MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256ece04990c944c877099c08374ec038906e2195c847db7231061bb5a1f51e392a
MD5a5b7ad3f9be56ecb4577f17ed29bc191
File Typeexe
Size509.0 KB
First Seen2025-06-10
File Nameece04990c944c877099c08374ec038906e2195c847db7231061bb5a1f51e392a
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: ece04990c944c877099c08374ec038906e2195c847db7231061bb5a1f51e392a
  • MD5: a5b7ad3f9be56ecb4577f17ed29bc191

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: ece04990c944c877"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "ece04990c944c877099c08374ec038906e2195c847db7231061bb5a1f51e392a"
}

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 ece04990c944c877099c08374ec038906e2195c847db7231061bb5a1f51e392a # MD5 a5b7ad3f9be56ecb4577f17ed29bc191
TypeValueNote
sha256 ece04990c944c877099c08374ec038906e2195c847db7231061bb5a1f51e392a Sample:MassLogger
md5 a5b7ad3f9be56ecb4577f17ed29bc191 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi