Overview

overview

10

Static

static

3

2024-05-25...ck.exe

windows7-x64

10

2024-05-25...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-25_36bb2cbeefcf633d82aa0867d9aef5f6_virlock

  • Size

    660KB

  • Sample

    240525-twzxlsad8t

  • MD5

    36bb2cbeefcf633d82aa0867d9aef5f6

  • SHA1

    35d6330123ae492c4696b65d5bdbf1b70dbc68fa

  • SHA256

    012b65a8402c3fdd88cf1b67af4e4152d09962c805582edbdd970ddb5c6bda24

  • SHA512

    28cc64594b1ff5b5c08b643b18d75fa47027c71dd0479589f19eb9044f85785fa17cfca6d6169823f6d4c5584576781e3d718b2e621a6122a4b4f353b0548e5c

  • SSDEEP

    12288:Sx6EEMehpA9RWPKqs3MS3n/0w/t9abhjLT7w6oPqYfrOlpJMaNQnathQkAK7AHKm:SXehpAAS3nM2EhjLTMJPqYxK7AHR1H

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-25_36bb2cbeefcf633d82aa0867d9aef5f6_virlock

    • Size

      660KB

    • MD5

      36bb2cbeefcf633d82aa0867d9aef5f6

    • SHA1

      35d6330123ae492c4696b65d5bdbf1b70dbc68fa

    • SHA256

      012b65a8402c3fdd88cf1b67af4e4152d09962c805582edbdd970ddb5c6bda24

    • SHA512

      28cc64594b1ff5b5c08b643b18d75fa47027c71dd0479589f19eb9044f85785fa17cfca6d6169823f6d4c5584576781e3d718b2e621a6122a4b4f353b0548e5c

    • SSDEEP

      12288:Sx6EEMehpA9RWPKqs3MS3n/0w/t9abhjLT7w6oPqYfrOlpJMaNQnathQkAK7AHKm:SXehpAAS3nM2EhjLTMJPqYxK7AHR1H

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (78) 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