Analysis

  • max time kernel
    141s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    27/01/2024, 06:19

General

  • Target

    797e3e1110e0486621a7b615ef234f1f.exe

  • Size

    723KB

  • MD5

    797e3e1110e0486621a7b615ef234f1f

  • SHA1

    a89750f80cdb397fe9772544e6ddc3455efc15b0

  • SHA256

    bd12c49f8042d22bd417a8012a9d1dd5c086a5b0244d4eac163c2f9b730b8eec

  • SHA512

    c0c20b60130a6fc2cf822e50feb8ea2132a9ff2bbc1b11377db41b2df36aeffa5b262da5680fa8759cb472173e9e60c5ab544226afe1971123c7eb143b1e0266

  • SSDEEP

    12288:Nq2H/Pr6frpwp4qGwIWyr1FS6TvNK5LODnt8uEPgVpqb+EyyzCOUdEuyKBURh:TfefldtS6TlgOyRb+EyaChEuyK0

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 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\797e3e1110e0486621a7b615ef234f1f.exe
    "C:\Users\Admin\AppData\Local\Temp\797e3e1110e0486621a7b615ef234f1f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1840
    • C:\Users\Admin\AppData\Local\Temp\797e3e1110e0486621a7b615ef234f1f.exe
      "C:\Users\Admin\AppData\Local\Temp\797e3e1110e0486621a7b615ef234f1f.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2384
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e2512cd8-54a2-4b88-85c9-73e23caa8092" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2824
      • C:\Users\Admin\AppData\Local\Temp\797e3e1110e0486621a7b615ef234f1f.exe
        "C:\Users\Admin\AppData\Local\Temp\797e3e1110e0486621a7b615ef234f1f.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2224
        • C:\Users\Admin\AppData\Local\Temp\797e3e1110e0486621a7b615ef234f1f.exe
          "C:\Users\Admin\AppData\Local\Temp\797e3e1110e0486621a7b615ef234f1f.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          PID:2512

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          1KB

          MD5

          117581c8a2ff4fce10d77d2f81dd0cdc

          SHA1

          a0fbeeef3c720485767906ddf3d699f78bd3a692

          SHA256

          14924e43f9d37b1bfca5c3d878e9ad833b26ce047840565801eb2aa2257770e2

          SHA512

          4230d5299fb961cb1d2ea3bd971e3df2cc3bdd10ff4331e672bfb4ab49a68f757df0d433dc0cfc8f07a6b6e0b51166cb571eefa93eb9a41f98197fcce5eec9a8

        • 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

          9b7c24719412e6c894f22268580efe3f

          SHA1

          a05377aedd57079dab7f568eed23774b713cfc60

          SHA256

          05ec0e390a9362f23ced706b37c1ff553639981ba6e47c6b4e8df4c0cba0a2ec

          SHA512

          ab551e7ec7ed479c4feef24df88d80658ef255f4c260c4f4b10bbad8a241c5ee2102b54f3d6eb72e7cfd7b29bf6d147dcd2c1f03ce95db2c0061ad79e20561d1

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

          Filesize

          344B

          MD5

          3b7548c1ef185f0f11a6151ca9a3ffc3

          SHA1

          a951e51b9fb6bd790fb8a8b634452608319eec06

          SHA256

          4a1241dbc2a3b0298b002914de9e0bac5cff94a35e7b04029c4e105bdc7c9c15

          SHA512

          ca373f9b3c3cbbe07490fb865695dad99a44118f465c25cbc85dd1692f34e2d49ec4c1295d0fbecdd1bcda6d96a22e53d874af398b03ce047db5dd49e68d3167

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

          Filesize

          392B

          MD5

          510e2ee30caf3f8d7733fc95054d2818

          SHA1

          4d3dbd9bc3f2d978a720cdc52528bebadad22fc7

          SHA256

          d12bbb1517f258d01fbda8ef8fc396c4e0f0895c9b8b47e39891e603c23a03a7

          SHA512

          03b6911f8e8dddfd47fcf478a86ae57425e6b4be97a243a9f349494da43f22b118aec30a266588cddda64bdef72a931740010b5f66a4a908729e847c6620c6b5

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

          Filesize

          242B

          MD5

          1695b9dafae2707291cc2eee2b30eafa

          SHA1

          750f9698e9fd7cfab7244a75d351c31f07c0f64e

          SHA256

          baf6b46471994b837b6b6b17bf627f9f0b5803e231279595890be1b9f581b629

          SHA512

          f5ed38fc56f7b0ab229948e2a7b1efafc0d826ef750c31ff221a96f3f0e54c2f376d766d1e22cd3e53ecb8df92374424c7c6c6201796bfe314d2fd70c1ef7c29

        • C:\Users\Admin\AppData\Local\Temp\Tar3AEF.tmp

          Filesize

          171KB

          MD5

          9c0c641c06238516f27941aa1166d427

          SHA1

          64cd549fb8cf014fcd9312aa7a5b023847b6c977

          SHA256

          4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

          SHA512

          936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

        • C:\Users\Admin\AppData\Local\e2512cd8-54a2-4b88-85c9-73e23caa8092\797e3e1110e0486621a7b615ef234f1f.exe

          Filesize

          723KB

          MD5

          797e3e1110e0486621a7b615ef234f1f

          SHA1

          a89750f80cdb397fe9772544e6ddc3455efc15b0

          SHA256

          bd12c49f8042d22bd417a8012a9d1dd5c086a5b0244d4eac163c2f9b730b8eec

          SHA512

          c0c20b60130a6fc2cf822e50feb8ea2132a9ff2bbc1b11377db41b2df36aeffa5b262da5680fa8759cb472173e9e60c5ab544226afe1971123c7eb143b1e0266

        • memory/1840-4-0x0000000004580000-0x000000000469B000-memory.dmp

          Filesize

          1.1MB

        • memory/1840-1-0x0000000000340000-0x00000000003D2000-memory.dmp

          Filesize

          584KB

        • memory/1840-0-0x0000000000340000-0x00000000003D2000-memory.dmp

          Filesize

          584KB

        • memory/2224-47-0x00000000002F0000-0x0000000000382000-memory.dmp

          Filesize

          584KB

        • memory/2224-49-0x00000000002F0000-0x0000000000382000-memory.dmp

          Filesize

          584KB

        • memory/2384-46-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2384-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2384-7-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2384-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2384-8-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-74-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-73-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-54-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-55-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-75-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-78-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-80-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-81-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-82-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2512-83-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB