MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256df3ca2d4db7a1b0ae6271cb473ede6b6f3b8ae1b483342fe11bf95a42f688e47
MD5cd1ad0b21100cd2cc740aa4a594d2f21
File Typeexe
Size535.5 KB
First Seen2025-08-12
File Namedf3ca2d4db7a1b0ae6271cb473ede6b6f3b8ae1b483342fe11bf95a42f688e47
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: df3ca2d4db7a1b0ae6271cb473ede6b6f3b8ae1b483342fe11bf95a42f688e47
  • MD5: cd1ad0b21100cd2cc740aa4a594d2f21

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: df3ca2d4db7a1b0a"
        threat_level = "medium"
        first_seen = "2025-08-12"
    condition:
        hash.sha256(0, filesize) == "df3ca2d4db7a1b0ae6271cb473ede6b6f3b8ae1b483342fe11bf95a42f688e47"
}

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 df3ca2d4db7a1b0ae6271cb473ede6b6f3b8ae1b483342fe11bf95a42f688e47 # MD5 cd1ad0b21100cd2cc740aa4a594d2f21
TypeValueNote
sha256 df3ca2d4db7a1b0ae6271cb473ede6b6f3b8ae1b483342fe11bf95a42f688e47 Sample:MassLogger
md5 cd1ad0b21100cd2cc740aa4a594d2f21 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi