MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561dbe7dec1672ec3ba1376b5539d7a8fc6718769849cf6ebddeb2dc9cca4074e5
MD5f1af61ebe38c3b47a1bb0e89aa139b29
File Typeexe
Size767.5 KB
First Seen2025-06-27
File Name1dbe7dec1672ec3ba1376b5539d7a8fc6718769849cf6ebddeb2dc9cca4074e5
Tags213-209-150-18, exe, 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: 1dbe7dec1672ec3ba1376b5539d7a8fc6718769849cf6ebddeb2dc9cca4074e5
  • MD5: f1af61ebe38c3b47a1bb0e89aa139b29

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: 1dbe7dec1672ec3b"
        threat_level = "medium"
        first_seen = "2025-06-27"
    condition:
        hash.sha256(0, filesize) == "1dbe7dec1672ec3ba1376b5539d7a8fc6718769849cf6ebddeb2dc9cca4074e5"
}

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 1dbe7dec1672ec3ba1376b5539d7a8fc6718769849cf6ebddeb2dc9cca4074e5 # MD5 f1af61ebe38c3b47a1bb0e89aa139b29
TypeValueNote
sha256 1dbe7dec1672ec3ba1376b5539d7a8fc6718769849cf6ebddeb2dc9cca4074e5 Sample:MassLogger
md5 f1af61ebe38c3b47a1bb0e89aa139b29 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi