General

  • Target

    https://cryptocurrencysplcfx.com/map/Allergy_document.pdf.zip

  • Sample

    230807-gk3g5sdh24

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1136289516206956546/U2aS5CJPqDV1OobfbiAj6zpDaSbZlgUvoBEbI_xUq34ib1t_tYhlgrzbNXjwKp7QL65n

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

C2

89.23.101.38:5306

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      https://cryptocurrencysplcfx.com/map/Allergy_document.pdf.zip

    • AsyncRat

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

    • Detect Umbral payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Async RAT payload

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks