MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256dabefc91be0c65f7c40254c04508ca0bb6f461df5d71b8cd04a9c3b0bd2d7e63
MD5ddea235f5c1abf210a094458312e0247
File Typevbe
Size967.2 KB
First Seen2025-07-04
File Namerrrk88957746.vbe
TagsMassLogger, 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: dabefc91be0c65f7c40254c04508ca0bb6f461df5d71b8cd04a9c3b0bd2d7e63
  • MD5: ddea235f5c1abf210a094458312e0247

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: dabefc91be0c65f7"
        threat_level = "medium"
        first_seen = "2025-07-04"
    condition:
        hash.sha256(0, filesize) == "dabefc91be0c65f7c40254c04508ca0bb6f461df5d71b8cd04a9c3b0bd2d7e63"
}

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 dabefc91be0c65f7c40254c04508ca0bb6f461df5d71b8cd04a9c3b0bd2d7e63 # MD5 ddea235f5c1abf210a094458312e0247
TypeValueNote
sha256 dabefc91be0c65f7c40254c04508ca0bb6f461df5d71b8cd04a9c3b0bd2d7e63 Sample:MassLogger
md5 ddea235f5c1abf210a094458312e0247 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi