MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2562884c42db1220734ad4c474701d49785a0b90f83d5c095923cecdc4c64a2c46c
MD5af070412ac2eca837460ab883ffa9b5d
File Typejs
Size31.5 KB
First Seen2026-02-23
File NameClarification Log Sheet to Tank Fabricator.js
Tagsjs, 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: 2884c42db1220734ad4c474701d49785a0b90f83d5c095923cecdc4c64a2c46c
  • MD5: af070412ac2eca837460ab883ffa9b5d

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: 2884c42db1220734"
        threat_level = "medium"
        first_seen = "2026-02-23"
    condition:
        hash.sha256(0, filesize) == "2884c42db1220734ad4c474701d49785a0b90f83d5c095923cecdc4c64a2c46c"
}

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 2884c42db1220734ad4c474701d49785a0b90f83d5c095923cecdc4c64a2c46c # MD5 af070412ac2eca837460ab883ffa9b5d
TypeValueNote
sha256 2884c42db1220734ad4c474701d49785a0b90f83d5c095923cecdc4c64a2c46c Sample:MassLogger
md5 af070412ac2eca837460ab883ffa9b5d Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi