Overview

overview

10

Static

static

3

2024-04-25...ck.exe

windows7-x64

10

2024-04-25...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-25_bf6466692338ec58a04d7f784a51c7f3_virlock

  • Size

    178KB

  • Sample

    240425-npf82aac47

  • MD5

    bf6466692338ec58a04d7f784a51c7f3

  • SHA1

    3cfc9a0fe927932a41d812b63f23b82f6bdbf468

  • SHA256

    d7ebbc476fbe6fdfe05fcdff21ef918fd36b3614dca5be1ee9bcfb683d8e6920

  • SHA512

    919221d582bfff0354447fb3ee2806f0240ec655793d7a82a36d0ad98896efece53dae3975a1f88e7df80a4a17a3d8a596d348b1c0ee8e149ea9d49174a65db4

  • SSDEEP

    3072:AbyBh9rCniilOip2rfaAAUR9x64s2FV2nItVAGhxmSlssl69XXRw7vgXEN2JFE3S:AGBsQftd6iV2I/AGTm99XXRw7Yg2J+3S

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-25_bf6466692338ec58a04d7f784a51c7f3_virlock

    • Size

      178KB

    • MD5

      bf6466692338ec58a04d7f784a51c7f3

    • SHA1

      3cfc9a0fe927932a41d812b63f23b82f6bdbf468

    • SHA256

      d7ebbc476fbe6fdfe05fcdff21ef918fd36b3614dca5be1ee9bcfb683d8e6920

    • SHA512

      919221d582bfff0354447fb3ee2806f0240ec655793d7a82a36d0ad98896efece53dae3975a1f88e7df80a4a17a3d8a596d348b1c0ee8e149ea9d49174a65db4

    • SSDEEP

      3072:AbyBh9rCniilOip2rfaAAUR9x64s2FV2nItVAGhxmSlssl69XXRw7vgXEN2JFE3S:AGBsQftd6iV2I/AGTm99XXRw7Yg2J+3S

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (86) 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