MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25668dd97817032c05c6123e53bb7e4139e5c2d4895aaa343d4cff5ba2ab7f257b6
MD5111460c8fd8a97e54a0ee77dc8269e67
File Typeexe
Size694.0 KB
First Seen2025-08-19
File NameTeklif Talebi - Talep No 25T1847.pif
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: 68dd97817032c05c6123e53bb7e4139e5c2d4895aaa343d4cff5ba2ab7f257b6
  • MD5: 111460c8fd8a97e54a0ee77dc8269e67

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: 68dd97817032c05c"
        threat_level = "medium"
        first_seen = "2025-08-19"
    condition:
        hash.sha256(0, filesize) == "68dd97817032c05c6123e53bb7e4139e5c2d4895aaa343d4cff5ba2ab7f257b6"
}

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 68dd97817032c05c6123e53bb7e4139e5c2d4895aaa343d4cff5ba2ab7f257b6 # MD5 111460c8fd8a97e54a0ee77dc8269e67
TypeValueNote
sha256 68dd97817032c05c6123e53bb7e4139e5c2d4895aaa343d4cff5ba2ab7f257b6 Sample:MassLogger
md5 111460c8fd8a97e54a0ee77dc8269e67 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi