MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256d6f0f38727c762b36df15c44ef60ca77e766fb4f961634b21f4a2c806c481038
MD59958bb7248ac247180b32ff93968ec5e
File Typeexe
Size666.0 KB
First Seen2025-12-08
File Named6f0f38727c762b36df15c44ef60ca77e766fb4f961634b21f4a2c806c481038
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: d6f0f38727c762b36df15c44ef60ca77e766fb4f961634b21f4a2c806c481038
  • MD5: 9958bb7248ac247180b32ff93968ec5e

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: d6f0f38727c762b3"
        threat_level = "medium"
        first_seen = "2025-12-08"
    condition:
        hash.sha256(0, filesize) == "d6f0f38727c762b36df15c44ef60ca77e766fb4f961634b21f4a2c806c481038"
}

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 d6f0f38727c762b36df15c44ef60ca77e766fb4f961634b21f4a2c806c481038 # MD5 9958bb7248ac247180b32ff93968ec5e
TypeValueNote
sha256 d6f0f38727c762b36df15c44ef60ca77e766fb4f961634b21f4a2c806c481038 Sample:MassLogger
md5 9958bb7248ac247180b32ff93968ec5e Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi