MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25600181f3297555dab913f5777fc7823c4882929ee81cb52430d19714b8fa85734
MD542d7b10af0014ca355acdfd45230abcf
File Typeexe
Size787.5 KB
First Seen2025-06-12
File NameH7vvgwMxJG6BXtw.exe
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: 00181f3297555dab913f5777fc7823c4882929ee81cb52430d19714b8fa85734
  • MD5: 42d7b10af0014ca355acdfd45230abcf

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: 00181f3297555dab"
        threat_level = "medium"
        first_seen = "2025-06-12"
    condition:
        hash.sha256(0, filesize) == "00181f3297555dab913f5777fc7823c4882929ee81cb52430d19714b8fa85734"
}

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 00181f3297555dab913f5777fc7823c4882929ee81cb52430d19714b8fa85734 # MD5 42d7b10af0014ca355acdfd45230abcf
TypeValueNote
sha256 00181f3297555dab913f5777fc7823c4882929ee81cb52430d19714b8fa85734 Sample:MassLogger
md5 42d7b10af0014ca355acdfd45230abcf Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi