MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256bd50ea97aeed23c603c272f3fb237063553cf2a1fd09582b2115f6d7702acc9b
MD56a4dabbe083d288339ece1a271914ff4
File Typevbe
Size1247.1 KB
First Seen2025-11-25
File NameCF N°6100.vbe
TagsMassLogger, 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: bd50ea97aeed23c603c272f3fb237063553cf2a1fd09582b2115f6d7702acc9b
  • MD5: 6a4dabbe083d288339ece1a271914ff4

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: bd50ea97aeed23c6"
        threat_level = "medium"
        first_seen = "2025-11-25"
    condition:
        hash.sha256(0, filesize) == "bd50ea97aeed23c603c272f3fb237063553cf2a1fd09582b2115f6d7702acc9b"
}

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 bd50ea97aeed23c603c272f3fb237063553cf2a1fd09582b2115f6d7702acc9b # MD5 6a4dabbe083d288339ece1a271914ff4
TypeValueNote
sha256 bd50ea97aeed23c603c272f3fb237063553cf2a1fd09582b2115f6d7702acc9b Sample:MassLogger
md5 6a4dabbe083d288339ece1a271914ff4 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi