MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256e323a58b7d2e2099cbcff458e5a558d4c8393e4c68a4fbb1177cc1a18db778ec
MD52adc73583cda40a839fba554a22618f3
File Typeexe
Size1032.5 KB
First Seen2025-07-07
File Namee323a58b7d2e2099cbcff458e5a558d4c8393e4c68a4fbb1177cc1a18db778ec
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: e323a58b7d2e2099cbcff458e5a558d4c8393e4c68a4fbb1177cc1a18db778ec
  • MD5: 2adc73583cda40a839fba554a22618f3

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: e323a58b7d2e2099"
        threat_level = "medium"
        first_seen = "2025-07-07"
    condition:
        hash.sha256(0, filesize) == "e323a58b7d2e2099cbcff458e5a558d4c8393e4c68a4fbb1177cc1a18db778ec"
}

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 e323a58b7d2e2099cbcff458e5a558d4c8393e4c68a4fbb1177cc1a18db778ec # MD5 2adc73583cda40a839fba554a22618f3
TypeValueNote
sha256 e323a58b7d2e2099cbcff458e5a558d4c8393e4c68a4fbb1177cc1a18db778ec Sample:MassLogger
md5 2adc73583cda40a839fba554a22618f3 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi