Overview

overview

10

Static

static

10

Oski Cracked.exe

windows10-1703-x64

10

Oski Cracked.exe

windows7-x64

10

Oski Cracked.exe

windows10-2004-x64

10

Oski Cracked.exe

windows11-21h2-x64

10

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General

  • Target

    Oski Cracked.exe

  • Size

    4.5MB

  • Sample

    240516-wdvlaage36

  • MD5

    a52baa5b64635eec7c7b888bff016aac

  • SHA1

    a86b895b483df3c657553f498ebcd9c97b89415f

  • SHA256

    cd986b32c220cc04c9feb5e42a393fb34efc884d176e6d8d266e54ac4840cfa3

  • SHA512

    bed140ed03ed4b5da82edf1139eced7c84a56fe75f5a8926002414ed0b8f25fbb6cbf9e3111ff6d9b5d942382be331a674f17cf10b2150f171f32276ad4b3980

  • SSDEEP

    98304:iJCbuSMburCaMZh0yEKj+WRvrY1dcZ048HV/bFy8jJ7APB:8mMbuQZlFY7KsZPNA

Score
10/10
oskiquasarvenomratvilva v3evasioninfostealerratrootkitspywarestealertrojan

Malware Config

Extracted

Family

quasar

Attributes
  • reconnect_delay

    3000

Extracted

Family

quasar

Version

2.1.0.0

Botnet

VILVA V3

C2

67.213.221.18:7812

Mutex

VNM_MUTEX_DR6NAzaayWgRGuLNpp

Attributes
  • encryption_key

    izGdDJVzqIzRDlXcooB4

  • install_name

    Windows Defender Security.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Service

  • subdirectory

    WindowsDir

Targets

    • Target

      Oski Cracked.exe

    • Size

      4.5MB

    • MD5

      a52baa5b64635eec7c7b888bff016aac

    • SHA1

      a86b895b483df3c657553f498ebcd9c97b89415f

    • SHA256

      cd986b32c220cc04c9feb5e42a393fb34efc884d176e6d8d266e54ac4840cfa3

    • SHA512

      bed140ed03ed4b5da82edf1139eced7c84a56fe75f5a8926002414ed0b8f25fbb6cbf9e3111ff6d9b5d942382be331a674f17cf10b2150f171f32276ad4b3980

    • SSDEEP

      98304:iJCbuSMburCaMZh0yEKj+WRvrY1dcZ048HV/bFy8jJ7APB:8mMbuQZlFY7KsZPNA

    Score
    10/10
    oskiquasarvenomratvilva v3evasioninfostealerratrootkitspywarestealertrojan

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • Oski

      Oski is an infostealer targeting browser data, crypto wallets.

      infostealeroski

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • VenomRAT

      VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

      ratrootkitstealervenomrat

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

2
T1112

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Credential Access

Discovery

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks