MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2566d7bd0f24261739722d0d052000ea27767c6b73446aa5d0dd8d2b9b39a105563
MD5de5cc8ccefb4b0537bd6c57ac46d7ac0
File Typevbe
Size966.9 KB
First Seen2025-07-08
File NameDekont.pdf.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: 6d7bd0f24261739722d0d052000ea27767c6b73446aa5d0dd8d2b9b39a105563
  • MD5: de5cc8ccefb4b0537bd6c57ac46d7ac0

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: 6d7bd0f242617397"
        threat_level = "medium"
        first_seen = "2025-07-08"
    condition:
        hash.sha256(0, filesize) == "6d7bd0f24261739722d0d052000ea27767c6b73446aa5d0dd8d2b9b39a105563"
}

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 6d7bd0f24261739722d0d052000ea27767c6b73446aa5d0dd8d2b9b39a105563 # MD5 de5cc8ccefb4b0537bd6c57ac46d7ac0
TypeValueNote
sha256 6d7bd0f24261739722d0d052000ea27767c6b73446aa5d0dd8d2b9b39a105563 Sample:MassLogger
md5 de5cc8ccefb4b0537bd6c57ac46d7ac0 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi