MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25665032d50c2a6525b8b9cc9636278a4228bbe65ed478c4cea87e40370b2954c1d
MD57265f9e99a4f94426a95c237c271dadb
File Typeexe
Size746.0 KB
First Seen2025-09-08
File NameSecuriteInfo.com.Win32.MalwareX-gen.65894249
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: 65032d50c2a6525b8b9cc9636278a4228bbe65ed478c4cea87e40370b2954c1d
  • MD5: 7265f9e99a4f94426a95c237c271dadb

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: 65032d50c2a6525b"
        threat_level = "medium"
        first_seen = "2025-09-08"
    condition:
        hash.sha256(0, filesize) == "65032d50c2a6525b8b9cc9636278a4228bbe65ed478c4cea87e40370b2954c1d"
}

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 65032d50c2a6525b8b9cc9636278a4228bbe65ed478c4cea87e40370b2954c1d # MD5 7265f9e99a4f94426a95c237c271dadb
TypeValueNote
sha256 65032d50c2a6525b8b9cc9636278a4228bbe65ed478c4cea87e40370b2954c1d Sample:MassLogger
md5 7265f9e99a4f94426a95c237c271dadb Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi