MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568442cf5d1f7e4b3922a849215c150c290bda0cc3679e25223b68f95375307386
MD5dda7482b416285800d108e7b549eb749
File Typeexe
Size868.5 KB
First Seen2025-08-22
File NameSecuriteInfo.com.Win32.MalwareX-gen.71663423
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: 8442cf5d1f7e4b3922a849215c150c290bda0cc3679e25223b68f95375307386
  • MD5: dda7482b416285800d108e7b549eb749

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: 8442cf5d1f7e4b39"
        threat_level = "medium"
        first_seen = "2025-08-22"
    condition:
        hash.sha256(0, filesize) == "8442cf5d1f7e4b3922a849215c150c290bda0cc3679e25223b68f95375307386"
}

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 8442cf5d1f7e4b3922a849215c150c290bda0cc3679e25223b68f95375307386 # MD5 dda7482b416285800d108e7b549eb749
TypeValueNote
sha256 8442cf5d1f7e4b3922a849215c150c290bda0cc3679e25223b68f95375307386 Sample:MassLogger
md5 dda7482b416285800d108e7b549eb749 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi