MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256bf9317a764ca6548a8f1c084b357da6969b6c4d4994abb704155a4a1e9ccc401
MD547010c42c30109aa25fa10bb4038f404
File Typeexe
Size657.0 KB
First Seen2025-10-20
File NamePurchase order_(P.O_T4787074)_HESHENG JIAXIN.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: bf9317a764ca6548a8f1c084b357da6969b6c4d4994abb704155a4a1e9ccc401
  • MD5: 47010c42c30109aa25fa10bb4038f404

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: bf9317a764ca6548"
        threat_level = "medium"
        first_seen = "2025-10-20"
    condition:
        hash.sha256(0, filesize) == "bf9317a764ca6548a8f1c084b357da6969b6c4d4994abb704155a4a1e9ccc401"
}

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 bf9317a764ca6548a8f1c084b357da6969b6c4d4994abb704155a4a1e9ccc401 # MD5 47010c42c30109aa25fa10bb4038f404
TypeValueNote
sha256 bf9317a764ca6548a8f1c084b357da6969b6c4d4994abb704155a4a1e9ccc401 Sample:MassLogger
md5 47010c42c30109aa25fa10bb4038f404 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi