MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256c0f93c35c416c72970e7562c884e0b12dff10251dbea7354a1e7edb0d1956684
MD571a5292ecf35a65ca55919b5cd82c4df
File Typeexe
Size1016.5 KB
First Seen2025-06-20
File Nameswift.exe
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: c0f93c35c416c72970e7562c884e0b12dff10251dbea7354a1e7edb0d1956684
  • MD5: 71a5292ecf35a65ca55919b5cd82c4df

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: c0f93c35c416c729"
        threat_level = "medium"
        first_seen = "2025-06-20"
    condition:
        hash.sha256(0, filesize) == "c0f93c35c416c72970e7562c884e0b12dff10251dbea7354a1e7edb0d1956684"
}

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 c0f93c35c416c72970e7562c884e0b12dff10251dbea7354a1e7edb0d1956684 # MD5 71a5292ecf35a65ca55919b5cd82c4df
TypeValueNote
sha256 c0f93c35c416c72970e7562c884e0b12dff10251dbea7354a1e7edb0d1956684 Sample:MassLogger
md5 71a5292ecf35a65ca55919b5cd82c4df Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi