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General

  • Target

    .bat

  • Size

    35KB

  • Sample

    250122-wh338axqgz

  • MD5

    e0f14d8b4e040e347ac4c68fa65ab34d

  • SHA1

    7792151bebcc851456faf92760e66e63fd9db8b8

  • SHA256

    7944c6a800e3956afceb244e4b58d6368858879cef8d225c0c870646e29405d5

  • SHA512

    cacaaef3f5184ed6a0c2f7655114dabeee7bf5e163d65a1758ba209ceeac97c5d79210fc0c6d1c98ff2ac9c1664ddbbde00f3587af1cc9983d0047a3c3205991

  • SSDEEP

    768:x+R8e3f87iaNQeCOarasWNMb5yMqX/9MFRb:+3UdNQAarapE

Malware Config

Extracted

Family

asyncrat

Version

L838 RAT v1.0.0

Botnet

Default

C2

127.0.0.1:54984

coinbasecrashout.ddns.net:54984

Mutex

jggjyaadwawdag

Attributes
  • delay

    3

  • install

    true

  • install_file

    Windows Font Manager.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

xworm

C2

https://pastebin.com/raw/rVJQPNVe:1135

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    Windows Security Wrapper.exe

  • pastebin_url

    https://pastebin.com/raw/rVJQPNVe

Targets

    • Target

      .bat

    • Size

      35KB

    • MD5

      e0f14d8b4e040e347ac4c68fa65ab34d

    • SHA1

      7792151bebcc851456faf92760e66e63fd9db8b8

    • SHA256

      7944c6a800e3956afceb244e4b58d6368858879cef8d225c0c870646e29405d5

    • SHA512

      cacaaef3f5184ed6a0c2f7655114dabeee7bf5e163d65a1758ba209ceeac97c5d79210fc0c6d1c98ff2ac9c1664ddbbde00f3587af1cc9983d0047a3c3205991

    • SSDEEP

      768:x+R8e3f87iaNQeCOarasWNMb5yMqX/9MFRb:+3UdNQAarapE

    • AsyncRat

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

    • Asyncrat family

    • Detect Xworm Payload

    • VenomRAT

      Detects VenomRAT.

    • Venomrat family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Async RAT payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

      Powershell Invoke Web Request.

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • Drops startup file

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • 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.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks