Overview

overview

10

Static

static

3

2024-04-26...ck.exe

windows7-x64

10

2024-04-26...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-26_43a945ccc2d99ab669fa84f0acb31272_virlock

  • Size

    117KB

  • Sample

    240426-s6qk9aeg68

  • MD5

    43a945ccc2d99ab669fa84f0acb31272

  • SHA1

    1e61b384220de9bc8f994c7cd6a7f9486e52fbfd

  • SHA256

    cb2df46750a6f585485eec85a425dde5d6afb1eb360823e894c03383c38738e2

  • SHA512

    d6a33f17e86ab22a4a0dfc27f7ad0555ccaa836ac6cca33eac13de70ee8ff7f9f3bdf1ca047876ff53fe31370255333f6d560175628520b118c666d511dd2dba

  • SSDEEP

    3072:J1PP8+ij5wKp3Csdclg+Y8iOKi3sgv6l/FxfyLcOwQXZyzX66m5NzvKN:D9liCplg+Y8iG3ncwXk7gNrY

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-26_43a945ccc2d99ab669fa84f0acb31272_virlock

    • Size

      117KB

    • MD5

      43a945ccc2d99ab669fa84f0acb31272

    • SHA1

      1e61b384220de9bc8f994c7cd6a7f9486e52fbfd

    • SHA256

      cb2df46750a6f585485eec85a425dde5d6afb1eb360823e894c03383c38738e2

    • SHA512

      d6a33f17e86ab22a4a0dfc27f7ad0555ccaa836ac6cca33eac13de70ee8ff7f9f3bdf1ca047876ff53fe31370255333f6d560175628520b118c666d511dd2dba

    • SSDEEP

      3072:J1PP8+ij5wKp3Csdclg+Y8iOKi3sgv6l/FxfyLcOwQXZyzX66m5NzvKN:D9liCplg+Y8iG3ncwXk7gNrY

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (88) 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