MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256c77216a65fa6f95bdac8af253c1f6efe613700d326e4ee747db3efe1e833d149
MD5eb7a5e1b8fa3447b984968fb80bf0997
File Typerar
Size456.3 KB
First Seen2025-07-21
File NameINQ-NO56687-07-2025-AR10386-PR104850646-PDF.001
TagsMassLogger, rar

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: c77216a65fa6f95bdac8af253c1f6efe613700d326e4ee747db3efe1e833d149
  • MD5: eb7a5e1b8fa3447b984968fb80bf0997

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: c77216a65fa6f95b"
        threat_level = "medium"
        first_seen = "2025-07-21"
    condition:
        hash.sha256(0, filesize) == "c77216a65fa6f95bdac8af253c1f6efe613700d326e4ee747db3efe1e833d149"
}

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 c77216a65fa6f95bdac8af253c1f6efe613700d326e4ee747db3efe1e833d149 # MD5 eb7a5e1b8fa3447b984968fb80bf0997
TypeValueNote
sha256 c77216a65fa6f95bdac8af253c1f6efe613700d326e4ee747db3efe1e833d149 Sample:MassLogger
md5 eb7a5e1b8fa3447b984968fb80bf0997 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi