MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569612b142e2991ff8c9b66b283b9727cd8d2b5afff8521e8bb8806d36dcab5c43
MD527be080de9ef48a0079ddabf5d879d32
File Typeexe
Size1040.0 KB
First Seen2026-03-19
File NameSecuriteInfo.com.Trojan.Siggen32.29264.18250.29244
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: 9612b142e2991ff8c9b66b283b9727cd8d2b5afff8521e8bb8806d36dcab5c43
  • MD5: 27be080de9ef48a0079ddabf5d879d32

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: 9612b142e2991ff8"
        threat_level = "medium"
        first_seen = "2026-03-19"
    condition:
        hash.sha256(0, filesize) == "9612b142e2991ff8c9b66b283b9727cd8d2b5afff8521e8bb8806d36dcab5c43"
}

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 9612b142e2991ff8c9b66b283b9727cd8d2b5afff8521e8bb8806d36dcab5c43 # MD5 27be080de9ef48a0079ddabf5d879d32
TypeValueNote
sha256 9612b142e2991ff8c9b66b283b9727cd8d2b5afff8521e8bb8806d36dcab5c43 Sample:MassLogger
md5 27be080de9ef48a0079ddabf5d879d32 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi