MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568a7744ef7ff9df61995edc1cd227d72c4ccbe86764e99f22d38ad9e6d94e9b0e
MD57f2f16ab3a656d81b4e6d7d6fce840c2
File Typeexe
Size784.5 KB
First Seen2025-09-25
File NameSecuriteInfo.com.Trojan.PackedNET.3415.9445.28717
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: 8a7744ef7ff9df61995edc1cd227d72c4ccbe86764e99f22d38ad9e6d94e9b0e
  • MD5: 7f2f16ab3a656d81b4e6d7d6fce840c2

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: 8a7744ef7ff9df61"
        threat_level = "medium"
        first_seen = "2025-09-25"
    condition:
        hash.sha256(0, filesize) == "8a7744ef7ff9df61995edc1cd227d72c4ccbe86764e99f22d38ad9e6d94e9b0e"
}

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 8a7744ef7ff9df61995edc1cd227d72c4ccbe86764e99f22d38ad9e6d94e9b0e # MD5 7f2f16ab3a656d81b4e6d7d6fce840c2
TypeValueNote
sha256 8a7744ef7ff9df61995edc1cd227d72c4ccbe86764e99f22d38ad9e6d94e9b0e Sample:MassLogger
md5 7f2f16ab3a656d81b4e6d7d6fce840c2 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi