MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a3f214c6164670ea3078620afc2719cf1bba7d93cc5f8d090c7e49b23b782d05
MD5577e9c9c69c263f914808f76dc6c97bc
File Typeexe
Size783.5 KB
First Seen2026-05-08
File Namea3f214c6164670ea3078620afc2719cf1bba7d93cc5f8d090c7e49b23b782d05
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: a3f214c6164670ea3078620afc2719cf1bba7d93cc5f8d090c7e49b23b782d05
  • MD5: 577e9c9c69c263f914808f76dc6c97bc

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: a3f214c6164670ea"
        threat_level = "medium"
        first_seen = "2026-05-08"
    condition:
        hash.sha256(0, filesize) == "a3f214c6164670ea3078620afc2719cf1bba7d93cc5f8d090c7e49b23b782d05"
}

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 a3f214c6164670ea3078620afc2719cf1bba7d93cc5f8d090c7e49b23b782d05 # MD5 577e9c9c69c263f914808f76dc6c97bc
TypeValueNote
sha256 a3f214c6164670ea3078620afc2719cf1bba7d93cc5f8d090c7e49b23b782d05 Sample:MassLogger
md5 577e9c9c69c263f914808f76dc6c97bc Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi