MassLogger | Threat Level: medium | Type: Infostealer

Cryptographic Identifiers

SHA256a2c01011d0a2b5ee0a51fae41109e9ccfe2aae16e6c4212addac7f757f23893b
MD50307ec61fb90b7281da0ffbd4def0e80
File Typeexe
Size782.0 KB
First Seen2025-06-23
File NameUPS_CB70501920.exe
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: a2c01011d0a2b5ee0a51fae41109e9ccfe2aae16e6c4212addac7f757f23893b
  • MD5: 0307ec61fb90b7281da0ffbd4def0e80

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: a2c01011d0a2b5ee"
        threat_level = "medium"
        first_seen = "2025-06-23"
    condition:
        hash.sha256(0, filesize) == "a2c01011d0a2b5ee0a51fae41109e9ccfe2aae16e6c4212addac7f757f23893b"
}

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 a2c01011d0a2b5ee0a51fae41109e9ccfe2aae16e6c4212addac7f757f23893b # MD5 0307ec61fb90b7281da0ffbd4def0e80
TypeValueNote
sha256 a2c01011d0a2b5ee0a51fae41109e9ccfe2aae16e6c4212addac7f757f23893b Sample:MassLogger
md5 0307ec61fb90b7281da0ffbd4def0e80 Sample:MassLogger
Tags
massloggerinfostealermalwaremediumsha256hash-analizi