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Analysis

  • max time kernel
    295s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04/04/2024, 22:53

General

  • Target

    bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe

  • Size

    717KB

  • MD5

    81e8606a78bd38767ec0d3961ef587b2

  • SHA1

    218674abf3acf44640354fb2cb3b95e6d6362729

  • SHA256

    bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb

  • SHA512

    dd8834446c907c2f03ade9d3688f6b90ff6030a4647f5aa95a60f805811c0b5a1c69a8813901b9e151874e7e9f1825cd276c6aef6bdc63506bdea0b7f5707275

  • SSDEEP

    12288:qObBmsuLTaBWZxb5ebNpysfPASGqnTFkonMJZsSVth2TOwiMXF:qObiTaBysysAfqnTFkonM/sSVtVwvXF

Malware Config

Extracted

Family

djvu

C2

http://sajdfue.com/test2/get.php

Attributes
  • extension

    .uazq

  • offline_id

    Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1

  • payload_url

    http://sdfjhuz.com/dl/build2.exe

    http://sajdfue.com/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. 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: https://wetransfer.com/downloads/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0860PsawqS

rsa_pubkey.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199662282318

https://t.me/t8jmhl

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 OPR/108.0.0.0

Signatures

  • Detect Vidar Stealer 5 IoCs
  • Detected Djvu ransomware 14 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 12 IoCs
  • Loads dropped DLL 8 IoCs
  • 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 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe
    "C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe
      "C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1700
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\04bc63e8-c6bb-4d60-a863-d428de37e55f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2652
      • C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe
        "C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2692
        • C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe
          "C:\Users\Admin\AppData\Local\Temp\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2440
          • C:\Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build2.exe
            "C:\Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2140
            • C:\Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build2.exe
              "C:\Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build2.exe"
              6⤵
              • Executes dropped EXE
              • Modifies system certificate store
              • Suspicious use of WriteProcessMemory
              PID:1832
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1832 -s 1460
                7⤵
                • Loads dropped DLL
                • Program crash
                PID:2296
          • C:\Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build3.exe
            "C:\Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1064
            • C:\Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build3.exe
              "C:\Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2212
              • C:\Windows\SysWOW64\schtasks.exe
                /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
                7⤵
                • Creates scheduled task(s)
                PID:1808
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {EA263B6E-546F-48E6-93DD-F939E231121B} S-1-5-21-406356229-2805545415-1236085040-1000:IKJSPGIM\Admin:Interactive:[1]
    1⤵
      PID:2488
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        PID:2920
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2612
          • C:\Windows\SysWOW64\schtasks.exe
            /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
            4⤵
            • Creates scheduled task(s)
            PID:2808
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        PID:840
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2272
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        PID:1740
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1256
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        PID:2836
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2376

    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

      3ec812af46b0f111e99b54b129eb94f9

      SHA1

      103c4720315078aadb6d63111eec900a8652fc9c

      SHA256

      64d459714f98144b7a04079efbd965519d8b0bd3ed0021832e3683e79bcd41c6

      SHA512

      1fc8bac653f8f2daaa92014daa05a31cc02abac666c485318b76b379c53f47ddb79ee3495697716a1838b85766b5d71138bc6438844c661792064c22a68b2abc

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

      Filesize

      68KB

      MD5

      29f65ba8e88c063813cc50a4ea544e93

      SHA1

      05a7040d5c127e68c25d81cc51271ffb8bef3568

      SHA256

      1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

      SHA512

      e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

    • 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\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

      Filesize

      410B

      MD5

      5f3b6f4a4d893bf28702232c9803ca85

      SHA1

      d9b7b05638cff314d0d17e2a03fd7dbcee137e93

      SHA256

      06fb8886758e4cdf1d2e445a47a680dc9e31467a48ae5ea0574f8f788ee6d082

      SHA512

      f640edd3c07c72315be5d75941be5e865197a8ec66ffee0e5420430fb77c81d6a2c1ec95334023f59a907dde952a499b453e85a746c8120eea81a302ae650459

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

      Filesize

      344B

      MD5

      dd47e4aa2bb032b948c04d553e6c90cc

      SHA1

      0df27736a51dfbf8054ba28f2181d4d24bb2f175

      SHA256

      3b0231c67c5d2169592392611000c1c65100850d846da926ccfb0c75d3042ee0

      SHA512

      768c3462107de6574700beb24e58e5faf3e77b098c88552614dd2fdf2b9c45a2a5352b9ae50586050dc9c5de59fccdc93311e2f38e028ea06320505de9cd50b6

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

      Filesize

      344B

      MD5

      06228dd38a90ed9679ea460a30f8c81c

      SHA1

      5f45e01f403f196eda891292056653ac845a1bbf

      SHA256

      5dde281d4c766315097d56c7d6e526ea8068e2fd36e5efd1292730d482175fb3

      SHA512

      350fbceb355bd9123fa3d02e071cc0e084e458df3c63bc8f21bc14da9da652b7b0ae95a213f91c0d0649992f845b8dff6dc84bb88552e77cff82f4e578ecd313

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

      Filesize

      392B

      MD5

      73f85b6c71a2efd2394621720b3d04b0

      SHA1

      9852f3189067f8a2f68ba29e6c4fa538c5d923a2

      SHA256

      da7647ae40cd5b7ca8d5adddb5dd6e66ea6500a419037445b980776e4013690a

      SHA512

      30c43513ec6439e138c77c189e40cb6b56999b3f36736e8967f7eb6f69e03881b6caf036d1d864da71145fc674293c9e470714203483302942c9fe58f4f9c211

    • C:\Users\Admin\AppData\Local\04bc63e8-c6bb-4d60-a863-d428de37e55f\bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb.exe

      Filesize

      717KB

      MD5

      81e8606a78bd38767ec0d3961ef587b2

      SHA1

      218674abf3acf44640354fb2cb3b95e6d6362729

      SHA256

      bd8f6d89b9d846d75d398c278b8701aeaf110f0fb75b49aa3278fee8f4f2badb

      SHA512

      dd8834446c907c2f03ade9d3688f6b90ff6030a4647f5aa95a60f805811c0b5a1c69a8813901b9e151874e7e9f1825cd276c6aef6bdc63506bdea0b7f5707275

    • C:\Users\Admin\AppData\Local\Temp\Cab6F95.tmp

      Filesize

      65KB

      MD5

      ac05d27423a85adc1622c714f2cb6184

      SHA1

      b0fe2b1abddb97837ea0195be70ab2ff14d43198

      SHA256

      c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

      SHA512

      6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

    • C:\Users\Admin\AppData\Local\Temp\Tar7F9C.tmp

      Filesize

      171KB

      MD5

      9c0c641c06238516f27941aa1166d427

      SHA1

      64cd549fb8cf014fcd9312aa7a5b023847b6c977

      SHA256

      4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

      SHA512

      936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

    • C:\Users\Admin\AppData\Local\Temp\Tar8241.tmp

      Filesize

      177KB

      MD5

      435a9ac180383f9fa094131b173a2f7b

      SHA1

      76944ea657a9db94f9a4bef38f88c46ed4166983

      SHA256

      67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

      SHA512

      1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

    • \Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build2.exe

      Filesize

      318KB

      MD5

      4fbdcb0ee049b71cb8b9a68bf69f9e0e

      SHA1

      7e36a91700e0a7a8b3a3319cc4b93a1656447096

      SHA256

      31084adb877ef9bcf2143fa2d60ce8860d15af325424b709ad115febe8b96e81

      SHA512

      19aeff14cc2d1c60e99228b089f8c76ed5d7c7ed95ef3adb639b899c258c4cb17982d6de4294506c53dedbbf771f9f26e99094d22d1d05542d3cf86a6b24d283

    • \Users\Admin\AppData\Local\0fcde06c-ffed-4815-b852-4e7deb793798\build3.exe

      Filesize

      299KB

      MD5

      41b883a061c95e9b9cb17d4ca50de770

      SHA1

      1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

      SHA256

      fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

      SHA512

      cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

    • memory/840-282-0x00000000009B0000-0x0000000000AB0000-memory.dmp

      Filesize

      1024KB

    • memory/1064-225-0x0000000000220000-0x0000000000224000-memory.dmp

      Filesize

      16KB

    • memory/1064-223-0x0000000000960000-0x0000000000A60000-memory.dmp

      Filesize

      1024KB

    • memory/1644-4-0x0000000004660000-0x000000000477B000-memory.dmp

      Filesize

      1.1MB

    • memory/1644-0-0x0000000000320000-0x00000000003B2000-memory.dmp

      Filesize

      584KB

    • memory/1644-1-0x0000000000320000-0x00000000003B2000-memory.dmp

      Filesize

      584KB

    • memory/1700-26-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1700-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1700-8-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1700-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1700-7-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1740-310-0x0000000000900000-0x0000000000A00000-memory.dmp

      Filesize

      1024KB

    • memory/1832-237-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/1832-70-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1832-74-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/1832-77-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/1832-78-0x0000000000400000-0x0000000000648000-memory.dmp

      Filesize

      2.3MB

    • memory/2140-73-0x00000000002C0000-0x00000000002F5000-memory.dmp

      Filesize

      212KB

    • memory/2140-71-0x00000000008F0000-0x00000000009F0000-memory.dmp

      Filesize

      1024KB

    • memory/2212-226-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/2212-222-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2212-231-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/2212-229-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/2440-197-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2440-96-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2440-49-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2440-48-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2440-35-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2440-53-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2440-55-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2440-56-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2440-34-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2692-27-0x0000000000350000-0x00000000003E2000-memory.dmp

      Filesize

      584KB

    • memory/2692-29-0x0000000000350000-0x00000000003E2000-memory.dmp

      Filesize

      584KB

    • memory/2836-337-0x00000000008C0000-0x00000000009C0000-memory.dmp

      Filesize

      1024KB

    • memory/2920-259-0x0000000000230000-0x0000000000330000-memory.dmp

      Filesize

      1024KB