MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569b2f0adbfc30957fa1e5c694b77b578ded30da538e9d1b83968aef581af3e4a6
MD5be4a5ad28212b677a1dc11ba86159fad
File Typeexe
Size1166.5 KB
First Seen2025-08-12
File Name9b2f0adbfc30957fa1e5c694b77b578ded30da538e9d1b83968aef581af3e4a6
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: 9b2f0adbfc30957fa1e5c694b77b578ded30da538e9d1b83968aef581af3e4a6
  • MD5: be4a5ad28212b677a1dc11ba86159fad

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: 9b2f0adbfc30957f"
        threat_level = "medium"
        first_seen = "2025-08-12"
    condition:
        hash.sha256(0, filesize) == "9b2f0adbfc30957fa1e5c694b77b578ded30da538e9d1b83968aef581af3e4a6"
}

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 9b2f0adbfc30957fa1e5c694b77b578ded30da538e9d1b83968aef581af3e4a6 # MD5 be4a5ad28212b677a1dc11ba86159fad
TypeValueNote
sha256 9b2f0adbfc30957fa1e5c694b77b578ded30da538e9d1b83968aef581af3e4a6 Sample:MassLogger
md5 be4a5ad28212b677a1dc11ba86159fad Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi