MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2560d38a21bfbe0279058f17dd10bafe3db801697f6528a67f79cb3f3ca483532ac
MD5b25f930cf98d13e17f871b429c6c6b33
File Typez
Size631.6 KB
First Seen2025-10-10
File NamePAYMENT TT COPY.PDF.z
TagsMassLogger, payment, z

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: 0d38a21bfbe0279058f17dd10bafe3db801697f6528a67f79cb3f3ca483532ac
  • MD5: b25f930cf98d13e17f871b429c6c6b33

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: 0d38a21bfbe02790"
        threat_level = "medium"
        first_seen = "2025-10-10"
    condition:
        hash.sha256(0, filesize) == "0d38a21bfbe0279058f17dd10bafe3db801697f6528a67f79cb3f3ca483532ac"
}

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 0d38a21bfbe0279058f17dd10bafe3db801697f6528a67f79cb3f3ca483532ac # MD5 b25f930cf98d13e17f871b429c6c6b33
TypeValueNote
sha256 0d38a21bfbe0279058f17dd10bafe3db801697f6528a67f79cb3f3ca483532ac Sample:MassLogger
md5 b25f930cf98d13e17f871b429c6c6b33 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi