MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256849980f3de2765b08724a192965702c7b9ffc9c2da402d8968f9f8f2213037f0
MD50585f848edb2a9075e464b1ff32b432d
File Typeexe
Size753.0 KB
First Seen2025-09-15
File NameSecuriteInfo.com.W32.MSIL_Agent.JXW.gen.Eldorado.2938.13647
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: 849980f3de2765b08724a192965702c7b9ffc9c2da402d8968f9f8f2213037f0
  • MD5: 0585f848edb2a9075e464b1ff32b432d

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: 849980f3de2765b0"
        threat_level = "medium"
        first_seen = "2025-09-15"
    condition:
        hash.sha256(0, filesize) == "849980f3de2765b08724a192965702c7b9ffc9c2da402d8968f9f8f2213037f0"
}

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 849980f3de2765b08724a192965702c7b9ffc9c2da402d8968f9f8f2213037f0 # MD5 0585f848edb2a9075e464b1ff32b432d
TypeValueNote
sha256 849980f3de2765b08724a192965702c7b9ffc9c2da402d8968f9f8f2213037f0 Sample:MassLogger
md5 0585f848edb2a9075e464b1ff32b432d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi