MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256fb2b445ef7f400976f11b93dbe1c1cd655e9c1288fa125aa7ead3e3bed483118
MD5eed69c54c1d725b837768f9bc304814b
File Typeexe
Size660.5 KB
First Seen2025-10-07
File NameSecuriteInfo.com.Trojan.PWS.Siggen3.41708.27344.22052
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: fb2b445ef7f400976f11b93dbe1c1cd655e9c1288fa125aa7ead3e3bed483118
  • MD5: eed69c54c1d725b837768f9bc304814b

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: fb2b445ef7f40097"
        threat_level = "medium"
        first_seen = "2025-10-07"
    condition:
        hash.sha256(0, filesize) == "fb2b445ef7f400976f11b93dbe1c1cd655e9c1288fa125aa7ead3e3bed483118"
}

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 fb2b445ef7f400976f11b93dbe1c1cd655e9c1288fa125aa7ead3e3bed483118 # MD5 eed69c54c1d725b837768f9bc304814b
TypeValueNote
sha256 fb2b445ef7f400976f11b93dbe1c1cd655e9c1288fa125aa7ead3e3bed483118 Sample:MassLogger
md5 eed69c54c1d725b837768f9bc304814b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi