MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256b453f0478b081bd826918a4c63d4bf7abaa5b62b3a7129d5d199097adf3592fc
MD5c81ad51852058a3696244a37f3e8152c
File Typeexe
Size680.0 KB
First Seen2025-06-10
File Nameb453f0478b081bd826918a4c63d4bf7abaa5b62b3a7129d5d199097adf3592fc
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: b453f0478b081bd826918a4c63d4bf7abaa5b62b3a7129d5d199097adf3592fc
  • MD5: c81ad51852058a3696244a37f3e8152c

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: b453f0478b081bd8"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "b453f0478b081bd826918a4c63d4bf7abaa5b62b3a7129d5d199097adf3592fc"
}

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 b453f0478b081bd826918a4c63d4bf7abaa5b62b3a7129d5d199097adf3592fc # MD5 c81ad51852058a3696244a37f3e8152c
TypeValueNote
sha256 b453f0478b081bd826918a4c63d4bf7abaa5b62b3a7129d5d199097adf3592fc Sample:MassLogger
md5 c81ad51852058a3696244a37f3e8152c Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi