MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563f36470c8de5dce133dd63e3072f9abf88f1676a57455d395cf8b5c09f5f627e
MD56aea42a5948e5280b59ba52e1e94f52f
File Typeexe
Size490.5 KB
First Seen2025-08-11
File NamePayment Advice.bat.exe
Tagsdarksender--mcnzxz-com, exe, 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: 3f36470c8de5dce133dd63e3072f9abf88f1676a57455d395cf8b5c09f5f627e
  • MD5: 6aea42a5948e5280b59ba52e1e94f52f

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: 3f36470c8de5dce1"
        threat_level = "medium"
        first_seen = "2025-08-11"
    condition:
        hash.sha256(0, filesize) == "3f36470c8de5dce133dd63e3072f9abf88f1676a57455d395cf8b5c09f5f627e"
}

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 3f36470c8de5dce133dd63e3072f9abf88f1676a57455d395cf8b5c09f5f627e # MD5 6aea42a5948e5280b59ba52e1e94f52f
TypeValueNote
sha256 3f36470c8de5dce133dd63e3072f9abf88f1676a57455d395cf8b5c09f5f627e Sample:MassLogger
md5 6aea42a5948e5280b59ba52e1e94f52f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi