MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256e81510f9186eb2975dcce68a869c17b0274994ae90c06f716a4ffa561cc13809
MD5b7b62821a7cd6a5c731dc39cc85d0919
File Typeexe
Size782.0 KB
First Seen2025-10-02
File NameSecuriteInfo.com.Win32.MalwareX-gen.12126581
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: e81510f9186eb2975dcce68a869c17b0274994ae90c06f716a4ffa561cc13809
  • MD5: b7b62821a7cd6a5c731dc39cc85d0919

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: e81510f9186eb297"
        threat_level = "medium"
        first_seen = "2025-10-02"
    condition:
        hash.sha256(0, filesize) == "e81510f9186eb2975dcce68a869c17b0274994ae90c06f716a4ffa561cc13809"
}

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 e81510f9186eb2975dcce68a869c17b0274994ae90c06f716a4ffa561cc13809 # MD5 b7b62821a7cd6a5c731dc39cc85d0919
TypeValueNote
sha256 e81510f9186eb2975dcce68a869c17b0274994ae90c06f716a4ffa561cc13809 Sample:MassLogger
md5 b7b62821a7cd6a5c731dc39cc85d0919 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi