Analysis

  • max time kernel
    101s
  • max time network
    104s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250410-en
  • resource tags

    arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    18/04/2025, 22:01

General

  • Target

    JaffaCakes118_bff04a6789b9d9818531e5425439857a.exe

  • Size

    900KB

  • MD5

    bff04a6789b9d9818531e5425439857a

  • SHA1

    9dc5aa71a2cc30d19499abffa8b8bb476490341c

  • SHA256

    d1d2310532bcab2d6e6e3df9c2c8fe80e6770bb9023d3ec2faa2d0cca44345d1

  • SHA512

    8877a96047da6505a8a4615259bca48fa0e68ff48d62cd5fe2f7df290f0ac53b4ee056feaaa2c57043ef99800826df747b549efcb2004f0b2b7391c85e222c02

  • SSDEEP

    12288:hX5XfC/zm7TYoBSZPEJMtg7MjX/s5hkcnDVg2cSx/cP+sl5ZAwxaNa3PnGVm54:hk/aBSBEJMG7JwgD2NiG5n3vO

Malware Config

Extracted

Family

darkcomet

Botnet

hackftw

C2

hackingftw.no-ip.org:1324

Mutex

DC_MUTEX-A4S0HZ5

Attributes
  • InstallPath

    system32\winlogon.exe

  • gencode

    MrTTiB2tmghE

  • install

    true

  • offline_keylogger

    true

  • password

    Marmir1212!

  • persistence

    false

  • reg_key

    winlogon

rc4.plain

Signatures

  • Darkcomet

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

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

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

  • Executes dropped EXE 7 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

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

  • Checks processor information in registry 2 TTPs 8 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bff04a6789b9d9818531e5425439857a.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bff04a6789b9d9818531e5425439857a.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5332
    • C:\Users\Admin\AppData\Local\Temp\winhost32.exe
      C:\Users\Admin\AppData\Local\Temp\\winhost32.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5096
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\SysWOW64\explorer.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4572
      • C:\system32\winlogon.exe
        "C:\system32\winlogon.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2284
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\שיר על זיו.txt
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2404
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\rundll32.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5812
    • C:\Users\Admin\AppData\Local\Temp\rundll32.exe
      C:\Users\Admin\AppData\Local\Temp\rundll32.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5176
      • C:\Users\Admin\AppData\Local\Temp\winhost32.exe
        C:\Users\Admin\AppData\Local\Temp\\winhost32.exe
        3⤵
        • Modifies WinLogon for persistence
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Enumerates system info in registry
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1492
        • C:\Windows\SysWOW64\explorer.exe
          "C:\Windows\SysWOW64\explorer.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5056
        • C:\system32\winlogon.exe
          "C:\system32\winlogon.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:3564
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\system32\winlogon.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1796
    • C:\system32\winlogon.exe
      C:\system32\winlogon.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5060
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\system32\winlogon.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3816
    • C:\system32\winlogon.exe
      C:\system32\winlogon.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4924

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\rundll32.exe

    Filesize

    900KB

    MD5

    bff04a6789b9d9818531e5425439857a

    SHA1

    9dc5aa71a2cc30d19499abffa8b8bb476490341c

    SHA256

    d1d2310532bcab2d6e6e3df9c2c8fe80e6770bb9023d3ec2faa2d0cca44345d1

    SHA512

    8877a96047da6505a8a4615259bca48fa0e68ff48d62cd5fe2f7df290f0ac53b4ee056feaaa2c57043ef99800826df747b549efcb2004f0b2b7391c85e222c02

  • C:\Users\Admin\AppData\Local\Temp\winhost32.exe

    Filesize

    5KB

    MD5

    d2ed8fa3208e702b7d61728af768eed1

    SHA1

    54094aa272cb866a46c2ca5b56f4a094e0f48ffb

    SHA256

    9236208e312b2f47a0ef40e59fc0f364fc8e401717e1e46555c26bec8ab3de1f

    SHA512

    42442dc0b98f2abaea0c6516602d80df8a2a680278ecdc2b96fe5ce44685f7442347fd4ad13d9d99e0330cf0be7c0e9bbf22bd78c0173066221e430203c76313

  • C:\Users\Admin\AppData\Local\Temp\שיר על זיו.txt

    Filesize

    349B

    MD5

    8b621829181a4252027ca5fd952e5269

    SHA1

    0b8c6ba5662351ac6fd998733d16957e042a6320

    SHA256

    76fbeee294003b8acf9c6b8b3fde6d747bd86bc6e43a524ae7579eb9a66be6ec

    SHA512

    e206e9dea9b4e1315eaf9121ba4dd227ab17648b94c66c43c005e59ba60d27e6ec3408a73c994fa8757fb8db26604798d406baa7eb2948db6692da7e6153fe91

  • memory/1492-43-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/1492-31-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/4572-23-0x0000000000400000-0x0000000000405000-memory.dmp

    Filesize

    20KB

  • memory/4572-22-0x0000000000400000-0x0000000000405000-memory.dmp

    Filesize

    20KB

  • memory/5096-19-0x00000000024B0000-0x00000000024B1000-memory.dmp

    Filesize

    4KB

  • memory/5096-8-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/5096-13-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/5096-44-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/5096-9-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/5096-15-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/5096-5-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/5176-25-0x00000000746A0000-0x0000000074C51000-memory.dmp

    Filesize

    5.7MB

  • memory/5176-33-0x00000000746A0000-0x0000000074C51000-memory.dmp

    Filesize

    5.7MB

  • memory/5176-24-0x00000000746A0000-0x0000000074C51000-memory.dmp

    Filesize

    5.7MB

  • memory/5176-21-0x00000000746A1000-0x00000000746A2000-memory.dmp

    Filesize

    4KB

  • memory/5332-0-0x00000000746A1000-0x00000000746A2000-memory.dmp

    Filesize

    4KB

  • memory/5332-2-0x00000000746A0000-0x0000000074C51000-memory.dmp

    Filesize

    5.7MB

  • memory/5332-37-0x00000000746A0000-0x0000000074C51000-memory.dmp

    Filesize

    5.7MB

  • memory/5332-1-0x00000000746A0000-0x0000000074C51000-memory.dmp

    Filesize

    5.7MB