MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA25643983107448333441bbd1263529d005a5a33a04334a96267349d18128e64fb49
MD521477b7c3bd01592519265ffd7ac5ed1
File Typeexe
Size594.5 KB
First Seen2025-06-18
File NameDHL KULI500796821_PO2108229_SCAN-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: 43983107448333441bbd1263529d005a5a33a04334a96267349d18128e64fb49
  • MD5: 21477b7c3bd01592519265ffd7ac5ed1

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: 4398310744833344"
        threat_level = "medium"
        first_seen = "2025-06-18"
    condition:
        hash.sha256(0, filesize) == "43983107448333441bbd1263529d005a5a33a04334a96267349d18128e64fb49"
}

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 43983107448333441bbd1263529d005a5a33a04334a96267349d18128e64fb49 # MD5 21477b7c3bd01592519265ffd7ac5ed1
TypeValueNote
sha256 43983107448333441bbd1263529d005a5a33a04334a96267349d18128e64fb49 Sample:MassLogger
md5 21477b7c3bd01592519265ffd7ac5ed1 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi