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_14b8ac4486abc8b6631bb16dd7f7a073_virlock

  • Size

    570KB

  • Sample

    240328-nj6xhabc5w

  • MD5

    14b8ac4486abc8b6631bb16dd7f7a073

  • SHA1

    971a8c2d7ae4cd1e58e4104d80959c6e906494b3

  • SHA256

    3241add9a22accfc02a75122929727c29709ba31ea2ee8e2ec3ed4def273046a

  • SHA512

    ba3d8959d94932ce3237c7855b1647705bd016d421f8e4d668ea4ab0ccc894f53c99d7d309eb6643479afea37a247cbf3610a082cd272d961ae70b6ef330f243

  • SSDEEP

    12288:ijN8g5vR4f5Gts0h3XXT5nJ50wTLBmwHgT29LGuMjCYM:ijNP5vR4fsts0ddJpTY+x

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_14b8ac4486abc8b6631bb16dd7f7a073_virlock

    • Size

      570KB

    • MD5

      14b8ac4486abc8b6631bb16dd7f7a073

    • SHA1

      971a8c2d7ae4cd1e58e4104d80959c6e906494b3

    • SHA256

      3241add9a22accfc02a75122929727c29709ba31ea2ee8e2ec3ed4def273046a

    • SHA512

      ba3d8959d94932ce3237c7855b1647705bd016d421f8e4d668ea4ab0ccc894f53c99d7d309eb6643479afea37a247cbf3610a082cd272d961ae70b6ef330f243

    • SSDEEP

      12288:ijN8g5vR4f5Gts0h3XXT5nJ50wTLBmwHgT29LGuMjCYM:ijNP5vR4fsts0ddJpTY+x

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (74) 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