MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564ca20bfe950af1363686135585c6eac92d5a007e0200ced56284c063d79b913a
MD5e77adef97ab8cb25f476f002fcd99200
File Typeexe
Size1017.0 KB
First Seen2025-07-07
File Name4ca20bfe950af1363686135585c6eac92d5a007e0200ced56284c063d79b913a
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: 4ca20bfe950af1363686135585c6eac92d5a007e0200ced56284c063d79b913a
  • MD5: e77adef97ab8cb25f476f002fcd99200

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: 4ca20bfe950af136"
        threat_level = "medium"
        first_seen = "2025-07-07"
    condition:
        hash.sha256(0, filesize) == "4ca20bfe950af1363686135585c6eac92d5a007e0200ced56284c063d79b913a"
}

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 4ca20bfe950af1363686135585c6eac92d5a007e0200ced56284c063d79b913a # MD5 e77adef97ab8cb25f476f002fcd99200
TypeValueNote
sha256 4ca20bfe950af1363686135585c6eac92d5a007e0200ced56284c063d79b913a Sample:MassLogger
md5 e77adef97ab8cb25f476f002fcd99200 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi