General

  • Target

    https://github.com/Da2dalus/The-MALWARE-Repo/blob/master/Ransomware/%24uckyLocker.exe

  • Sample

    240317-1aqv5sgd43

Malware Config

Targets

    • Target

      https://github.com/Da2dalus/The-MALWARE-Repo/blob/master/Ransomware/%24uckyLocker.exe

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (84) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

2
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

2
T1490

Defacement

1
T1491

Tasks