MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25616fc60f543f67f8b5e50902fa78efd66ae2c3b16212dad6a07c0d467a28e27e8
MD5595671a2f95c902fd8c23c8887781b04
File Typeexe
Size534.0 KB
First Seen2025-06-11
File NameSecuriteInfo.com.W32.MSIL_Kryptik.BYC.gen.Eldorado.22221.14384
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: 16fc60f543f67f8b5e50902fa78efd66ae2c3b16212dad6a07c0d467a28e27e8
  • MD5: 595671a2f95c902fd8c23c8887781b04

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: 16fc60f543f67f8b"
        threat_level = "medium"
        first_seen = "2025-06-11"
    condition:
        hash.sha256(0, filesize) == "16fc60f543f67f8b5e50902fa78efd66ae2c3b16212dad6a07c0d467a28e27e8"
}

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 16fc60f543f67f8b5e50902fa78efd66ae2c3b16212dad6a07c0d467a28e27e8 # MD5 595671a2f95c902fd8c23c8887781b04
TypeValueNote
sha256 16fc60f543f67f8b5e50902fa78efd66ae2c3b16212dad6a07c0d467a28e27e8 Sample:MassLogger
md5 595671a2f95c902fd8c23c8887781b04 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi