MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25679582e012802adcffa4d96ba0ae9a7138f771aeeb76f858ed5af09ff94e45f94
MD5cade65133bfecdf1d6da5638141a4306
File Typebat
Size144.9 KB
First Seen2026-04-20
File NameRFQ - Purchase Order #POTT40494820.bat
Tagsbat, 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: 79582e012802adcffa4d96ba0ae9a7138f771aeeb76f858ed5af09ff94e45f94
  • MD5: cade65133bfecdf1d6da5638141a4306

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: 79582e012802adcf"
        threat_level = "medium"
        first_seen = "2026-04-20"
    condition:
        hash.sha256(0, filesize) == "79582e012802adcffa4d96ba0ae9a7138f771aeeb76f858ed5af09ff94e45f94"
}

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 79582e012802adcffa4d96ba0ae9a7138f771aeeb76f858ed5af09ff94e45f94 # MD5 cade65133bfecdf1d6da5638141a4306
TypeValueNote
sha256 79582e012802adcffa4d96ba0ae9a7138f771aeeb76f858ed5af09ff94e45f94 Sample:MassLogger
md5 cade65133bfecdf1d6da5638141a4306 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi