MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565dd69980b72c03245247d9e08c83d39975c3ab723135d9ce0fef44a961c4865c
MD5305625cf15c8d9bbdd2ae0b2ae8628b5
File Typevbe
Size969.1 KB
First Seen2025-08-01
File Nameroc776450032.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: 5dd69980b72c03245247d9e08c83d39975c3ab723135d9ce0fef44a961c4865c
  • MD5: 305625cf15c8d9bbdd2ae0b2ae8628b5

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: 5dd69980b72c0324"
        threat_level = "medium"
        first_seen = "2025-08-01"
    condition:
        hash.sha256(0, filesize) == "5dd69980b72c03245247d9e08c83d39975c3ab723135d9ce0fef44a961c4865c"
}

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 5dd69980b72c03245247d9e08c83d39975c3ab723135d9ce0fef44a961c4865c # MD5 305625cf15c8d9bbdd2ae0b2ae8628b5
TypeValueNote
sha256 5dd69980b72c03245247d9e08c83d39975c3ab723135d9ce0fef44a961c4865c Sample:MassLogger
md5 305625cf15c8d9bbdd2ae0b2ae8628b5 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi