MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2569f11a53f99a46a3f038bbc277cb935090d521731ef806b4e9ad5cde9bcac9e0e
MD5e042cbd0428ff123ff3ac1a58a05518c
File Typeexe
Size5401.5 KB
First Seen2025-11-19
File NameRFQ JI-TECH_Materials&Specification-DB700-BOQ.exe
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: 9f11a53f99a46a3f038bbc277cb935090d521731ef806b4e9ad5cde9bcac9e0e
  • MD5: e042cbd0428ff123ff3ac1a58a05518c

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: 9f11a53f99a46a3f"
        threat_level = "medium"
        first_seen = "2025-11-19"
    condition:
        hash.sha256(0, filesize) == "9f11a53f99a46a3f038bbc277cb935090d521731ef806b4e9ad5cde9bcac9e0e"
}

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 9f11a53f99a46a3f038bbc277cb935090d521731ef806b4e9ad5cde9bcac9e0e # MD5 e042cbd0428ff123ff3ac1a58a05518c
TypeValueNote
sha256 9f11a53f99a46a3f038bbc277cb935090d521731ef806b4e9ad5cde9bcac9e0e Sample:MassLogger
md5 e042cbd0428ff123ff3ac1a58a05518c Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi