MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a8beee89eb72948b3fd255c6a1f5bab0300161aa0e32ba0aaffe5653b75111d0
MD53f1ea031012dd9570640ac2d73ab63f2
File Typeexe
Size1265.3 KB
First Seen2026-05-21
File NamePDF_EGYTVR_GROUPRFQ#2126183FOB.exe
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: a8beee89eb72948b3fd255c6a1f5bab0300161aa0e32ba0aaffe5653b75111d0
  • MD5: 3f1ea031012dd9570640ac2d73ab63f2

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: a8beee89eb72948b"
        threat_level = "medium"
        first_seen = "2026-05-21"
    condition:
        hash.sha256(0, filesize) == "a8beee89eb72948b3fd255c6a1f5bab0300161aa0e32ba0aaffe5653b75111d0"
}

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 a8beee89eb72948b3fd255c6a1f5bab0300161aa0e32ba0aaffe5653b75111d0 # MD5 3f1ea031012dd9570640ac2d73ab63f2
TypeValueNote
sha256 a8beee89eb72948b3fd255c6a1f5bab0300161aa0e32ba0aaffe5653b75111d0 Sample:MassLogger
md5 3f1ea031012dd9570640ac2d73ab63f2 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi