MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568dcec1d4937f5f02fb86c1c11bb75d39fad883b7ded9757880b806394aed7811
MD510dbaef20624d49de341080f7b84e1f0
File Typexlsx
Size2109.3 KB
First Seen2025-06-13
File NameHSBC_Bank_Payment transfer copy.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: 8dcec1d4937f5f02fb86c1c11bb75d39fad883b7ded9757880b806394aed7811
  • MD5: 10dbaef20624d49de341080f7b84e1f0

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: 8dcec1d4937f5f02"
        threat_level = "medium"
        first_seen = "2025-06-13"
    condition:
        hash.sha256(0, filesize) == "8dcec1d4937f5f02fb86c1c11bb75d39fad883b7ded9757880b806394aed7811"
}

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 8dcec1d4937f5f02fb86c1c11bb75d39fad883b7ded9757880b806394aed7811 # MD5 10dbaef20624d49de341080f7b84e1f0
TypeValueNote
sha256 8dcec1d4937f5f02fb86c1c11bb75d39fad883b7ded9757880b806394aed7811 Sample:MassLogger
md5 10dbaef20624d49de341080f7b84e1f0 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi