MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25698d21ade5945dfb38682ae1ad50e941e9c0e4864f07039b1aa1d976b0922414b
MD5c8145292c90f6304565e2e4f66eb1f8f
File Typeexe
Size858.0 KB
First Seen2025-08-19
File NameSecuriteInfo.com.Win32.MalwareX-gen.36218298
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: 98d21ade5945dfb38682ae1ad50e941e9c0e4864f07039b1aa1d976b0922414b
  • MD5: c8145292c90f6304565e2e4f66eb1f8f

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: 98d21ade5945dfb3"
        threat_level = "medium"
        first_seen = "2025-08-19"
    condition:
        hash.sha256(0, filesize) == "98d21ade5945dfb38682ae1ad50e941e9c0e4864f07039b1aa1d976b0922414b"
}

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 98d21ade5945dfb38682ae1ad50e941e9c0e4864f07039b1aa1d976b0922414b # MD5 c8145292c90f6304565e2e4f66eb1f8f
TypeValueNote
sha256 98d21ade5945dfb38682ae1ad50e941e9c0e4864f07039b1aa1d976b0922414b Sample:MassLogger
md5 c8145292c90f6304565e2e4f66eb1f8f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi