MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25672ce241dc2ca6b3ee679af734dd4ac79701ae04e7ac7bab2171e8595abdfee39
MD5d6bf491ad87491c732f822578983e121
File Typerar
Size667.7 KB
First Seen2026-05-20
File NameBank_Transfer_Form.7z.rar
TagsMassLogger, rar

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 72ce241dc2ca6b3ee679af734dd4ac79701ae04e7ac7bab2171e8595abdfee39
  • MD5: d6bf491ad87491c732f822578983e121

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: 72ce241dc2ca6b3e"
        threat_level = "medium"
        first_seen = "2026-05-20"
    condition:
        hash.sha256(0, filesize) == "72ce241dc2ca6b3ee679af734dd4ac79701ae04e7ac7bab2171e8595abdfee39"
}

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 72ce241dc2ca6b3ee679af734dd4ac79701ae04e7ac7bab2171e8595abdfee39 # MD5 d6bf491ad87491c732f822578983e121
TypeValueNote
sha256 72ce241dc2ca6b3ee679af734dd4ac79701ae04e7ac7bab2171e8595abdfee39 Sample:MassLogger
md5 d6bf491ad87491c732f822578983e121 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi