MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25637deb7d4ba1e81700197730a2f9259414d00c05c9b56400a364c914dc0a44b4a
MD5d83fb100ad227f0dd48918bdc03285ee
File Typeexe
Size552.5 KB
First Seen2025-06-23
File NamerPurchaseOrderM.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: 37deb7d4ba1e81700197730a2f9259414d00c05c9b56400a364c914dc0a44b4a
  • MD5: d83fb100ad227f0dd48918bdc03285ee

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: 37deb7d4ba1e8170"
        threat_level = "medium"
        first_seen = "2025-06-23"
    condition:
        hash.sha256(0, filesize) == "37deb7d4ba1e81700197730a2f9259414d00c05c9b56400a364c914dc0a44b4a"
}

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 37deb7d4ba1e81700197730a2f9259414d00c05c9b56400a364c914dc0a44b4a # MD5 d83fb100ad227f0dd48918bdc03285ee
TypeValueNote
sha256 37deb7d4ba1e81700197730a2f9259414d00c05c9b56400a364c914dc0a44b4a Sample:MassLogger
md5 d83fb100ad227f0dd48918bdc03285ee Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi