Analysis

  • max time kernel
    150s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    09-08-2024 21:16

General

  • Target

    8393b965a4159ab6400d46899c943af1_JaffaCakes118.exe

  • Size

    234KB

  • MD5

    8393b965a4159ab6400d46899c943af1

  • SHA1

    13f2b5f18cbb2ea6165bcca033d3d17880965a71

  • SHA256

    a243b4d437e5381ce22852e3bc6f6621dfaf8a618526d37d4e763a43c5634c07

  • SHA512

    8f5146b3ff5e35e8b9376a568da405bb74f89da8d36d7faba79a32281b25f57e6fa6b93a3b22ab4bc36041025e902e45ffcca18865e74a732d5ff30b9040483e

  • SSDEEP

    6144:9hqN2gp8/DlfS7kuF8EZZY0W+DBOeq0S98JS9ToS:9h8eDlK7iEFVhq0SeU9ToS

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-F54S21D

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    VzpgEE93M5fr

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 6 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8393b965a4159ab6400d46899c943af1_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8393b965a4159ab6400d46899c943af1_JaffaCakes118.exe"
    1⤵
    • 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:2172
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\Documents\MSDCSC\msdcsc.exe

    Filesize

    234KB

    MD5

    8393b965a4159ab6400d46899c943af1

    SHA1

    13f2b5f18cbb2ea6165bcca033d3d17880965a71

    SHA256

    a243b4d437e5381ce22852e3bc6f6621dfaf8a618526d37d4e763a43c5634c07

    SHA512

    8f5146b3ff5e35e8b9376a568da405bb74f89da8d36d7faba79a32281b25f57e6fa6b93a3b22ab4bc36041025e902e45ffcca18865e74a732d5ff30b9040483e

  • memory/2172-0-0x0000000000400000-0x00000000004BB000-memory.dmp

    Filesize

    748KB

  • memory/2172-1-0x0000000000260000-0x0000000000261000-memory.dmp

    Filesize

    4KB

  • memory/2172-12-0x0000000000400000-0x00000000004BB000-memory.dmp

    Filesize

    748KB

  • memory/2172-17-0x00000000035E0000-0x000000000369B000-memory.dmp

    Filesize

    748KB

  • memory/3068-14-0x0000000000400000-0x00000000004BB000-memory.dmp

    Filesize

    748KB

  • memory/3068-15-0x0000000000260000-0x0000000000261000-memory.dmp

    Filesize

    4KB

  • memory/3068-16-0x0000000000400000-0x00000000004BB000-memory.dmp

    Filesize

    748KB

  • memory/3068-19-0x0000000000260000-0x0000000000261000-memory.dmp

    Filesize

    4KB

  • memory/3068-20-0x0000000000400000-0x00000000004BB000-memory.dmp

    Filesize

    748KB