MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2563b31e89821f5a99222d0a6210b8452897900b8c0929e5cf859cbb8c837792966
MD57cb6cd189c80f1e69cdb145165d5e117
File Typeexe
Size565.5 KB
First Seen2025-08-12
File Name3b31e89821f5a99222d0a6210b8452897900b8c0929e5cf859cbb8c837792966
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: 3b31e89821f5a99222d0a6210b8452897900b8c0929e5cf859cbb8c837792966
  • MD5: 7cb6cd189c80f1e69cdb145165d5e117

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: 3b31e89821f5a992"
        threat_level = "medium"
        first_seen = "2025-08-12"
    condition:
        hash.sha256(0, filesize) == "3b31e89821f5a99222d0a6210b8452897900b8c0929e5cf859cbb8c837792966"
}

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 3b31e89821f5a99222d0a6210b8452897900b8c0929e5cf859cbb8c837792966 # MD5 7cb6cd189c80f1e69cdb145165d5e117
TypeValueNote
sha256 3b31e89821f5a99222d0a6210b8452897900b8c0929e5cf859cbb8c837792966 Sample:MassLogger
md5 7cb6cd189c80f1e69cdb145165d5e117 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi