Overview

overview

10

Static

static

3

nurik.exe

windows10-ltsc_2021-x64

10

nurik.exe

windows10-2004-x64

10

nurik.exe

windows11-21h2-x64

10

nurik.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    nurik.exe
  • Size 5.5MB
  • Sample260701-yzfqcses2l
  • SHA256 154a4365050abcca9c6958cde8ccfb578a5d0641bf29bdb8af462b83add4f26a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
dracula_stealercollectiondiscoveryexecutionpersistenceprivilege_escalationspywarestealer

Malware Config

Targets

    • Target
      nurik.exe
    • Size 5.5MB
    • SHA256 154a4365050abcca9c6958cde8ccfb578a5d0641bf29bdb8af462b83add4f26a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    collectiondiscoveryexecutiondracula_stealerpersistencestealerprivilege_escalationspyware

    • Detects Dracula aka Samurai Stealer payload

    • Family: Dracula, Samurai

      Dracula aka Samurai is a stealer written in C#.

      stealerdracula_stealer

    • Modifies WinLogon for persistence

      persistence

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • 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

    • Accesses Microsoft Outlook profiles

      collection

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

4
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Wi-Fi Discovery

1
T1016.002

Lateral Movement

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Command and Control

Exfiltration

Impact

Tasks