MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a09d1ffa7c3d05936f59fd6bd5ca394616376b4dc708512a3c535e2f5f9073bb
MD50e7ddf25756d6100e8f39b6bfadd8fdc
File Typeexe
Size2929.0 KB
First Seen2025-08-29
File Namertinfo.dll
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: a09d1ffa7c3d05936f59fd6bd5ca394616376b4dc708512a3c535e2f5f9073bb
  • MD5: 0e7ddf25756d6100e8f39b6bfadd8fdc

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: a09d1ffa7c3d0593"
        threat_level = "medium"
        first_seen = "2025-08-29"
    condition:
        hash.sha256(0, filesize) == "a09d1ffa7c3d05936f59fd6bd5ca394616376b4dc708512a3c535e2f5f9073bb"
}

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 a09d1ffa7c3d05936f59fd6bd5ca394616376b4dc708512a3c535e2f5f9073bb # MD5 0e7ddf25756d6100e8f39b6bfadd8fdc
TypeValueNote
sha256 a09d1ffa7c3d05936f59fd6bd5ca394616376b4dc708512a3c535e2f5f9073bb Sample:MassLogger
md5 0e7ddf25756d6100e8f39b6bfadd8fdc Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi