MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561f49effe122ada5b31856c5f3f9a230786fc267f65527fe9199820aa6e547237
MD5a5f650821279037719da7af43b28186a
File Typevbs
Size1549.6 KB
First Seen2026-06-15
File NameOrden de compra_26452.pdf.vbs
Tagsexe, MassLogger, vbs

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 1f49effe122ada5b31856c5f3f9a230786fc267f65527fe9199820aa6e547237
  • MD5: a5f650821279037719da7af43b28186a

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: 1f49effe122ada5b"
        threat_level = "medium"
        first_seen = "2026-06-15"
    condition:
        hash.sha256(0, filesize) == "1f49effe122ada5b31856c5f3f9a230786fc267f65527fe9199820aa6e547237"
}

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 1f49effe122ada5b31856c5f3f9a230786fc267f65527fe9199820aa6e547237 # MD5 a5f650821279037719da7af43b28186a
TypeValueNote
sha256 1f49effe122ada5b31856c5f3f9a230786fc267f65527fe9199820aa6e547237 Sample:MassLogger
md5 a5f650821279037719da7af43b28186a Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi