MassLogger | Threat Level: medium | Type: Infostealer
Cryptographic Identifiers
| SHA256 | fc26a33b837e60366f55345e182457f06edb1800c88c241a23973ccb2e1401d8 |
|---|---|
| MD5 | d5219d81e2000cfc97bf307961aaef71 |
| File Type | js |
| Size | 2.2 KB |
| First Seen | 2025-08-08 |
| File Name | 1C25TNT_00000682.js |
| Tags | js, MassLogger, TNT |
Malware Family: MassLogger
MassLogger, email keylogger'dır.
| Type | Infostealer |
|---|---|
| Programming Language | C#/.NET |
| Target Platform | Windows |
| C2 Protocol | SMTP/FTP |
| Purpose | Email keylogger |
| First Seen Year | 2020 |
Threat Indicators (IOC)
- SHA256:
fc26a33b837e60366f55345e182457f06edb1800c88c241a23973ccb2e1401d8 - MD5:
d5219d81e2000cfc97bf307961aaef71
You can verify all hash values of this sample on VirusTotal.
System Cleanup Guide
- Disconnect the system from the network immediately
- Yeni bir cihazdan banka hesabı, sosyal medya ve e-posta şifrelerini değiştirin
- Move crypto wallets to a new address and abandon the old ones
- Start a full scan with up-to-date antivirus
- Clear saved browser passwords and enable 2FA
- Sign out of all sessions on every affected service
YARA Rule Hints
rule MassLogger_SHA256 {
meta:
description = "MassLogger sample: fc26a33b837e6036"
threat_level = "medium"
first_seen = "2025-08-08"
condition:
hash.sha256(0, filesize) == "fc26a33b837e60366f55345e182457f06edb1800c88c241a23973ccb2e1401d8"
}
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
fc26a33b837e60366f55345e182457f06edb1800c88c241a23973ccb2e1401d8
# MD5
d5219d81e2000cfc97bf307961aaef71
| Type | Value | Note |
|---|---|---|
| sha256 | fc26a33b837e60366f55345e182457f06edb1800c88c241a23973ccb2e1401d8 | Sample:MassLogger |
| md5 | d5219d81e2000cfc97bf307961aaef71 | Sample:MassLogger |