MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25688aa4405db77d53a14d4f55ac14da19b787cc7624f6281eef886d431a3de3bc6
MD5d4d79af42d6cc4a155058fd1f10a1c44
File Typevbe
Size966.9 KB
First Seen2025-07-08
File NameTEKLIF-08-07-25.vbe
Tagsgeo, MassLogger, TUR, vbe

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: 88aa4405db77d53a14d4f55ac14da19b787cc7624f6281eef886d431a3de3bc6
  • MD5: d4d79af42d6cc4a155058fd1f10a1c44

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: 88aa4405db77d53a"
        threat_level = "medium"
        first_seen = "2025-07-08"
    condition:
        hash.sha256(0, filesize) == "88aa4405db77d53a14d4f55ac14da19b787cc7624f6281eef886d431a3de3bc6"
}

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 88aa4405db77d53a14d4f55ac14da19b787cc7624f6281eef886d431a3de3bc6 # MD5 d4d79af42d6cc4a155058fd1f10a1c44
TypeValueNote
sha256 88aa4405db77d53a14d4f55ac14da19b787cc7624f6281eef886d431a3de3bc6 Sample:MassLogger
md5 d4d79af42d6cc4a155058fd1f10a1c44 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi