MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564549466f115ec3729f7a4cdd5b1d8d535e7ff2e153307fa3ae502b71d6170846
MD531bdd6d70c7886ef2fffd9a9c2ab5244
File Typevbs
Size1128.3 KB
First Seen2026-02-18
File Name1103170226.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: 4549466f115ec3729f7a4cdd5b1d8d535e7ff2e153307fa3ae502b71d6170846
  • MD5: 31bdd6d70c7886ef2fffd9a9c2ab5244

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: 4549466f115ec372"
        threat_level = "medium"
        first_seen = "2026-02-18"
    condition:
        hash.sha256(0, filesize) == "4549466f115ec3729f7a4cdd5b1d8d535e7ff2e153307fa3ae502b71d6170846"
}

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 4549466f115ec3729f7a4cdd5b1d8d535e7ff2e153307fa3ae502b71d6170846 # MD5 31bdd6d70c7886ef2fffd9a9c2ab5244
TypeValueNote
sha256 4549466f115ec3729f7a4cdd5b1d8d535e7ff2e153307fa3ae502b71d6170846 Sample:MassLogger
md5 31bdd6d70c7886ef2fffd9a9c2ab5244 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi