Overview

overview

10

Static

static

3

2024-03-28...ck.exe

windows7-x64

10

2024-03-28...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-03-28_075a7b2ad4f8f6c5b36377ee28d16f89_virlock

  • Size

    112KB

  • Sample

    240328-mshqlagd69

  • MD5

    075a7b2ad4f8f6c5b36377ee28d16f89

  • SHA1

    29461828281a1f48162d56595a6d2ebfda128634

  • SHA256

    3523a6cd753c68872b2eb2beb45f67fb79d2e0f5bcbbe6b5dc78eb7aef82379a

  • SHA512

    a74d5f6478325398e482169d9962abc71a6b73ba62d6ad9a525932b9047070228e6ac4eee6a48bb77b409fcf306c528b701f5240beabf3253ff4dc5bfaddde96

  • SSDEEP

    3072:R5OIQ43v1T6YhTdKWJlBJHIolzPresrIJU:6IQ4/1T6YhZKEl7rlz/rO

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_075a7b2ad4f8f6c5b36377ee28d16f89_virlock

    • Size

      112KB

    • MD5

      075a7b2ad4f8f6c5b36377ee28d16f89

    • SHA1

      29461828281a1f48162d56595a6d2ebfda128634

    • SHA256

      3523a6cd753c68872b2eb2beb45f67fb79d2e0f5bcbbe6b5dc78eb7aef82379a

    • SHA512

      a74d5f6478325398e482169d9962abc71a6b73ba62d6ad9a525932b9047070228e6ac4eee6a48bb77b409fcf306c528b701f5240beabf3253ff4dc5bfaddde96

    • SSDEEP

      3072:R5OIQ43v1T6YhTdKWJlBJHIolzPresrIJU:6IQ4/1T6YhZKEl7rlz/rO

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (82) 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