MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256e354f2ec41ae4b915c485b252c4cee303d5f7c0badd07fd7dba48f9fe9b3367e
MD52efe44ad9bddbdbadf683d2eb669b3b6
File Typeexe
Size558.0 KB
First Seen2025-11-24
File NameSecuriteInfo.com.Trojan.Packed2.50433.6589.16040
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: e354f2ec41ae4b915c485b252c4cee303d5f7c0badd07fd7dba48f9fe9b3367e
  • MD5: 2efe44ad9bddbdbadf683d2eb669b3b6

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: e354f2ec41ae4b91"
        threat_level = "medium"
        first_seen = "2025-11-24"
    condition:
        hash.sha256(0, filesize) == "e354f2ec41ae4b915c485b252c4cee303d5f7c0badd07fd7dba48f9fe9b3367e"
}

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 e354f2ec41ae4b915c485b252c4cee303d5f7c0badd07fd7dba48f9fe9b3367e # MD5 2efe44ad9bddbdbadf683d2eb669b3b6
TypeValueNote
sha256 e354f2ec41ae4b915c485b252c4cee303d5f7c0badd07fd7dba48f9fe9b3367e Sample:MassLogger
md5 2efe44ad9bddbdbadf683d2eb669b3b6 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi