MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256640c7c6ea97dbecc0438cd6d77d4a599e459929f626e2f0b2b4a66dfe1f99b84
MD575071e56c67a11e605584e2dd88328b8
File Typeexe
Size1031.5 KB
First Seen2026-06-29
File NameeJpi6ZTmpkYoC3r.exe
Tagsexe, MassLogger

Malware Family: MassLogger

MassLogger, email tabanlı keylogger'dır.

TypeInfostealer
Programming LanguageC#/.NET
Target PlatformWindows
C2 ProtocolSMTP/FTP
PurposeEmail keylogger
First Seen Year2020

Threat Indicators (IOC)

  • SHA256: 640c7c6ea97dbecc0438cd6d77d4a599e459929f626e2f0b2b4a66dfe1f99b84
  • MD5: 75071e56c67a11e605584e2dd88328b8

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: 640c7c6ea97dbecc"
        threat_level = "medium"
        first_seen = "2026-06-29"
    condition:
        hash.sha256(0, filesize) == "640c7c6ea97dbecc0438cd6d77d4a599e459929f626e2f0b2b4a66dfe1f99b84"
}

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 640c7c6ea97dbecc0438cd6d77d4a599e459929f626e2f0b2b4a66dfe1f99b84 # MD5 75071e56c67a11e605584e2dd88328b8
TypeValueNote
sha256 640c7c6ea97dbecc0438cd6d77d4a599e459929f626e2f0b2b4a66dfe1f99b84 Sample:MassLogger
md5 75071e56c67a11e605584e2dd88328b8 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi