MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f10dcedfa178a0bce77e909b072ff0deb66ab588db90b7f5eb3d0bbe8c75215b
MD5a317a8172a9fb03f888183a73b3ab2fe
File Typeexe
Size567.0 KB
First Seen2025-06-26
File Namez1ADIBMerchantServices-MSFChangeNotice260625.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: f10dcedfa178a0bce77e909b072ff0deb66ab588db90b7f5eb3d0bbe8c75215b
  • MD5: a317a8172a9fb03f888183a73b3ab2fe

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: f10dcedfa178a0bc"
        threat_level = "medium"
        first_seen = "2025-06-26"
    condition:
        hash.sha256(0, filesize) == "f10dcedfa178a0bce77e909b072ff0deb66ab588db90b7f5eb3d0bbe8c75215b"
}

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 f10dcedfa178a0bce77e909b072ff0deb66ab588db90b7f5eb3d0bbe8c75215b # MD5 a317a8172a9fb03f888183a73b3ab2fe
TypeValueNote
sha256 f10dcedfa178a0bce77e909b072ff0deb66ab588db90b7f5eb3d0bbe8c75215b Sample:MassLogger
md5 a317a8172a9fb03f888183a73b3ab2fe Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi