General

  • Target
    Flash-USDT-Sender v2 (2).zip
  • Size 808KB
  • Sample240603-t3ha5sdf86
  • SHA256 8018d4a6776fd432ea3d84c4c5cd576894362ef2212f66ec5c4ce6964a78016c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 2.1.0.0

Botnet
  • Office04

C2
  • 146.70.34.130:7812

Mutex
  • VNM_MUTEX_c2q7y2ayYutZ2XaYe7

Attributes
  • encryption_key

    xwXT4WCNnk3vInV5C8eN

  • install_name

    Windows Security Health Service.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Security Health Service

  • subdirectory

    Windows Security Health Service

Extracted

Family
  • xworm

C2
  • 146.70.34.130:7812

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

  • telegram

    https://api.telegram.org/bot6110313252:AAE6fFOzBefHnbenT-1DwxI9EBeZQTxbYGk/sendMessage?chat_id=6291749148

Extracted

Family
  • asyncrat

Botnet
  • Default

C2
  • 127.0.0.1:6606

  • 127.0.0.1:7707

  • 127.0.0.1:8808

  • https://api.telegram.org/bot6110313252:AAE6fFOzBefHnbenT-1DwxI9EBeZQTxbYGk/sendMessage?chat_id=6291749148

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target
      Flash-USDT-main/Flash USDT v2.exe
    • Size 918KB
    • SHA256 5c9d92a9fc8a5399e2dc146af2c5dfbfdbbf94cd11ea331e9422626026470279
    • MD5 SHA1 SHA512 SSDEEP
    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • Modifies Windows Defender Real-time Protection settings

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • VenomRAT

      VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Windows security modification

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Looks up external IP address via web service

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

    • Looks up geolocation information via web service

      Uses a legitimate geolocation service to find the infected system's geolocation info.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks