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
    117s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    30/12/2024, 17:35

Sharing

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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
  • 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 8 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⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\585535b4-75d0-400b-8c66-14365cbb4d66" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:2236
    • 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:2856

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

          Download Submit

        • 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

          d655663108cfbbd5c745e2113dfb37e5

          SHA1

          b9c320f3dae75ddad1a447944a899585d9b9d1bd

          SHA256

          525fcfa2d5380401ec82447bd8be786748cbf15842bfe54ab6a9b2c6ae75ea5e

          SHA512

          c0faff0411faf4c9b5d0f797a0233eefb9070767d65aa03a1701f44ad7ceaf5cd711924a31d5456862cbe0337d316b4006bb75e0b8106f8b38d37a13f1030a01

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        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          Filesize

          342B

          MD5

          8fab0e504c3469a29460a1752462e8a3

          SHA1

          a7f826a3991c39d9fdde71571827c67aa8a24e38

          SHA256

          80f67092cab1aa0c7e52428c01f195c72817cd601302680c4b8b67bdc01dc428

          SHA512

          561a27f6a6943b388678d4613c9f211f6c5f3273e5d17db58cb02a8d034ec4373c7830ac9ce97b725763f0e9f2bc75fa08385b364f590322a3d9a55eb571e75d

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

          170B

          MD5

          1403052e90ee11501133d626175c65a8

          SHA1

          dc5ada16af7ade2615e8ad0493dde3bd831e67bc

          SHA256

          bd91460529cd7b0a9c34e6b983a8b7673f89c0bea2f3f99dfd8908fd4e28d066

          SHA512

          68851c1a6b96945711c63b33be6c8d8c81c924f388c85dd7e758de7574565bae2dc9dbda8b593ea971062f1e821d50efcf4f010f86258a809b11cd099dca2fe1

          Download Submit

        • C:\Users\Admin\AppData\Local\585535b4-75d0-400b-8c66-14365cbb4d66\2024-12-30_c8b3da6422ea4cfe44125fc86cf37761_stop.exe
          Filesize

          1.1MB

          MD5

          c8b3da6422ea4cfe44125fc86cf37761

          SHA1

          1abcdd17391232261c9702ee568ad6ebe4ab941c

          SHA256

          aa1fa300c2870598bcc51a9e8fa75b1b40c7975aa73ad401f6a35578ef2786d3

          SHA512

          32602075fcccf974218ac2848e1144314e9fbfb6ce7e07b5cb1f41a93771b4c16068bc3fcca01df21b16ddd2e564b21e506d25588fcc314231465a848a04f572

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        • C:\Users\Admin\AppData\Local\Temp\Cab868E.tmp
          Filesize

          70KB

          MD5

          49aebf8cbd62d92ac215b2923fb1b9f5

          SHA1

          1723be06719828dda65ad804298d0431f6aff976

          SHA256

          b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

          SHA512

          bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

          Download Submit