Overview

overview

10

Static

static

3

2024-04-26...ck.exe

windows7-x64

10

2024-04-26...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-26_c0bfe18465e8fdc8c80d621e29b37460_virlock

  • Size

    639KB

  • Sample

    240426-rfdy4adh6z

  • MD5

    c0bfe18465e8fdc8c80d621e29b37460

  • SHA1

    72ba35f5817a9699d6335b644bcf9efff2b17cb1

  • SHA256

    8f694941f1f02d72af9cb83a905b629d6ab68a2dc6d05f36ec250b9ad7a449d3

  • SHA512

    a4ebe9ff08a8c9530bd8dc365caf951fa1338c05e57cd180da20b349f79bbea4e9f411bb63df666e97e11c4db8327e7979520705e7e76ef26868aa6cf388f506

  • SSDEEP

    12288:QOjaqoB0RD021/f/0gkxeHKdyCBvNS3WyKeMyShgDHiF:QOjvoBA021/f3kgCdNS3HKe3fCF

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-26_c0bfe18465e8fdc8c80d621e29b37460_virlock

    • Size

      639KB

    • MD5

      c0bfe18465e8fdc8c80d621e29b37460

    • SHA1

      72ba35f5817a9699d6335b644bcf9efff2b17cb1

    • SHA256

      8f694941f1f02d72af9cb83a905b629d6ab68a2dc6d05f36ec250b9ad7a449d3

    • SHA512

      a4ebe9ff08a8c9530bd8dc365caf951fa1338c05e57cd180da20b349f79bbea4e9f411bb63df666e97e11c4db8327e7979520705e7e76ef26868aa6cf388f506

    • SSDEEP

      12288:QOjaqoB0RD021/f/0gkxeHKdyCBvNS3WyKeMyShgDHiF:QOjvoBA021/f3kgCdNS3HKe3fCF

    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.

    • 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