MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256be9a6afa48295143f7ad35badc92bf886caa1b714689ea97ea1ec45bbea3cd6d
MD594f37a8102d932fe3cd42aba6dd42a05
File Typeexe
Size632.0 KB
First Seen2026-05-20
File Name890098765456465.exe
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: be9a6afa48295143f7ad35badc92bf886caa1b714689ea97ea1ec45bbea3cd6d
  • MD5: 94f37a8102d932fe3cd42aba6dd42a05

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: be9a6afa48295143"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "be9a6afa48295143f7ad35badc92bf886caa1b714689ea97ea1ec45bbea3cd6d"
}

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 be9a6afa48295143f7ad35badc92bf886caa1b714689ea97ea1ec45bbea3cd6d # MD5 94f37a8102d932fe3cd42aba6dd42a05
TypeValueNote
sha256 be9a6afa48295143f7ad35badc92bf886caa1b714689ea97ea1ec45bbea3cd6d Sample:MassLogger
md5 94f37a8102d932fe3cd42aba6dd42a05 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi