MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25617d70d796220ac7bef6a22366d01799a94ac7d2e71f8d7fc5e591e02763ed04d
MD53314345f2f7a50789c3790b1e6e86d7f
File Typeexe
Size557.0 KB
First Seen2025-07-07
File Name17d70d796220ac7bef6a22366d01799a94ac7d2e71f8d7fc5e591e02763ed04d
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: 17d70d796220ac7bef6a22366d01799a94ac7d2e71f8d7fc5e591e02763ed04d
  • MD5: 3314345f2f7a50789c3790b1e6e86d7f

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: 17d70d796220ac7b"
        threat_level = "medium"
        first_seen = "2025-07-07"
    condition:
        hash.sha256(0, filesize) == "17d70d796220ac7bef6a22366d01799a94ac7d2e71f8d7fc5e591e02763ed04d"
}

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 17d70d796220ac7bef6a22366d01799a94ac7d2e71f8d7fc5e591e02763ed04d # MD5 3314345f2f7a50789c3790b1e6e86d7f
TypeValueNote
sha256 17d70d796220ac7bef6a22366d01799a94ac7d2e71f8d7fc5e591e02763ed04d Sample:MassLogger
md5 3314345f2f7a50789c3790b1e6e86d7f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi