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_d63a55b2817c1b5791cef6435fe5bb93_virlock

  • Size

    117KB

  • Sample

    240328-dgckrsde7y

  • MD5

    d63a55b2817c1b5791cef6435fe5bb93

  • SHA1

    51d8b8436c46abc9b96a088b125766d29f578a0c

  • SHA256

    0b3f712bc54331639bf7cbafd7cfbb3034da1ad89c0fb915a7457d1728fddf25

  • SHA512

    f6debb26f7c5d8a687d58cac6ac10dc18f09d10e5663f77554e4dc6df386a82bb1336bfc2063e5ad0205a21a107225d1b54de14b0b8b928d32236f7370591272

  • SSDEEP

    3072:mVNoiMPSYR3X5kWPVvY0I/61iKn6jZr2JHL:mVPMPp57dUC1iGEk

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_d63a55b2817c1b5791cef6435fe5bb93_virlock

    • Size

      117KB

    • MD5

      d63a55b2817c1b5791cef6435fe5bb93

    • SHA1

      51d8b8436c46abc9b96a088b125766d29f578a0c

    • SHA256

      0b3f712bc54331639bf7cbafd7cfbb3034da1ad89c0fb915a7457d1728fddf25

    • SHA512

      f6debb26f7c5d8a687d58cac6ac10dc18f09d10e5663f77554e4dc6df386a82bb1336bfc2063e5ad0205a21a107225d1b54de14b0b8b928d32236f7370591272

    • SSDEEP

      3072:mVNoiMPSYR3X5kWPVvY0I/61iKn6jZr2JHL:mVPMPp57dUC1iGEk

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (86) 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