Overview

overview

10

Static

static

3

2024-04-05...ck.exe

windows7-x64

10

2024-04-05...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-05_20bf0989426d8a0f0df4cbca54b53297_virlock

  • Size

    200KB

  • Sample

    240405-f5xlysde79

  • MD5

    20bf0989426d8a0f0df4cbca54b53297

  • SHA1

    d30f0a75f60bc00e0e94a448eef2c7e79375e556

  • SHA256

    89b114014c15952f13f279eb0d6ba648af05d79eda2075b006f0c48243c3acd9

  • SHA512

    03b69086a4d2d0046bad5cbbb0a2dbcfe00e73e3ac4bc31314eb946e870b52960c954c83c9807e1be4a88a5491858506f2c565d7ce1b487e8c14203888b51e88

  • SSDEEP

    6144:6oqfcFDxwrMXx43ZCnj3OUyhjPpo8BjxvsAIS:5qfcFFwrlpCnj3OUyhjPWkjxvsXS

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-05_20bf0989426d8a0f0df4cbca54b53297_virlock

    • Size

      200KB

    • MD5

      20bf0989426d8a0f0df4cbca54b53297

    • SHA1

      d30f0a75f60bc00e0e94a448eef2c7e79375e556

    • SHA256

      89b114014c15952f13f279eb0d6ba648af05d79eda2075b006f0c48243c3acd9

    • SHA512

      03b69086a4d2d0046bad5cbbb0a2dbcfe00e73e3ac4bc31314eb946e870b52960c954c83c9807e1be4a88a5491858506f2c565d7ce1b487e8c14203888b51e88

    • SSDEEP

      6144:6oqfcFDxwrMXx43ZCnj3OUyhjPpo8BjxvsAIS:5qfcFFwrlpCnj3OUyhjPWkjxvsXS

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (77) 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 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