General

  • Target

    o.txt

  • Size

    29B

  • Sample

    240620-wgrnssthnp

  • MD5

    a7189cd3f729f2f033024856065bf511

  • SHA1

    388a47d24febcc9374fefbce9c314c5f5c8ade30

  • SHA256

    ef7524d3b360d66dea74293d427dd93444a4aa1496dbd7f0ff0726f6da97893f

  • SHA512

    9923bdf127840b63bcfc77a8d49d5dc059e68e19ebb67547bd739474552672553afb9ec5a5d91baf97dcae6f7ec711390950fb906f1380dab97297eb9d66833a

Malware Config

Targets

    • Target

      o.txt

    • Size

      29B

    • MD5

      a7189cd3f729f2f033024856065bf511

    • SHA1

      388a47d24febcc9374fefbce9c314c5f5c8ade30

    • SHA256

      ef7524d3b360d66dea74293d427dd93444a4aa1496dbd7f0ff0726f6da97893f

    • SHA512

      9923bdf127840b63bcfc77a8d49d5dc059e68e19ebb67547bd739474552672553afb9ec5a5d91baf97dcae6f7ec711390950fb906f1380dab97297eb9d66833a

    • MilleniumRat

      MilleniumRat is a remote access trojan written in C#.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Contacts a large (7016) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Stops running service(s)

    • Checks computer location settings

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

    • 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

    • Adds Run key to start application

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • 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.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks