MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f67799cd9ce6b4691134db9c85bab1ed79cb17d6b9b805916f118251b0d0f1e8
MD518faf6be1dcc90f20ae94c45d64edeae
File Typeexe
Size1047.5 KB
First Seen2026-02-05
File Namef67799cd9ce6b4691134db9c85bab1ed79cb17d6b9b805916f118251b0d0f1e8
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: f67799cd9ce6b4691134db9c85bab1ed79cb17d6b9b805916f118251b0d0f1e8
  • MD5: 18faf6be1dcc90f20ae94c45d64edeae

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: f67799cd9ce6b469"
        threat_level = "medium"
        first_seen = "2026-02-05"
    condition:
        hash.sha256(0, filesize) == "f67799cd9ce6b4691134db9c85bab1ed79cb17d6b9b805916f118251b0d0f1e8"
}

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 f67799cd9ce6b4691134db9c85bab1ed79cb17d6b9b805916f118251b0d0f1e8 # MD5 18faf6be1dcc90f20ae94c45d64edeae
TypeValueNote
sha256 f67799cd9ce6b4691134db9c85bab1ed79cb17d6b9b805916f118251b0d0f1e8 Sample:MassLogger
md5 18faf6be1dcc90f20ae94c45d64edeae Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi