MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256c0e45af8bb79063162e88de2d0da5bddf2c5e4d6a3de38ff47e0d7b0e995b910
MD543d0eb5f6a992002e6a62dcac4a2e5e5
File Typeexe
Size255.5 KB
First Seen2026-03-04
File Namec0e45af8bb79063162e88de2d0da5bddf2c5e4d6a3de38ff47e0d7b0e995b910
Tagsbot8257734127, exe, 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: c0e45af8bb79063162e88de2d0da5bddf2c5e4d6a3de38ff47e0d7b0e995b910
  • MD5: 43d0eb5f6a992002e6a62dcac4a2e5e5

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: c0e45af8bb790631"
        threat_level = "medium"
        first_seen = "2026-03-04"
    condition:
        hash.sha256(0, filesize) == "c0e45af8bb79063162e88de2d0da5bddf2c5e4d6a3de38ff47e0d7b0e995b910"
}

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 c0e45af8bb79063162e88de2d0da5bddf2c5e4d6a3de38ff47e0d7b0e995b910 # MD5 43d0eb5f6a992002e6a62dcac4a2e5e5
TypeValueNote
sha256 c0e45af8bb79063162e88de2d0da5bddf2c5e4d6a3de38ff47e0d7b0e995b910 Sample:MassLogger
md5 43d0eb5f6a992002e6a62dcac4a2e5e5 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi