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_a5de75737f2065ba89e52d6a4f212849_virlock

  • Size

    139KB

  • Sample

    240328-mg69tagb83

  • MD5

    a5de75737f2065ba89e52d6a4f212849

  • SHA1

    15de29e6add023dd73e6a3f9ab47a42226b5dce0

  • SHA256

    b316557b774727d8e9d19ad73296b8bac507219fbe72cd0b4814ebb03a73d906

  • SHA512

    4c1a7ebbae31c38a2f60312e603ae3ddd71a5cafaf302798545ac76c81f66a071f744d619034c86551b3c4bf14448ea74f62390b919b5a7bc9fd4dba608a11b0

  • SSDEEP

    3072:DctauBgTIHIwMo0Nlt0/nPGj19aDLcRutzx1wIAjbjd+YmnyFzZAzqLX:6eTPwMoulW2jaDLQutt1wIsNZiw

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_a5de75737f2065ba89e52d6a4f212849_virlock

    • Size

      139KB

    • MD5

      a5de75737f2065ba89e52d6a4f212849

    • SHA1

      15de29e6add023dd73e6a3f9ab47a42226b5dce0

    • SHA256

      b316557b774727d8e9d19ad73296b8bac507219fbe72cd0b4814ebb03a73d906

    • SHA512

      4c1a7ebbae31c38a2f60312e603ae3ddd71a5cafaf302798545ac76c81f66a071f744d619034c86551b3c4bf14448ea74f62390b919b5a7bc9fd4dba608a11b0

    • SSDEEP

      3072:DctauBgTIHIwMo0Nlt0/nPGj19aDLcRutzx1wIAjbjd+YmnyFzZAzqLX:6eTPwMoulW2jaDLQutt1wIsNZiw

    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.

    • 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