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_9d3d1c00327687109407abc8badbde36_virlock

  • Size

    186KB

  • Sample

    240524-w44a4seg2s

  • MD5

    9d3d1c00327687109407abc8badbde36

  • SHA1

    b6dae2d12fdd7e0d8d09e3400cb3e6274cb72b90

  • SHA256

    4cecb2df677c152f8e95a952c2c5f05ce443bbeaf547ff401ee66a752dfc8f13

  • SHA512

    5f02912b8607f70b1585c54ca5544afa2b4d3229767e2e94c2eac45cf0b13a289d37f5de1059d917c9cd96a68d30f8254e23c295d2abb6a49d1bb9d4108dead0

  • SSDEEP

    3072:4axc8vz5CGw7CD4h3utsYlbBSQ8MLW4B1bDRAxe3SxuekTYk/:Rxc8vz5CGwmD4h3utDBSpt4BYWSxupTB

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-24_9d3d1c00327687109407abc8badbde36_virlock

    • Size

      186KB

    • MD5

      9d3d1c00327687109407abc8badbde36

    • SHA1

      b6dae2d12fdd7e0d8d09e3400cb3e6274cb72b90

    • SHA256

      4cecb2df677c152f8e95a952c2c5f05ce443bbeaf547ff401ee66a752dfc8f13

    • SHA512

      5f02912b8607f70b1585c54ca5544afa2b4d3229767e2e94c2eac45cf0b13a289d37f5de1059d917c9cd96a68d30f8254e23c295d2abb6a49d1bb9d4108dead0

    • SSDEEP

      3072:4axc8vz5CGw7CD4h3utsYlbBSQ8MLW4B1bDRAxe3SxuekTYk/:Rxc8vz5CGwmD4h3utDBSpt4BYWSxupTB

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (65) files with added filename extension

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

      ransomware

    • Blocklisted process makes network request

    • 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