MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256728d4b18515d35ce8207f001ad9c8331ddce260d7ae995656faefaecce30f3c3
MD5bb44a45be5012cfa3f6ed135511ac968
File Typexlsx
Size2429.3 KB
First Seen2025-09-08
File Namefxpayments_1450039338669.xlam
TagsCVE-2017-11882, MassLogger, xlam, xlsx

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: 728d4b18515d35ce8207f001ad9c8331ddce260d7ae995656faefaecce30f3c3
  • MD5: bb44a45be5012cfa3f6ed135511ac968

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: 728d4b18515d35ce"
        threat_level = "medium"
        first_seen = "2025-09-08"
    condition:
        hash.sha256(0, filesize) == "728d4b18515d35ce8207f001ad9c8331ddce260d7ae995656faefaecce30f3c3"
}

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 728d4b18515d35ce8207f001ad9c8331ddce260d7ae995656faefaecce30f3c3 # MD5 bb44a45be5012cfa3f6ed135511ac968
TypeValueNote
sha256 728d4b18515d35ce8207f001ad9c8331ddce260d7ae995656faefaecce30f3c3 Sample:MassLogger
md5 bb44a45be5012cfa3f6ed135511ac968 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi