MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561ba170ab165a3a134d7328c275ca25cbabc37eaf2779c8cb04de4b4d9a42d3fb
MD5b385d8feb42f90ac07bcbfe81f498b29
File Typeexe
Size365.3 KB
First Seen2025-09-24
File Name1ba170ab165a3a134d7328c275ca25cbabc37eaf2779c8cb04de4b4d9a42d3fb
Tagsexe, MassLogger, signed

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: 1ba170ab165a3a134d7328c275ca25cbabc37eaf2779c8cb04de4b4d9a42d3fb
  • MD5: b385d8feb42f90ac07bcbfe81f498b29

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: 1ba170ab165a3a13"
        threat_level = "medium"
        first_seen = "2025-09-24"
    condition:
        hash.sha256(0, filesize) == "1ba170ab165a3a134d7328c275ca25cbabc37eaf2779c8cb04de4b4d9a42d3fb"
}

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 1ba170ab165a3a134d7328c275ca25cbabc37eaf2779c8cb04de4b4d9a42d3fb # MD5 b385d8feb42f90ac07bcbfe81f498b29
TypeValueNote
sha256 1ba170ab165a3a134d7328c275ca25cbabc37eaf2779c8cb04de4b4d9a42d3fb Sample:MassLogger
md5 b385d8feb42f90ac07bcbfe81f498b29 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi