Overview

overview

10

Static

static

3

2024-04-28...ck.exe

windows7-x64

10

2024-04-28...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-28_977ae1307826d3b8488e8394f7c8577d_virlock

  • Size

    254KB

  • Sample

    240428-px7xdsgd7y

  • MD5

    977ae1307826d3b8488e8394f7c8577d

  • SHA1

    21e49e45e586ec5c32e798bf3c52756589cb837c

  • SHA256

    5e3a925314c5b0e57b87a2bd0575620e598aa42f38ebc75c60c902bd73656d83

  • SHA512

    5c83608b77b25175b5a8a2e85a100b9f023324fc5347031c2d7f2910d90746e81a9a76604616c3af25d65a257cc26614a218ea97946df516642d9d5e6c5aa914

  • SSDEEP

    6144:xOtGUgi04AePrGmlQI5HqDybYu9Klb4eSZ8Q7SX4ym:xOwzivJPrGqHT9xdSX4ym

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-28_977ae1307826d3b8488e8394f7c8577d_virlock

    • Size

      254KB

    • MD5

      977ae1307826d3b8488e8394f7c8577d

    • SHA1

      21e49e45e586ec5c32e798bf3c52756589cb837c

    • SHA256

      5e3a925314c5b0e57b87a2bd0575620e598aa42f38ebc75c60c902bd73656d83

    • SHA512

      5c83608b77b25175b5a8a2e85a100b9f023324fc5347031c2d7f2910d90746e81a9a76604616c3af25d65a257cc26614a218ea97946df516642d9d5e6c5aa914

    • SSDEEP

      6144:xOtGUgi04AePrGmlQI5HqDybYu9Klb4eSZ8Q7SX4ym:xOwzivJPrGqHT9xdSX4ym

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (80) 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