MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561439e036d8b04775d5462e7dbbb6e0b90e7668545f7ca5dae2aac74e84b184aa
MD5e112c8cfcb1776b6f91d536bc61badd7
File Typeexe
Size891.5 KB
First Seen2026-02-26
File NameELBA ODÖKSAN ŞUBE SATINALMA FİYAT TEKLİF FORMU_xlsx.exe
Tagsexe, geo, MassLogger, TUR

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: 1439e036d8b04775d5462e7dbbb6e0b90e7668545f7ca5dae2aac74e84b184aa
  • MD5: e112c8cfcb1776b6f91d536bc61badd7

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: 1439e036d8b04775"
        threat_level = "medium"
        first_seen = "2026-02-26"
    condition:
        hash.sha256(0, filesize) == "1439e036d8b04775d5462e7dbbb6e0b90e7668545f7ca5dae2aac74e84b184aa"
}

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 1439e036d8b04775d5462e7dbbb6e0b90e7668545f7ca5dae2aac74e84b184aa # MD5 e112c8cfcb1776b6f91d536bc61badd7
TypeValueNote
sha256 1439e036d8b04775d5462e7dbbb6e0b90e7668545f7ca5dae2aac74e84b184aa Sample:MassLogger
md5 e112c8cfcb1776b6f91d536bc61badd7 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi