MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a33a1cc44de644f4606244fe1896aae06f65e2e86a569496066918ab190ad465
MD5443a56720faf5b6c2ed746edd71f7abf
File Typevbs
Size16.0 KB
First Seen2025-09-16
File Namerockkk9980.vbs
TagsMassLogger, vbs

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: a33a1cc44de644f4606244fe1896aae06f65e2e86a569496066918ab190ad465
  • MD5: 443a56720faf5b6c2ed746edd71f7abf

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: a33a1cc44de644f4"
        threat_level = "medium"
        first_seen = "2025-09-16"
    condition:
        hash.sha256(0, filesize) == "a33a1cc44de644f4606244fe1896aae06f65e2e86a569496066918ab190ad465"
}

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 a33a1cc44de644f4606244fe1896aae06f65e2e86a569496066918ab190ad465 # MD5 443a56720faf5b6c2ed746edd71f7abf
TypeValueNote
sha256 a33a1cc44de644f4606244fe1896aae06f65e2e86a569496066918ab190ad465 Sample:MassLogger
md5 443a56720faf5b6c2ed746edd71f7abf Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi