MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25692c3c84f664b9b2e877a5f25df3bd328c61e5a021b8357155757e480d0b038dd
MD5c234cbffeb28814b4d11171a38c3cd7e
File Typexlsx
Size2256.9 KB
First Seen2025-10-07
File Name(P.O_S6302651)_ZUOYUAN.xlam
TagsCVE-2017-11882, MassLogger, xlam, xlsx

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: 92c3c84f664b9b2e877a5f25df3bd328c61e5a021b8357155757e480d0b038dd
  • MD5: c234cbffeb28814b4d11171a38c3cd7e

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: 92c3c84f664b9b2e"
        threat_level = "medium"
        first_seen = "2025-10-07"
    condition:
        hash.sha256(0, filesize) == "92c3c84f664b9b2e877a5f25df3bd328c61e5a021b8357155757e480d0b038dd"
}

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 92c3c84f664b9b2e877a5f25df3bd328c61e5a021b8357155757e480d0b038dd # MD5 c234cbffeb28814b4d11171a38c3cd7e
TypeValueNote
sha256 92c3c84f664b9b2e877a5f25df3bd328c61e5a021b8357155757e480d0b038dd Sample:MassLogger
md5 c234cbffeb28814b4d11171a38c3cd7e Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi