MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2560c109f77ddf97482236cb5b02234df95a025a674e262f5bab4fe952b32bd6738
MD5808b515fe1230edbbd0d4cb106959a27
File Typeexe
Size932.0 KB
First Seen2025-06-18
File NameDHL Air Waybill #6829514383-PDF.exe
TagsDHL, exe, 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: 0c109f77ddf97482236cb5b02234df95a025a674e262f5bab4fe952b32bd6738
  • MD5: 808b515fe1230edbbd0d4cb106959a27

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: 0c109f77ddf97482"
        threat_level = "medium"
        first_seen = "2025-06-18"
    condition:
        hash.sha256(0, filesize) == "0c109f77ddf97482236cb5b02234df95a025a674e262f5bab4fe952b32bd6738"
}

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 0c109f77ddf97482236cb5b02234df95a025a674e262f5bab4fe952b32bd6738 # MD5 808b515fe1230edbbd0d4cb106959a27
TypeValueNote
sha256 0c109f77ddf97482236cb5b02234df95a025a674e262f5bab4fe952b32bd6738 Sample:MassLogger
md5 808b515fe1230edbbd0d4cb106959a27 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi