MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256da934e4afd2502f557b4a6e62393993708d9fa7fd45740e591b42a4d2f1ec498
MD5cf47658969a8188899f3424b4b777ee4
File Typevbs
Size147.1 KB
First Seen2025-07-08
File NameBalance payment.019906.vbs
TagsMassLogger, 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: da934e4afd2502f557b4a6e62393993708d9fa7fd45740e591b42a4d2f1ec498
  • MD5: cf47658969a8188899f3424b4b777ee4

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: da934e4afd2502f5"
        threat_level = "medium"
        first_seen = "2025-07-08"
    condition:
        hash.sha256(0, filesize) == "da934e4afd2502f557b4a6e62393993708d9fa7fd45740e591b42a4d2f1ec498"
}

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 da934e4afd2502f557b4a6e62393993708d9fa7fd45740e591b42a4d2f1ec498 # MD5 cf47658969a8188899f3424b4b777ee4
TypeValueNote
sha256 da934e4afd2502f557b4a6e62393993708d9fa7fd45740e591b42a4d2f1ec498 Sample:MassLogger
md5 cf47658969a8188899f3424b4b777ee4 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi