MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568820f32e5cb85755d08b52a3a7c1e69ee05be2c77bfdd683b9d5bfc3990aba2c
MD5f466347e23bcfb517d887faf122c7aa8
File Typeexe
Size869.0 KB
First Seen2026-05-08
File Name8820f32e5cb85755d08b52a3a7c1e69ee05be2c77bfdd683b9d5bfc3990aba2c
Tagsexe, MassLogger

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 8820f32e5cb85755d08b52a3a7c1e69ee05be2c77bfdd683b9d5bfc3990aba2c
  • MD5: f466347e23bcfb517d887faf122c7aa8

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: 8820f32e5cb85755"
        threat_level = "medium"
        first_seen = "2026-05-08"
    condition:
        hash.sha256(0, filesize) == "8820f32e5cb85755d08b52a3a7c1e69ee05be2c77bfdd683b9d5bfc3990aba2c"
}

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 8820f32e5cb85755d08b52a3a7c1e69ee05be2c77bfdd683b9d5bfc3990aba2c # MD5 f466347e23bcfb517d887faf122c7aa8
TypeValueNote
sha256 8820f32e5cb85755d08b52a3a7c1e69ee05be2c77bfdd683b9d5bfc3990aba2c Sample:MassLogger
md5 f466347e23bcfb517d887faf122c7aa8 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi