Analysis

  • max time kernel
    299s
  • max time network
    299s
  • platform
    windows10-1703_x64
  • resource
    win10-20240214-en
  • resource tags

    arch:x64arch:x86image:win10-20240214-enlocale:en-usos:windows10-1703-x64system
  • submitted
    20/02/2024, 04:51

General

  • Target

    a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe

  • Size

    730KB

  • MD5

    5ae24b94a6f7359ffdea3b2f1270d821

  • SHA1

    e497f21c534187587516340cae1eba1388836645

  • SHA256

    a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1

  • SHA512

    012d851e336c52b919736f105a5b4b0c59a714e80063495a63417edfceb44a487c9d803e724f9aef03a7cdf4074f13d6375d58eb329e4e9374cbfb2de98fe382

  • SSDEEP

    12288:4HmKwTPJS79c/WkhgD5we14ihDZ5hs9iBakvKAoflP:4HTqRS79+2N1lDZ3PBafAo

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .lkhy

  • offline_id

    OxV6DGl22io8sqMOW1zCCOlzPiv4f1Vqzw7Y8zt1

  • payload_url

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

    http://habrafa.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://we.tl/t-uNdL2KHHdy 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: 0851ASdw

rsa_pubkey.plain

Extracted

Family

vidar

Version

7.9

Botnet

7f6c51bbce50f99b5a632c204a5ec558

C2

https://t.me/hypergog

https://steamcommunity.com/profiles/76561199642171824

Attributes
  • profile_id_v2

    7f6c51bbce50f99b5a632c204a5ec558

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36

Signatures

  • Detect Vidar Stealer 8 IoCs
  • Detected Djvu ransomware 17 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 14 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 9 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.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe
    "C:\Users\Admin\AppData\Local\Temp\a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:32
    • C:\Users\Admin\AppData\Local\Temp\a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe
      "C:\Users\Admin\AppData\Local\Temp\a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:312
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e77f2409-bdbd-44eb-96ac-2bbb16362dfd" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3824
      • C:\Users\Admin\AppData\Local\Temp\a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe
        "C:\Users\Admin\AppData\Local\Temp\a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2636
        • C:\Users\Admin\AppData\Local\Temp\a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe
          "C:\Users\Admin\AppData\Local\Temp\a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1452
          • C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build2.exe
            "C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1160
            • C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build2.exe
              "C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:1344
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1344 -s 1908
                7⤵
                • Program crash
                PID:700
          • C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build3.exe
            "C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:780
            • C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build3.exe
              "C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:4608
              • 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:2536
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2168
    • 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 WriteProcessMemory
      PID:4496
      • 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"
        3⤵
        • Creates scheduled task(s)
        PID:2556
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    PID:304
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:1760
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    PID:3796
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:2988
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    PID:5004
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:3776
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    PID:2628
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:2772

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

          cf7c39c642fe92ca4ec669b9e8ff3fec

          SHA1

          76413213c3f47df40edf753b6a3d0f6cbe0c6952

          SHA256

          41b1a0794d5e5a4e347c14679008df772ba82fd081f41c978d3ceec5609ddbf8

          SHA512

          e65ec70b24de0f284da43aa40f8c6511ea3765f6e3460c764de3dbc7a987d26072b81063d70b7276e3e6c542dbe9570edf3a36419d98e50e859b32ea1896e6cf

        • 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

          9bbdbb015e5ad794cd24e4f51b4f1994

          SHA1

          b5ab9c1997f9265de386627d10131172592a54f4

          SHA256

          a622dbe12a4f8a0ee637fe76d93cad93ace4d88002e4bab3147b8b570c723628

          SHA512

          ec30c70fac548a522d5eae8789c94d55872e19612e695b84371374f87857ff961aab9b1e398d2682c95f268ee75d2f4e44569989f8a17ba9a1653bc9d2e11cda

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

          Filesize

          392B

          MD5

          43acbde08897020a86d322d1c8428b55

          SHA1

          1a0ae130fba8a2440c928463add8b5a8e24f842e

          SHA256

          90bfec63c041b52d31d1d8a6335a91f68a1c9516cbe4075e03485418ae665f51

          SHA512

          1e7622acd01067c646c48c9b00619eb92adc823cb6bf3394529bf5e982cc37367336c4c48be025bd4fa7e0a1890d6da9830430fd5bbd569241ed530df65d31a2

        • C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build2.exe

          Filesize

          334KB

          MD5

          c6d3d647baad8a5b93b81d2487f4f072

          SHA1

          e9c1105dc41f85d4f7e94d4e004f8427787c8802

          SHA256

          7754125653413cfca3bde887fb2a22f0cd5144ec447bb274c69b005861b70a0a

          SHA512

          55425dc95161e627e19e17f1bb910f958dade0c2b12da5eaad31159f0e2dc5217ff293c52f39d860d399807d5b4a814f1bb24376c58b40cc171d298282052049

        • C:\Users\Admin\AppData\Local\db8b8efe-9e69-4bff-b932-2da8d77c622b\build3.exe

          Filesize

          299KB

          MD5

          41b883a061c95e9b9cb17d4ca50de770

          SHA1

          1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

          SHA256

          fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

          SHA512

          cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

        • C:\Users\Admin\AppData\Local\e77f2409-bdbd-44eb-96ac-2bbb16362dfd\a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1.exe

          Filesize

          730KB

          MD5

          5ae24b94a6f7359ffdea3b2f1270d821

          SHA1

          e497f21c534187587516340cae1eba1388836645

          SHA256

          a104d7ade86ce00cbfd52ea602423490fa2e0aa66f036ca3c77dc942153b83f1

          SHA512

          012d851e336c52b919736f105a5b4b0c59a714e80063495a63417edfceb44a487c9d803e724f9aef03a7cdf4074f13d6375d58eb329e4e9374cbfb2de98fe382

        • memory/32-3-0x00000000021A0000-0x00000000022BB000-memory.dmp

          Filesize

          1.1MB

        • memory/32-1-0x00000000020E0000-0x0000000002175000-memory.dmp

          Filesize

          596KB

        • memory/304-112-0x0000000000880000-0x0000000000980000-memory.dmp

          Filesize

          1024KB

        • memory/312-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/312-17-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/312-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/312-2-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/312-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/780-69-0x0000000000920000-0x0000000000924000-memory.dmp

          Filesize

          16KB

        • memory/780-68-0x0000000000B10000-0x0000000000C10000-memory.dmp

          Filesize

          1024KB

        • memory/1160-48-0x00000000005C0000-0x00000000005F6000-memory.dmp

          Filesize

          216KB

        • memory/1160-47-0x0000000000610000-0x0000000000710000-memory.dmp

          Filesize

          1024KB

        • memory/1344-75-0x0000000000400000-0x0000000000649000-memory.dmp

          Filesize

          2.3MB

        • memory/1344-46-0x0000000000400000-0x0000000000649000-memory.dmp

          Filesize

          2.3MB

        • memory/1344-52-0x0000000000400000-0x0000000000649000-memory.dmp

          Filesize

          2.3MB

        • memory/1344-51-0x0000000000400000-0x0000000000649000-memory.dmp

          Filesize

          2.3MB

        • memory/1452-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1452-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1452-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1452-30-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1452-53-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1452-59-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1452-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1452-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1452-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1452-37-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1760-117-0x0000000000410000-0x00000000004D5000-memory.dmp

          Filesize

          788KB

        • memory/2168-85-0x0000000000BA0000-0x0000000000CA0000-memory.dmp

          Filesize

          1024KB

        • memory/2628-193-0x0000000000BC0000-0x0000000000CC0000-memory.dmp

          Filesize

          1024KB

        • memory/2636-21-0x0000000002030000-0x00000000020CD000-memory.dmp

          Filesize

          628KB

        • memory/3796-139-0x0000000000B60000-0x0000000000C60000-memory.dmp

          Filesize

          1024KB

        • memory/4608-67-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4608-71-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4608-64-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/5004-166-0x0000000000A10000-0x0000000000B10000-memory.dmp

          Filesize

          1024KB