MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256323378dbca5ee14637ea3690b436b90f0ce5b3894051e9f37bc5f4a7b046135e
MD5f92195d5a261fc05d338fd9fdb9563ae
File Typeexe
Size608.5 KB
First Seen2025-08-12
File Name323378dbca5ee14637ea3690b436b90f0ce5b3894051e9f37bc5f4a7b046135e
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: 323378dbca5ee14637ea3690b436b90f0ce5b3894051e9f37bc5f4a7b046135e
  • MD5: f92195d5a261fc05d338fd9fdb9563ae

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: 323378dbca5ee146"
        threat_level = "medium"
        first_seen = "2025-08-12"
    condition:
        hash.sha256(0, filesize) == "323378dbca5ee14637ea3690b436b90f0ce5b3894051e9f37bc5f4a7b046135e"
}

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 323378dbca5ee14637ea3690b436b90f0ce5b3894051e9f37bc5f4a7b046135e # MD5 f92195d5a261fc05d338fd9fdb9563ae
TypeValueNote
sha256 323378dbca5ee14637ea3690b436b90f0ce5b3894051e9f37bc5f4a7b046135e Sample:MassLogger
md5 f92195d5a261fc05d338fd9fdb9563ae Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi