MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569626576751f3bb699691a8b760b018914957fe19c7af62067db8b4a4aa69c43c
MD50422c91a407584f8aeba64e962a64b31
File Typeexe
Size507.5 KB
First Seen2025-06-10
File Name9626576751f3bb699691a8b760b018914957fe19c7af62067db8b4a4aa69c43c
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: 9626576751f3bb699691a8b760b018914957fe19c7af62067db8b4a4aa69c43c
  • MD5: 0422c91a407584f8aeba64e962a64b31

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: 9626576751f3bb69"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "9626576751f3bb699691a8b760b018914957fe19c7af62067db8b4a4aa69c43c"
}

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 9626576751f3bb699691a8b760b018914957fe19c7af62067db8b4a4aa69c43c # MD5 0422c91a407584f8aeba64e962a64b31
TypeValueNote
sha256 9626576751f3bb699691a8b760b018914957fe19c7af62067db8b4a4aa69c43c Sample:MassLogger
md5 0422c91a407584f8aeba64e962a64b31 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi