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_4358e2b7961cbdb46078bd80250812d0_virlock

  • Size

    447KB

  • Sample

    240328-ms1amsaf3z

  • MD5

    4358e2b7961cbdb46078bd80250812d0

  • SHA1

    e32c9a7f06076bb0bbf4395253ad53273099369b

  • SHA256

    55f63f25d82caffd41a515b2732ed705114b432006c890edc8d3a8b60b7c80dd

  • SHA512

    98f331a31ee10b4f997ea18a8ee959483eab5970743193579fd42320af6f8e4ec3a760e88a1f609b88709790881c6c612e2bf5b33b96de0faee78bc7ea02ae97

  • SSDEEP

    12288:VJc5gSPbar4aryGrZOCU0pKrP02YAyPQY:DNUbwLUCmdu

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_4358e2b7961cbdb46078bd80250812d0_virlock

    • Size

      447KB

    • MD5

      4358e2b7961cbdb46078bd80250812d0

    • SHA1

      e32c9a7f06076bb0bbf4395253ad53273099369b

    • SHA256

      55f63f25d82caffd41a515b2732ed705114b432006c890edc8d3a8b60b7c80dd

    • SHA512

      98f331a31ee10b4f997ea18a8ee959483eab5970743193579fd42320af6f8e4ec3a760e88a1f609b88709790881c6c612e2bf5b33b96de0faee78bc7ea02ae97

    • SSDEEP

      12288:VJc5gSPbar4aryGrZOCU0pKrP02YAyPQY:DNUbwLUCmdu

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (81) 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