MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25655011c7e77605612e1386d23d2bb03623326bd041c077e7913d02b16f9dd854a
MD5d24d95ad6e47389bb0c71485d9be9282
File Typeexe
Size881.0 KB
First Seen2025-11-06
File Name55011c7e77605612e1386d23d2bb03623326bd041c077e7913d02b16f9dd854a
Tagsexe, 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: 55011c7e77605612e1386d23d2bb03623326bd041c077e7913d02b16f9dd854a
  • MD5: d24d95ad6e47389bb0c71485d9be9282

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: 55011c7e77605612"
        threat_level = "medium"
        first_seen = "2025-11-06"
    condition:
        hash.sha256(0, filesize) == "55011c7e77605612e1386d23d2bb03623326bd041c077e7913d02b16f9dd854a"
}

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 55011c7e77605612e1386d23d2bb03623326bd041c077e7913d02b16f9dd854a # MD5 d24d95ad6e47389bb0c71485d9be9282
TypeValueNote
sha256 55011c7e77605612e1386d23d2bb03623326bd041c077e7913d02b16f9dd854a Sample:MassLogger
md5 d24d95ad6e47389bb0c71485d9be9282 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi