General

  • Target

    67144b2940e08c635cdb9d38298b79027d604365de4947909d89d48a0694e74a

  • Size

    1.2MB

  • Sample

    221228-w8vjrsec2v

  • MD5

    c50c17057fc6ea67bc579196f1f73712

  • SHA1

    44495db58fa7c94db840a3f696c8f546a5fce2d1

  • SHA256

    67144b2940e08c635cdb9d38298b79027d604365de4947909d89d48a0694e74a

  • SHA512

    7c5eb6317b0a51ae93302adb223d6163a5c771d5b1d8d77462c2463c37f32e0f7f957526a36e39ae5272687e4ebe2faf2d02e68601bc87afc95fc9d7145538aa

  • SSDEEP

    24576:pxsxl/OOeI7RC4CJR5ez+IlnRJE5rABxPJhPPT/q:8fjRERAhPPzq

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://myexternalip.com/raw

Targets

    • Target

      67144b2940e08c635cdb9d38298b79027d604365de4947909d89d48a0694e74a

    • Size

      1.2MB

    • MD5

      c50c17057fc6ea67bc579196f1f73712

    • SHA1

      44495db58fa7c94db840a3f696c8f546a5fce2d1

    • SHA256

      67144b2940e08c635cdb9d38298b79027d604365de4947909d89d48a0694e74a

    • SHA512

      7c5eb6317b0a51ae93302adb223d6163a5c771d5b1d8d77462c2463c37f32e0f7f957526a36e39ae5272687e4ebe2faf2d02e68601bc87afc95fc9d7145538aa

    • SSDEEP

      24576:pxsxl/OOeI7RC4CJR5ez+IlnRJE5rABxPJhPPT/q:8fjRERAhPPzq

    • Matrix Ransomware

      Targeted ransomware with information collection and encryption functionality.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Blocklisted process makes network request

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Sets service image path in registry

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

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

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

File Deletion

2
T1107

Modify Registry

2
T1112

File Permissions Modification

1
T1222

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

3
T1490

Defacement

1
T1491

Tasks