MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256996dc4dc82537cf5ec2fd334070a72ff4840a2394ea7f3ad722155337d988062
MD5a7bf8c3d79f84f164c7fd586df0311a0
File Typevbe
Size1273.0 KB
First Seen2025-12-10
File NameEKSTRE - 1244.vbe
TagsMassLogger, vbe

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: 996dc4dc82537cf5ec2fd334070a72ff4840a2394ea7f3ad722155337d988062
  • MD5: a7bf8c3d79f84f164c7fd586df0311a0

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: 996dc4dc82537cf5"
        threat_level = "medium"
        first_seen = "2025-12-10"
    condition:
        hash.sha256(0, filesize) == "996dc4dc82537cf5ec2fd334070a72ff4840a2394ea7f3ad722155337d988062"
}

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 996dc4dc82537cf5ec2fd334070a72ff4840a2394ea7f3ad722155337d988062 # MD5 a7bf8c3d79f84f164c7fd586df0311a0
TypeValueNote
sha256 996dc4dc82537cf5ec2fd334070a72ff4840a2394ea7f3ad722155337d988062 Sample:MassLogger
md5 a7bf8c3d79f84f164c7fd586df0311a0 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi