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_22d16bf44f4e3b4b6d08c7e4bf47fb1f_virlock

  • Size

    225KB

  • Sample

    240328-czay8aah49

  • MD5

    22d16bf44f4e3b4b6d08c7e4bf47fb1f

  • SHA1

    aa687c756bed231814fa2864b28fe22f2e2fa917

  • SHA256

    432735a2d021e4fb5cf9dc627c1e109a0b54ded2e836e4bd74a472388431e31c

  • SHA512

    419870ad988396ea2299591a952d1fb2f75f1473e2e616c033d3e3c791e9174701f6279a0b6e3520b19e665005d3f866681119103abe972bae3c412e1d5b5560

  • SSDEEP

    6144:N3mdlWax3u6WnymZkYQklDxCLTB8gTuQIfOR:NWdZRWNZkYvOBvTVR

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_22d16bf44f4e3b4b6d08c7e4bf47fb1f_virlock

    • Size

      225KB

    • MD5

      22d16bf44f4e3b4b6d08c7e4bf47fb1f

    • SHA1

      aa687c756bed231814fa2864b28fe22f2e2fa917

    • SHA256

      432735a2d021e4fb5cf9dc627c1e109a0b54ded2e836e4bd74a472388431e31c

    • SHA512

      419870ad988396ea2299591a952d1fb2f75f1473e2e616c033d3e3c791e9174701f6279a0b6e3520b19e665005d3f866681119103abe972bae3c412e1d5b5560

    • SSDEEP

      6144:N3mdlWax3u6WnymZkYQklDxCLTB8gTuQIfOR:NWdZRWNZkYvOBvTVR

    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