MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a034122bb42b81cd6a61a4f7bd5040f8ed2ea5e9d7164d4786f52a2a53a77bde
MD5e49bc5d9f0c14227e85308f1229e431c
File Typeexe
Size984.5 KB
First Seen2025-12-08
File Namea034122bb42b81cd6a61a4f7bd5040f8ed2ea5e9d7164d4786f52a2a53a77bde
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: a034122bb42b81cd6a61a4f7bd5040f8ed2ea5e9d7164d4786f52a2a53a77bde
  • MD5: e49bc5d9f0c14227e85308f1229e431c

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: a034122bb42b81cd"
        threat_level = "medium"
        first_seen = "2025-12-08"
    condition:
        hash.sha256(0, filesize) == "a034122bb42b81cd6a61a4f7bd5040f8ed2ea5e9d7164d4786f52a2a53a77bde"
}

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 a034122bb42b81cd6a61a4f7bd5040f8ed2ea5e9d7164d4786f52a2a53a77bde # MD5 e49bc5d9f0c14227e85308f1229e431c
TypeValueNote
sha256 a034122bb42b81cd6a61a4f7bd5040f8ed2ea5e9d7164d4786f52a2a53a77bde Sample:MassLogger
md5 e49bc5d9f0c14227e85308f1229e431c Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi