MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a72f06669b331e6a5fc7d6b6ff963fc68c4943c55dcfe3d36324d6e3867e2a39
MD574c5159c0d257641a3010a7ff32cc43f
File Typeexe
Size822.5 KB
First Seen2026-02-20
File NameSecuriteInfo.com.Trojan.Inject6.27145.361.30309
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: a72f06669b331e6a5fc7d6b6ff963fc68c4943c55dcfe3d36324d6e3867e2a39
  • MD5: 74c5159c0d257641a3010a7ff32cc43f

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: a72f06669b331e6a"
        threat_level = "medium"
        first_seen = "2026-02-20"
    condition:
        hash.sha256(0, filesize) == "a72f06669b331e6a5fc7d6b6ff963fc68c4943c55dcfe3d36324d6e3867e2a39"
}

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 a72f06669b331e6a5fc7d6b6ff963fc68c4943c55dcfe3d36324d6e3867e2a39 # MD5 74c5159c0d257641a3010a7ff32cc43f
TypeValueNote
sha256 a72f06669b331e6a5fc7d6b6ff963fc68c4943c55dcfe3d36324d6e3867e2a39 Sample:MassLogger
md5 74c5159c0d257641a3010a7ff32cc43f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi