MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561fe4b1c7d4b24503a9941afaaef7b4a62bb081c522cd4a69c7c51fb879bdcdd9
MD51972ce2826f1a35e310f41bfc9a33ae7
File Typevbs
Size1309.2 KB
First Seen2026-01-30
File NameDoc N°47255.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: 1fe4b1c7d4b24503a9941afaaef7b4a62bb081c522cd4a69c7c51fb879bdcdd9
  • MD5: 1972ce2826f1a35e310f41bfc9a33ae7

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: 1fe4b1c7d4b24503"
        threat_level = "medium"
        first_seen = "2026-01-30"
    condition:
        hash.sha256(0, filesize) == "1fe4b1c7d4b24503a9941afaaef7b4a62bb081c522cd4a69c7c51fb879bdcdd9"
}

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 1fe4b1c7d4b24503a9941afaaef7b4a62bb081c522cd4a69c7c51fb879bdcdd9 # MD5 1972ce2826f1a35e310f41bfc9a33ae7
TypeValueNote
sha256 1fe4b1c7d4b24503a9941afaaef7b4a62bb081c522cd4a69c7c51fb879bdcdd9 Sample:MassLogger
md5 1972ce2826f1a35e310f41bfc9a33ae7 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi