MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2560bd1c5cb9f1a1f2dd30a3fc2188b542364a4cd051c48a1c3ce816bb4ea75c512
MD58ed108388a6c9229bb1a1966ce9e4692
File Typeexe
Size987.0 KB
First Seen2025-08-26
File NameSecuriteInfo.com.Win32.MalwareX-gen.55734966
Tagsexe, MassLogger

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: 0bd1c5cb9f1a1f2dd30a3fc2188b542364a4cd051c48a1c3ce816bb4ea75c512
  • MD5: 8ed108388a6c9229bb1a1966ce9e4692

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: 0bd1c5cb9f1a1f2d"
        threat_level = "medium"
        first_seen = "2025-08-26"
    condition:
        hash.sha256(0, filesize) == "0bd1c5cb9f1a1f2dd30a3fc2188b542364a4cd051c48a1c3ce816bb4ea75c512"
}

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 0bd1c5cb9f1a1f2dd30a3fc2188b542364a4cd051c48a1c3ce816bb4ea75c512 # MD5 8ed108388a6c9229bb1a1966ce9e4692
TypeValueNote
sha256 0bd1c5cb9f1a1f2dd30a3fc2188b542364a4cd051c48a1c3ce816bb4ea75c512 Sample:MassLogger
md5 8ed108388a6c9229bb1a1966ce9e4692 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi