Overview

overview

10

Static

static

3

2024-05-24...ck.exe

windows7-x64

10

2024-05-24...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-24_84db41ae48ddfd09c7a3a95bd3c79480_virlock

  • Size

    305KB

  • Sample

    240524-rbz1rsgf53

  • MD5

    84db41ae48ddfd09c7a3a95bd3c79480

  • SHA1

    5357c8d133b030deb16eaa1e66a5e95a9077bb01

  • SHA256

    49b8c899e0ff46e26f225a1406968092440984680f39e08c5f1c3c407f93c6d0

  • SHA512

    57bedffa8d8435dd739a311508f43281fd8e941f7074447b0670324871c24e4a3b5fb0effb749c42d642231dcac49fb66858b878c114044d3847b0d0bf9b84d7

  • SSDEEP

    6144:SKAV5z0361/EFJlw2Cp6/LxvHJSnwXls5JdVgpuWJm5w:XAVRx1/EPlj/LxfUnwXliJdVgpudy

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-24_84db41ae48ddfd09c7a3a95bd3c79480_virlock

    • Size

      305KB

    • MD5

      84db41ae48ddfd09c7a3a95bd3c79480

    • SHA1

      5357c8d133b030deb16eaa1e66a5e95a9077bb01

    • SHA256

      49b8c899e0ff46e26f225a1406968092440984680f39e08c5f1c3c407f93c6d0

    • SHA512

      57bedffa8d8435dd739a311508f43281fd8e941f7074447b0670324871c24e4a3b5fb0effb749c42d642231dcac49fb66858b878c114044d3847b0d0bf9b84d7

    • SSDEEP

      6144:SKAV5z0361/EFJlw2Cp6/LxvHJSnwXls5JdVgpuWJm5w:XAVRx1/EPlj/LxfUnwXliJdVgpudy

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (59) 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