MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561d9735c8d10949ca2322708580e98dd28045e81bf2db6ac4769ffd1d16561438
MD51aa45a05a9163eac634a5717f1ed4b10
File Typebat
Size232.3 KB
First Seen2026-03-17
File NameINQ-RFQ-D-0022026.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: 1d9735c8d10949ca2322708580e98dd28045e81bf2db6ac4769ffd1d16561438
  • MD5: 1aa45a05a9163eac634a5717f1ed4b10

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: 1d9735c8d10949ca"
        threat_level = "medium"
        first_seen = "2026-03-17"
    condition:
        hash.sha256(0, filesize) == "1d9735c8d10949ca2322708580e98dd28045e81bf2db6ac4769ffd1d16561438"
}

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 1d9735c8d10949ca2322708580e98dd28045e81bf2db6ac4769ffd1d16561438 # MD5 1aa45a05a9163eac634a5717f1ed4b10
TypeValueNote
sha256 1d9735c8d10949ca2322708580e98dd28045e81bf2db6ac4769ffd1d16561438 Sample:MassLogger
md5 1aa45a05a9163eac634a5717f1ed4b10 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi