MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f1d8e427f3a3d10ea5ac9f28cbb930bf61e42672af641335d417b57bd2860005
MD50aab6df92ad26c47acf649d48da4c464
File Typeexe
Size577.0 KB
First Seen2026-01-08
File NameRequest for Quotation - 171595.exe
Tagsexe, kingnovasend-mcnzxz-com, MassLogger

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: f1d8e427f3a3d10ea5ac9f28cbb930bf61e42672af641335d417b57bd2860005
  • MD5: 0aab6df92ad26c47acf649d48da4c464

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: f1d8e427f3a3d10e"
        threat_level = "medium"
        first_seen = "2026-01-08"
    condition:
        hash.sha256(0, filesize) == "f1d8e427f3a3d10ea5ac9f28cbb930bf61e42672af641335d417b57bd2860005"
}

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 f1d8e427f3a3d10ea5ac9f28cbb930bf61e42672af641335d417b57bd2860005 # MD5 0aab6df92ad26c47acf649d48da4c464
TypeValueNote
sha256 f1d8e427f3a3d10ea5ac9f28cbb930bf61e42672af641335d417b57bd2860005 Sample:MassLogger
md5 0aab6df92ad26c47acf649d48da4c464 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi