MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567816e31c07296613302f64479a20f8089f8d83e31330a476310e25f14228702e
MD5c5ef9dac0efcfae614b85865e449f71f
File Typeexe
Size1099.0 KB
First Seen2026-06-08
File Name7816e31c07296613302f64479a20f8089f8d83e31330a476310e25f14228702e
Tagsexe, 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: 7816e31c07296613302f64479a20f8089f8d83e31330a476310e25f14228702e
  • MD5: c5ef9dac0efcfae614b85865e449f71f

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: 7816e31c07296613"
        threat_level = "medium"
        first_seen = "2026-06-08"
    condition:
        hash.sha256(0, filesize) == "7816e31c07296613302f64479a20f8089f8d83e31330a476310e25f14228702e"
}

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 7816e31c07296613302f64479a20f8089f8d83e31330a476310e25f14228702e # MD5 c5ef9dac0efcfae614b85865e449f71f
TypeValueNote
sha256 7816e31c07296613302f64479a20f8089f8d83e31330a476310e25f14228702e Sample:MassLogger
md5 c5ef9dac0efcfae614b85865e449f71f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi