MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567a18ef7855272c9635f34d13ddbcd700f57de87a28bc93b9a4471134a130a303
MD533d74f54cc19651b8dcc5620c7cfe28d
File Typevbe
Size825.5 KB
First Seen2025-06-23
File Namerrrk99076.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: 7a18ef7855272c9635f34d13ddbcd700f57de87a28bc93b9a4471134a130a303
  • MD5: 33d74f54cc19651b8dcc5620c7cfe28d

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: 7a18ef7855272c96"
        threat_level = "medium"
        first_seen = "2025-06-23"
    condition:
        hash.sha256(0, filesize) == "7a18ef7855272c9635f34d13ddbcd700f57de87a28bc93b9a4471134a130a303"
}

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 7a18ef7855272c9635f34d13ddbcd700f57de87a28bc93b9a4471134a130a303 # MD5 33d74f54cc19651b8dcc5620c7cfe28d
TypeValueNote
sha256 7a18ef7855272c9635f34d13ddbcd700f57de87a28bc93b9a4471134a130a303 Sample:MassLogger
md5 33d74f54cc19651b8dcc5620c7cfe28d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi