MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565bb0effe85ce6e2aa2cee72b5a33d76de1ca198101a1b8359e8aebc5dd303d0f
MD5a2fd6eeeb78cf1290cc6158379b1efd7
File Typevbe
Size975.0 KB
First Seen2025-08-07
File Namee-dekont.pdf.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: 5bb0effe85ce6e2aa2cee72b5a33d76de1ca198101a1b8359e8aebc5dd303d0f
  • MD5: a2fd6eeeb78cf1290cc6158379b1efd7

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: 5bb0effe85ce6e2a"
        threat_level = "medium"
        first_seen = "2025-08-07"
    condition:
        hash.sha256(0, filesize) == "5bb0effe85ce6e2aa2cee72b5a33d76de1ca198101a1b8359e8aebc5dd303d0f"
}

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 5bb0effe85ce6e2aa2cee72b5a33d76de1ca198101a1b8359e8aebc5dd303d0f # MD5 a2fd6eeeb78cf1290cc6158379b1efd7
TypeValueNote
sha256 5bb0effe85ce6e2aa2cee72b5a33d76de1ca198101a1b8359e8aebc5dd303d0f Sample:MassLogger
md5 a2fd6eeeb78cf1290cc6158379b1efd7 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi