MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256773b653655358eb665c778adcb77c4a62b4ebd04d226ae20aaa805f1782bb587
MD57761093e4928478680ad378876f8b42b
File Typevbe
Size1684.6 KB
First Seen2025-07-28
File Namee-dekont_html.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: 773b653655358eb665c778adcb77c4a62b4ebd04d226ae20aaa805f1782bb587
  • MD5: 7761093e4928478680ad378876f8b42b

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: 773b653655358eb6"
        threat_level = "medium"
        first_seen = "2025-07-28"
    condition:
        hash.sha256(0, filesize) == "773b653655358eb665c778adcb77c4a62b4ebd04d226ae20aaa805f1782bb587"
}

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 773b653655358eb665c778adcb77c4a62b4ebd04d226ae20aaa805f1782bb587 # MD5 7761093e4928478680ad378876f8b42b
TypeValueNote
sha256 773b653655358eb665c778adcb77c4a62b4ebd04d226ae20aaa805f1782bb587 Sample:MassLogger
md5 7761093e4928478680ad378876f8b42b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi