MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256d02b3e68a03290b0b3120ea79b9352b79859ff85e21582a19ad1e120dfcfc413
MD5c37db5986dd50b78050f31058679a3e8
File Typeexe
Size576.5 KB
First Seen2025-06-10
File Named02b3e68a03290b0b3120ea79b9352b79859ff85e21582a19ad1e120dfcfc413
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: d02b3e68a03290b0b3120ea79b9352b79859ff85e21582a19ad1e120dfcfc413
  • MD5: c37db5986dd50b78050f31058679a3e8

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: d02b3e68a03290b0"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "d02b3e68a03290b0b3120ea79b9352b79859ff85e21582a19ad1e120dfcfc413"
}

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 d02b3e68a03290b0b3120ea79b9352b79859ff85e21582a19ad1e120dfcfc413 # MD5 c37db5986dd50b78050f31058679a3e8
TypeValueNote
sha256 d02b3e68a03290b0b3120ea79b9352b79859ff85e21582a19ad1e120dfcfc413 Sample:MassLogger
md5 c37db5986dd50b78050f31058679a3e8 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi