MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25610876e1a7edd0dac0b1b072602f9012ab6597957a8ea7fe20d39bb797e4534f2
MD527311ddcbd957ff1caf08a75aa71894c
File Typevbs
Size148.4 KB
First Seen2025-07-08
File NameQuotation.vbs
TagsMassLogger, vbs

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: 10876e1a7edd0dac0b1b072602f9012ab6597957a8ea7fe20d39bb797e4534f2
  • MD5: 27311ddcbd957ff1caf08a75aa71894c

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: 10876e1a7edd0dac"
        threat_level = "medium"
        first_seen = "2025-07-08"
    condition:
        hash.sha256(0, filesize) == "10876e1a7edd0dac0b1b072602f9012ab6597957a8ea7fe20d39bb797e4534f2"
}

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 10876e1a7edd0dac0b1b072602f9012ab6597957a8ea7fe20d39bb797e4534f2 # MD5 27311ddcbd957ff1caf08a75aa71894c
TypeValueNote
sha256 10876e1a7edd0dac0b1b072602f9012ab6597957a8ea7fe20d39bb797e4534f2 Sample:MassLogger
md5 27311ddcbd957ff1caf08a75aa71894c Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi