MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a2d8949ed4991ab426157ba3d4646b06dd52e5a3fad19da967444bd11ac600a0
MD5904d23627a50699c1fcd2026321066b2
File Typeexe
Size984.5 KB
First Seen2026-06-08
File Namea2d8949ed4991ab426157ba3d4646b06dd52e5a3fad19da967444bd11ac600a0
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: a2d8949ed4991ab426157ba3d4646b06dd52e5a3fad19da967444bd11ac600a0
  • MD5: 904d23627a50699c1fcd2026321066b2

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: a2d8949ed4991ab4"
        threat_level = "medium"
        first_seen = "2026-06-08"
    condition:
        hash.sha256(0, filesize) == "a2d8949ed4991ab426157ba3d4646b06dd52e5a3fad19da967444bd11ac600a0"
}

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 a2d8949ed4991ab426157ba3d4646b06dd52e5a3fad19da967444bd11ac600a0 # MD5 904d23627a50699c1fcd2026321066b2
TypeValueNote
sha256 a2d8949ed4991ab426157ba3d4646b06dd52e5a3fad19da967444bd11ac600a0 Sample:MassLogger
md5 904d23627a50699c1fcd2026321066b2 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi