MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a022cfa5686195fe2223b987ef7ce8bd55a338a74679826bc961d948b35824b2
MD583d3574071b7b423f758b8f0fc5da150
File Typevbe
Size966.8 KB
First Seen2025-07-01
File NameDekont.pdf.vbe
Tagsgeo, MassLogger, TUR, vbe

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: a022cfa5686195fe2223b987ef7ce8bd55a338a74679826bc961d948b35824b2
  • MD5: 83d3574071b7b423f758b8f0fc5da150

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: a022cfa5686195fe"
        threat_level = "medium"
        first_seen = "2025-07-01"
    condition:
        hash.sha256(0, filesize) == "a022cfa5686195fe2223b987ef7ce8bd55a338a74679826bc961d948b35824b2"
}

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 a022cfa5686195fe2223b987ef7ce8bd55a338a74679826bc961d948b35824b2 # MD5 83d3574071b7b423f758b8f0fc5da150
TypeValueNote
sha256 a022cfa5686195fe2223b987ef7ce8bd55a338a74679826bc961d948b35824b2 Sample:MassLogger
md5 83d3574071b7b423f758b8f0fc5da150 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi