Overview

overview

10

Static

static

3

2024-05-25...ck.exe

windows7-x64

10

2024-05-25...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-25_f3439ffb42bfeb533a98d44a8fcc688c_virlock

  • Size

    192KB

  • Sample

    240525-ptwpysbf7w

  • MD5

    f3439ffb42bfeb533a98d44a8fcc688c

  • SHA1

    ff36d15fe6395bd6fde81cd8ea8b3380c358dce1

  • SHA256

    c6ac5c08c526e3933514ecce5e067fa8516048d620c91d8618c2ed54872f5aa3

  • SHA512

    5322b41d1f0c6d10d0726bf7c6ea2481c6b240ebe51352ba06a1674b59b110b178b833dbbc3161787c26394e3326a09cbc9a3e6736395753e62a14bd192225f9

  • SSDEEP

    3072:dPyTVtqWMCmGMZyUoWjPOsqZzOvFnHMw0CLM9SXTcThSKjhHNRYsEdw3HRF+YyWv:dPaOjmsrMrEM98TctSKysEoHzrEp

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-25_f3439ffb42bfeb533a98d44a8fcc688c_virlock

    • Size

      192KB

    • MD5

      f3439ffb42bfeb533a98d44a8fcc688c

    • SHA1

      ff36d15fe6395bd6fde81cd8ea8b3380c358dce1

    • SHA256

      c6ac5c08c526e3933514ecce5e067fa8516048d620c91d8618c2ed54872f5aa3

    • SHA512

      5322b41d1f0c6d10d0726bf7c6ea2481c6b240ebe51352ba06a1674b59b110b178b833dbbc3161787c26394e3326a09cbc9a3e6736395753e62a14bd192225f9

    • SSDEEP

      3072:dPyTVtqWMCmGMZyUoWjPOsqZzOvFnHMw0CLM9SXTcThSKjhHNRYsEdw3HRF+YyWv:dPaOjmsrMrEM98TctSKysEoHzrEp

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (59) 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