MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25669b63b9065d7e2add8b694901bd6c306db94c5617ac9c94fd4a9d05471b23404
MD54898245f8fa335da7a2c2d7c25affcb0
File Typevbe
Size822.0 KB
First Seen2025-10-22
File NameTEKLIF_0001021.VBE
Tagsgeo, MassLogger, TUR, vbe

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: 69b63b9065d7e2add8b694901bd6c306db94c5617ac9c94fd4a9d05471b23404
  • MD5: 4898245f8fa335da7a2c2d7c25affcb0

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: 69b63b9065d7e2ad"
        threat_level = "medium"
        first_seen = "2025-10-22"
    condition:
        hash.sha256(0, filesize) == "69b63b9065d7e2add8b694901bd6c306db94c5617ac9c94fd4a9d05471b23404"
}

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 69b63b9065d7e2add8b694901bd6c306db94c5617ac9c94fd4a9d05471b23404 # MD5 4898245f8fa335da7a2c2d7c25affcb0
TypeValueNote
sha256 69b63b9065d7e2add8b694901bd6c306db94c5617ac9c94fd4a9d05471b23404 Sample:MassLogger
md5 4898245f8fa335da7a2c2d7c25affcb0 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi