MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2566fe33fc4ae6007b516915ccb54c2cf830cb180a95260d92a9b155697cc247f98
MD535d69c85c03b814fea6edb226980c006
File Typevbe
Size857.1 KB
First Seen2025-06-16
File Namerrr8807643tj.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: 6fe33fc4ae6007b516915ccb54c2cf830cb180a95260d92a9b155697cc247f98
  • MD5: 35d69c85c03b814fea6edb226980c006

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: 6fe33fc4ae6007b5"
        threat_level = "medium"
        first_seen = "2025-06-16"
    condition:
        hash.sha256(0, filesize) == "6fe33fc4ae6007b516915ccb54c2cf830cb180a95260d92a9b155697cc247f98"
}

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 6fe33fc4ae6007b516915ccb54c2cf830cb180a95260d92a9b155697cc247f98 # MD5 35d69c85c03b814fea6edb226980c006
TypeValueNote
sha256 6fe33fc4ae6007b516915ccb54c2cf830cb180a95260d92a9b155697cc247f98 Sample:MassLogger
md5 35d69c85c03b814fea6edb226980c006 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi