MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256248812accf82ca745dd93e7f825be990dec0dfdce44ec3e1d8475f523962fa5c
MD544f12568e269e12959a4ac4d91dcef87
File Typebat
Size122.1 KB
First Seen2026-04-27
File NameRequest for Quotation-BD00900M.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: 248812accf82ca745dd93e7f825be990dec0dfdce44ec3e1d8475f523962fa5c
  • MD5: 44f12568e269e12959a4ac4d91dcef87

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: 248812accf82ca74"
        threat_level = "medium"
        first_seen = "2026-04-27"
    condition:
        hash.sha256(0, filesize) == "248812accf82ca745dd93e7f825be990dec0dfdce44ec3e1d8475f523962fa5c"
}

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 248812accf82ca745dd93e7f825be990dec0dfdce44ec3e1d8475f523962fa5c # MD5 44f12568e269e12959a4ac4d91dcef87
TypeValueNote
sha256 248812accf82ca745dd93e7f825be990dec0dfdce44ec3e1d8475f523962fa5c Sample:MassLogger
md5 44f12568e269e12959a4ac4d91dcef87 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi