MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25638d3e0bf0cb43d7da923db222fbe59faf4de15267103350b869ef2a692a89893
MD592121e3b048b2806b28018e8af28dd30
File Typeexe
Size931.5 KB
First Seen2025-06-10
File Name38d3e0bf0cb43d7da923db222fbe59faf4de15267103350b869ef2a692a89893
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: 38d3e0bf0cb43d7da923db222fbe59faf4de15267103350b869ef2a692a89893
  • MD5: 92121e3b048b2806b28018e8af28dd30

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: 38d3e0bf0cb43d7d"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "38d3e0bf0cb43d7da923db222fbe59faf4de15267103350b869ef2a692a89893"
}

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 38d3e0bf0cb43d7da923db222fbe59faf4de15267103350b869ef2a692a89893 # MD5 92121e3b048b2806b28018e8af28dd30
TypeValueNote
sha256 38d3e0bf0cb43d7da923db222fbe59faf4de15267103350b869ef2a692a89893 Sample:MassLogger
md5 92121e3b048b2806b28018e8af28dd30 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi