MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d
MD5e57604e427a13b66da01563f36bc14ad
File Typeexe
Size576.5 KB
First Seen2025-06-16
File Namepacking list.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: b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d
  • MD5: e57604e427a13b66da01563f36bc14ad

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: b8a421f2c5ebf3f5"
        threat_level = "medium"
        first_seen = "2025-06-16"
    condition:
        hash.sha256(0, filesize) == "b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d"
}

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 b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d # MD5 e57604e427a13b66da01563f36bc14ad
TypeValueNote
sha256 b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d Sample:MassLogger
md5 e57604e427a13b66da01563f36bc14ad Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi