MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569d56706f4d884f4733a66573e4ccd01315b3a6f45f7ed541fbcf050e6b4ccc60
MD53116bc4871da7b3a54cf4be823961f35
File Typeexe
Size937.5 KB
First Seen2025-07-07
File Name9d56706f4d884f4733a66573e4ccd01315b3a6f45f7ed541fbcf050e6b4ccc60
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: 9d56706f4d884f4733a66573e4ccd01315b3a6f45f7ed541fbcf050e6b4ccc60
  • MD5: 3116bc4871da7b3a54cf4be823961f35

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: 9d56706f4d884f47"
        threat_level = "medium"
        first_seen = "2025-07-07"
    condition:
        hash.sha256(0, filesize) == "9d56706f4d884f4733a66573e4ccd01315b3a6f45f7ed541fbcf050e6b4ccc60"
}

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 9d56706f4d884f4733a66573e4ccd01315b3a6f45f7ed541fbcf050e6b4ccc60 # MD5 3116bc4871da7b3a54cf4be823961f35
TypeValueNote
sha256 9d56706f4d884f4733a66573e4ccd01315b3a6f45f7ed541fbcf050e6b4ccc60 Sample:MassLogger
md5 3116bc4871da7b3a54cf4be823961f35 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi