Overview

overview

10

Static

static

3

2024-02-19...ck.exe

windows7-x64

10

2024-02-19...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-02-19_bd7af9ee4a321430c081293bf23511a6_virlock

  • Size

    2.0MB

  • Sample

    240219-vbmxzshb57

  • MD5

    bd7af9ee4a321430c081293bf23511a6

  • SHA1

    75d8c44b6b614225a100c4b068206bd030fd505d

  • SHA256

    4b43f8d9da366bd3021f417c6227d7272cd354f7039218eeee6507573ba1477e

  • SHA512

    15fea8a8160eb7d5b5edf82c73b1f733b55464a83ee8cf22a82d781a0f96fba41a4ab04ee0e50d0607e9d514cd60c71c1ce74859789814f53e2dadc7465303fd

  • SSDEEP

    24576:wEjNV509U3uABOiDfRePDE8vlxk7Tnhm7svkf0dJP97SySpTufYvzWmVZpYdb:jubEOiDf0LE8dgE7sMMPIpTufczY

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-02-19_bd7af9ee4a321430c081293bf23511a6_virlock

    • Size

      2.0MB

    • MD5

      bd7af9ee4a321430c081293bf23511a6

    • SHA1

      75d8c44b6b614225a100c4b068206bd030fd505d

    • SHA256

      4b43f8d9da366bd3021f417c6227d7272cd354f7039218eeee6507573ba1477e

    • SHA512

      15fea8a8160eb7d5b5edf82c73b1f733b55464a83ee8cf22a82d781a0f96fba41a4ab04ee0e50d0607e9d514cd60c71c1ce74859789814f53e2dadc7465303fd

    • SSDEEP

      24576:wEjNV509U3uABOiDfRePDE8vlxk7Tnhm7svkf0dJP97SySpTufYvzWmVZpYdb:jubEOiDf0LE8dgE7sMMPIpTufczY

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies WinLogon for persistence

      persistence

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (54) 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 Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

5
T1112

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

Command and Control

Exfiltration

Impact

Tasks