MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f861e0a3713c68251d0a7bbed32dd0a28244f2fbf261986df942cddbbea4c90e
MD5240efedcf437f6d0079292191cbeb574
File Typeexe
Size1046.0 KB
First Seen2026-06-08
File Namef861e0a3713c68251d0a7bbed32dd0a28244f2fbf261986df942cddbbea4c90e
Tagsexe, MassLogger

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

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

Threat Indicators (IOC)

  • SHA256: f861e0a3713c68251d0a7bbed32dd0a28244f2fbf261986df942cddbbea4c90e
  • MD5: 240efedcf437f6d0079292191cbeb574

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: f861e0a3713c6825"
        threat_level = "medium"
        first_seen = "2026-06-08"
    condition:
        hash.sha256(0, filesize) == "f861e0a3713c68251d0a7bbed32dd0a28244f2fbf261986df942cddbbea4c90e"
}

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 f861e0a3713c68251d0a7bbed32dd0a28244f2fbf261986df942cddbbea4c90e # MD5 240efedcf437f6d0079292191cbeb574
TypeValueNote
sha256 f861e0a3713c68251d0a7bbed32dd0a28244f2fbf261986df942cddbbea4c90e Sample:MassLogger
md5 240efedcf437f6d0079292191cbeb574 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi