MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256b590c146e143027205b94d5e5136f5a623f32b28ff3156c6ee14c899cd4cb8c8
MD54ac5adeb7c7c5f63960c5f3561dbab28
File Typeexe
Size802.0 KB
First Seen2026-03-06
File Nameb590c146e143027205b94d5e5136f5a623f32b28ff3156c6ee14c899cd4cb8c8
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: b590c146e143027205b94d5e5136f5a623f32b28ff3156c6ee14c899cd4cb8c8
  • MD5: 4ac5adeb7c7c5f63960c5f3561dbab28

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: b590c146e1430272"
        threat_level = "medium"
        first_seen = "2026-03-06"
    condition:
        hash.sha256(0, filesize) == "b590c146e143027205b94d5e5136f5a623f32b28ff3156c6ee14c899cd4cb8c8"
}

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 b590c146e143027205b94d5e5136f5a623f32b28ff3156c6ee14c899cd4cb8c8 # MD5 4ac5adeb7c7c5f63960c5f3561dbab28
TypeValueNote
sha256 b590c146e143027205b94d5e5136f5a623f32b28ff3156c6ee14c899cd4cb8c8 Sample:MassLogger
md5 4ac5adeb7c7c5f63960c5f3561dbab28 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi