hxxps://github[.]com/TheDarkMythos/windows-malware/blob/master/MrsMajor%202[.]0/MrsMajor2[.]0[.]exe | Triage

Resubmissions

19-11-2024 19:25

241119-x5bsxswjdq 10

19-11-2024 19:22

241119-x3fn4a1fpp 10

Sharing

General

Target

https://github.com/TheDarkMythos/windows-malware/blob/master/MrsMajor%202.0/MrsMajor2.0.exe
Sample

241119-x3fn4a1fpp

Score

10^/10

discovery evasion exploit persistence trojan

Malware Config

Targets

- Target
  
  https://github.com/TheDarkMythos/windows-malware/blob/master/MrsMajor%202.0/MrsMajor2.0.exe
Score

10^/10

discovery evasion exploit persistence trojan
- Modifies WinLogon for persistence
  persistence
- UAC bypass
  evasion trojan
- Disables RegEdit via registry modification
  evasion
- Disables Task Manager via registry modification
  evasion
- Downloads MZ/PE file
- Possible privilege escalation attempt
  exploit
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
- Modifies file permissions
  discovery
- Modifies system executable filetype association
  persistence
- Adds Run key to start application
  persistence
- Legitimate hosting services abused for malware hosting/C2
- Drops file in System32 directory
behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Event Triggered Execution

Change Default File Association

Privilege Escalation

Abuse Elevation Control Mechanism

Bypass User Account Control

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Event Triggered Execution

Change Default File Association

Defense Evasion

Abuse Elevation Control Mechanism

Bypass User Account Control

File and Directory Permissions Modification

Impair Defenses

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

System Location Discovery

System Language Discovery

Lateral Movement

Collection

Command and Control

Web Service

Exfiltration

Impact

Tasks

static1

urlscan1

behavioral1

discoveryevasionexploitpersistencetrojan