Overview

overview

10

Static

static

3

2024-05-26...ck.exe

windows7-x64

10

2024-05-26...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-26_f42ce0e64a3d2f7354f003349e7cdf8c_virlock

  • Size

    186KB

  • Sample

    240526-ej1wtaeb6v

  • MD5

    f42ce0e64a3d2f7354f003349e7cdf8c

  • SHA1

    4c7ee52a1e9b7aabecf7574975a9d16823a4adbd

  • SHA256

    a2b770179bb3c0ca242e748870a62017e2fbfd4a669a27cae94f7fe3a2357bc3

  • SHA512

    704b352efd4fcaf4eed028b773928f085f2b643cba10ab5e92e999eecd3625b92ad0befd7a71322c949c681f4bfd607d8c8f1e1bd5f0a8701677c290443d0c71

  • SSDEEP

    3072:VanwoG/J9JL1t2TwgplBFi7NRux1/O7cp7yVL36XaurGJO1euGi939jIhl:Wwf/vJL1E3nBFFH/O7cp7qbgaXQ1euGJ

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-26_f42ce0e64a3d2f7354f003349e7cdf8c_virlock

    • Size

      186KB

    • MD5

      f42ce0e64a3d2f7354f003349e7cdf8c

    • SHA1

      4c7ee52a1e9b7aabecf7574975a9d16823a4adbd

    • SHA256

      a2b770179bb3c0ca242e748870a62017e2fbfd4a669a27cae94f7fe3a2357bc3

    • SHA512

      704b352efd4fcaf4eed028b773928f085f2b643cba10ab5e92e999eecd3625b92ad0befd7a71322c949c681f4bfd607d8c8f1e1bd5f0a8701677c290443d0c71

    • SSDEEP

      3072:VanwoG/J9JL1t2TwgplBFi7NRux1/O7cp7yVL36XaurGJO1euGi939jIhl:Wwf/vJL1E3nBFFH/O7cp7qbgaXQ1euGJ

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (53) 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