General

  • Target
    https://cdn.discordapp.com/attachments/1174482745112670279/1223288341345206387/Reaper.zip?ex=66194f0c&is=6606da0c&hm=5251b16de1015e86615dd6d09f8d82f63834fc0d27e16ddeb4b6e29307b79e34&
  • Sample240404-mdltpscc6t

Malware Config

Extracted

Family
  • asyncrat

Version
  • L838 RAT v1.0.0

Botnet
  • Default

C2
  • 127.0.0.1:54984

  • 127.0.0.1:4449

  • l838.ddns.net:54984

  • l838.ddns.net:4449

Mutex
  • azjrpxchkiev

Attributes
  • delay

    1

  • install

    true

  • install_file

    Windows Driver Foundation.exe

  • install_folder

    %Temp%

aes.plain

Extracted

Family
  • xworm

C2
  • l838.ddns.net:3232

Attributes
  • Install_directory

    %Public%

  • install_file

    Windows Service Wrapper.exe

Targets

    • Target
      https://cdn.discordapp.com/attachments/1174482745112670279/1223288341345206387/Reaper.zip?ex=66194f0c&is=6606da0c&hm=5251b16de1015e86615dd6d09f8d82f63834fc0d27e16ddeb4b6e29307b79e34&
    • AsyncRat

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

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Async RAT payload

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • UPX packed file

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

MITRE ATT&CK Enterprise v15

Tasks