MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25624616fde56b8c710f96648681f9775bb23e20c2a427c846666d532d27748688d
MD5c2f78a0b09ab22b9dc5a78c365da783d
File Typeexe
Size1154.0 KB
First Seen2025-07-23
File NameQUOTATION.exe
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: 24616fde56b8c710f96648681f9775bb23e20c2a427c846666d532d27748688d
  • MD5: c2f78a0b09ab22b9dc5a78c365da783d

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: 24616fde56b8c710"
        threat_level = "medium"
        first_seen = "2025-07-23"
    condition:
        hash.sha256(0, filesize) == "24616fde56b8c710f96648681f9775bb23e20c2a427c846666d532d27748688d"
}

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 24616fde56b8c710f96648681f9775bb23e20c2a427c846666d532d27748688d # MD5 c2f78a0b09ab22b9dc5a78c365da783d
TypeValueNote
sha256 24616fde56b8c710f96648681f9775bb23e20c2a427c846666d532d27748688d Sample:MassLogger
md5 c2f78a0b09ab22b9dc5a78c365da783d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi