MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256aac88b9def1f1fbafdcc038d866997913b52f609465680a1107e70ca2e5fc967
MD5307c83bb9820596cac7911727fbdf7d9
File Typez
Size629.5 KB
First Seen2025-10-06
File NameP.O 3805.PDF.z
TagsMassLogger, z

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: aac88b9def1f1fbafdcc038d866997913b52f609465680a1107e70ca2e5fc967
  • MD5: 307c83bb9820596cac7911727fbdf7d9

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: aac88b9def1f1fba"
        threat_level = "medium"
        first_seen = "2025-10-06"
    condition:
        hash.sha256(0, filesize) == "aac88b9def1f1fbafdcc038d866997913b52f609465680a1107e70ca2e5fc967"
}

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 aac88b9def1f1fbafdcc038d866997913b52f609465680a1107e70ca2e5fc967 # MD5 307c83bb9820596cac7911727fbdf7d9
TypeValueNote
sha256 aac88b9def1f1fbafdcc038d866997913b52f609465680a1107e70ca2e5fc967 Sample:MassLogger
md5 307c83bb9820596cac7911727fbdf7d9 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi