Overview

overview

10

Static

static

3

2024-05-21...ck.exe

windows7-x64

10

2024-05-21...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-21_31f54ab442a17547d536407775ab6476_virlock

  • Size

    110KB

  • Sample

    240521-gfzwfsee83

  • MD5

    31f54ab442a17547d536407775ab6476

  • SHA1

    45e632a92c2e3d29c3e2e52117d3fe3ca1fa49d4

  • SHA256

    c5fc85dedcd8824bdd7fad4bc7886caef97d22a31693652340d0540d762610b8

  • SHA512

    a16c8aa9b859c930712b4e22c3094158a55d54d8e76fdb01b1b08792fd4aadcae248a6385d0dbab888698a4d9a3110c3c8199bf3d8e86c0ef35cd53cd10a7aa5

  • SSDEEP

    3072:2KBT790NDjn5bLZV0t8IZWRLbtXKyuzNx:2KBGDj5bLZuWVuR

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-21_31f54ab442a17547d536407775ab6476_virlock

    • Size

      110KB

    • MD5

      31f54ab442a17547d536407775ab6476

    • SHA1

      45e632a92c2e3d29c3e2e52117d3fe3ca1fa49d4

    • SHA256

      c5fc85dedcd8824bdd7fad4bc7886caef97d22a31693652340d0540d762610b8

    • SHA512

      a16c8aa9b859c930712b4e22c3094158a55d54d8e76fdb01b1b08792fd4aadcae248a6385d0dbab888698a4d9a3110c3c8199bf3d8e86c0ef35cd53cd10a7aa5

    • SSDEEP

      3072:2KBT790NDjn5bLZV0t8IZWRLbtXKyuzNx:2KBGDj5bLZuWVuR

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (77) 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 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