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Overview

overview

10

Static

static

3

2024-05-28...ck.exe

windows7-x64

10

2024-05-28...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-05-28_730f81a158df05a5a8848d7aa177385a_virlock

  • Size

    261KB

  • Sample

    240528-g4tpcahb6t

  • MD5

    730f81a158df05a5a8848d7aa177385a

  • SHA1

    824506c3494072bdafc50548effd5358baab726d

  • SHA256

    03f50d864618096cc19ef8df4b5a186b375c43f35af9d0d057af7e582643df33

  • SHA512

    28c2f1c379681ea98469b7638baf60eca8c8f67137d0cda102ee34d0972ff981925f61dfd40b0099c9c240b9b547f01b8919fed6ebb54172a4670902730abd01

  • SSDEEP

    6144:1T65NEgLW57pgao9kyEyRm7yxvQrRm49dGjmhnxID6Q:tG+gLW57pgaoWySOxkm4DKmhniDZ

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-28_730f81a158df05a5a8848d7aa177385a_virlock

    • Size

      261KB

    • MD5

      730f81a158df05a5a8848d7aa177385a

    • SHA1

      824506c3494072bdafc50548effd5358baab726d

    • SHA256

      03f50d864618096cc19ef8df4b5a186b375c43f35af9d0d057af7e582643df33

    • SHA512

      28c2f1c379681ea98469b7638baf60eca8c8f67137d0cda102ee34d0972ff981925f61dfd40b0099c9c240b9b547f01b8919fed6ebb54172a4670902730abd01

    • SSDEEP

      6144:1T65NEgLW57pgao9kyEyRm7yxvQrRm49dGjmhnxID6Q:tG+gLW57pgaoWySOxkm4DKmhniDZ

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (65) 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 Enterprise v15

Reconnaissance

Resource Development

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

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

4
T1112

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

Command and Control

Exfiltration

Impact

Tasks