General

  • Target

    brhu.zip

  • Size

    5.2MB

  • Sample

    241203-yv6e8axkfk

  • MD5

    b4beead5a110d9ce24b1c26fa41e3e99

  • SHA1

    b2e873487c4d90447d923b3b6b89995ffb456b8c

  • SHA256

    a1356c9f60766482ea7590a16225a6a13497387345741da43d7cd5f33ab47576

  • SHA512

    8f701a85322980c28f0742ff6b4ba549eef93c0462cfc27d56517d1d210c4016ebbe5ef064fa5346c65119dadb2916de04e5be4f689f4c2f68a949f2e9bd617b

  • SSDEEP

    98304:taptf7h03fmRwldsRLvP43G9B7JgnZX0XRBx9dLCHi3mKJ2cWTju:tGf7jko4olEZX0L7dL2i37ncu

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

darkgvr.duckdns.org:1604

picaroon.duckdns.org:1604

Mutex

DC_MUTEX-1F8AXR1

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    MuPduYiF2XAq

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

Zula Hack

C2

denkmisin.duckdns.org:5552

Mutex

Windows Service

Attributes
  • reg_key

    Windows Service

  • splitter

    |Hassan|

Extracted

Family

metasploit

Version

encoder/shikata_ga_nai

Extracted

Family

metasploit

Version

windows/reverse_tcp

C2

3.17.202.129:17362

Extracted

Family

xenorat

C2

127.0.0.1

Mutex

Xeno_rat_nd8912d

Attributes
  • delay

    5000

  • install_path

    nothingset

  • port

    4444

  • startup_name

    nothingset

Targets

    • Target

      brhu.zip

    • Size

      5.2MB

    • MD5

      b4beead5a110d9ce24b1c26fa41e3e99

    • SHA1

      b2e873487c4d90447d923b3b6b89995ffb456b8c

    • SHA256

      a1356c9f60766482ea7590a16225a6a13497387345741da43d7cd5f33ab47576

    • SHA512

      8f701a85322980c28f0742ff6b4ba549eef93c0462cfc27d56517d1d210c4016ebbe5ef064fa5346c65119dadb2916de04e5be4f689f4c2f68a949f2e9bd617b

    • SSDEEP

      98304:taptf7h03fmRwldsRLvP43G9B7JgnZX0XRBx9dLCHi3mKJ2cWTju:tGf7jko4olEZX0L7dL2i37ncu

    • Darkcomet

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

    • Darkcomet family

    • Detect XenoRat Payload

    • MetaSploit

      Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

    • Metasploit family

    • Modifies WinLogon for persistence

    • Njrat family

    • XenorRat

      XenorRat is a remote access trojan written in C#.

    • Xenorat family

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops desktop.ini file(s)

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks