MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564293ecdedb5d66bf2cdc4e103dedac3352c5d0a8e8412eeeea4f2ed5061665b9
MD51d9ba34289b27f4c7dcff61ac86cb819
File Typeexe
Size952.0 KB
First Seen2025-07-22
File NameDHL Air Waybill #6820287350000-PDF.exe
TagsDHL, exe, 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: 4293ecdedb5d66bf2cdc4e103dedac3352c5d0a8e8412eeeea4f2ed5061665b9
  • MD5: 1d9ba34289b27f4c7dcff61ac86cb819

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: 4293ecdedb5d66bf"
        threat_level = "medium"
        first_seen = "2025-07-22"
    condition:
        hash.sha256(0, filesize) == "4293ecdedb5d66bf2cdc4e103dedac3352c5d0a8e8412eeeea4f2ed5061665b9"
}

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 4293ecdedb5d66bf2cdc4e103dedac3352c5d0a8e8412eeeea4f2ed5061665b9 # MD5 1d9ba34289b27f4c7dcff61ac86cb819
TypeValueNote
sha256 4293ecdedb5d66bf2cdc4e103dedac3352c5d0a8e8412eeeea4f2ed5061665b9 Sample:MassLogger
md5 1d9ba34289b27f4c7dcff61ac86cb819 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi