MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256be2b7ad86e35116cc79f4c25e67c6b1a511e5704e4cfc35e128da566c838b96b
MD54249099e46354a965317f3590458d8ee
File Typeexe
Size1267.5 KB
First Seen2025-10-28
File NameInvoice Payment Remittance.exe
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: be2b7ad86e35116cc79f4c25e67c6b1a511e5704e4cfc35e128da566c838b96b
  • MD5: 4249099e46354a965317f3590458d8ee

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: be2b7ad86e35116c"
        threat_level = "medium"
        first_seen = "2025-10-28"
    condition:
        hash.sha256(0, filesize) == "be2b7ad86e35116cc79f4c25e67c6b1a511e5704e4cfc35e128da566c838b96b"
}

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 be2b7ad86e35116cc79f4c25e67c6b1a511e5704e4cfc35e128da566c838b96b # MD5 4249099e46354a965317f3590458d8ee
TypeValueNote
sha256 be2b7ad86e35116cc79f4c25e67c6b1a511e5704e4cfc35e128da566c838b96b Sample:MassLogger
md5 4249099e46354a965317f3590458d8ee Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi