Analysis

  • max time kernel
    149s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/07/2024, 01:04

General

  • Target

    65892469fe4238129a806c3c05511d6f_JaffaCakes118.exe

  • Size

    251KB

  • MD5

    65892469fe4238129a806c3c05511d6f

  • SHA1

    13991410e3612ce4b9a9e2fc85064230f8bf7ca9

  • SHA256

    a99b5985cad28b83cec7b13ebb812f74829cb2a1b9b97e37c2162a0722474cd8

  • SHA512

    7065bd7aae0bc8e3edeb7eadfd89511950e998d812e4fa75760b41888146d7a1de8d79bae99ce851246d8f3118aca18dafc2b24530e928fa5fec2560deb0c6f5

  • SSDEEP

    6144:LRJQPYYabU6vUpFC0oc3kTyC8oh4rtTYRpVk5T:LYYP4C9IkTypoh4hT

Malware Config

Extracted

Family

darkcomet

Botnet

fff

C2

127.0.0.1:1604

Mutex

DCMIN_MUTEX-TPGN20T

Attributes
  • InstallPath

    DCSCMIN\IMDCSC.exe

  • gencode

    HJ2HZr91NJ0E

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    DarkComet RAT

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 14 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\65892469fe4238129a806c3c05511d6f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\65892469fe4238129a806c3c05511d6f_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1068
    • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
      "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1844

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

    Filesize

    251KB

    MD5

    65892469fe4238129a806c3c05511d6f

    SHA1

    13991410e3612ce4b9a9e2fc85064230f8bf7ca9

    SHA256

    a99b5985cad28b83cec7b13ebb812f74829cb2a1b9b97e37c2162a0722474cd8

    SHA512

    7065bd7aae0bc8e3edeb7eadfd89511950e998d812e4fa75760b41888146d7a1de8d79bae99ce851246d8f3118aca18dafc2b24530e928fa5fec2560deb0c6f5

  • memory/1068-0-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1068-1-0x0000000000C60000-0x0000000000C61000-memory.dmp

    Filesize

    4KB

  • memory/1068-14-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-19-0x0000000000880000-0x0000000000881000-memory.dmp

    Filesize

    4KB

  • memory/1844-16-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-17-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-18-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-15-0x0000000000880000-0x0000000000881000-memory.dmp

    Filesize

    4KB

  • memory/1844-20-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-22-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-23-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-24-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-26-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-28-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-30-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1844-31-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB