Overview

overview

10

Static

static

3

2024-05-27...ck.exe

windows7-x64

10

2024-05-27...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-27_0a07368905d338695e73662f0bf53255_virlock

  • Size

    650KB

  • Sample

    240527-e1hfssha57

  • MD5

    0a07368905d338695e73662f0bf53255

  • SHA1

    078a019e8ba24804fa9931011dda4d654a870c5f

  • SHA256

    6795e28fc94ede23c3f01090476a166bb46d5eaab2e059c0fac7ec0e5267f192

  • SHA512

    66274814624b0c75e3319a334a3960b5e81b684c94d3bbff46d2c194711a83043a2bd0119ef708d2eb042ccfa836f11340c6c3347b991d88edf025d0a31b1125

  • SSDEEP

    12288:JBwJ1ks0g15lEYkvjlRO33a/6NHtddM1biOiGTDPpvab8kOobypYg:Ji1ks0gdfkvjlo33uWtdd3OiPW

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-27_0a07368905d338695e73662f0bf53255_virlock

    • Size

      650KB

    • MD5

      0a07368905d338695e73662f0bf53255

    • SHA1

      078a019e8ba24804fa9931011dda4d654a870c5f

    • SHA256

      6795e28fc94ede23c3f01090476a166bb46d5eaab2e059c0fac7ec0e5267f192

    • SHA512

      66274814624b0c75e3319a334a3960b5e81b684c94d3bbff46d2c194711a83043a2bd0119ef708d2eb042ccfa836f11340c6c3347b991d88edf025d0a31b1125

    • SSDEEP

      12288:JBwJ1ks0g15lEYkvjlRO33a/6NHtddM1biOiGTDPpvab8kOobypYg:Ji1ks0gdfkvjlo33uWtdd3OiPW

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (57) 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