MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25663e47d7fccd41dc818b81c1514586e42e76fa780b655cd3c3b0e336485e8ca25
MD5d4ef5e14f44b57feaca38225a5c2c34f
File Typeexe
Size700.0 KB
First Seen2025-06-10
File Name63e47d7fccd41dc818b81c1514586e42e76fa780b655cd3c3b0e336485e8ca25
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: 63e47d7fccd41dc818b81c1514586e42e76fa780b655cd3c3b0e336485e8ca25
  • MD5: d4ef5e14f44b57feaca38225a5c2c34f

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: 63e47d7fccd41dc8"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "63e47d7fccd41dc818b81c1514586e42e76fa780b655cd3c3b0e336485e8ca25"
}

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 63e47d7fccd41dc818b81c1514586e42e76fa780b655cd3c3b0e336485e8ca25 # MD5 d4ef5e14f44b57feaca38225a5c2c34f
TypeValueNote
sha256 63e47d7fccd41dc818b81c1514586e42e76fa780b655cd3c3b0e336485e8ca25 Sample:MassLogger
md5 d4ef5e14f44b57feaca38225a5c2c34f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi