MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568e33031d852b1f61207822e473ba7f2aa4de3dca1e4deba779ef22a1d86dee2b
MD523caefa65d63240a52e8f92c8c7f6c25
File Typerar
Size519.3 KB
First Seen2025-06-22
File NameNEW PO 32300337.r15
TagsMassLogger, r15, rar

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: 8e33031d852b1f61207822e473ba7f2aa4de3dca1e4deba779ef22a1d86dee2b
  • MD5: 23caefa65d63240a52e8f92c8c7f6c25

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: 8e33031d852b1f61"
        threat_level = "medium"
        first_seen = "2025-06-22"
    condition:
        hash.sha256(0, filesize) == "8e33031d852b1f61207822e473ba7f2aa4de3dca1e4deba779ef22a1d86dee2b"
}

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 8e33031d852b1f61207822e473ba7f2aa4de3dca1e4deba779ef22a1d86dee2b # MD5 23caefa65d63240a52e8f92c8c7f6c25
TypeValueNote
sha256 8e33031d852b1f61207822e473ba7f2aa4de3dca1e4deba779ef22a1d86dee2b Sample:MassLogger
md5 23caefa65d63240a52e8f92c8c7f6c25 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi