MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256984277311c91dbc49e63998341931c412a246899679e0797304a4ea7e88f37d6
MD5f073b6d9747d74d12f09f19fe2772c0c
File Typeexe
Size7388.0 KB
First Seen2025-08-26
File Namertinfo.dll
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: 984277311c91dbc49e63998341931c412a246899679e0797304a4ea7e88f37d6
  • MD5: f073b6d9747d74d12f09f19fe2772c0c

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: 984277311c91dbc4"
        threat_level = "medium"
        first_seen = "2025-08-26"
    condition:
        hash.sha256(0, filesize) == "984277311c91dbc49e63998341931c412a246899679e0797304a4ea7e88f37d6"
}

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 984277311c91dbc49e63998341931c412a246899679e0797304a4ea7e88f37d6 # MD5 f073b6d9747d74d12f09f19fe2772c0c
TypeValueNote
sha256 984277311c91dbc49e63998341931c412a246899679e0797304a4ea7e88f37d6 Sample:MassLogger
md5 f073b6d9747d74d12f09f19fe2772c0c Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi