MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256f2da651d317de371f5e5179e2e29243be16323c73392aa437f7f2b3fe4c471da
MD5eb6dec3e545d5ad9d08556349db9daa8
File Typeexe
Size464.5 KB
First Seen2025-08-09
File NameRNLER_N_Z_M_VEZELL_KLER_.pif.tmp
TagsMassLogger, pif

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: f2da651d317de371f5e5179e2e29243be16323c73392aa437f7f2b3fe4c471da
  • MD5: eb6dec3e545d5ad9d08556349db9daa8

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: f2da651d317de371"
        threat_level = "medium"
        first_seen = "2025-08-09"
    condition:
        hash.sha256(0, filesize) == "f2da651d317de371f5e5179e2e29243be16323c73392aa437f7f2b3fe4c471da"
}

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 f2da651d317de371f5e5179e2e29243be16323c73392aa437f7f2b3fe4c471da # MD5 eb6dec3e545d5ad9d08556349db9daa8
TypeValueNote
sha256 f2da651d317de371f5e5179e2e29243be16323c73392aa437f7f2b3fe4c471da Sample:MassLogger
md5 eb6dec3e545d5ad9d08556349db9daa8 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi