MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25607cb9bf933b29559c8a17f9c85207be8646e89b59872b1f116bf47acbc487799
MD593cb9e6898dd588a7f9f3af3ae07df23
File Typeexe
Size549.0 KB
First Seen2025-06-23
File NameSecuriteInfo.com.Trojan-Spy.Agent.25571.2041
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: 07cb9bf933b29559c8a17f9c85207be8646e89b59872b1f116bf47acbc487799
  • MD5: 93cb9e6898dd588a7f9f3af3ae07df23

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: 07cb9bf933b29559"
        threat_level = "medium"
        first_seen = "2025-06-23"
    condition:
        hash.sha256(0, filesize) == "07cb9bf933b29559c8a17f9c85207be8646e89b59872b1f116bf47acbc487799"
}

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 07cb9bf933b29559c8a17f9c85207be8646e89b59872b1f116bf47acbc487799 # MD5 93cb9e6898dd588a7f9f3af3ae07df23
TypeValueNote
sha256 07cb9bf933b29559c8a17f9c85207be8646e89b59872b1f116bf47acbc487799 Sample:MassLogger
md5 93cb9e6898dd588a7f9f3af3ae07df23 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi