General

  • Target

    https://github.com/Dfmaaa/MEMZ-virus/raw/main/MEMZ.exe

  • Sample

    240419-bp9t5ade6z

Malware Config

Targets

    • Target

      https://github.com/Dfmaaa/MEMZ-virus/raw/main/MEMZ.exe

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • 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.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Suspicious use of NtCreateThreadExHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Defense Evasion

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Discovery

Query Registry

4
T1012

System Information Discovery

3
T1082

Command and Control

Web Service

1
T1102

Tasks