MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256b8fe102219ac498f855d823704eba0e2973547d2ce5abaf5b91eb0f84d57e21c
MD51688a1608ccb7b197642723f15271e00
File Typeexe
Size895.5 KB
First Seen2025-11-08
File Name3ud41m0ni4.exe
Tagsexe, MassLogger, PXRECVOWEIWOEI

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: b8fe102219ac498f855d823704eba0e2973547d2ce5abaf5b91eb0f84d57e21c
  • MD5: 1688a1608ccb7b197642723f15271e00

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: b8fe102219ac498f"
        threat_level = "medium"
        first_seen = "2025-11-08"
    condition:
        hash.sha256(0, filesize) == "b8fe102219ac498f855d823704eba0e2973547d2ce5abaf5b91eb0f84d57e21c"
}

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 b8fe102219ac498f855d823704eba0e2973547d2ce5abaf5b91eb0f84d57e21c # MD5 1688a1608ccb7b197642723f15271e00
TypeValueNote
sha256 b8fe102219ac498f855d823704eba0e2973547d2ce5abaf5b91eb0f84d57e21c Sample:MassLogger
md5 1688a1608ccb7b197642723f15271e00 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi