GootLoader | Threat Level: high | Type: Loader

Cryptographic Identifiers

SHA25637bc1718cf4665ecb28ddcd443d76530b8bf56c891489111f5c8a232e21505a0
MD582e1c2e3692f5386e39b64593cc185c3
File Typezip
Size33.7 KB
First Seen2022-11-16
File NameWorksheet for pronoun antecedent agreement (71335).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: 37bc1718cf4665ecb28ddcd443d76530b8bf56c891489111f5c8a232e21505a0
  • MD5: 82e1c2e3692f5386e39b64593cc185c3

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: 37bc1718cf4665ec"
        threat_level = "high"
        first_seen = "2022-11-16"
    condition:
        hash.sha256(0, filesize) == "37bc1718cf4665ecb28ddcd443d76530b8bf56c891489111f5c8a232e21505a0"
}

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 37bc1718cf4665ecb28ddcd443d76530b8bf56c891489111f5c8a232e21505a0 # MD5 82e1c2e3692f5386e39b64593cc185c3
TypeValueNote
sha256 37bc1718cf4665ecb28ddcd443d76530b8bf56c891489111f5c8a232e21505a0 Sample:GootLoader
md5 82e1c2e3692f5386e39b64593cc185c3 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