MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256c9eced1547b23d7cf12851c99eb1d4d8e074ed39588fa270b6d8ada65c3543f9
MD50271305721bbf235c591fc52a5e3ba29
File Typevbs
Size188.0 KB
First Seen2025-07-22
File Namesales inquiry.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: c9eced1547b23d7cf12851c99eb1d4d8e074ed39588fa270b6d8ada65c3543f9
  • MD5: 0271305721bbf235c591fc52a5e3ba29

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: c9eced1547b23d7c"
        threat_level = "medium"
        first_seen = "2025-07-22"
    condition:
        hash.sha256(0, filesize) == "c9eced1547b23d7cf12851c99eb1d4d8e074ed39588fa270b6d8ada65c3543f9"
}

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 c9eced1547b23d7cf12851c99eb1d4d8e074ed39588fa270b6d8ada65c3543f9 # MD5 0271305721bbf235c591fc52a5e3ba29
TypeValueNote
sha256 c9eced1547b23d7cf12851c99eb1d4d8e074ed39588fa270b6d8ada65c3543f9 Sample:MassLogger
md5 0271305721bbf235c591fc52a5e3ba29 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi