MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256ab16e654e1cd8c20d4255a5d4dfcace05d24de1952285c80c87a5b4010e42295
MD53bab87ae12826bd4c486c8aea73aa8f9
File Typeexe
Size550.0 KB
First Seen2025-06-12
File NamePurchase Order #98540-00..bat
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: ab16e654e1cd8c20d4255a5d4dfcace05d24de1952285c80c87a5b4010e42295
  • MD5: 3bab87ae12826bd4c486c8aea73aa8f9

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: ab16e654e1cd8c20"
        threat_level = "medium"
        first_seen = "2025-06-12"
    condition:
        hash.sha256(0, filesize) == "ab16e654e1cd8c20d4255a5d4dfcace05d24de1952285c80c87a5b4010e42295"
}

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 ab16e654e1cd8c20d4255a5d4dfcace05d24de1952285c80c87a5b4010e42295 # MD5 3bab87ae12826bd4c486c8aea73aa8f9
TypeValueNote
sha256 ab16e654e1cd8c20d4255a5d4dfcace05d24de1952285c80c87a5b4010e42295 Sample:MassLogger
md5 3bab87ae12826bd4c486c8aea73aa8f9 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi