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_3cec65c839facd306f6580cd7d6d1766_virlock

  • Size

    110KB

  • Sample

    240328-mswmfsgd75

  • MD5

    3cec65c839facd306f6580cd7d6d1766

  • SHA1

    540da336459938a2a348870655a7095ad2c77ae6

  • SHA256

    90bc5aa4c52ed854ed94fb435b100d72f211543517102ea9020158bb5e02074d

  • SHA512

    926fac2d6ac08b797f7282f9e1d9bd5695b0915d648521d13d30c51a59d8e80b124ef43725c4a91161b019294f0ba1b5f22e0a4af83e3f143d3d1970d64cb6f4

  • SSDEEP

    3072:Q7wVP8lu4ixBTIHTQ+w3GlcEollp0ez4HmbIssi40Tj:35e94+zk2rotyH0sirTj

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_3cec65c839facd306f6580cd7d6d1766_virlock

    • Size

      110KB

    • MD5

      3cec65c839facd306f6580cd7d6d1766

    • SHA1

      540da336459938a2a348870655a7095ad2c77ae6

    • SHA256

      90bc5aa4c52ed854ed94fb435b100d72f211543517102ea9020158bb5e02074d

    • SHA512

      926fac2d6ac08b797f7282f9e1d9bd5695b0915d648521d13d30c51a59d8e80b124ef43725c4a91161b019294f0ba1b5f22e0a4af83e3f143d3d1970d64cb6f4

    • SSDEEP

      3072:Q7wVP8lu4ixBTIHTQ+w3GlcEollp0ez4HmbIssi40Tj:35e94+zk2rotyH0sirTj

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • 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