MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2568071a34fbe988e2729418efe9752151ef25936c214b8335ca3f1a4a9760d5fe9
MD50778a429d5c1baeb7a935d6d6d81cd33
File Typeexe
Size942.5 KB
First Seen2025-06-10
File Name8071a34fbe988e2729418efe9752151ef25936c214b8335ca3f1a4a9760d5fe9
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: 8071a34fbe988e2729418efe9752151ef25936c214b8335ca3f1a4a9760d5fe9
  • MD5: 0778a429d5c1baeb7a935d6d6d81cd33

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: 8071a34fbe988e27"
        threat_level = "medium"
        first_seen = "2025-06-10"
    condition:
        hash.sha256(0, filesize) == "8071a34fbe988e2729418efe9752151ef25936c214b8335ca3f1a4a9760d5fe9"
}

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 8071a34fbe988e2729418efe9752151ef25936c214b8335ca3f1a4a9760d5fe9 # MD5 0778a429d5c1baeb7a935d6d6d81cd33
TypeValueNote
sha256 8071a34fbe988e2729418efe9752151ef25936c214b8335ca3f1a4a9760d5fe9 Sample:MassLogger
md5 0778a429d5c1baeb7a935d6d6d81cd33 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi