Overview

overview

10

Static

static

3

2024-04-25...ck.exe

windows7-x64

10

2024-04-25...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-25_71ad0e3e2809f7f9dbff91074139f529_virlock

  • Size

    450KB

  • Sample

    240425-g8fchsge42

  • MD5

    71ad0e3e2809f7f9dbff91074139f529

  • SHA1

    051f64eaffd4a643ce93f325e1907af28ab6fa6c

  • SHA256

    91602733ebbc96c16cc7cf87cca1c7a998a0d599989d3009fd828f805a37ff4f

  • SHA512

    8afab08bfb425910a9bb84b84813296b02f7926250d8150ea06dfa1c7e1ed874ba41dcd5a5d9c98394ec88c17b0e0f23490d4a04bc6848566d3ef5eadd9faec9

  • SSDEEP

    12288:VZ4kHUhm+vruW/pXTaDF9WzIHHtZBPuRmNh:c0urfpXTKnEIHHtZAC

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-25_71ad0e3e2809f7f9dbff91074139f529_virlock

    • Size

      450KB

    • MD5

      71ad0e3e2809f7f9dbff91074139f529

    • SHA1

      051f64eaffd4a643ce93f325e1907af28ab6fa6c

    • SHA256

      91602733ebbc96c16cc7cf87cca1c7a998a0d599989d3009fd828f805a37ff4f

    • SHA512

      8afab08bfb425910a9bb84b84813296b02f7926250d8150ea06dfa1c7e1ed874ba41dcd5a5d9c98394ec88c17b0e0f23490d4a04bc6848566d3ef5eadd9faec9

    • SSDEEP

      12288:VZ4kHUhm+vruW/pXTaDF9WzIHHtZBPuRmNh:c0urfpXTKnEIHHtZAC

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (85) 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