MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25682453da04a3618eede4ec065f24f8e3e4e0c120072e659a6edf23eb7a7933a84
MD5136bf3c7e32b4f94d18241ba0c54105f
File Typeexe
Size848.5 KB
First Seen2025-09-11
File NameSecuriteInfo.com.Win32.MalwareX-gen.24643719
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: 82453da04a3618eede4ec065f24f8e3e4e0c120072e659a6edf23eb7a7933a84
  • MD5: 136bf3c7e32b4f94d18241ba0c54105f

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: 82453da04a3618ee"
        threat_level = "medium"
        first_seen = "2025-09-11"
    condition:
        hash.sha256(0, filesize) == "82453da04a3618eede4ec065f24f8e3e4e0c120072e659a6edf23eb7a7933a84"
}

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 82453da04a3618eede4ec065f24f8e3e4e0c120072e659a6edf23eb7a7933a84 # MD5 136bf3c7e32b4f94d18241ba0c54105f
TypeValueNote
sha256 82453da04a3618eede4ec065f24f8e3e4e0c120072e659a6edf23eb7a7933a84 Sample:MassLogger
md5 136bf3c7e32b4f94d18241ba0c54105f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi