MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256e054c2fc74e0788e698df9e69fed9d8fe975df61fe699281508e4a097e43c8d2
MD5b5fbca196b9ee835211342ffe65b2ddf
File Typeexe
Size578.5 KB
First Seen2025-09-05
File Namee054c2fc74e0788e698df9e69fed9d8fe975df61fe699281508e4a097e43c8d2
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: e054c2fc74e0788e698df9e69fed9d8fe975df61fe699281508e4a097e43c8d2
  • MD5: b5fbca196b9ee835211342ffe65b2ddf

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: e054c2fc74e0788e"
        threat_level = "medium"
        first_seen = "2025-09-05"
    condition:
        hash.sha256(0, filesize) == "e054c2fc74e0788e698df9e69fed9d8fe975df61fe699281508e4a097e43c8d2"
}

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 e054c2fc74e0788e698df9e69fed9d8fe975df61fe699281508e4a097e43c8d2 # MD5 b5fbca196b9ee835211342ffe65b2ddf
TypeValueNote
sha256 e054c2fc74e0788e698df9e69fed9d8fe975df61fe699281508e4a097e43c8d2 Sample:MassLogger
md5 b5fbca196b9ee835211342ffe65b2ddf Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi