MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA2561f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf
MD51b215d075b63e2acf3c17b1dafe12f44
File Typeexe
Size3929.0 KB
First Seen2025-07-23
File Namemsedge_elf.dll
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: 1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf
  • MD5: 1b215d075b63e2acf3c17b1dafe12f44

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: 1f0fac33792ee6d3"
        threat_level = "medium"
        first_seen = "2025-07-23"
    condition:
        hash.sha256(0, filesize) == "1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf"
}

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 1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf # MD5 1b215d075b63e2acf3c17b1dafe12f44
TypeValueNote
sha256 1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf Sample:MassLogger
md5 1b215d075b63e2acf3c17b1dafe12f44 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi