MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25611da44857eca257bfbebcbd1558987a27ff67fffe12ea8ba2a8ba472abf9e2c0
MD5f5047234349c5b1d5d421671a3fd4db6
File Typeexe
Size609.0 KB
First Seen2025-06-21
File NamePurchase Order.exe
Tagsexe, MassLogger, Spam-ITA

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: 11da44857eca257bfbebcbd1558987a27ff67fffe12ea8ba2a8ba472abf9e2c0
  • MD5: f5047234349c5b1d5d421671a3fd4db6

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: 11da44857eca257b"
        threat_level = "medium"
        first_seen = "2025-06-21"
    condition:
        hash.sha256(0, filesize) == "11da44857eca257bfbebcbd1558987a27ff67fffe12ea8ba2a8ba472abf9e2c0"
}

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 11da44857eca257bfbebcbd1558987a27ff67fffe12ea8ba2a8ba472abf9e2c0 # MD5 f5047234349c5b1d5d421671a3fd4db6
TypeValueNote
sha256 11da44857eca257bfbebcbd1558987a27ff67fffe12ea8ba2a8ba472abf9e2c0 Sample:MassLogger
md5 f5047234349c5b1d5d421671a3fd4db6 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi