MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256e461e8361f2df96d23c65eb07b4ab023657b0a85521a8d14f1dea7ac655abdb8
MD5b36b3eaa21fc0183210f4ee45cfbb2cc
File Typeexe
Size9491.5 KB
First Seen2025-10-16
File NameReciept 10-15-2025-pdf.exe
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: e461e8361f2df96d23c65eb07b4ab023657b0a85521a8d14f1dea7ac655abdb8
  • MD5: b36b3eaa21fc0183210f4ee45cfbb2cc

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: e461e8361f2df96d"
        threat_level = "medium"
        first_seen = "2025-10-16"
    condition:
        hash.sha256(0, filesize) == "e461e8361f2df96d23c65eb07b4ab023657b0a85521a8d14f1dea7ac655abdb8"
}

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 e461e8361f2df96d23c65eb07b4ab023657b0a85521a8d14f1dea7ac655abdb8 # MD5 b36b3eaa21fc0183210f4ee45cfbb2cc
TypeValueNote
sha256 e461e8361f2df96d23c65eb07b4ab023657b0a85521a8d14f1dea7ac655abdb8 Sample:MassLogger
md5 b36b3eaa21fc0183210f4ee45cfbb2cc Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi