MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256b562701a74cbd25fbbb229052a4742d3c6ef9b502d0f1e808113fbb6cd7f2e67
MD5226fe048b00f2f49d45278125ce5c9d7
File Typeexe
Size786.0 KB
First Seen2025-06-10
File Nameb562701a74cbd25fbbb229052a4742d3c6ef9b502d0f1e808113fbb6cd7f2e67
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: b562701a74cbd25fbbb229052a4742d3c6ef9b502d0f1e808113fbb6cd7f2e67
  • MD5: 226fe048b00f2f49d45278125ce5c9d7

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: b562701a74cbd25f"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "b562701a74cbd25fbbb229052a4742d3c6ef9b502d0f1e808113fbb6cd7f2e67"
}

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 b562701a74cbd25fbbb229052a4742d3c6ef9b502d0f1e808113fbb6cd7f2e67 # MD5 226fe048b00f2f49d45278125ce5c9d7
TypeValueNote
sha256 b562701a74cbd25fbbb229052a4742d3c6ef9b502d0f1e808113fbb6cd7f2e67 Sample:MassLogger
md5 226fe048b00f2f49d45278125ce5c9d7 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi