MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2565457dc106b0165693cd3b25cfb4185d7c958157b4ab6ef05f636dbc880612dec
MD58f4ee26f1c60f38544194e0cf6b8597b
File Typeexe
Size1075.5 KB
First Seen2025-07-14
File Nameใบสั่งซื้อ.exe
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: 5457dc106b0165693cd3b25cfb4185d7c958157b4ab6ef05f636dbc880612dec
  • MD5: 8f4ee26f1c60f38544194e0cf6b8597b

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: 5457dc106b016569"
        threat_level = "medium"
        first_seen = "2025-07-14"
    condition:
        hash.sha256(0, filesize) == "5457dc106b0165693cd3b25cfb4185d7c958157b4ab6ef05f636dbc880612dec"
}

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 5457dc106b0165693cd3b25cfb4185d7c958157b4ab6ef05f636dbc880612dec # MD5 8f4ee26f1c60f38544194e0cf6b8597b
TypeValueNote
sha256 5457dc106b0165693cd3b25cfb4185d7c958157b4ab6ef05f636dbc880612dec Sample:MassLogger
md5 8f4ee26f1c60f38544194e0cf6b8597b Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi