Overview

overview

10

Static

static

3

2024-05-25...ck.exe

windows7-x64

10

2024-05-25...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-05-25_abae8744e64b04dc844ecb6a9b6ac6cc_virlock

  • Size

    417KB

  • Sample

    240525-gw21ragh76

  • MD5

    abae8744e64b04dc844ecb6a9b6ac6cc

  • SHA1

    f837f4f239ab8c1025c8aa014280149ee6cc4391

  • SHA256

    36627bb8bc7c1054daaf47a53f9c8b11aa42dc59ea160f6c25216f8389ac3bcd

  • SHA512

    bd7ccaf5adaf2b80afcdeee25ec3b79196b559919a9213151dff3e6fc95597dfe3211d3f9f64910c7809b94612165e24469beadb9591837a6c9b0f88aa1ab600

  • SSDEEP

    6144:E60DbIcPkeQ41tA9jzDG76B2kT3zxreEf9P3QNvo1:HybEefajewT3zwo1

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-25_abae8744e64b04dc844ecb6a9b6ac6cc_virlock

    • Size

      417KB

    • MD5

      abae8744e64b04dc844ecb6a9b6ac6cc

    • SHA1

      f837f4f239ab8c1025c8aa014280149ee6cc4391

    • SHA256

      36627bb8bc7c1054daaf47a53f9c8b11aa42dc59ea160f6c25216f8389ac3bcd

    • SHA512

      bd7ccaf5adaf2b80afcdeee25ec3b79196b559919a9213151dff3e6fc95597dfe3211d3f9f64910c7809b94612165e24469beadb9591837a6c9b0f88aa1ab600

    • SSDEEP

      6144:E60DbIcPkeQ41tA9jzDG76B2kT3zxreEf9P3QNvo1:HybEefajewT3zwo1

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (52) 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