Overview

overview

10

Static

static

3

2024-03-08...ck.exe

windows7-x64

10

2024-03-08...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-03-08_3fef4e434a2b45541e882a41ea7e4a47_virlock

  • Size

    119KB

  • Sample

    240308-by8cnacf3w

  • MD5

    3fef4e434a2b45541e882a41ea7e4a47

  • SHA1

    79725b3df9f1858b117aff859ef8ac5c36d73968

  • SHA256

    da00aaff8dca2b61281a2333efdb112b32ebb2262cdd3aaf161e8c845e523569

  • SHA512

    93a9c5fc7217c25354ebcfa5c02e2e004055ea66c76ad1378426c54e08b66af3a721f4a7c525dcd3d99ea0da4f3d2557027a45ef3221b60aa322d3516ba46c65

  • SSDEEP

    3072:wX5np3fMjagSRv2KJPwUDS7+ZlsogJ/WHUHv:W3UjbSjJqJ/kY

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-08_3fef4e434a2b45541e882a41ea7e4a47_virlock

    • Size

      119KB

    • MD5

      3fef4e434a2b45541e882a41ea7e4a47

    • SHA1

      79725b3df9f1858b117aff859ef8ac5c36d73968

    • SHA256

      da00aaff8dca2b61281a2333efdb112b32ebb2262cdd3aaf161e8c845e523569

    • SHA512

      93a9c5fc7217c25354ebcfa5c02e2e004055ea66c76ad1378426c54e08b66af3a721f4a7c525dcd3d99ea0da4f3d2557027a45ef3221b60aa322d3516ba46c65

    • SSDEEP

      3072:wX5np3fMjagSRv2KJPwUDS7+ZlsogJ/WHUHv:W3UjbSjJqJ/kY

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (84) 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.

    • 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