Overview

overview

10

Static

static

3

2024-04-28...ck.exe

windows7-x64

10

2024-04-28...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-28_a3baf34db6ffeab11fe09fe8d3df9423_virlock

  • Size

    137KB

  • Sample

    240428-pyzx6sga78

  • MD5

    a3baf34db6ffeab11fe09fe8d3df9423

  • SHA1

    19febb0dde35c0d1c56dca0c521d142142171ab3

  • SHA256

    8e434755c68387ae40d310d2e61d95aeaa59bb43a474d6a8f5a7cf6c67029c0a

  • SHA512

    c6316d3898cc203d97164c3cc774273ebf6f524724c2ba879f58b1ee657b8e97d7cf7d4d2efa51a0e53d98624dc9ec2118a18f4fae9b1457b3882fb7a94a516c

  • SSDEEP

    3072:oB+D9+orrZ0CmXe+2UJ0dpSf6urPFZuLWVGDWJco1+lZ0LX:LNrrrue+gkD6FiI7I

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-28_a3baf34db6ffeab11fe09fe8d3df9423_virlock

    • Size

      137KB

    • MD5

      a3baf34db6ffeab11fe09fe8d3df9423

    • SHA1

      19febb0dde35c0d1c56dca0c521d142142171ab3

    • SHA256

      8e434755c68387ae40d310d2e61d95aeaa59bb43a474d6a8f5a7cf6c67029c0a

    • SHA512

      c6316d3898cc203d97164c3cc774273ebf6f524724c2ba879f58b1ee657b8e97d7cf7d4d2efa51a0e53d98624dc9ec2118a18f4fae9b1457b3882fb7a94a516c

    • SSDEEP

      3072:oB+D9+orrZ0CmXe+2UJ0dpSf6urPFZuLWVGDWJco1+lZ0LX:LNrrrue+gkD6FiI7I

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (79) 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