MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256347d109045d063f1afca21b6f2babcf04c809972cfe10ccd90430e1a1f8665e0
MD5cd6f4b91fdde6aee66a4146a7cc2c41c
File Typeexe
Size674.0 KB
First Seen2025-10-06
File NameCargo booking for BFL against PO # 8000422.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: 347d109045d063f1afca21b6f2babcf04c809972cfe10ccd90430e1a1f8665e0
  • MD5: cd6f4b91fdde6aee66a4146a7cc2c41c

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: 347d109045d063f1"
        threat_level = "medium"
        first_seen = "2025-10-06"
    condition:
        hash.sha256(0, filesize) == "347d109045d063f1afca21b6f2babcf04c809972cfe10ccd90430e1a1f8665e0"
}

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 347d109045d063f1afca21b6f2babcf04c809972cfe10ccd90430e1a1f8665e0 # MD5 cd6f4b91fdde6aee66a4146a7cc2c41c
TypeValueNote
sha256 347d109045d063f1afca21b6f2babcf04c809972cfe10ccd90430e1a1f8665e0 Sample:MassLogger
md5 cd6f4b91fdde6aee66a4146a7cc2c41c Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi