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_8cbdb148ccde5cb9fe345f6c4406b127_virlock

  • Size

    117KB

  • Sample

    240328-c9eedsdd7w

  • MD5

    8cbdb148ccde5cb9fe345f6c4406b127

  • SHA1

    e9d73ba8940c23c6a7ce356f75394fbe764d6fd5

  • SHA256

    638ffb07a791f3a44811538c1f42fe5796b1f3a9c3b3b353927fae5884607e0c

  • SHA512

    11841d239ae6871492ab03d2e0e1c0614c2a2b45ff976ef2e33afc2133e09ce370e15e9e11b5da2263996fe275732271058dd3c528de8cfa862db24276a5697d

  • SSDEEP

    1536:Zg0x8o/qN/vudTbhrw6u39J/El9zD+IPvGeuk5pd6qx4R1wYV2la3dnzRwXg:i02o/qd21b0Wx+IP1t3Ml2lenSX

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_8cbdb148ccde5cb9fe345f6c4406b127_virlock

    • Size

      117KB

    • MD5

      8cbdb148ccde5cb9fe345f6c4406b127

    • SHA1

      e9d73ba8940c23c6a7ce356f75394fbe764d6fd5

    • SHA256

      638ffb07a791f3a44811538c1f42fe5796b1f3a9c3b3b353927fae5884607e0c

    • SHA512

      11841d239ae6871492ab03d2e0e1c0614c2a2b45ff976ef2e33afc2133e09ce370e15e9e11b5da2263996fe275732271058dd3c528de8cfa862db24276a5697d

    • SSDEEP

      1536:Zg0x8o/qN/vudTbhrw6u39J/El9zD+IPvGeuk5pd6qx4R1wYV2la3dnzRwXg:i02o/qd21b0Wx+IP1t3Ml2lenSX

    Score
    10/10
    evasionpersistencetrojanransomwarespywarestealer

    • 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