MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256cb98b52355997143aa33a24306371f6934663c391252afd2fb1a841d552475cb
MD5ce583f9dc1baaa799fa3d680630dab3b
File Typevbe
Size986.1 KB
First Seen2025-08-21
File Namerok9980432.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: cb98b52355997143aa33a24306371f6934663c391252afd2fb1a841d552475cb
  • MD5: ce583f9dc1baaa799fa3d680630dab3b

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: cb98b52355997143"
        threat_level = "medium"
        first_seen = "2025-08-21"
    condition:
        hash.sha256(0, filesize) == "cb98b52355997143aa33a24306371f6934663c391252afd2fb1a841d552475cb"
}

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 cb98b52355997143aa33a24306371f6934663c391252afd2fb1a841d552475cb # MD5 ce583f9dc1baaa799fa3d680630dab3b
TypeValueNote
sha256 cb98b52355997143aa33a24306371f6934663c391252afd2fb1a841d552475cb Sample:MassLogger
md5 ce583f9dc1baaa799fa3d680630dab3b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi