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_aad54c4e14f7987b80020ee8b195ea37_virlock

  • Size

    254KB

  • Sample

    240328-mhabgaad5s

  • MD5

    aad54c4e14f7987b80020ee8b195ea37

  • SHA1

    cc98b9d376dbd2502bfef21e97a05ac4f9c270a0

  • SHA256

    1b485227818a606f6b8304a10ffcae7286908f89a9f5d5316ba3b6d1b62f9fa7

  • SHA512

    e25d491f43d5f03ff541919e657494e0c57aafb1de3a065c8befc01d7e54c62d7c8d26c8a18dfdc087e290eeb30559f058a062a6dcbe57341ac9ede2cd718dd9

  • SSDEEP

    3072:8rpkM3tUXx4FqZhOwc4MiKh7qCYM5oNXjmOjnkgfqxcM69f6x:8tTSXqQZhLMiKh7DY0ocOjnVfqxcMKy

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_aad54c4e14f7987b80020ee8b195ea37_virlock

    • Size

      254KB

    • MD5

      aad54c4e14f7987b80020ee8b195ea37

    • SHA1

      cc98b9d376dbd2502bfef21e97a05ac4f9c270a0

    • SHA256

      1b485227818a606f6b8304a10ffcae7286908f89a9f5d5316ba3b6d1b62f9fa7

    • SHA512

      e25d491f43d5f03ff541919e657494e0c57aafb1de3a065c8befc01d7e54c62d7c8d26c8a18dfdc087e290eeb30559f058a062a6dcbe57341ac9ede2cd718dd9

    • SSDEEP

      3072:8rpkM3tUXx4FqZhOwc4MiKh7qCYM5oNXjmOjnkgfqxcM69f6x:8tTSXqQZhLMiKh7DY0ocOjnVfqxcMKy

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (85) 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