Overview

overview

10

Static

static

3

2024-03-28...ck.exe

windows7-x64

10

2024-03-28...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-03-28_86703d5fdefb4c37d51ca89db3bd1f93_virlock

  • Size

    853KB

  • Sample

    240328-mt26maaf51

  • MD5

    86703d5fdefb4c37d51ca89db3bd1f93

  • SHA1

    4ee49695a510638c8b7f2d8e02a91b264e5153d9

  • SHA256

    5d173a30c7cb05c2e978b933a355cf3a491c33aff0e29c25211de8b1797f4577

  • SHA512

    6b00618423e7fdde958832ebd3513a3288b2be7fc09dd366e357944f185e805c7bd85336761277b7f80ecfb1572ce015222b3dc672e04e50820254c605067f67

  • SSDEEP

    24576:4G93vqGrvHTw084r4LTmVP1u9kqzw0RRW3EeFmzP:Bc6r4LTe1IkqzwkZ/

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_86703d5fdefb4c37d51ca89db3bd1f93_virlock

    • Size

      853KB

    • MD5

      86703d5fdefb4c37d51ca89db3bd1f93

    • SHA1

      4ee49695a510638c8b7f2d8e02a91b264e5153d9

    • SHA256

      5d173a30c7cb05c2e978b933a355cf3a491c33aff0e29c25211de8b1797f4577

    • SHA512

      6b00618423e7fdde958832ebd3513a3288b2be7fc09dd366e357944f185e805c7bd85336761277b7f80ecfb1572ce015222b3dc672e04e50820254c605067f67

    • SSDEEP

      24576:4G93vqGrvHTw084r4LTmVP1u9kqzw0RRW3EeFmzP:Bc6r4LTe1IkqzwkZ/

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (90) 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.

    • Deletes itself

    • 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