MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2564967063d4e87fb19f7b5980c1d613ba2deb591a99a17b96258ecbb32858905bf
MD50fa76528e5b3980afc31fdb15830c7d5
File Typevbe
Size966.9 KB
First Seen2025-07-08
File Namelig6677904.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: 4967063d4e87fb19f7b5980c1d613ba2deb591a99a17b96258ecbb32858905bf
  • MD5: 0fa76528e5b3980afc31fdb15830c7d5

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: 4967063d4e87fb19"
        threat_level = "medium"
        first_seen = "2025-07-08"
    condition:
        hash.sha256(0, filesize) == "4967063d4e87fb19f7b5980c1d613ba2deb591a99a17b96258ecbb32858905bf"
}

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 4967063d4e87fb19f7b5980c1d613ba2deb591a99a17b96258ecbb32858905bf # MD5 0fa76528e5b3980afc31fdb15830c7d5
TypeValueNote
sha256 4967063d4e87fb19f7b5980c1d613ba2deb591a99a17b96258ecbb32858905bf Sample:MassLogger
md5 0fa76528e5b3980afc31fdb15830c7d5 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi