MassLogger | Threat Level: medium | Type: Infostealer
Cryptographic Identifiers
| SHA256 | 7e99f5e3d4efc4aece3e91b7cbbbcf2ffcb21072a8f14bd874047383e77fe5ab |
|---|---|
| MD5 | c409efde87d14f7a02f67742df2b28c6 |
| File Type | js |
| Size | 3335.1 KB |
| First Seen | 2026-05-27 |
| File Name | April Offer-SSQ2026.4953.JS |
| Tags | exe-in-archive, js, MassLogger, spamtrap |
Malware Family: MassLogger
MassLogger, email tabanlı 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:
7e99f5e3d4efc4aece3e91b7cbbbcf2ffcb21072a8f14bd874047383e77fe5ab - MD5:
c409efde87d14f7a02f67742df2b28c6
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: 7e99f5e3d4efc4ae"
threat_level = "medium"
first_seen = "2026-05-27"
condition:
hash.sha256(0, filesize) == "7e99f5e3d4efc4aece3e91b7cbbbcf2ffcb21072a8f14bd874047383e77fe5ab"
}
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
7e99f5e3d4efc4aece3e91b7cbbbcf2ffcb21072a8f14bd874047383e77fe5ab
# MD5
c409efde87d14f7a02f67742df2b28c6
| Type | Value | Note |
|---|---|---|
| sha256 | 7e99f5e3d4efc4aece3e91b7cbbbcf2ffcb21072a8f14bd874047383e77fe5ab | Sample:MassLogger |
| md5 | c409efde87d14f7a02f67742df2b28c6 | Sample:MassLogger |