Overview

overview

10

Static

static

3

2024-05-23...ck.exe

windows7-x64

10

2024-05-23...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-05-23_f36aff485a3937cf973ebb1c5cd08f19_virlock

  • Size

    897KB

  • Sample

    240523-ygr1nsea54

  • MD5

    f36aff485a3937cf973ebb1c5cd08f19

  • SHA1

    c4c7a710d2d1170fd061d381b6c72abb30bd4dc9

  • SHA256

    d380501b4c9c646f331d46a7c8a8a065879556fe526a97a3060aa106b6607956

  • SHA512

    b9a7b9885b7ac34ccc2bc86c6ba6bca6b33c2dbbfd3c48da42766e4ed065d085dff46e23ed8a77f409faf0b89722684b96f1be745ffe1702cea362a43f74ddf3

  • SSDEEP

    24576:IZUcAxHGyCKIFxUZYuF4yLZAt4v4xM9W5rLg:IZYGyCTFxUZ+yLZAt4v4Cs5

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-23_f36aff485a3937cf973ebb1c5cd08f19_virlock

    • Size

      897KB

    • MD5

      f36aff485a3937cf973ebb1c5cd08f19

    • SHA1

      c4c7a710d2d1170fd061d381b6c72abb30bd4dc9

    • SHA256

      d380501b4c9c646f331d46a7c8a8a065879556fe526a97a3060aa106b6607956

    • SHA512

      b9a7b9885b7ac34ccc2bc86c6ba6bca6b33c2dbbfd3c48da42766e4ed065d085dff46e23ed8a77f409faf0b89722684b96f1be745ffe1702cea362a43f74ddf3

    • SSDEEP

      24576:IZUcAxHGyCKIFxUZYuF4yLZAt4v4xM9W5rLg:IZYGyCTFxUZ+yLZAt4v4Cs5

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (61) 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