Resubmissions

17-09-2024 16:20

240917-ttcpasscrd 4

17-09-2024 16:08

240917-tlmjja1hrf 6

17-09-2024 16:03

240917-the1aa1gnc 10

17-09-2024 15:53

240917-tbyh2s1fpm 8

17-09-2024 15:46

240917-s738qs1dqn 10

16-09-2024 16:27

240916-tx94zaxgjm 3

16-09-2024 16:00

240916-tfqc8swerd 10

16-09-2024 15:57

240916-td4svawflr 6

29-08-2024 23:57

240829-3zs3xazamm 3

General

  • Target

    https://valkyrieofficial.vercel.app/

  • Sample

    240916-tfqc8swerd

Malware Config

Targets

    • Target

      https://valkyrieofficial.vercel.app/

    • Modifies WinLogon for persistence

    • UAC bypass

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Possible privilege escalation attempt

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

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

    • Sets desktop wallpaper using registry

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Defense Evasion

Modify Registry

5
T1112

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

File and Directory Permissions Modification

1
T1222

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Software Discovery

1
T1518

Security Software Discovery

1
T1518.001

Browser Information Discovery

1
T1217

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Command and Control

Web Service

1
T1102

Impact

Defacement

1
T1491

Tasks