MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569045ac333c29d38689eb6c1de33a48f1a939ef9e23b1a85f2d3e4e31fefe485c
MD5a927b6c6b241b9a3cfe2779d48bec3e1
File Typevbe
Size966.9 KB
First Seen2025-07-08
File Namerrrck904432.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: 9045ac333c29d38689eb6c1de33a48f1a939ef9e23b1a85f2d3e4e31fefe485c
  • MD5: a927b6c6b241b9a3cfe2779d48bec3e1

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: 9045ac333c29d386"
        threat_level = "medium"
        first_seen = "2025-07-08"
    condition:
        hash.sha256(0, filesize) == "9045ac333c29d38689eb6c1de33a48f1a939ef9e23b1a85f2d3e4e31fefe485c"
}

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 9045ac333c29d38689eb6c1de33a48f1a939ef9e23b1a85f2d3e4e31fefe485c # MD5 a927b6c6b241b9a3cfe2779d48bec3e1
TypeValueNote
sha256 9045ac333c29d38689eb6c1de33a48f1a939ef9e23b1a85f2d3e4e31fefe485c Sample:MassLogger
md5 a927b6c6b241b9a3cfe2779d48bec3e1 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi