MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256c3e888e94e0dde7ff77a0341b1205c1d06da057f88be12127558735c389f1b05
MD5941dde86f32c42ee70181f84a02aedd5
File Typevbe
Size1273.0 KB
First Seen2025-12-09
File Namerrck88943s.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: c3e888e94e0dde7ff77a0341b1205c1d06da057f88be12127558735c389f1b05
  • MD5: 941dde86f32c42ee70181f84a02aedd5

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: c3e888e94e0dde7f"
        threat_level = "medium"
        first_seen = "2025-12-09"
    condition:
        hash.sha256(0, filesize) == "c3e888e94e0dde7ff77a0341b1205c1d06da057f88be12127558735c389f1b05"
}

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 c3e888e94e0dde7ff77a0341b1205c1d06da057f88be12127558735c389f1b05 # MD5 941dde86f32c42ee70181f84a02aedd5
TypeValueNote
sha256 c3e888e94e0dde7ff77a0341b1205c1d06da057f88be12127558735c389f1b05 Sample:MassLogger
md5 941dde86f32c42ee70181f84a02aedd5 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi