GootLoader | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA256b5ce5f588420c3eac43acb0752598e8fc6a41634f8c1d6e0f175319e8e8d11f9
MD52ca16377420e8becf3f204b0c6c4297f
File Typezip
Size36.7 KB
First Seen2022-11-16
File NameHawaii rental agreement 2020 pdf (79984).zip
TagsGootkit, GootLoader, js, zip

Malware Family: GootLoader

GootLoader, SEO loader'dır.

TypeLoader
Programming LanguageJavaScript
Target PlatformWindows
C2 ProtocolHTTPS
PurposeSEO loader
First Seen Year2020
AliasesGootKit

Threat Indicators (IOC)

  • SHA256: b5ce5f588420c3eac43acb0752598e8fc6a41634f8c1d6e0f175319e8e8d11f9
  • MD5: 2ca16377420e8becf3f204b0c6c4297f

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Disconnect the system from the network — the loader may be downloading more malware
  2. Analyze every downloaded payload
  3. Inspect all network traffic and cut suspicious connections
  4. Run a full antivirus scan
  5. Consider reimaging the system

YARA Rule Hints

rule GootLoader_SHA256 {
    meta:
        description = "GootLoader sample: b5ce5f588420c3ea"
        threat_level = "high"
        first_seen = "2022-11-16"
    condition:
        hash.sha256(0, filesize) == "b5ce5f588420c3eac43acb0752598e8fc6a41634f8c1d6e0f175319e8e8d11f9"
}

Gootloader — Malware Profile

GootLoader/GootKit v3 JavaScript loader. SEO zehirleme kampanyasi. Hukuki belge lurü. JScript dropper.

Malware Type
Loader
Programming Language
JavaScript
C2 Protocol
HTTPS
Target Systems
Windows
Also Known As (AKA)
GootKit

Technical Details

Varyanta gore C/C#/VBS/PS1, anti-analysis (VM/debugger check), persistence (Registry/Task Scheduler/Startup folder), payload decryption ve injection (shellcode/PE), fileless execution teknikleri

Capabilities & Behavior

Payload İndirme
Süreç Enjeksiyonu
Modüler Mimari
Kimlik Bilgisi Hırsızlığı
Yanal Hareket
Kalıcılık
Anti-VM/Sandbox
İkincil Payload Dağıtımı

IOC List (2 indicators)

IOC — GootLoader
# SHA256 b5ce5f588420c3eac43acb0752598e8fc6a41634f8c1d6e0f175319e8e8d11f9 # MD5 2ca16377420e8becf3f204b0c6c4297f
TypeValueNote
sha256 b5ce5f588420c3eac43acb0752598e8fc6a41634f8c1d6e0f175319e8e8d11f9 Sample:GootLoader
md5 2ca16377420e8becf3f204b0c6c4297f Sample:GootLoader

C2 Servers (3 recorded servers for this family)

Address Type Port Protocol Status Country
23.227.203.68 ip 443 HTTPS active US
216.122.229.106 ip 443 HTTPS inactive US
login.itwrx.com domain 443 HTTPS inactive US

C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.

Tags
gootloaderloadermalwarehighsha256hash-analizi