MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25629206d1811cec92ec29716b56093f535710fa9c1fa0f4911a09c6d1fba342e7b
MD5bac64dd34eeb2b11a7d33abf8d9adf19
File Typevbe
Size826.8 KB
First Seen2025-06-26
File NameDekont - 2025-06-26F1216355.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: 29206d1811cec92ec29716b56093f535710fa9c1fa0f4911a09c6d1fba342e7b
  • MD5: bac64dd34eeb2b11a7d33abf8d9adf19

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: 29206d1811cec92e"
        threat_level = "medium"
        first_seen = "2025-06-26"
    condition:
        hash.sha256(0, filesize) == "29206d1811cec92ec29716b56093f535710fa9c1fa0f4911a09c6d1fba342e7b"
}

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 29206d1811cec92ec29716b56093f535710fa9c1fa0f4911a09c6d1fba342e7b # MD5 bac64dd34eeb2b11a7d33abf8d9adf19
TypeValueNote
sha256 29206d1811cec92ec29716b56093f535710fa9c1fa0f4911a09c6d1fba342e7b Sample:MassLogger
md5 bac64dd34eeb2b11a7d33abf8d9adf19 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi