MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2567a29f40dd40b565108145331b7ead5d6a17b46a88dfc4c58c013462683f8c75a
MD5761d18fe7abfe4dbe7ec4b8e4beb0a50
File Typeexe
Size767.0 KB
First Seen2025-08-25
File NameSecuriteInfo.com.Trojan.PackedNET.3390.307.16883
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: 7a29f40dd40b565108145331b7ead5d6a17b46a88dfc4c58c013462683f8c75a
  • MD5: 761d18fe7abfe4dbe7ec4b8e4beb0a50

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: 7a29f40dd40b5651"
        threat_level = "medium"
        first_seen = "2025-08-25"
    condition:
        hash.sha256(0, filesize) == "7a29f40dd40b565108145331b7ead5d6a17b46a88dfc4c58c013462683f8c75a"
}

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 7a29f40dd40b565108145331b7ead5d6a17b46a88dfc4c58c013462683f8c75a # MD5 761d18fe7abfe4dbe7ec4b8e4beb0a50
TypeValueNote
sha256 7a29f40dd40b565108145331b7ead5d6a17b46a88dfc4c58c013462683f8c75a Sample:MassLogger
md5 761d18fe7abfe4dbe7ec4b8e4beb0a50 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi