Overview

overview

10

Static

static

f4234a501e...0b.exe

windows7_x64

10

f4234a501e...0b.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    189s
  • max time network
    185s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    16-05-2022 19:24

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b.exe

  • Size

    261KB

  • MD5

    7d80230df68ccba871815d68f016c282

  • SHA1

    e10874c6108a26ceedfc84f50881824462b5b6b6

  • SHA256

    f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b

  • SHA512

    64d02b3e7ed82a64aaac1f74c34d6b6e6feaac665ca9c08911b93eddcec66595687024ec576e74ea09a1193ace3923969c75de8733859835fef45335cf265540

Score
10/10
fantomevasionransomware

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2632097139-1792035885-811742494-1000\DECRYPT_YOUR_FILES.HTML

Ransom Note
<html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>DrvSD7G7mYb+3kMW3sMol4JTi28rQgKF68xpGSrG53w1Uat4mZsDVL9xbm4wo9Ou6jyjo/rnYuQjmR3qE+Shh9Xid5KSi+FLCcsX8iGumRlNm/Tg4vWeqbTUuCv2i111ulrWvEhUkACwYShl7DreRElL/vAeRJFeJEX9Daf85XqXZRz1V0lcqr9fiKhtHf3ypTAP5uJBG9zBe3P1e/4XiMPXdPbdb2D9b/4f81rnxD6DIln3AwwAHBD3HyV8YU9zKnNirbYNGdiWtl6nMWbh4bLHpqfNlZmIBxdyWIS2F3exc0wAG6OBBiQExrrg/4VuslLKavQjwJK+5bDIVcfLDQ==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Signatures

  • Fantom

    Ransomware which hides encryption process behind fake Windows Update screen.

    ransomwarefantom
  • Disables Task Manager via registry modification
    evasion
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops file in Program Files directory 44 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b.exe
    "C:\Users\Admin\AppData\Local\Temp\f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      PID:2180

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
    Filesize

    21KB

    MD5

    fec89e9d2784b4c015fed6f5ae558e08

    SHA1

    581fd9fb59bd42fbe7bd065cf0e6ff6d4d0daba2

    SHA256

    489f2546a4ad1e0e0147d1ca2fd8801785689f67fb850171ccbaa6306a152065

    SHA512

    e3bbf89cc0a955a2819455137e540952c55f417732a596ef314a46d5312b3bed644ac7595f75d3639ebc30e85f0f210dba0ef5b013d1b83bafd2c17a9d685a24

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
    Filesize

    21KB

    MD5

    fec89e9d2784b4c015fed6f5ae558e08

    SHA1

    581fd9fb59bd42fbe7bd065cf0e6ff6d4d0daba2

    SHA256

    489f2546a4ad1e0e0147d1ca2fd8801785689f67fb850171ccbaa6306a152065

    SHA512

    e3bbf89cc0a955a2819455137e540952c55f417732a596ef314a46d5312b3bed644ac7595f75d3639ebc30e85f0f210dba0ef5b013d1b83bafd2c17a9d685a24

    Download Submit

  • memory/1780-130-0x0000000004990000-0x0000000004F34000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/1780-131-0x0000000004FB0000-0x0000000005042000-memory.dmp

    Filesize

    584KB

    Download

  • memory/1780-132-0x00000000050E0000-0x00000000050EA000-memory.dmp

    Filesize

    40KB

    Download

  • memory/2180-136-0x00000000000B0000-0x00000000000BC000-memory.dmp

    Filesize

    48KB

    Download

  • memory/2180-137-0x00007FF8F0A10000-0x00007FF8F14D1000-memory.dmp

    Filesize

    10.8MB

    Download