MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256e61db8e0b03e566917d24767e2146e6335f4dacfd1b1a8cda8a49de6e0544a19
MD592ecfc4795d0f2eb07385d09fb83ad68
File Typeexe
Size511.0 KB
First Seen2025-06-20
File NamePurchase Inquiry_KPCPU-8022.scr
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: e61db8e0b03e566917d24767e2146e6335f4dacfd1b1a8cda8a49de6e0544a19
  • MD5: 92ecfc4795d0f2eb07385d09fb83ad68

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: e61db8e0b03e5669"
        threat_level = "medium"
        first_seen = "2025-06-20"
    condition:
        hash.sha256(0, filesize) == "e61db8e0b03e566917d24767e2146e6335f4dacfd1b1a8cda8a49de6e0544a19"
}

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 e61db8e0b03e566917d24767e2146e6335f4dacfd1b1a8cda8a49de6e0544a19 # MD5 92ecfc4795d0f2eb07385d09fb83ad68
TypeValueNote
sha256 e61db8e0b03e566917d24767e2146e6335f4dacfd1b1a8cda8a49de6e0544a19 Sample:MassLogger
md5 92ecfc4795d0f2eb07385d09fb83ad68 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi