General

Malware Config

Extracted

Family
  • modiloader

C2
  • https://drive.google.com/u/0/uc?id=1TcSctGVBajYMA7CFDc158wpvqkpxmkhJ&export=download

Extracted

Family
  • crimsonrat

C2
  • 185.136.161.124

Extracted

Family
  • darkcomet

Botnet
  • Guest1111

C2
  • 193.242.166.48:1605

Mutex
  • DC_MUTEX-2QRLPN3

Attributes
  • InstallPath

    Windupdt\winupdate.exe

  • gencode

    Rb5l52XcV9no

  • install

    true

  • offline_keylogger

    false

  • password

    313131

  • persistence

    true

  • reg_key

    winupdater

rc4.plain

Extracted

Family
  • danabot

C2
  • 51.178.195.151

  • 51.222.39.81

  • 149.255.35.125

  • 38.68.50.179

  • 51.77.7.204

rsa_pubkey.plain

Targets

    • CrimsonRAT main payload

    • Family: Azorult

      An information stealer that was first discovered in 2016, targeting browsing history and passwords.

    • Family: CrimsonRat

      Crimson RAT is a malware linked to a Pakistani-linked threat actor.

    • Family: Danabot

      Danabot is a modular banking Trojan that has been linked with other malware.

    • Family: Darkcomet

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

    • Family: ModiLoader, DBatLoader

      ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

    • Family: RMS

      Remote Manipulator System (RMS) is a remote access tool developed by Russian organization TektonIT.

    • ModiLoader First Stage

    • Modifies WinLogon for persistence

    • Modifies Windows Defender Real-time Protection settings

    • Windows security bypass

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Remote Service Session Hijacking: RDP Hijacking

      Adversaries may hijack a legitimate user's remote desktop session to move laterally within an environment.

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Blocks application from running via registry modification

      Adds application to list of disallowed applications.

    • Modifies Windows Firewall

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Modifies visibility of existing users in the login screen

      A user account was hidden or made visible on the Windows login screen through a registry modification.

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Stops running service(s)

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Password Policy Discovery

      Attempt to access detailed information about the password policy used within an enterprise network.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • UPX packed file

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

MITRE ATT&CK Enterprise v16

Tasks