MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568f58abbb1697f2032b74d38d662850c94d566e189863ee8d779ae519da224af9
MD5ed1acc08a984c9fe2831638dc68d5dc3
File Typeexe
Size987.5 KB
First Seen2025-06-10
File Name8f58abbb1697f2032b74d38d662850c94d566e189863ee8d779ae519da224af9
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: 8f58abbb1697f2032b74d38d662850c94d566e189863ee8d779ae519da224af9
  • MD5: ed1acc08a984c9fe2831638dc68d5dc3

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: 8f58abbb1697f203"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "8f58abbb1697f2032b74d38d662850c94d566e189863ee8d779ae519da224af9"
}

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 8f58abbb1697f2032b74d38d662850c94d566e189863ee8d779ae519da224af9 # MD5 ed1acc08a984c9fe2831638dc68d5dc3
TypeValueNote
sha256 8f58abbb1697f2032b74d38d662850c94d566e189863ee8d779ae519da224af9 Sample:MassLogger
md5 ed1acc08a984c9fe2831638dc68d5dc3 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi