MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564bce84d45cb1c1a63ef738924c27a5c0904961307dbe305cd470c92208d283ff
MD5cea527b19773d2df031c4bdb5da1f0ec
File Typeexe
Size939.5 KB
First Seen2025-08-12
File Name4bce84d45cb1c1a63ef738924c27a5c0904961307dbe305cd470c92208d283ff
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: 4bce84d45cb1c1a63ef738924c27a5c0904961307dbe305cd470c92208d283ff
  • MD5: cea527b19773d2df031c4bdb5da1f0ec

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: 4bce84d45cb1c1a6"
        threat_level = "medium"
        first_seen = "2025-08-12"
    condition:
        hash.sha256(0, filesize) == "4bce84d45cb1c1a63ef738924c27a5c0904961307dbe305cd470c92208d283ff"
}

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 4bce84d45cb1c1a63ef738924c27a5c0904961307dbe305cd470c92208d283ff # MD5 cea527b19773d2df031c4bdb5da1f0ec
TypeValueNote
sha256 4bce84d45cb1c1a63ef738924c27a5c0904961307dbe305cd470c92208d283ff Sample:MassLogger
md5 cea527b19773d2df031c4bdb5da1f0ec Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi