MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256d54e191c821eca4d5eef60354d06bd0c0023325a4b500d87a2dc04ba9204a166
MD5aaf22e529087656b430d68596a29a55e
File Typevbe
Size822.0 KB
First Seen2025-10-22
File NameTEKLIF_0001048.VBE
TagsMassLogger, 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: d54e191c821eca4d5eef60354d06bd0c0023325a4b500d87a2dc04ba9204a166
  • MD5: aaf22e529087656b430d68596a29a55e

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: d54e191c821eca4d"
        threat_level = "medium"
        first_seen = "2025-10-22"
    condition:
        hash.sha256(0, filesize) == "d54e191c821eca4d5eef60354d06bd0c0023325a4b500d87a2dc04ba9204a166"
}

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 d54e191c821eca4d5eef60354d06bd0c0023325a4b500d87a2dc04ba9204a166 # MD5 aaf22e529087656b430d68596a29a55e
TypeValueNote
sha256 d54e191c821eca4d5eef60354d06bd0c0023325a4b500d87a2dc04ba9204a166 Sample:MassLogger
md5 aaf22e529087656b430d68596a29a55e Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi