MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2560b874c7c4bae91e7eedc3e9f785acd38357c073fa3430ad9feebe2195e744a78
MD553cbc00709364c47cb099dc1ef25b62c
File Typerar
Size648.0 KB
First Seen2026-05-21
File Nameİhale_14992_docx.z.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: 0b874c7c4bae91e7eedc3e9f785acd38357c073fa3430ad9feebe2195e744a78
  • MD5: 53cbc00709364c47cb099dc1ef25b62c

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: 0b874c7c4bae91e7"
        threat_level = "medium"
        first_seen = "2026-05-21"
    condition:
        hash.sha256(0, filesize) == "0b874c7c4bae91e7eedc3e9f785acd38357c073fa3430ad9feebe2195e744a78"
}

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 0b874c7c4bae91e7eedc3e9f785acd38357c073fa3430ad9feebe2195e744a78 # MD5 53cbc00709364c47cb099dc1ef25b62c
TypeValueNote
sha256 0b874c7c4bae91e7eedc3e9f785acd38357c073fa3430ad9feebe2195e744a78 Sample:MassLogger
md5 53cbc00709364c47cb099dc1ef25b62c Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi