MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256bc637e040e88cb1a0a11815fbe4be970cfa6df863a816e070a3cb39665aadd6e
MD50e1ba53105b06cd73e8128a71336a369
File Typeexe
Size1173.5 KB
First Seen2025-07-07
File Namebc637e040e88cb1a0a11815fbe4be970cfa6df863a816e070a3cb39665aadd6e
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: bc637e040e88cb1a0a11815fbe4be970cfa6df863a816e070a3cb39665aadd6e
  • MD5: 0e1ba53105b06cd73e8128a71336a369

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: bc637e040e88cb1a"
        threat_level = "medium"
        first_seen = "2025-07-07"
    condition:
        hash.sha256(0, filesize) == "bc637e040e88cb1a0a11815fbe4be970cfa6df863a816e070a3cb39665aadd6e"
}

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 bc637e040e88cb1a0a11815fbe4be970cfa6df863a816e070a3cb39665aadd6e # MD5 0e1ba53105b06cd73e8128a71336a369
TypeValueNote
sha256 bc637e040e88cb1a0a11815fbe4be970cfa6df863a816e070a3cb39665aadd6e Sample:MassLogger
md5 0e1ba53105b06cd73e8128a71336a369 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi