Overview

overview

10

Static

static

3

2024-03-28...ck.exe

windows7-x64

10

2024-03-28...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-03-28_71ca599ebb66ab00b6287936f83aa904_virlock

  • Size

    228KB

  • Sample

    240328-c6wt9sba78

  • MD5

    71ca599ebb66ab00b6287936f83aa904

  • SHA1

    40a85c8ea88a083e764c63ff51ebddb4e331aead

  • SHA256

    dc41d039b6a1afe7c97f3dd323db905b4ff3203dc8f1f10c281448c1677ae653

  • SHA512

    c415dd5499c8e1e3afb2331560dc195c2abc53ea762661a72c034741d6222079729f802a8ef20e207b677724972f7265a1ff79e8b855c617e9a8cfa65a47f63e

  • SSDEEP

    3072:oc39PUvx11djVD7R3Fffjh74FMEBymfq8ZHofVZJ1UVn58J87jbWUJECN9FFFFFI:oMoZJVffjhQJi2qXS7jbWU/

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_71ca599ebb66ab00b6287936f83aa904_virlock

    • Size

      228KB

    • MD5

      71ca599ebb66ab00b6287936f83aa904

    • SHA1

      40a85c8ea88a083e764c63ff51ebddb4e331aead

    • SHA256

      dc41d039b6a1afe7c97f3dd323db905b4ff3203dc8f1f10c281448c1677ae653

    • SHA512

      c415dd5499c8e1e3afb2331560dc195c2abc53ea762661a72c034741d6222079729f802a8ef20e207b677724972f7265a1ff79e8b855c617e9a8cfa65a47f63e

    • SSDEEP

      3072:oc39PUvx11djVD7R3Fffjh74FMEBymfq8ZHofVZJ1UVn58J87jbWUJECN9FFFFFI:oMoZJVffjhQJi2qXS7jbWU/

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (87) files with added filename extension

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

      ransomware

    • 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.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

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

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks