MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256d78b1315a596c3424ed01722ea7d1370180affa97474a8a4fd55b1bb012c8411
MD5101ef9a25691f0f674c0a08ac7770070
File Typeexe
Size523.0 KB
First Seen2025-09-05
File Named78b1315a596c3424ed01722ea7d1370180affa97474a8a4fd55b1bb012c8411
Tagsexe, MassLogger

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: d78b1315a596c3424ed01722ea7d1370180affa97474a8a4fd55b1bb012c8411
  • MD5: 101ef9a25691f0f674c0a08ac7770070

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: d78b1315a596c342"
        threat_level = "medium"
        first_seen = "2025-09-05"
    condition:
        hash.sha256(0, filesize) == "d78b1315a596c3424ed01722ea7d1370180affa97474a8a4fd55b1bb012c8411"
}

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 d78b1315a596c3424ed01722ea7d1370180affa97474a8a4fd55b1bb012c8411 # MD5 101ef9a25691f0f674c0a08ac7770070
TypeValueNote
sha256 d78b1315a596c3424ed01722ea7d1370180affa97474a8a4fd55b1bb012c8411 Sample:MassLogger
md5 101ef9a25691f0f674c0a08ac7770070 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi