MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568285d94bc15b8fdab803524e035c4774695c432876c9e2ff424937855a414e9d
MD5b749ccc7c70ec436260495699742e0eb
File Typevbe
Size544.1 KB
First Seen2025-10-10
File Namerrk899c3.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: 8285d94bc15b8fdab803524e035c4774695c432876c9e2ff424937855a414e9d
  • MD5: b749ccc7c70ec436260495699742e0eb

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: 8285d94bc15b8fda"
        threat_level = "medium"
        first_seen = "2025-10-10"
    condition:
        hash.sha256(0, filesize) == "8285d94bc15b8fdab803524e035c4774695c432876c9e2ff424937855a414e9d"
}

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 8285d94bc15b8fdab803524e035c4774695c432876c9e2ff424937855a414e9d # MD5 b749ccc7c70ec436260495699742e0eb
TypeValueNote
sha256 8285d94bc15b8fdab803524e035c4774695c432876c9e2ff424937855a414e9d Sample:MassLogger
md5 b749ccc7c70ec436260495699742e0eb Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi