Overview

overview

10

Static

static

3

2024-05-24...ck.exe

windows7-x64

10

2024-05-24...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-24_4aa9fa508c29d180182fd46b458c3d45_virlock

  • Size

    186KB

  • Sample

    240524-eaexzsbh29

  • MD5

    4aa9fa508c29d180182fd46b458c3d45

  • SHA1

    11887d2a2379f3fa20b641bcb7beb21eec6f3b68

  • SHA256

    a9cea6d2aa276b155ff75470230ea28735d9f36619f85197e9a9eec81788ab85

  • SHA512

    f320c06d04b4335761ad2b6717c775fc3433657ada320216ffe5d6f31e478598c3c879aae81a0145b3b619373ee729f434bc17f26632e1b5470259f524a90589

  • SSDEEP

    3072:Bo41Fyay14bZhykPagbGUlcP003HloLhJO8cvaFmzj4et8CyPJYbwKgkDm:mj1aTdPabE03FuKaFMyPJYbwVAm

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-24_4aa9fa508c29d180182fd46b458c3d45_virlock

    • Size

      186KB

    • MD5

      4aa9fa508c29d180182fd46b458c3d45

    • SHA1

      11887d2a2379f3fa20b641bcb7beb21eec6f3b68

    • SHA256

      a9cea6d2aa276b155ff75470230ea28735d9f36619f85197e9a9eec81788ab85

    • SHA512

      f320c06d04b4335761ad2b6717c775fc3433657ada320216ffe5d6f31e478598c3c879aae81a0145b3b619373ee729f434bc17f26632e1b5470259f524a90589

    • SSDEEP

      3072:Bo41Fyay14bZhykPagbGUlcP003HloLhJO8cvaFmzj4et8CyPJYbwKgkDm:mj1aTdPabE03FuKaFMyPJYbwVAm

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (57) 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.

    • Deletes itself

    • 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