MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561dfeb104751544afbe70f792ef95535246eba683cdf47f21cb62038f8b5d86d6
MD5a4203690aa231979c8991cd60b11a782
File Typeexe
Size515.0 KB
First Seen2025-08-18
File NameSecuriteInfo.com.Trojan.005b7e031.10177.2423
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: 1dfeb104751544afbe70f792ef95535246eba683cdf47f21cb62038f8b5d86d6
  • MD5: a4203690aa231979c8991cd60b11a782

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: 1dfeb104751544af"
        threat_level = "medium"
        first_seen = "2025-08-18"
    condition:
        hash.sha256(0, filesize) == "1dfeb104751544afbe70f792ef95535246eba683cdf47f21cb62038f8b5d86d6"
}

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 1dfeb104751544afbe70f792ef95535246eba683cdf47f21cb62038f8b5d86d6 # MD5 a4203690aa231979c8991cd60b11a782
TypeValueNote
sha256 1dfeb104751544afbe70f792ef95535246eba683cdf47f21cb62038f8b5d86d6 Sample:MassLogger
md5 a4203690aa231979c8991cd60b11a782 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi