General

  • Target

    2024-06-13_0e8673e21da50aebb0371aa1fc0b3018_virlock

  • Size

    207KB

  • Sample

    240613-fbnf7ayapq

  • MD5

    0e8673e21da50aebb0371aa1fc0b3018

  • SHA1

    6477b6154b876c7e2056af3e0da5b447c0aa242d

  • SHA256

    f230a763682c9b88c68da84edfb3758a399878aa3b0824a185440805f2ad02be

  • SHA512

    5df805012712cc13b199a30169a3894c86c2fa98962a3f0892bfb2d6fd8f74daef8374f45d2da24e5d61da643a7e858c707359db547dacd983969e73931d320b

  • SSDEEP

    3072:VMggKxb5ct9NaLaViVzx4kLUzDi02owyqwZf2l9cz3nDM:ag3xb5qpnlzDegqwZ+9gA

Malware Config

Targets

    • Target

      2024-06-13_0e8673e21da50aebb0371aa1fc0b3018_virlock

    • Size

      207KB

    • MD5

      0e8673e21da50aebb0371aa1fc0b3018

    • SHA1

      6477b6154b876c7e2056af3e0da5b447c0aa242d

    • SHA256

      f230a763682c9b88c68da84edfb3758a399878aa3b0824a185440805f2ad02be

    • SHA512

      5df805012712cc13b199a30169a3894c86c2fa98962a3f0892bfb2d6fd8f74daef8374f45d2da24e5d61da643a7e858c707359db547dacd983969e73931d320b

    • SSDEEP

      3072:VMggKxb5ct9NaLaViVzx4kLUzDi02owyqwZf2l9cz3nDM:ag3xb5qpnlzDegqwZ+9gA

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (87) files with added filename extension

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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 file in System32 directory

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

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Modify Registry

4
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

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Tasks