MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a13805a2e5ccdba45254a4c8da2c19102191a2811f1f875001aaf99f59cb9199
MD55428d0e56524247dd1e23e76e21e61ba
File Typeexe
Size934.0 KB
First Seen2025-06-10
File Namea13805a2e5ccdba45254a4c8da2c19102191a2811f1f875001aaf99f59cb9199
Tagsexe, 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: a13805a2e5ccdba45254a4c8da2c19102191a2811f1f875001aaf99f59cb9199
  • MD5: 5428d0e56524247dd1e23e76e21e61ba

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: a13805a2e5ccdba4"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "a13805a2e5ccdba45254a4c8da2c19102191a2811f1f875001aaf99f59cb9199"
}

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 a13805a2e5ccdba45254a4c8da2c19102191a2811f1f875001aaf99f59cb9199 # MD5 5428d0e56524247dd1e23e76e21e61ba
TypeValueNote
sha256 a13805a2e5ccdba45254a4c8da2c19102191a2811f1f875001aaf99f59cb9199 Sample:MassLogger
md5 5428d0e56524247dd1e23e76e21e61ba Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi