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_4e8bc681c6d1b3ea2c1196ef8840dd1a_virlock

  • Size

    185KB

  • Sample

    240523-nngheaee68

  • MD5

    4e8bc681c6d1b3ea2c1196ef8840dd1a

  • SHA1

    46cb5b8e1c28da417cfbb47cf6453891155e91da

  • SHA256

    da0a38dcf456ef59cbe80d302caf783aeb4e637ae4b9c71996d749e62927246c

  • SHA512

    861a936cd1738b5b2e3af88bd53a60618653d8b263bf30e2dfccafc4bec72cccbe91938ff1958992c70b0a42a020e8d06f7bed6df5837430403ad1be4e4944d7

  • SSDEEP

    3072:LPD6zEMcVkaVwuNglk6QKdoRm1UcdJTVLezsUKJZHIrHWpAg/TA2VNW2Y:L76zE5uK8n3Uz+JZH42pA4TA

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-23_4e8bc681c6d1b3ea2c1196ef8840dd1a_virlock

    • Size

      185KB

    • MD5

      4e8bc681c6d1b3ea2c1196ef8840dd1a

    • SHA1

      46cb5b8e1c28da417cfbb47cf6453891155e91da

    • SHA256

      da0a38dcf456ef59cbe80d302caf783aeb4e637ae4b9c71996d749e62927246c

    • SHA512

      861a936cd1738b5b2e3af88bd53a60618653d8b263bf30e2dfccafc4bec72cccbe91938ff1958992c70b0a42a020e8d06f7bed6df5837430403ad1be4e4944d7

    • SSDEEP

      3072:LPD6zEMcVkaVwuNglk6QKdoRm1UcdJTVLezsUKJZHIrHWpAg/TA2VNW2Y:L76zE5uK8n3Uz+JZH42pA4TA

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (51) 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