MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567ea49b7812d281d4e2154bd9dfe71d5a7fa9069606f778a15ade89b34ebc702d
MD50dc333ecac7672c8ecd7624dc2b71d3d
File Typevbe
Size544.1 KB
First Seen2025-10-14
File Namerrrk390.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: 7ea49b7812d281d4e2154bd9dfe71d5a7fa9069606f778a15ade89b34ebc702d
  • MD5: 0dc333ecac7672c8ecd7624dc2b71d3d

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: 7ea49b7812d281d4"
        threat_level = "medium"
        first_seen = "2025-10-14"
    condition:
        hash.sha256(0, filesize) == "7ea49b7812d281d4e2154bd9dfe71d5a7fa9069606f778a15ade89b34ebc702d"
}

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 7ea49b7812d281d4e2154bd9dfe71d5a7fa9069606f778a15ade89b34ebc702d # MD5 0dc333ecac7672c8ecd7624dc2b71d3d
TypeValueNote
sha256 7ea49b7812d281d4e2154bd9dfe71d5a7fa9069606f778a15ade89b34ebc702d Sample:MassLogger
md5 0dc333ecac7672c8ecd7624dc2b71d3d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi