MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2562039f497f7025ed907e398bb488fa828d4b55c45b2194beaa5de698176d033f0
MD58aadb90d883750ca49fa373f70e471b7
File Typevbe
Size969.1 KB
First Seen2025-08-01
File NameTeklif_0801.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: 2039f497f7025ed907e398bb488fa828d4b55c45b2194beaa5de698176d033f0
  • MD5: 8aadb90d883750ca49fa373f70e471b7

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: 2039f497f7025ed9"
        threat_level = "medium"
        first_seen = "2025-08-01"
    condition:
        hash.sha256(0, filesize) == "2039f497f7025ed907e398bb488fa828d4b55c45b2194beaa5de698176d033f0"
}

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 2039f497f7025ed907e398bb488fa828d4b55c45b2194beaa5de698176d033f0 # MD5 8aadb90d883750ca49fa373f70e471b7
TypeValueNote
sha256 2039f497f7025ed907e398bb488fa828d4b55c45b2194beaa5de698176d033f0 Sample:MassLogger
md5 8aadb90d883750ca49fa373f70e471b7 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi