MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256910d0b4be02f0b62fc05d07242a585daf233cd58e568758cb0e8dc468528d1b7
MD59f98f15ab9c65fbedeeb0115f7417ef8
File Typeexe
Size943.5 KB
First Seen2025-08-12
File Name910d0b4be02f0b62fc05d07242a585daf233cd58e568758cb0e8dc468528d1b7
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: 910d0b4be02f0b62fc05d07242a585daf233cd58e568758cb0e8dc468528d1b7
  • MD5: 9f98f15ab9c65fbedeeb0115f7417ef8

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: 910d0b4be02f0b62"
        threat_level = "medium"
        first_seen = "2025-08-12"
    condition:
        hash.sha256(0, filesize) == "910d0b4be02f0b62fc05d07242a585daf233cd58e568758cb0e8dc468528d1b7"
}

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 910d0b4be02f0b62fc05d07242a585daf233cd58e568758cb0e8dc468528d1b7 # MD5 9f98f15ab9c65fbedeeb0115f7417ef8
TypeValueNote
sha256 910d0b4be02f0b62fc05d07242a585daf233cd58e568758cb0e8dc468528d1b7 Sample:MassLogger
md5 9f98f15ab9c65fbedeeb0115f7417ef8 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi