MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25644729cfdf3da6f2b974e4853948d49909c7e3f1e25ac9c47331517031778b8d4
MD5711d9cbf1b1c77de45c4f1b1a82347e6
File Typeexe
Size97.5 KB
First Seen2025-06-16
File NameSKR14000521000025-HHND1400653.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: 44729cfdf3da6f2b974e4853948d49909c7e3f1e25ac9c47331517031778b8d4
  • MD5: 711d9cbf1b1c77de45c4f1b1a82347e6

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: 44729cfdf3da6f2b"
        threat_level = "medium"
        first_seen = "2025-06-16"
    condition:
        hash.sha256(0, filesize) == "44729cfdf3da6f2b974e4853948d49909c7e3f1e25ac9c47331517031778b8d4"
}

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 44729cfdf3da6f2b974e4853948d49909c7e3f1e25ac9c47331517031778b8d4 # MD5 711d9cbf1b1c77de45c4f1b1a82347e6
TypeValueNote
sha256 44729cfdf3da6f2b974e4853948d49909c7e3f1e25ac9c47331517031778b8d4 Sample:MassLogger
md5 711d9cbf1b1c77de45c4f1b1a82347e6 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi