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_ac4fac22fe66120a6050166572534388_virlock

  • Size

    255KB

  • Sample

    240428-ctys4aee4s

  • MD5

    ac4fac22fe66120a6050166572534388

  • SHA1

    05f0444e6eea5be4b6053ddc5f8f552076e95ec5

  • SHA256

    5f7ebfe5fb69240485b9455cacacfd926526f9567ea34ae82b8e0bf4c5b7c8e9

  • SHA512

    42363d5956a81b0a8d1931260f467d242c7988d6b8fca032cce35b0d9f248bdac6b0d1e1e03f7dc682117a1c270a063f5f9e4e3e23a1af1dfca1a956462c3020

  • SSDEEP

    3072:i5+QQ5nwX7J4FL6qhxddchtnvqQxp9P1P/MqZe81Vm6XfZzsln4mC2J1d:irQ2X7Rht15Z04RzW4m9J1d

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-28_ac4fac22fe66120a6050166572534388_virlock

    • Size

      255KB

    • MD5

      ac4fac22fe66120a6050166572534388

    • SHA1

      05f0444e6eea5be4b6053ddc5f8f552076e95ec5

    • SHA256

      5f7ebfe5fb69240485b9455cacacfd926526f9567ea34ae82b8e0bf4c5b7c8e9

    • SHA512

      42363d5956a81b0a8d1931260f467d242c7988d6b8fca032cce35b0d9f248bdac6b0d1e1e03f7dc682117a1c270a063f5f9e4e3e23a1af1dfca1a956462c3020

    • SSDEEP

      3072:i5+QQ5nwX7J4FL6qhxddchtnvqQxp9P1P/MqZe81Vm6XfZzsln4mC2J1d:irQ2X7Rht15Z04RzW4m9J1d

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (84) 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