MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a0a027c1e9d3cd878ced60e767fc5a8f3079da7e2b721155ebc9392fa92f6c88
MD51b6b6cffe6bd98a4fd8d565c28f7d7d1
File Typevbe
Size967.1 KB
First Seen2025-07-16
File Namerrrc3342224.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: a0a027c1e9d3cd878ced60e767fc5a8f3079da7e2b721155ebc9392fa92f6c88
  • MD5: 1b6b6cffe6bd98a4fd8d565c28f7d7d1

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: a0a027c1e9d3cd87"
        threat_level = "medium"
        first_seen = "2025-07-16"
    condition:
        hash.sha256(0, filesize) == "a0a027c1e9d3cd878ced60e767fc5a8f3079da7e2b721155ebc9392fa92f6c88"
}

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 a0a027c1e9d3cd878ced60e767fc5a8f3079da7e2b721155ebc9392fa92f6c88 # MD5 1b6b6cffe6bd98a4fd8d565c28f7d7d1
TypeValueNote
sha256 a0a027c1e9d3cd878ced60e767fc5a8f3079da7e2b721155ebc9392fa92f6c88 Sample:MassLogger
md5 1b6b6cffe6bd98a4fd8d565c28f7d7d1 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi