MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25623157d14c24c14d77ea6f4d1aa93c848169fe13a5be42f44f7ad3a1e340825cb
MD5ecfbe94a46aa283971c8c69b7b4f6e4f
File Typexlsx
Size2480.8 KB
First Seen2025-09-08
File NameAWB.xlam
TagsCVE-2018-0798, 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: 23157d14c24c14d77ea6f4d1aa93c848169fe13a5be42f44f7ad3a1e340825cb
  • MD5: ecfbe94a46aa283971c8c69b7b4f6e4f

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: 23157d14c24c14d7"
        threat_level = "medium"
        first_seen = "2025-09-08"
    condition:
        hash.sha256(0, filesize) == "23157d14c24c14d77ea6f4d1aa93c848169fe13a5be42f44f7ad3a1e340825cb"
}

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 23157d14c24c14d77ea6f4d1aa93c848169fe13a5be42f44f7ad3a1e340825cb # MD5 ecfbe94a46aa283971c8c69b7b4f6e4f
TypeValueNote
sha256 23157d14c24c14d77ea6f4d1aa93c848169fe13a5be42f44f7ad3a1e340825cb Sample:MassLogger
md5 ecfbe94a46aa283971c8c69b7b4f6e4f Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi