Overview

overview

10

Static

static

3

ViraLock.exe

windows7-x64

10

ViraLock.exe

windows10-1703-x64

10

ViraLock.exe

windows10-2004-x64

10

ViraLock.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    ViraLock.bin

  • Size

    194KB

  • Sample

    240127-143rssfbar

  • MD5

    8803d517ac24b157431d8a462302b400

  • SHA1

    b56afcad22e8cda4d0e2a98808b8e8c5a1059d4e

  • SHA256

    418395efd269bc6534e02c92cb2c568631ada6e54bc55ade4e4a5986605ff786

  • SHA512

    38fdfe0bc873e546b05a8680335526eec61ccc8cf3f37c60eee0bc83ec54570077f1dc1da26142488930eabcc21cb7a33c1b545a194cbfb4c87e430c4b2bfb50

  • SSDEEP

    3072:slkfrcHVaq65Oe/ALwm19MYDzMLGquSOt+nSmgevSvoWAnvN0bfINcfln8rvK:Wkfrc0q47/UwQFSFnH9SArvakSflnCS

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      ViraLock.bin

    • Size

      194KB

    • MD5

      8803d517ac24b157431d8a462302b400

    • SHA1

      b56afcad22e8cda4d0e2a98808b8e8c5a1059d4e

    • SHA256

      418395efd269bc6534e02c92cb2c568631ada6e54bc55ade4e4a5986605ff786

    • SHA512

      38fdfe0bc873e546b05a8680335526eec61ccc8cf3f37c60eee0bc83ec54570077f1dc1da26142488930eabcc21cb7a33c1b545a194cbfb4c87e430c4b2bfb50

    • SSDEEP

      3072:slkfrcHVaq65Oe/ALwm19MYDzMLGquSOt+nSmgevSvoWAnvN0bfINcfln8rvK:Wkfrc0q47/UwQFSFnH9SArvakSflnCS

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (69) 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.

    • Deletes itself

    • 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

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops file in System32 directory

    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

5
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks