Overview

overview

10

Static

static

3

2024-05-23...ck.exe

windows7-x64

10

2024-05-23...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-23_7fc79caa7541966cf46b0a871e17f7d9_virlock

  • Size

    645KB

  • Sample

    240523-g8q41sgd5s

  • MD5

    7fc79caa7541966cf46b0a871e17f7d9

  • SHA1

    27630fd69f0dc90f144fb0c6d20f7a63e2eae3d7

  • SHA256

    10d4516c85859177c93ad4125e95490dc9dcce11a3b5c67a81e0545473afd798

  • SHA512

    5d53a2c187f6ff0201126c5bb933563df64ccd1c5c2eb6e76049ae32ac63b8d08c4b5057b873830392a57b954dba600dae4ecdf5e49f8857f9517ec733c03961

  • SSDEEP

    12288:F4njaiOk5isF+SiShRc8Xq9miG/F9OvWK9dv:SaiT5isISiF9PWId

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-23_7fc79caa7541966cf46b0a871e17f7d9_virlock

    • Size

      645KB

    • MD5

      7fc79caa7541966cf46b0a871e17f7d9

    • SHA1

      27630fd69f0dc90f144fb0c6d20f7a63e2eae3d7

    • SHA256

      10d4516c85859177c93ad4125e95490dc9dcce11a3b5c67a81e0545473afd798

    • SHA512

      5d53a2c187f6ff0201126c5bb933563df64ccd1c5c2eb6e76049ae32ac63b8d08c4b5057b873830392a57b954dba600dae4ecdf5e49f8857f9517ec733c03961

    • SSDEEP

      12288:F4njaiOk5isF+SiShRc8Xq9miG/F9OvWK9dv:SaiT5isISiF9PWId

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (61) 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