SHA1

    fa051be7431a989577cea812e93f2a501435c941

    SHA256

    4a238fb5aff8e80948017e4e3f4268c2bf6155007192c65c009adb52450ad494

    SHA512

    6472a4d983fb779019deb6aa5f444128eda4e17e5600f2a8a1cffedb6a71cfd7cccb61c0f532d1ecb536f8fa2b836633f21e54e214ad0b84a56000acd94cb7a9

  • memory/3544-29-0x000000001BF50000-0x000000001BFEC000-memory.dmp

    Filesize

    624KB

  • memory/3544-30-0x0000000000CF0000-0x0000000000CF8000-memory.dmp

    Filesize

    32KB

  • memory/3544-22-0x00007FFD6D7D5000-0x00007FFD6D7D6000-memory.dmp

    Filesize

    4KB

  • memory/3544-25-0x00007FFD6D7D5000-0x00007FFD6D7D6000-memory.dmp

    Filesize

    4KB

  • memory/3544-26-0x000000001B3F0000-0x000000001B496000-memory.dmp

    Filesize

    664KB

  • memory/3544-28-0x000000001B970000-0x000000001BE3E000-memory.dmp

    Filesize

    4.8MB

  • memory/3544-38-0x00007FFD6D520000-0x00007FFD6DEC1000-memory.dmp

    Filesize

    9.6MB

  • memory/3544-23-0x00007FFD6D520000-0x00007FFD6DEC1000-memory.dmp

    Filesize

    9.6MB

  • memory/3544-31-0x000000001C0B0000-0x000000001C0FC000-memory.dmp

    Filesize

    304KB

  • memory/3544-32-0x00007FFD6D520000-0x00007FFD6DEC1000-memory.dmp

    Filesize

    9.6MB

  • memory/3544-33-0x00007FFD6D520000-0x00007FFD6DEC1000-memory.dmp

    Filesize

    9.6MB

  • memory/3544-34-0x00007FFD6D520000-0x00007FFD6DEC1000-memory.dmp

    Filesize

    9.6MB

  • memory/3544-35-0x00007FFD6D7D5000-0x00007FFD6D7D6000-memory.dmp

    Filesize

    4KB

  • memory/3544-37-0x00007FFD6D520000-0x00007FFD6DEC1000-memory.dmp

    Filesize

    9.6MB

  • memory/4640-56-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-55-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-63-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-51-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-52-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-53-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-54-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-62-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-61-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-57-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-58-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-59-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4640-60-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4744-24-0x0000000002430000-0x0000000002431000-memory.dmp

    Filesize

    4KB

  • memory/4744-36-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB

  • memory/4744-50-0x0000000000400000-0x00000000004E1000-memory.dmp

    Filesize

    900KB