MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256433aff25ac769d4b590e4b2203ccf2d83de0bd7571fe0208eaa25902025aa304
MD5511fa556beeb17c84211efd67c806d29
File Typejs
Size4175.3 KB
First Seen2025-10-23
File NameALL DAMAGE CONTAINER PICTURES.js
Tagsjs, 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: 433aff25ac769d4b590e4b2203ccf2d83de0bd7571fe0208eaa25902025aa304
  • MD5: 511fa556beeb17c84211efd67c806d29

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: 433aff25ac769d4b"
        threat_level = "medium"
        first_seen = "2025-10-23"
    condition:
        hash.sha256(0, filesize) == "433aff25ac769d4b590e4b2203ccf2d83de0bd7571fe0208eaa25902025aa304"
}

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 433aff25ac769d4b590e4b2203ccf2d83de0bd7571fe0208eaa25902025aa304 # MD5 511fa556beeb17c84211efd67c806d29
TypeValueNote
sha256 433aff25ac769d4b590e4b2203ccf2d83de0bd7571fe0208eaa25902025aa304 Sample:MassLogger
md5 511fa556beeb17c84211efd67c806d29 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi