MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256687377bb1fda89213fff88cb1b2ce70a25613f37a346d4c69af712e475d49ab2
MD500767699664d7317790c313d78b41f41
File Typevbs
Size16.4 KB
First Seen2025-09-29
File NameSİPARİŞ _2909.vbs
Tagsgeo, MassLogger, TUR, vbs

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: 687377bb1fda89213fff88cb1b2ce70a25613f37a346d4c69af712e475d49ab2
  • MD5: 00767699664d7317790c313d78b41f41

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: 687377bb1fda8921"
        threat_level = "medium"
        first_seen = "2025-09-29"
    condition:
        hash.sha256(0, filesize) == "687377bb1fda89213fff88cb1b2ce70a25613f37a346d4c69af712e475d49ab2"
}

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 687377bb1fda89213fff88cb1b2ce70a25613f37a346d4c69af712e475d49ab2 # MD5 00767699664d7317790c313d78b41f41
TypeValueNote
sha256 687377bb1fda89213fff88cb1b2ce70a25613f37a346d4c69af712e475d49ab2 Sample:MassLogger
md5 00767699664d7317790c313d78b41f41 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi