MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561c82d7afb5165833d07383fbdfc7daf78a19d527cd84bc24b3dbbc2035582472
MD5eb4819f2678bbaad7b8a301f67cb5a89
File Typeexe
Size1016.5 KB
First Seen2025-06-10
File Name1c82d7afb5165833d07383fbdfc7daf78a19d527cd84bc24b3dbbc2035582472
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: 1c82d7afb5165833d07383fbdfc7daf78a19d527cd84bc24b3dbbc2035582472
  • MD5: eb4819f2678bbaad7b8a301f67cb5a89

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: 1c82d7afb5165833"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "1c82d7afb5165833d07383fbdfc7daf78a19d527cd84bc24b3dbbc2035582472"
}

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 1c82d7afb5165833d07383fbdfc7daf78a19d527cd84bc24b3dbbc2035582472 # MD5 eb4819f2678bbaad7b8a301f67cb5a89
TypeValueNote
sha256 1c82d7afb5165833d07383fbdfc7daf78a19d527cd84bc24b3dbbc2035582472 Sample:MassLogger
md5 eb4819f2678bbaad7b8a301f67cb5a89 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi