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_c1f645e5d5007a36b8c6c423e4d01259_virlock

  • Size

    117KB

  • Sample

    240328-dc6caade4w

  • MD5

    c1f645e5d5007a36b8c6c423e4d01259

  • SHA1

    1cba6ecdec82c8c49ddec7854e8b68b4d2e1dcab

  • SHA256

    f8853e8a9bf100fa47663570a37e577a3bdc484b914b6e0aa0ada88afb9f3f49

  • SHA512

    a143d6f0cf8a7caf28df99cf3c3e21756b89366c7c409ea33fffc856594f047080ebae35c1ed90bc96dc30d18c5143a64f31294290235f62917873f7815f7858

  • SSDEEP

    1536:xkCqcntB97n/Qtwx2bdh70h2saabbhGyKXPHPigHnLfjw5M+zuNVVoF:wqF8wx2bdN8MyK/HPigHnuMXoF

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_c1f645e5d5007a36b8c6c423e4d01259_virlock

    • Size

      117KB

    • MD5

      c1f645e5d5007a36b8c6c423e4d01259

    • SHA1

      1cba6ecdec82c8c49ddec7854e8b68b4d2e1dcab

    • SHA256

      f8853e8a9bf100fa47663570a37e577a3bdc484b914b6e0aa0ada88afb9f3f49

    • SHA512

      a143d6f0cf8a7caf28df99cf3c3e21756b89366c7c409ea33fffc856594f047080ebae35c1ed90bc96dc30d18c5143a64f31294290235f62917873f7815f7858

    • SSDEEP

      1536:xkCqcntB97n/Qtwx2bdh70h2saabbhGyKXPHPigHnLfjw5M+zuNVVoF:wqF8wx2bdN8MyK/HPigHnuMXoF

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (80) 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