MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2560b3bca24417a215c0c33a2bf4fd3ffb61bdd5f25c79ada55cce359a5c5c3acaa
MD52a45b21bb07456351db2b3bdcafa83d5
File Typeexe
Size246.5 KB
First Seen2026-06-05
File NameSecuriteInfo.com.BackDoor.Himsi.3535.1452
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: 0b3bca24417a215c0c33a2bf4fd3ffb61bdd5f25c79ada55cce359a5c5c3acaa
  • MD5: 2a45b21bb07456351db2b3bdcafa83d5

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: 0b3bca24417a215c"
        threat_level = "medium"
        first_seen = "2026-06-05"
    condition:
        hash.sha256(0, filesize) == "0b3bca24417a215c0c33a2bf4fd3ffb61bdd5f25c79ada55cce359a5c5c3acaa"
}

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 0b3bca24417a215c0c33a2bf4fd3ffb61bdd5f25c79ada55cce359a5c5c3acaa # MD5 2a45b21bb07456351db2b3bdcafa83d5
TypeValueNote
sha256 0b3bca24417a215c0c33a2bf4fd3ffb61bdd5f25c79ada55cce359a5c5c3acaa Sample:MassLogger
md5 2a45b21bb07456351db2b3bdcafa83d5 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi