Overview

overview

10

Static

static

3

2024-05-23...ck.exe

windows7-x64

10

2024-05-23...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-23_89525bfe8ee83b64d41da9141eabd1e6_virlock

  • Size

    241KB

  • Sample

    240523-jtehsaaa94

  • MD5

    89525bfe8ee83b64d41da9141eabd1e6

  • SHA1

    06500b9cb30daa2556b6ab308a39e8ad0e3cd30e

  • SHA256

    81a00f50d9e2a4b198e263b0bab58dd4fe0a343d9d58c30aba3f06fa46032006

  • SHA512

    9ef54cb23f1d5f68dacb2f71214f113c186cd4a63e8ca5c5054e54f90eba2b4a4af58791e04fa4ac5b30bdaddfb55f766f400f7a759e0b50d3fbd7ff340a7188

  • SSDEEP

    6144:5MnUnaZAFZhBrYX9ClacHcP6bTWnbbFjSJ:CnUn6AZyt2ac7ql2J

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-23_89525bfe8ee83b64d41da9141eabd1e6_virlock

    • Size

      241KB

    • MD5

      89525bfe8ee83b64d41da9141eabd1e6

    • SHA1

      06500b9cb30daa2556b6ab308a39e8ad0e3cd30e

    • SHA256

      81a00f50d9e2a4b198e263b0bab58dd4fe0a343d9d58c30aba3f06fa46032006

    • SHA512

      9ef54cb23f1d5f68dacb2f71214f113c186cd4a63e8ca5c5054e54f90eba2b4a4af58791e04fa4ac5b30bdaddfb55f766f400f7a759e0b50d3fbd7ff340a7188

    • SSDEEP

      6144:5MnUnaZAFZhBrYX9ClacHcP6bTWnbbFjSJ:CnUn6AZyt2ac7ql2J

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (87) 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