Overview

overview

10

Static

static

3

JaffaCakes...0d.exe

windows10-2004-x64

10

JaffaCakes...0d.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    142s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250410-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/04/2025, 08:06

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General

  • Target

    JaffaCakes118_bd3dc48ff967e155e51531603eb3530d.exe

  • Size

    360KB

  • MD5

    bd3dc48ff967e155e51531603eb3530d

  • SHA1

    295fe2d34a24b6b5a96ff68c8409a9d0fe1fc5ab

  • SHA256

    756f65ec054a4af056c4d7546f9d13119238749a31997481c1a2942fff472e13

  • SHA512

    6a12e9a5ad3514fc4f6c65d348a5884ef6d923271ce91bf6f2a763d93597707f40c4ee93ca9dd08250df38d497292887ddc783050a108750301457c35fdb9850

  • SSDEEP

    6144:KgWXeqZnIJAvpFpN0VPt9pGB/ZHcB+r1AwQDM7sYyzP+mOrxB:Geqe4pFYVP+xHcB+r1A87sPtwB

Score
10/10
darkcometguest16discoverypersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

arwen.zapto.org:1604

Mutex

DC_MUTEX-F54S21D

Attributes
  • InstallPath

    Windupdt\svcmt.exe

  • gencode

    qCFVQE1CZt9t

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    svcmt

rc4.plain

Signatures

  • Darkcomet

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

    trojanratdarkcomet
  • Darkcomet family
    darkcomet
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Checks BIOS information in registry 2 TTPs 1 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops file in System32 directory 2 IoCs
  • UPX packed file 3 IoCs

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

    upx
  • Enumerates physical storage devices 1 TTPs

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

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

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

    discovery
  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bd3dc48ff967e155e51531603eb3530d.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bd3dc48ff967e155e51531603eb3530d.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5332
    • C:\Users\Admin\AppData\Local\Temp\SERVER.exe
      "C:\Users\Admin\AppData\Local\Temp\SERVER.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      PID:5884
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:2168
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Windows\system32\Windupdt\svcmt.exe
    1⤵
      PID:1084

    Network

    MITRE ATT&CK Enterprise v16

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\SERVER.exe
      Filesize

      233KB

      MD5

      ee3bb73912f6f5758b4c568890451550

      SHA1

      08039243647727daaf66ca7390dd74dafe38cd26

      SHA256

      a153f3aced4345eed0aa1c20b335c6330df979837b909d9d757ba939790a7fa1

      SHA512

      a755bf16eb8aa14ae1a7c015aacf8d0fde56e71da4af2ec5d3b7d5c9fce55a6a4298ec5655e8a24677bac7c811c355212f0b34e2d47699a63014ee43d85fdac2

      Download Submit

    • memory/5332-3-0x000000001BDA0000-0x000000001C26E000-memory.dmp

      Filesize

      4.8MB

      Download

    • memory/5332-2-0x00007FF986DB0000-0x00007FF987751000-memory.dmp

      Filesize

      9.6MB

      Download

    • memory/5332-0-0x00007FF987065000-0x00007FF987066000-memory.dmp

      Filesize

      4KB

      Download

    • memory/5332-4-0x000000001C310000-0x000000001C3AC000-memory.dmp

      Filesize

      624KB

      Download

    • memory/5332-5-0x00007FF986DB0000-0x00007FF987751000-memory.dmp

      Filesize

      9.6MB

      Download

    • memory/5332-6-0x0000000001170000-0x0000000001178000-memory.dmp

      Filesize

      32KB

      Download

    • memory/5332-7-0x000000001C440000-0x000000001C48C000-memory.dmp

      Filesize

      304KB

      Download

    • memory/5332-8-0x00007FF986DB0000-0x00007FF987751000-memory.dmp

      Filesize

      9.6MB

      Download

    • memory/5332-1-0x000000001B820000-0x000000001B8C6000-memory.dmp

      Filesize

      664KB

      Download

    • memory/5332-20-0x00007FF986DB0000-0x00007FF987751000-memory.dmp

      Filesize

      9.6MB

      Download

    • memory/5884-17-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

      Download

    • memory/5884-23-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

      Download