MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256cbbec8fcc0e23e23bcdce82ab97533c7b49f0bcac924cf254a2a8d02b9594ac5
MD5c28bd998170f68d88caa8d3b4549ddad
File Typeexe
Size782.0 KB
First Seen2025-10-05
File NameSecuriteInfo.com.Trojan.Siggen31.59338.4906.5768
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: cbbec8fcc0e23e23bcdce82ab97533c7b49f0bcac924cf254a2a8d02b9594ac5
  • MD5: c28bd998170f68d88caa8d3b4549ddad

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: cbbec8fcc0e23e23"
        threat_level = "medium"
        first_seen = "2025-10-05"
    condition:
        hash.sha256(0, filesize) == "cbbec8fcc0e23e23bcdce82ab97533c7b49f0bcac924cf254a2a8d02b9594ac5"
}

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 cbbec8fcc0e23e23bcdce82ab97533c7b49f0bcac924cf254a2a8d02b9594ac5 # MD5 c28bd998170f68d88caa8d3b4549ddad
TypeValueNote
sha256 cbbec8fcc0e23e23bcdce82ab97533c7b49f0bcac924cf254a2a8d02b9594ac5 Sample:MassLogger
md5 c28bd998170f68d88caa8d3b4549ddad Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi