Overview

overview

10

Static

static

3

2024-04-28...ck.exe

windows7-x64

10

2024-04-28...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-28_3832a9312f40f63d5b52663217fd5e4a_virlock

  • Size

    566KB

  • Sample

    240428-3cmbvabg36

  • MD5

    3832a9312f40f63d5b52663217fd5e4a

  • SHA1

    0526e4ae34e70bb8ead78a4f116f2de8f71e31f9

  • SHA256

    8668c833c39cc61d2e79fb9221d5a30d07b932ba9f408985607d80f694811ed1

  • SHA512

    c75382538b91c7d57ef4a019f4a9fed6a0100ba5b82b9a0bb7ddbaf1fb548cf4c9a8fda0334c1f5e843ce694be5f9d998e05d20a793e2c9df68aa49e47acbdf0

  • SSDEEP

    12288:R58tiOZnj7lp+9rcGmufX2KxLreClOMit3mCkE7T:v9OhlpurcG4KxLrefmCkE7T

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-28_3832a9312f40f63d5b52663217fd5e4a_virlock

    • Size

      566KB

    • MD5

      3832a9312f40f63d5b52663217fd5e4a

    • SHA1

      0526e4ae34e70bb8ead78a4f116f2de8f71e31f9

    • SHA256

      8668c833c39cc61d2e79fb9221d5a30d07b932ba9f408985607d80f694811ed1

    • SHA512

      c75382538b91c7d57ef4a019f4a9fed6a0100ba5b82b9a0bb7ddbaf1fb548cf4c9a8fda0334c1f5e843ce694be5f9d998e05d20a793e2c9df68aa49e47acbdf0

    • SSDEEP

      12288:R58tiOZnj7lp+9rcGmufX2KxLreClOMit3mCkE7T:v9OhlpurcG4KxLrefmCkE7T

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (83) 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 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