Overview

overview

10

Static

static

3

MrsMajor2.0.rar

windows10-ltsc_2021-x64

1

MrsMajor2.0.exe

windows10-ltsc_2021-x64

Sharing

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General

  • Target
    MrsMajor2.0.rar
  • Size 19.7MB
  • Sample260418-tlj4eacy4n
  • SHA256 3a8638a764c9b0828df230fac613d0b7402c21189f6a1148adca402472b31141
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryevasionexploitpersistencetrojan

Malware Config

Targets

    • Target
      MrsMajor2.0.rar
    • Size 19.7MB
    • SHA256 3a8638a764c9b0828df230fac613d0b7402c21189f6a1148adca402472b31141
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    behavioral1
    • Target
      MrsMajor2.0.exe
    • Size 25.6MB
    • SHA256 5dd4ea169cabf9226f54bb53e63ea6a1b5880a0d1222242aee378efb6255b57d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryevasionexploitpersistencetrojan

    • Modifies WinLogon for persistence

      persistence

    • Modifies Windows Defender DisableAntiSpyware settings

      evasiontrojan

    • UAC bypass

      defense_evasiontrojan

    • Disables RegEdit via registry modification

      defense_evasion

    • Disables Task Manager via registry modification

      defense_evasion

    • 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

    • Drops file in System32 directory

    behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

File and Directory Permissions Modification

1
T1222

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Modify Registry

6
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks