General

  • Target

    main.exe

  • Size

    36.9MB

  • Sample

    240604-nlbjdafb37

  • MD5

    4ce7dec7f0af15277eec727a9e20142e

  • SHA1

    5bae148e9a1865370d25d805439e60f057806a04

  • SHA256

    fccf2be42bab41f3d1f8bb7778765729cdf5ed10a0bd65871ba3bd2b827c2402

  • SHA512

    123fac8db9b2fea104fed3c57e304402bf1c02dbf1f19046f67ecadab67ed95af71ee8661e9d7b7b87a5b0cf092fa65fddc206d3557ada0b876ac00e6b2185b5

  • SSDEEP

    786432:xRaNrdmuVZJW4j1B6O7WfE1StERPeJSu/6jsdbOr4q:xR0rEuTJWSfbyfEItERPeguAsd

Malware Config

Targets

    • Target

      main.exe

    • Size

      36.9MB

    • MD5

      4ce7dec7f0af15277eec727a9e20142e

    • SHA1

      5bae148e9a1865370d25d805439e60f057806a04

    • SHA256

      fccf2be42bab41f3d1f8bb7778765729cdf5ed10a0bd65871ba3bd2b827c2402

    • SHA512

      123fac8db9b2fea104fed3c57e304402bf1c02dbf1f19046f67ecadab67ed95af71ee8661e9d7b7b87a5b0cf092fa65fddc206d3557ada0b876ac00e6b2185b5

    • SSDEEP

      786432:xRaNrdmuVZJW4j1B6O7WfE1StERPeJSu/6jsdbOr4q:xR0rEuTJWSfbyfEItERPeguAsd

    • MilleniumRat

      MilleniumRat is a remote access trojan written in C#.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Command and Scripting Interpreter: PowerShell

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

    • Contacts a large (933) amount of remote hosts

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

    • Stops running service(s)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • 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.

    • 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.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks