MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256819524e650df7f7050d41834f4a30b370e50d99add64ace080c2b57df5ba1997
MD5ef5088d93780cc4b4c5c7224f2160761
File Typeexe
Size689.5 KB
First Seen2025-09-02
File NameNUTU2GLnqodBsbZ.exe
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: 819524e650df7f7050d41834f4a30b370e50d99add64ace080c2b57df5ba1997
  • MD5: ef5088d93780cc4b4c5c7224f2160761

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: 819524e650df7f70"
        threat_level = "medium"
        first_seen = "2025-09-02"
    condition:
        hash.sha256(0, filesize) == "819524e650df7f7050d41834f4a30b370e50d99add64ace080c2b57df5ba1997"
}

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 819524e650df7f7050d41834f4a30b370e50d99add64ace080c2b57df5ba1997 # MD5 ef5088d93780cc4b4c5c7224f2160761
TypeValueNote
sha256 819524e650df7f7050d41834f4a30b370e50d99add64ace080c2b57df5ba1997 Sample:MassLogger
md5 ef5088d93780cc4b4c5c7224f2160761 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi