Overview

overview

10

Static

static

3

2024-04-28...ck.exe

windows7-x64

10

2024-04-28...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-28_c3e813de6706d1f5eaf641a6e5457b11_virlock

  • Size

    215KB

  • Sample

    240428-efvkmafh3x

  • MD5

    c3e813de6706d1f5eaf641a6e5457b11

  • SHA1

    168ccd5b3c0918f6d555ade099131eaf2b583e50

  • SHA256

    81bb8a299718e12a61a03040dcfb9a1bfefb56ba7a8d637b30c44ace803f94f5

  • SHA512

    fabc8a3427e62dae0174c272b43ff0654fc3bd0057f3d859e959ee2a94ca871a0fd9028048aa548e791db9577ad764d42c410ee08981ec868bec35abb0e27573

  • SSDEEP

    6144:DmQZk6rLAp9PpiM19TWProEQpZQHwu4sv:DmQZk6rLAp9EM1ReiZ9kv

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-28_c3e813de6706d1f5eaf641a6e5457b11_virlock

    • Size

      215KB

    • MD5

      c3e813de6706d1f5eaf641a6e5457b11

    • SHA1

      168ccd5b3c0918f6d555ade099131eaf2b583e50

    • SHA256

      81bb8a299718e12a61a03040dcfb9a1bfefb56ba7a8d637b30c44ace803f94f5

    • SHA512

      fabc8a3427e62dae0174c272b43ff0654fc3bd0057f3d859e959ee2a94ca871a0fd9028048aa548e791db9577ad764d42c410ee08981ec868bec35abb0e27573

    • SSDEEP

      6144:DmQZk6rLAp9PpiM19TWProEQpZQHwu4sv:DmQZk6rLAp9EM1ReiZ9kv

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (82) 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 Enterprise v15

Reconnaissance

Resource Development

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

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

4
T1112

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

Command and Control

Exfiltration

Impact

Tasks