MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256d96469725c37265740aeff9e853fa8ee70426e2a07e518ae5f650518aabb12b6
MD54b157303bffddf2152511137c84b37c0
File Type7z
Size2.3 KB
First Seen2025-06-18
File NameUnconfirmed 762645.crdownload
Tags7z, crdownload, 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: d96469725c37265740aeff9e853fa8ee70426e2a07e518ae5f650518aabb12b6
  • MD5: 4b157303bffddf2152511137c84b37c0

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: d96469725c372657"
        threat_level = "medium"
        first_seen = "2025-06-18"
    condition:
        hash.sha256(0, filesize) == "d96469725c37265740aeff9e853fa8ee70426e2a07e518ae5f650518aabb12b6"
}

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 d96469725c37265740aeff9e853fa8ee70426e2a07e518ae5f650518aabb12b6 # MD5 4b157303bffddf2152511137c84b37c0
TypeValueNote
sha256 d96469725c37265740aeff9e853fa8ee70426e2a07e518ae5f650518aabb12b6 Sample:MassLogger
md5 4b157303bffddf2152511137c84b37c0 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi