MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25665386f7569aa2948f2f15e780c8cff3cd01fee3865bb92a1fd54a02b8a8c1175
MD548bc89b7e6f0e424a4693bde6e4da5d4
File Typeexe
Size4631.5 KB
First Seen2026-02-06
File NameSecuriteInfo.com.Trojan.Siggen32.22788.22851.16708
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: 65386f7569aa2948f2f15e780c8cff3cd01fee3865bb92a1fd54a02b8a8c1175
  • MD5: 48bc89b7e6f0e424a4693bde6e4da5d4

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: 65386f7569aa2948"
        threat_level = "medium"
        first_seen = "2026-02-06"
    condition:
        hash.sha256(0, filesize) == "65386f7569aa2948f2f15e780c8cff3cd01fee3865bb92a1fd54a02b8a8c1175"
}

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 65386f7569aa2948f2f15e780c8cff3cd01fee3865bb92a1fd54a02b8a8c1175 # MD5 48bc89b7e6f0e424a4693bde6e4da5d4
TypeValueNote
sha256 65386f7569aa2948f2f15e780c8cff3cd01fee3865bb92a1fd54a02b8a8c1175 Sample:MassLogger
md5 48bc89b7e6f0e424a4693bde6e4da5d4 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi