MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256e3bf7e92d4c23b90f0e2c702ed3747e4dfb7c61ecd39f4fd61f8792242eea4c5
MD5acf1c601e744b9757d4610004f3036ec
File Typeexe
Size1084.5 KB
First Seen2025-07-22
File NameRequest for quote_731997.cmd
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: e3bf7e92d4c23b90f0e2c702ed3747e4dfb7c61ecd39f4fd61f8792242eea4c5
  • MD5: acf1c601e744b9757d4610004f3036ec

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: e3bf7e92d4c23b90"
        threat_level = "medium"
        first_seen = "2025-07-22"
    condition:
        hash.sha256(0, filesize) == "e3bf7e92d4c23b90f0e2c702ed3747e4dfb7c61ecd39f4fd61f8792242eea4c5"
}

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 e3bf7e92d4c23b90f0e2c702ed3747e4dfb7c61ecd39f4fd61f8792242eea4c5 # MD5 acf1c601e744b9757d4610004f3036ec
TypeValueNote
sha256 e3bf7e92d4c23b90f0e2c702ed3747e4dfb7c61ecd39f4fd61f8792242eea4c5 Sample:MassLogger
md5 acf1c601e744b9757d4610004f3036ec Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi