Analysis

  • max time kernel
    63s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    26/02/2025, 12:11

General

  • Target

    JaffaCakes118_25d94481f4967537d4b75902827e1948.exe

  • Size

    1.1MB

  • MD5

    25d94481f4967537d4b75902827e1948

  • SHA1

    71f72e4679f9918c506b6479870ebf5701d418dc

  • SHA256

    69ec29e540120ba091110e2ff51bddd3b67c5de8eb466959d2bb24316f5e813c

  • SHA512

    608af79380dc6bfb0c42ab07f99346ca0fc1a2ff338382b9ab0de9b359e0165720f08b0e81538eacd5a0a97fef968994253f1f3fdc88ad20cd63fcb11a0cf2ca

  • SSDEEP

    12288:JMmG1c2JW3zHBkdTYHvCicPmvpItUBLZsJ7KLctBhhoeThzvF1pVQ2KO43s9ub45:JCZV+jBItRTVF1dNqhH7jmbyU+ergU

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-46MKRG6

Attributes
  • InstallPath

    Windupdt\winupdate.exe

  • gencode

    SsSbby=wZDXq

  • install

    true

  • offline_keylogger

    true

  • password

    dreamh4ck

  • persistence

    true

  • reg_key

    winupdater

rc4.plain

Extracted

Family

darkcomet

Attributes
  • gencode

  • install

    false

  • offline_keylogger

    false

  • persistence

    false

rc4.plain

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25d94481f4967537d4b75902827e1948.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_25d94481f4967537d4b75902827e1948.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2892
      • C:\Windupdt\winupdate.exe
        "C:\Windupdt\winupdate.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2824
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:2740
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 5
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:3000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Windupdt\winupdate.exe

    Filesize

    1.1MB

    MD5

    34aa912defa18c2c129f1e09d75c1d7e

    SHA1

    9c3046324657505a30ecd9b1fdb46c05bde7d470

    SHA256

    6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

    SHA512

    d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

  • memory/1096-0-0x0000000073EF1000-0x0000000073EF2000-memory.dmp

    Filesize

    4KB

  • memory/1096-1-0x0000000073EF0000-0x000000007449B000-memory.dmp

    Filesize

    5.7MB

  • memory/1096-2-0x0000000073EF0000-0x000000007449B000-memory.dmp

    Filesize

    5.7MB

  • memory/1096-19-0x0000000073EF0000-0x000000007449B000-memory.dmp

    Filesize

    5.7MB

  • memory/2892-9-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-7-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-12-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-11-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-10-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-15-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-8-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2892-5-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-17-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-18-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-20-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-16-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-3-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2892-31-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB