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_c2e10a77541804105788d77d9dff4e43_virlock

  • Size

    633KB

  • Sample

    240523-a6dbtafe53

  • MD5

    c2e10a77541804105788d77d9dff4e43

  • SHA1

    07c52a79ec8e722a45f86fd3f95b6447bc5e2f44

  • SHA256

    a5137b4e51a11291a3a621cf6b057ca19413c2ee64cec502a845875e43aa289f

  • SHA512

    91e73be6dac387698e82dac6e3656debc620f7e92a492c9f522e59cd1e214bb27154c97ff941f06a974b5cfd41572f2d46e0401dbf2af8f92574fa93ac2dab37

  • SSDEEP

    12288:psFQUl62sFrwtFX7QHhtcpmUVlJmiMl12l3CgoPq/bO:psFQUl6IQ3CVXVMlo1D

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-23_c2e10a77541804105788d77d9dff4e43_virlock

    • Size

      633KB

    • MD5

      c2e10a77541804105788d77d9dff4e43

    • SHA1

      07c52a79ec8e722a45f86fd3f95b6447bc5e2f44

    • SHA256

      a5137b4e51a11291a3a621cf6b057ca19413c2ee64cec502a845875e43aa289f

    • SHA512

      91e73be6dac387698e82dac6e3656debc620f7e92a492c9f522e59cd1e214bb27154c97ff941f06a974b5cfd41572f2d46e0401dbf2af8f92574fa93ac2dab37

    • SSDEEP

      12288:psFQUl62sFrwtFX7QHhtcpmUVlJmiMl12l3CgoPq/bO:psFQUl6IQ3CVXVMlo1D

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (61) 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