MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2562ce0358958dec9420addee948555ce5fd0810e9b6054c6a9d5b472e93501e582
MD56ca21b5b6fabcc30ee6c1b9ac79e26f2
File Typeexe
Size850.0 KB
First Seen2025-09-12
File NameSecuriteInfo.com.Win32.MalwareX-gen.15167844
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: 2ce0358958dec9420addee948555ce5fd0810e9b6054c6a9d5b472e93501e582
  • MD5: 6ca21b5b6fabcc30ee6c1b9ac79e26f2

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: 2ce0358958dec942"
        threat_level = "medium"
        first_seen = "2025-09-12"
    condition:
        hash.sha256(0, filesize) == "2ce0358958dec9420addee948555ce5fd0810e9b6054c6a9d5b472e93501e582"
}

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 2ce0358958dec9420addee948555ce5fd0810e9b6054c6a9d5b472e93501e582 # MD5 6ca21b5b6fabcc30ee6c1b9ac79e26f2
TypeValueNote
sha256 2ce0358958dec9420addee948555ce5fd0810e9b6054c6a9d5b472e93501e582 Sample:MassLogger
md5 6ca21b5b6fabcc30ee6c1b9ac79e26f2 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi