MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2562629d7ae1b268324c46eb5a6df14b1545e18e0ad01b5e578cf1d5b16e7c487f0
MD5c099c2e21dbefe026bf67eb5675b79a3
File Typerar
Size545.8 KB
First Seen2025-06-20
File Namestatement of account 170,960 USD.rar
TagsMassLogger, rar

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: 2629d7ae1b268324c46eb5a6df14b1545e18e0ad01b5e578cf1d5b16e7c487f0
  • MD5: c099c2e21dbefe026bf67eb5675b79a3

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: 2629d7ae1b268324"
        threat_level = "medium"
        first_seen = "2025-06-20"
    condition:
        hash.sha256(0, filesize) == "2629d7ae1b268324c46eb5a6df14b1545e18e0ad01b5e578cf1d5b16e7c487f0"
}

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 2629d7ae1b268324c46eb5a6df14b1545e18e0ad01b5e578cf1d5b16e7c487f0 # MD5 c099c2e21dbefe026bf67eb5675b79a3
TypeValueNote
sha256 2629d7ae1b268324c46eb5a6df14b1545e18e0ad01b5e578cf1d5b16e7c487f0 Sample:MassLogger
md5 c099c2e21dbefe026bf67eb5675b79a3 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi