MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2562042cba27d11b2481f4f1cfbd370fb5c30094bc553fbdd8845438aa4e0b39b01
MD50859b8c36a12546022fd3436db822d83
File Typeexe
Size520.5 KB
First Seen2025-06-10
File Name2042cba27d11b2481f4f1cfbd370fb5c30094bc553fbdd8845438aa4e0b39b01
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: 2042cba27d11b2481f4f1cfbd370fb5c30094bc553fbdd8845438aa4e0b39b01
  • MD5: 0859b8c36a12546022fd3436db822d83

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: 2042cba27d11b248"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "2042cba27d11b2481f4f1cfbd370fb5c30094bc553fbdd8845438aa4e0b39b01"
}

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 2042cba27d11b2481f4f1cfbd370fb5c30094bc553fbdd8845438aa4e0b39b01 # MD5 0859b8c36a12546022fd3436db822d83
TypeValueNote
sha256 2042cba27d11b2481f4f1cfbd370fb5c30094bc553fbdd8845438aa4e0b39b01 Sample:MassLogger
md5 0859b8c36a12546022fd3436db822d83 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi