MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564ff7b6a637b0b5d5512fda978084a0a66f5e41fc6da2014218b359cca75ae32a
MD5ee7e6e2121560c336376c5fcb400adac
File Typezip
Size535.1 KB
First Seen2026-05-20
File NameDokaz_o_uplati.zip
TagsMassLogger, zip

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 4ff7b6a637b0b5d5512fda978084a0a66f5e41fc6da2014218b359cca75ae32a
  • MD5: ee7e6e2121560c336376c5fcb400adac

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: 4ff7b6a637b0b5d5"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "4ff7b6a637b0b5d5512fda978084a0a66f5e41fc6da2014218b359cca75ae32a"
}

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 4ff7b6a637b0b5d5512fda978084a0a66f5e41fc6da2014218b359cca75ae32a # MD5 ee7e6e2121560c336376c5fcb400adac
TypeValueNote
sha256 4ff7b6a637b0b5d5512fda978084a0a66f5e41fc6da2014218b359cca75ae32a Sample:MassLogger
md5 ee7e6e2121560c336376c5fcb400adac Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi