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Overview

overview

10

Static

static

10

2024-12-30...op.exe

windows7-x64

10

2024-12-30...op.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    96s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/12/2024, 17:35

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General

  • Target

    2024-12-30_c8b3da6422ea4cfe44125fc86cf37761_stop.exe

  • Size

    1.1MB

  • MD5

    c8b3da6422ea4cfe44125fc86cf37761

  • SHA1

    1abcdd17391232261c9702ee568ad6ebe4ab941c

  • SHA256

    aa1fa300c2870598bcc51a9e8fa75b1b40c7975aa73ad401f6a35578ef2786d3

  • SHA512

    32602075fcccf974218ac2848e1144314e9fbfb6ce7e07b5cb1f41a93771b4c16068bc3fcca01df21b16ddd2e564b21e506d25588fcc314231465a848a04f572

  • SSDEEP

    24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8mWQHUq7:F0dwAYZt6C31WeTVRPOhm7Uq7

Score
10/10
djvudiscoverypersistenceransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes
  • extension

    .held

  • offline_id

    vyhLHcV0DMKjS0CgDoJGF0yJ299laBK7lZQM9Tt1

  • payload_url

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool. Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0879held

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 1 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

    ransomwaredjvu
  • Djvu family
    djvu
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Modifies file permissions 1 TTPs 1 IoCs
    discovery
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-12-30_c8b3da6422ea4cfe44125fc86cf37761_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-30_c8b3da6422ea4cfe44125fc86cf37761_stop.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\4ef31112-133d-4f47-a622-89681c3e7a49" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:4652
    • C:\Users\Admin\AppData\Local\Temp\2024-12-30_c8b3da6422ea4cfe44125fc86cf37761_stop.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-12-30_c8b3da6422ea4cfe44125fc86cf37761_stop.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:4544

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
    Filesize

    1KB

    MD5

    67e486b2f148a3fca863728242b6273e

    SHA1

    452a84c183d7ea5b7c015b597e94af8eef66d44a

    SHA256

    facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

    SHA512

    d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

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  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

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  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
    Filesize

    174B

    MD5

    553bf93a82df80a33851fc521644782f

    SHA1

    4c26cdf2b6d87c323d30688a2f095572d16a297d

    SHA256

    74f9d1f50894a5b2a7dfba8695d9db69cf97d071b55954ca9e30bf45c835fad2

    SHA512

    ab9e8e5bd987a1eee3e0a054500de302b3dd20a28f66169d94c488ada6e8b745a46ab1e96f356b42afbb7e16aa1d3c582e011be7cca802afc4c240022997b261

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  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
    Filesize

    170B

    MD5

    91376cbc2628ca917913035e6908568a

    SHA1

    5f4fd9924bb049c538efd245cf8d953f27db72fc

    SHA256

    4a56a2a7a272cad1ced6796cad3c216d1a255d63dc1374ff9482825ac63d0ce3

    SHA512

    22a6275bfb671507c4c9ea0251165d1bb786c7567f88a2460bef9dfe89a676099535fbb021468527fad66eb2570e02a11c7e68af643abe8c59c8e941d5780ee5

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  • C:\Users\Admin\AppData\Local\4ef31112-133d-4f47-a622-89681c3e7a49\2024-12-30_c8b3da6422ea4cfe44125fc86cf37761_stop.exe
    Filesize

    1.1MB

    MD5

    c8b3da6422ea4cfe44125fc86cf37761

    SHA1

    1abcdd17391232261c9702ee568ad6ebe4ab941c

    SHA256

    aa1fa300c2870598bcc51a9e8fa75b1b40c7975aa73ad401f6a35578ef2786d3

    SHA512

    32602075fcccf974218ac2848e1144314e9fbfb6ce7e07b5cb1f41a93771b4c16068bc3fcca01df21b16ddd2e564b21e506d25588fcc314231465a848a04f572

    Download Submit