Overview

overview

10

Static

static

3

2024-05-25...ck.exe

windows7-x64

10

2024-05-25...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-25_37ab5c2f946961041bdcb47e5250f5b1_virlock

  • Size

    230KB

  • Sample

    240525-nmlezaeg4x

  • MD5

    37ab5c2f946961041bdcb47e5250f5b1

  • SHA1

    885943dcc66d61113ece8dc0acd0abcb4145d97e

  • SHA256

    ea7fa0bc70c75c1528ec1c51a52872ab5fd55b34b2e95003c96bcc089c70998d

  • SHA512

    614e33efd4a2265223613732ad8ad04cde0b5d4b22ebb3fc2400ec7b884931496865305a0b825b3d725127b3b2f1c8461e076e385c117a8881cca734c4b2601b

  • SSDEEP

    6144:g4XWtbS6ypV3axXT3c5TsESgQ96k1AOcW:JXQbSX367eJBkeNW

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-25_37ab5c2f946961041bdcb47e5250f5b1_virlock

    • Size

      230KB

    • MD5

      37ab5c2f946961041bdcb47e5250f5b1

    • SHA1

      885943dcc66d61113ece8dc0acd0abcb4145d97e

    • SHA256

      ea7fa0bc70c75c1528ec1c51a52872ab5fd55b34b2e95003c96bcc089c70998d

    • SHA512

      614e33efd4a2265223613732ad8ad04cde0b5d4b22ebb3fc2400ec7b884931496865305a0b825b3d725127b3b2f1c8461e076e385c117a8881cca734c4b2601b

    • SSDEEP

      6144:g4XWtbS6ypV3axXT3c5TsESgQ96k1AOcW:JXQbSX367eJBkeNW

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (63) 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 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