MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568670a580a3a790eaadd5ace20c9df5ecce4b46b422bbc5ea70e2509a0afb9294
MD53faddb7a25432b04eda5709e0f115c86
File Typejs
Size4410.5 KB
First Seen2025-10-23
File NameDAMAGE PICTURES.js
Tagsjs, MassLogger

Malware Family: MassLogger

MassLogger, email keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 8670a580a3a790eaadd5ace20c9df5ecce4b46b422bbc5ea70e2509a0afb9294
  • MD5: 3faddb7a25432b04eda5709e0f115c86

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

System Cleanup Guide

  1. Disconnect the system from the network immediately
  2. Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
  3. Move crypto wallets to a new address and abandon the old ones
  4. Start a full scan with up-to-date antivirus
  5. Clear saved browser passwords and enable 2FA
  6. Sign out of all sessions on every affected service

YARA Rule Hints

rule MassLogger_SHA256 {
    meta:
        description = "MassLogger sample: 8670a580a3a790ea"
        threat_level = "medium"
        first_seen = "2025-10-23"
    condition:
        hash.sha256(0, filesize) == "8670a580a3a790eaadd5ace20c9df5ecce4b46b422bbc5ea70e2509a0afb9294"
}

MassLogger — Malware Profile

MassLogger credential stealer. PT2600000043.js Portekiz fatura lurü. CommonJS obfuscation. dispatch configuration data.

Malware Type
Infostealer
Programming Language
C#/.NET
C2 Protocol
SMTP/FTP
Target Systems
Windows

Capabilities & Behavior

Tarayıcı Kimlik Bilgileri
Çerez Hırsızlığı
Kripto Cüzdan Çalma
Sistem Bilgisi
Ekran Görüntüsü
FTP/SSH İstemci Şifreleri
E-posta İstemcisi Çalma
Veri Sızıntısı

IOC List (2 indicators)

IOC — MassLogger
# SHA256 8670a580a3a790eaadd5ace20c9df5ecce4b46b422bbc5ea70e2509a0afb9294 # MD5 3faddb7a25432b04eda5709e0f115c86
TypeValueNote
sha256 8670a580a3a790eaadd5ace20c9df5ecce4b46b422bbc5ea70e2509a0afb9294 Sample:MassLogger
md5 3faddb7a25432b04eda5709e0f115c86 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi