MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256d3da06e29ed7b2fe2c4441b94805205bf0667d39a6c7b834899d73102d884f50
MD5b01b842aa8626ab4ba0738002c3f972b
File Typexlsx
Size2288.0 KB
First Seen2025-09-02
File NamePO_Campilex_2025-09-02.xlam
TagsCVE-2017-11882, MassLogger, xlam, xlsx

Malware Family: MassLogger

MassLogger, email keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: d3da06e29ed7b2fe2c4441b94805205bf0667d39a6c7b834899d73102d884f50
  • MD5: b01b842aa8626ab4ba0738002c3f972b

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: d3da06e29ed7b2fe"
        threat_level = "medium"
        first_seen = "2025-09-02"
    condition:
        hash.sha256(0, filesize) == "d3da06e29ed7b2fe2c4441b94805205bf0667d39a6c7b834899d73102d884f50"
}

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 d3da06e29ed7b2fe2c4441b94805205bf0667d39a6c7b834899d73102d884f50 # MD5 b01b842aa8626ab4ba0738002c3f972b
TypeValueNote
sha256 d3da06e29ed7b2fe2c4441b94805205bf0667d39a6c7b834899d73102d884f50 Sample:MassLogger
md5 b01b842aa8626ab4ba0738002c3f972b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi