MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256675f998f05122297911f440e19e1cd4fe80b0a8967a01b561c0748684eea638d
MD5937fb44b88747a998ae7cb8b40746d99
File Typevbe
Size966.8 KB
First Seen2025-07-01
File Namerrkkit8859974.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: 675f998f05122297911f440e19e1cd4fe80b0a8967a01b561c0748684eea638d
  • MD5: 937fb44b88747a998ae7cb8b40746d99

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: 675f998f05122297"
        threat_level = "medium"
        first_seen = "2025-07-01"
    condition:
        hash.sha256(0, filesize) == "675f998f05122297911f440e19e1cd4fe80b0a8967a01b561c0748684eea638d"
}

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 675f998f05122297911f440e19e1cd4fe80b0a8967a01b561c0748684eea638d # MD5 937fb44b88747a998ae7cb8b40746d99
TypeValueNote
sha256 675f998f05122297911f440e19e1cd4fe80b0a8967a01b561c0748684eea638d Sample:MassLogger
md5 937fb44b88747a998ae7cb8b40746d99 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi