MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563e0f36140d18878db89c424c6c0293710523c9973bcf5b64f81bc26a2e8de8d6
MD557c0fd6dc79db3bedb2238eaa22a9e8e
File Typezip
Size5064.5 KB
First Seen2025-09-03
File Nameimage_00102pdf.zip
Tagsdll, MassLogger, stealer, zip

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: 3e0f36140d18878db89c424c6c0293710523c9973bcf5b64f81bc26a2e8de8d6
  • MD5: 57c0fd6dc79db3bedb2238eaa22a9e8e

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: 3e0f36140d18878d"
        threat_level = "medium"
        first_seen = "2025-09-03"
    condition:
        hash.sha256(0, filesize) == "3e0f36140d18878db89c424c6c0293710523c9973bcf5b64f81bc26a2e8de8d6"
}

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 3e0f36140d18878db89c424c6c0293710523c9973bcf5b64f81bc26a2e8de8d6 # MD5 57c0fd6dc79db3bedb2238eaa22a9e8e
TypeValueNote
sha256 3e0f36140d18878db89c424c6c0293710523c9973bcf5b64f81bc26a2e8de8d6 Sample:MassLogger
md5 57c0fd6dc79db3bedb2238eaa22a9e8e Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi