MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256cf2e1be4ae8b8c69a6986f9f4f552679e7f64c52a68c63b4a27ea1ee7339c226
MD5088d3f993dc6c4a03b67d009626d9bc4
File Typeexe
Size367.0 KB
First Seen2025-08-03
File Namesagecybermrawfile.exe
Tagsexe, MassLogger, opendir, vastkupan-com

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: cf2e1be4ae8b8c69a6986f9f4f552679e7f64c52a68c63b4a27ea1ee7339c226
  • MD5: 088d3f993dc6c4a03b67d009626d9bc4

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: cf2e1be4ae8b8c69"
        threat_level = "medium"
        first_seen = "2025-08-03"
    condition:
        hash.sha256(0, filesize) == "cf2e1be4ae8b8c69a6986f9f4f552679e7f64c52a68c63b4a27ea1ee7339c226"
}

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 cf2e1be4ae8b8c69a6986f9f4f552679e7f64c52a68c63b4a27ea1ee7339c226 # MD5 088d3f993dc6c4a03b67d009626d9bc4
TypeValueNote
sha256 cf2e1be4ae8b8c69a6986f9f4f552679e7f64c52a68c63b4a27ea1ee7339c226 Sample:MassLogger
md5 088d3f993dc6c4a03b67d009626d9bc4 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi