MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25620fdbc1277f3fedc97b73e658938bc2e8034dca3d6c2ae09c07ba5d8c19938b6
MD596dcb71df3f80be437e21822952d9972
File Typez
Size4.4 KB
First Seen2025-07-03
File NamenxB7PDF.z
TagsMassLogger, z

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: 20fdbc1277f3fedc97b73e658938bc2e8034dca3d6c2ae09c07ba5d8c19938b6
  • MD5: 96dcb71df3f80be437e21822952d9972

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: 20fdbc1277f3fedc"
        threat_level = "medium"
        first_seen = "2025-07-03"
    condition:
        hash.sha256(0, filesize) == "20fdbc1277f3fedc97b73e658938bc2e8034dca3d6c2ae09c07ba5d8c19938b6"
}

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 20fdbc1277f3fedc97b73e658938bc2e8034dca3d6c2ae09c07ba5d8c19938b6 # MD5 96dcb71df3f80be437e21822952d9972
TypeValueNote
sha256 20fdbc1277f3fedc97b73e658938bc2e8034dca3d6c2ae09c07ba5d8c19938b6 Sample:MassLogger
md5 96dcb71df3f80be437e21822952d9972 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi