MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256eaea1205072204c46556533a5e45d4de5379402798d539dacae3e13b32e245ce
MD5d116bc5766c9cf24372bc861f254dd06
File Typejs
Size222.7 KB
First Seen2025-11-26
File NameSİPARİŞ-25-11-2025_PDF.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: eaea1205072204c46556533a5e45d4de5379402798d539dacae3e13b32e245ce
  • MD5: d116bc5766c9cf24372bc861f254dd06

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: eaea1205072204c4"
        threat_level = "medium"
        first_seen = "2025-11-26"
    condition:
        hash.sha256(0, filesize) == "eaea1205072204c46556533a5e45d4de5379402798d539dacae3e13b32e245ce"
}

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 eaea1205072204c46556533a5e45d4de5379402798d539dacae3e13b32e245ce # MD5 d116bc5766c9cf24372bc861f254dd06
TypeValueNote
sha256 eaea1205072204c46556533a5e45d4de5379402798d539dacae3e13b32e245ce Sample:MassLogger
md5 d116bc5766c9cf24372bc861f254dd06 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi