Overview

overview

10

Static

static

3

2024-04-18...ck.exe

windows7-x64

10

2024-04-18...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-04-18_401dbbf4b8f35ef9f4b5fdc9ffc5ffe0_virlock

  • Size

    165KB

  • Sample

    240418-2at38she3z

  • MD5

    401dbbf4b8f35ef9f4b5fdc9ffc5ffe0

  • SHA1

    0a777fe216b7e5489e1955274510465b1a2a911a

  • SHA256

    bad6a5b82befc8bb82bf7010221f9a1f047dff4c44c46113f6a7cb4fd969b094

  • SHA512

    40a663debb5642b38fc7b2a6ef560842c455410441bbe9f02dd8ca38b28604fbb41cdb15252bd7194c4e598df85d37a135c7dae4c315f6c71767c84fb9190e9c

  • SSDEEP

    3072:jRDc4/N092Bi8NhWIBCoO4gN5qq4eN7d/wXfa/FI1ey0j1C:NDTbBi8NsIBCoOhblN7dJivL

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-18_401dbbf4b8f35ef9f4b5fdc9ffc5ffe0_virlock

    • Size

      165KB

    • MD5

      401dbbf4b8f35ef9f4b5fdc9ffc5ffe0

    • SHA1

      0a777fe216b7e5489e1955274510465b1a2a911a

    • SHA256

      bad6a5b82befc8bb82bf7010221f9a1f047dff4c44c46113f6a7cb4fd969b094

    • SHA512

      40a663debb5642b38fc7b2a6ef560842c455410441bbe9f02dd8ca38b28604fbb41cdb15252bd7194c4e598df85d37a135c7dae4c315f6c71767c84fb9190e9c

    • SSDEEP

      3072:jRDc4/N092Bi8NhWIBCoO4gN5qq4eN7d/wXfa/FI1ey0j1C:NDTbBi8NsIBCoOhblN7dJivL

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (82) 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