MassLogger | Threat Level: medium | Type: Infostealer
Cryptographic Identifiers
| SHA256 | a2f57d0e79f8f06c984be2aac660569eedcb8fa3eff303bbe6baa42f6eeacd54 |
|---|---|
| MD5 | 37bb173060bc1ef43f8b9e94f09a9676 |
| File Type | xlsx |
| Size | 2353.3 KB |
| First Seen | 2025-09-04 |
| File Name | Payment Advice.xlam |
| Tags | CVE-2017-11882, MassLogger, xlam, xlsx |
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:
a2f57d0e79f8f06c984be2aac660569eedcb8fa3eff303bbe6baa42f6eeacd54 - MD5:
37bb173060bc1ef43f8b9e94f09a9676
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: a2f57d0e79f8f06c"
threat_level = "medium"
first_seen = "2025-09-04"
condition:
hash.sha256(0, filesize) == "a2f57d0e79f8f06c984be2aac660569eedcb8fa3eff303bbe6baa42f6eeacd54"
}
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
a2f57d0e79f8f06c984be2aac660569eedcb8fa3eff303bbe6baa42f6eeacd54
# MD5
37bb173060bc1ef43f8b9e94f09a9676
| Type | Value | Note |
|---|---|---|
| sha256 | a2f57d0e79f8f06c984be2aac660569eedcb8fa3eff303bbe6baa42f6eeacd54 | Sample:MassLogger |
| md5 | 37bb173060bc1ef43f8b9e94f09a9676 | Sample:MassLogger |