Overview

overview

10

Static

static

3

2024-03-28...ck.exe

windows7-x64

10

2024-03-28...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-03-28_26590ee1fd757f1adc042c7b35b17944_virlock

  • Size

    316KB

  • Sample

    240328-czhn3aah53

  • MD5

    26590ee1fd757f1adc042c7b35b17944

  • SHA1

    8ee4b69168355c83fdbd77ac3ad88b2348afe10a

  • SHA256

    df745942b6f9c0a5d4a8e072e711f0037c9d9e42d2a4adc6e10e966ec739f5d0

  • SHA512

    f21e02f1a7ed612a07e3ea02406c0522ae4bf243d0d53adeb5e80dd89c0a2e6b6220f631c897fa05fa9f7b143c2f159a7b9b25cba1eee1b336f97164de227691

  • SSDEEP

    6144:CcKrvIVJtBO24gNaINwLoZCtdGb/VzuZ1lbpipOqEyGughV:CcYvIzZvZ4gb/Fu9piQqEyohV

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_26590ee1fd757f1adc042c7b35b17944_virlock

    • Size

      316KB

    • MD5

      26590ee1fd757f1adc042c7b35b17944

    • SHA1

      8ee4b69168355c83fdbd77ac3ad88b2348afe10a

    • SHA256

      df745942b6f9c0a5d4a8e072e711f0037c9d9e42d2a4adc6e10e966ec739f5d0

    • SHA512

      f21e02f1a7ed612a07e3ea02406c0522ae4bf243d0d53adeb5e80dd89c0a2e6b6220f631c897fa05fa9f7b143c2f159a7b9b25cba1eee1b336f97164de227691

    • SSDEEP

      6144:CcKrvIVJtBO24gNaINwLoZCtdGb/VzuZ1lbpipOqEyGughV:CcYvIzZvZ4gb/Fu9piQqEyohV

    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
    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