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Analysis

  • max time kernel
    144s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    30/12/2023, 08:19

General

  • Target

    133f6d59b0922074f34b85cc18e5fc8c.exe

  • Size

    799KB

  • MD5

    133f6d59b0922074f34b85cc18e5fc8c

  • SHA1

    b308f99cf0a6abe5bed4f4153f36fdd0c6efb55b

  • SHA256

    ce518507120b7ae648448386a36242e32aa7448f7a0a04b388f5d2ce6451ac16

  • SHA512

    dfaf2556a22d0282e6e1de477c1f0e5f3cf847eb416adc671d7ee108bb267ce2eb34c22ffdb931a804f01670a1db9bd6faf6547abe3a0d22fddae1eb830a53db

  • SSDEEP

    24576:9kBKLKWeLtatcD5b9IbloyS5l6jLpcCh5aHTlHLm:2QneLtUcDN9IblUz6vja8

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/fhsgtsspen6/get.php

Attributes
  • extension

    .nooa

  • offline_id

    PLtnD1U6oAmgxgJ2nJik1mY9SwUQg07CiN0zSet1

  • payload_url

    http://securebiz.org/dl/build2.exe

    http://astdg.top/files/1/build3.exe

  • 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. You can get and look video overview decrypt tool: https://we.tl/t-CnI3tI6Ktv Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0322gDrgo

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

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

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\133f6d59b0922074f34b85cc18e5fc8c.exe
    "C:\Users\Admin\AppData\Local\Temp\133f6d59b0922074f34b85cc18e5fc8c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Users\Admin\AppData\Local\Temp\133f6d59b0922074f34b85cc18e5fc8c.exe
      "C:\Users\Admin\AppData\Local\Temp\133f6d59b0922074f34b85cc18e5fc8c.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2644
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a81825f6-1d2c-4c89-aac3-f818d361afcc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2468
      • C:\Users\Admin\AppData\Local\Temp\133f6d59b0922074f34b85cc18e5fc8c.exe
        "C:\Users\Admin\AppData\Local\Temp\133f6d59b0922074f34b85cc18e5fc8c.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2524
        • C:\Users\Admin\AppData\Local\Temp\133f6d59b0922074f34b85cc18e5fc8c.exe
          "C:\Users\Admin\AppData\Local\Temp\133f6d59b0922074f34b85cc18e5fc8c.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          PID:2824

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    1KB

    MD5

    f6f8b4b0f1271ad09be8ecd9728bfef6

    SHA1

    b1bab987ecdb10e752ec0ef815181277d9b7020e

    SHA256

    32e7864ad091668ffd0db8cc47535c98dff77f6bbd24c1f8d2ba676b7e2461e4

    SHA512

    d515e41e18081055caf1af288858a6a340526f3078136a1407cdd995e350295edbd61e561ebc4685bba735bec07b92727d583c46b7afea59784fb8965c66530c

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

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    724B

    MD5

    8202a1cd02e7d69597995cabbe881a12

    SHA1

    8858d9d934b7aa9330ee73de6c476acf19929ff6

    SHA256

    58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

    SHA512

    97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    410B

    MD5

    8a5ffc1c9314d00fd52b93683a888474

    SHA1

    49b30d315fbdc3d0476eb2efd307823d4769e6cf

    SHA256

    db2bb5eacff8a03c0dde56e79d5befed5b3081bfd69bed4cf4ce14c2ad005c06

    SHA512

    0d40d686fd030bbc10155ebee24e5f81ad3252beb4c3e5babb2052ef89e2f26cac8232934b7d640de60731f49f5937193da8d1af476680aa4aef4659da0c2374

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

    Filesize

    344B

    MD5

    77aac3a53db185b7213ea0cd0ec1df02

    SHA1

    ed955e70353074b73f1d89ffc357f53dadf6e0fc

    SHA256

    15d8e9aa45f9bf62cb6ca364b50fc144b68facd3158c710c41a911583e9a1c37

    SHA512

    4938655bda05be3fb953c08294014fdcccdde309b5e4f6d6a3a86fd7c9da82b9def0c252b610e309e38ba6b04af4f4f3d64332a02e2a1da048d2ab4c992167aa

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    392B

    MD5

    147e045bffb8e6404b9d90bbe84cba00

    SHA1

    39441e178b770607389fd97a4d8e166dba16e9c6

    SHA256

    dccb7b2eaeb40d879932857d8551850945cce0ac9eaa49619e97ff204d6fb87f

    SHA512

    a9c4af8c0ba97151ce22811126524b1f6ecb4c5f4b070e9bb87d1276b1d546bca0252b08f8bd369946ab6b42bde44b5caaed1a1c369c5869fc8a602bc82a9a5d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    242B

    MD5

    bb054a47c114065b00e7603b895f5546

    SHA1

    f083e7edbb76bbc8e7932ebe4d718382e4e881a6

    SHA256

    dd012830a437eb58f45b3d730fc71bcc4c7b384ad7a7ce2de8633aaeb3372198

    SHA512

    b91aee2051577159f9f4c2c036e077922132c0d1ff2d600b5c12e5b2ae189422f4290c23aea5f2bae4d616fefd33b2abe0e252d97e8c907d9088aa44bb942afc

  • C:\Users\Admin\AppData\Local\Temp\Tar479C.tmp

    Filesize

    92KB

    MD5

    71e4ce8b3a1b89f335a6936bbdafce4c

    SHA1

    6e0d450eb5f316a9924b3e58445b26bfb727001e

    SHA256

    a5edfae1527d0c8d9fe5e7a2c5c21b671e61f9981f3bcf9e8cc9f9bb9f3b44c5

    SHA512

    b80af88699330e1ff01e409daabdedeef350fe7d192724dfa8622afa71e132076144175f6e097f8136f1bba44c7cb30cfdd0414dbe4e0a4712b3bad7b70aeff7

  • C:\Users\Admin\AppData\Local\a81825f6-1d2c-4c89-aac3-f818d361afcc\133f6d59b0922074f34b85cc18e5fc8c.exe

    Filesize

    799KB

    MD5

    133f6d59b0922074f34b85cc18e5fc8c

    SHA1

    b308f99cf0a6abe5bed4f4153f36fdd0c6efb55b

    SHA256

    ce518507120b7ae648448386a36242e32aa7448f7a0a04b388f5d2ce6451ac16

    SHA512

    dfaf2556a22d0282e6e1de477c1f0e5f3cf847eb416adc671d7ee108bb267ce2eb34c22ffdb931a804f01670a1db9bd6faf6547abe3a0d22fddae1eb830a53db

  • memory/2372-6-0x0000000002D60000-0x0000000002E7B000-memory.dmp

    Filesize

    1.1MB

  • memory/2372-5-0x0000000002C60000-0x0000000002CF2000-memory.dmp

    Filesize

    584KB

  • memory/2372-0-0x0000000002C60000-0x0000000002CF2000-memory.dmp

    Filesize

    584KB

  • memory/2524-46-0x0000000000300000-0x0000000000392000-memory.dmp

    Filesize

    584KB

  • memory/2524-51-0x0000000000300000-0x0000000000392000-memory.dmp

    Filesize

    584KB

  • memory/2644-44-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2644-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2644-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2644-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2644-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2824-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2824-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2824-69-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2824-70-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2824-71-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2824-77-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2824-76-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2824-74-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2824-78-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2824-79-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB