MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256b825530e6ae318301d55258b6cb986139eb8305282ec8f2d5c10ddd85372b5e8
MD5a1fb79ebc64549d59b319f91c9dec5fd
File Typeexe
Size716.0 KB
First Seen2025-08-21
File NameSecuriteInfo.com.Trojan.PackedNET.3393.25805.25358
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: b825530e6ae318301d55258b6cb986139eb8305282ec8f2d5c10ddd85372b5e8
  • MD5: a1fb79ebc64549d59b319f91c9dec5fd

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: b825530e6ae31830"
        threat_level = "medium"
        first_seen = "2025-08-21"
    condition:
        hash.sha256(0, filesize) == "b825530e6ae318301d55258b6cb986139eb8305282ec8f2d5c10ddd85372b5e8"
}

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 b825530e6ae318301d55258b6cb986139eb8305282ec8f2d5c10ddd85372b5e8 # MD5 a1fb79ebc64549d59b319f91c9dec5fd
TypeValueNote
sha256 b825530e6ae318301d55258b6cb986139eb8305282ec8f2d5c10ddd85372b5e8 Sample:MassLogger
md5 a1fb79ebc64549d59b319f91c9dec5fd Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi