MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561c5d928b4df9619ef30069566ad4cc46baad1fed0874fccd9782361fc5e1ed7e
MD5d19a7ccd6ccd1236af65c6868391d3c5
File Typevbe
Size967.1 KB
First Seen2025-07-16
File Namelll7332wq1.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: 1c5d928b4df9619ef30069566ad4cc46baad1fed0874fccd9782361fc5e1ed7e
  • MD5: d19a7ccd6ccd1236af65c6868391d3c5

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: 1c5d928b4df9619e"
        threat_level = "medium"
        first_seen = "2025-07-16"
    condition:
        hash.sha256(0, filesize) == "1c5d928b4df9619ef30069566ad4cc46baad1fed0874fccd9782361fc5e1ed7e"
}

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 1c5d928b4df9619ef30069566ad4cc46baad1fed0874fccd9782361fc5e1ed7e # MD5 d19a7ccd6ccd1236af65c6868391d3c5
TypeValueNote
sha256 1c5d928b4df9619ef30069566ad4cc46baad1fed0874fccd9782361fc5e1ed7e Sample:MassLogger
md5 d19a7ccd6ccd1236af65c6868391d3c5 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi