MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25683cab8a2620a4e0b6e86d35b41932d4ba0d29383a34f1a07b9e23dfd27240e21
MD5bfbdf13c6ba8dfdc15e21dcd10b21513
File Type7z
Size1.2 KB
First Seen2026-05-20
File NameDHLXReciept.7z
Tags7z, MassLogger

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: 83cab8a2620a4e0b6e86d35b41932d4ba0d29383a34f1a07b9e23dfd27240e21
  • MD5: bfbdf13c6ba8dfdc15e21dcd10b21513

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: 83cab8a2620a4e0b"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "83cab8a2620a4e0b6e86d35b41932d4ba0d29383a34f1a07b9e23dfd27240e21"
}

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 83cab8a2620a4e0b6e86d35b41932d4ba0d29383a34f1a07b9e23dfd27240e21 # MD5 bfbdf13c6ba8dfdc15e21dcd10b21513
TypeValueNote
sha256 83cab8a2620a4e0b6e86d35b41932d4ba0d29383a34f1a07b9e23dfd27240e21 Sample:MassLogger
md5 bfbdf13c6ba8dfdc15e21dcd10b21513 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi