Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-04-2024 07:30

General

  • Target

    f093f75b0c4fb499e79407a6f1e0677b_JaffaCakes118.exe

  • Size

    1.1MB

  • MD5

    f093f75b0c4fb499e79407a6f1e0677b

  • SHA1

    4c49a59b3723aef75f7dbb1270151112cc844c7e

  • SHA256

    7c313a9892feb0bd975f6d8c1fe9ea0447adbf738c88353236079693046bb4d8

  • SHA512

    5034c1fab191f226aaa82f3f44b31d34f078c7aee2027f70a02cf6acb6db239311df60deacf19c1b798a658e4fdf775b4bbd67b0ba813357dc49f8247b7a1a68

  • SSDEEP

    12288:A5fQl3fYNmFm4ODd6spRXLh2pBHMP4KSt9043Q5yzYtS5Ur8bmFzujLRI4LZJZjE:DvYRRLpNAttTXgVan

Malware Config

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 6 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f093f75b0c4fb499e79407a6f1e0677b_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f093f75b0c4fb499e79407a6f1e0677b_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3016
    • 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
      • Checks BIOS information in registry
      • Adds Run key to start application
      • Drops file in Windows directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3216
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\SysWOW64\explorer.exe"
        3⤵
          PID:2720
        • C:\Windows\WinDir\Svchost.exe
          "C:\Windows\WinDir\Svchost.exe"
          3⤵
          • Executes dropped EXE
          PID:5096
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4080 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:1640

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Windows\WinDir\Svchost.exe

        Filesize

        1.1MB

        MD5

        d881de17aa8f2e2c08cbb7b265f928f9

        SHA1

        08936aebc87decf0af6e8eada191062b5e65ac2a

        SHA256

        b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

        SHA512

        5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

      • memory/3016-0-0x0000000074FF0000-0x00000000755A1000-memory.dmp

        Filesize

        5.7MB

      • memory/3016-1-0x0000000074FF0000-0x00000000755A1000-memory.dmp

        Filesize

        5.7MB

      • memory/3016-2-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/3016-8-0x0000000074FF0000-0x00000000755A1000-memory.dmp

        Filesize

        5.7MB

      • memory/3216-4-0x0000000000400000-0x00000000004E6000-memory.dmp

        Filesize

        920KB

      • memory/3216-7-0x0000000000400000-0x00000000004E6000-memory.dmp

        Filesize

        920KB

      • memory/3216-10-0x0000000000400000-0x00000000004E6000-memory.dmp

        Filesize

        920KB

      • memory/3216-9-0x0000000000400000-0x00000000004E6000-memory.dmp

        Filesize

        920KB

      • memory/3216-11-0x00000000027C0000-0x00000000027C1000-memory.dmp

        Filesize

        4KB

      • memory/3216-12-0x0000000000400000-0x00000000004E6000-memory.dmp

        Filesize

        920KB

      • memory/3216-72-0x0000000000400000-0x00000000004E6000-memory.dmp

        Filesize

        920KB