MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25631059724316bb14b008ab9acab69da4f5088bbc2a4796ca03bf24903eaa35b21
MD59d4cc26aa3053f75d3154ec5bf288e57
File Typevbe
Size540.0 KB
First Seen2025-10-03
File NameRocc.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: 31059724316bb14b008ab9acab69da4f5088bbc2a4796ca03bf24903eaa35b21
  • MD5: 9d4cc26aa3053f75d3154ec5bf288e57

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: 31059724316bb14b"
        threat_level = "medium"
        first_seen = "2025-10-03"
    condition:
        hash.sha256(0, filesize) == "31059724316bb14b008ab9acab69da4f5088bbc2a4796ca03bf24903eaa35b21"
}

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 31059724316bb14b008ab9acab69da4f5088bbc2a4796ca03bf24903eaa35b21 # MD5 9d4cc26aa3053f75d3154ec5bf288e57
TypeValueNote
sha256 31059724316bb14b008ab9acab69da4f5088bbc2a4796ca03bf24903eaa35b21 Sample:MassLogger
md5 9d4cc26aa3053f75d3154ec5bf288e57 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi