MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567553b95daaa8bf122add4c34e160f80ad4438680185b820788b31cba9a66379d
MD5a1ad4efa07cbdfba5413c12516e2f78f
File Typeexe
Size515.5 KB
First Seen2025-07-07
File Name7553b95daaa8bf122add4c34e160f80ad4438680185b820788b31cba9a66379d
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: 7553b95daaa8bf122add4c34e160f80ad4438680185b820788b31cba9a66379d
  • MD5: a1ad4efa07cbdfba5413c12516e2f78f

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: 7553b95daaa8bf12"
        threat_level = "medium"
        first_seen = "2025-07-07"
    condition:
        hash.sha256(0, filesize) == "7553b95daaa8bf122add4c34e160f80ad4438680185b820788b31cba9a66379d"
}

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 7553b95daaa8bf122add4c34e160f80ad4438680185b820788b31cba9a66379d # MD5 a1ad4efa07cbdfba5413c12516e2f78f
TypeValueNote
sha256 7553b95daaa8bf122add4c34e160f80ad4438680185b820788b31cba9a66379d Sample:MassLogger
md5 a1ad4efa07cbdfba5413c12516e2f78f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi