MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25670ffcccdedd4cbfce9d10e4bf42f9917f33c055ba2078b76976827f3d604ccfb
MD52ccb858aa9f1f1e8bb7ec02e44759acb
File Typeexe
Size774.5 KB
First Seen2025-09-03
File NameSecuriteInfo.com.Win32.MalwareX-gen.77598143
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: 70ffcccdedd4cbfce9d10e4bf42f9917f33c055ba2078b76976827f3d604ccfb
  • MD5: 2ccb858aa9f1f1e8bb7ec02e44759acb

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: 70ffcccdedd4cbfc"
        threat_level = "medium"
        first_seen = "2025-09-03"
    condition:
        hash.sha256(0, filesize) == "70ffcccdedd4cbfce9d10e4bf42f9917f33c055ba2078b76976827f3d604ccfb"
}

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 70ffcccdedd4cbfce9d10e4bf42f9917f33c055ba2078b76976827f3d604ccfb # MD5 2ccb858aa9f1f1e8bb7ec02e44759acb
TypeValueNote
sha256 70ffcccdedd4cbfce9d10e4bf42f9917f33c055ba2078b76976827f3d604ccfb Sample:MassLogger
md5 2ccb858aa9f1f1e8bb7ec02e44759acb Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi