Analysis

  • max time kernel
    117s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    26/05/2024, 01:46

General

  • Target

    2024-05-26_c163188fb6c26c3f22d25389554a86c8_ryuk.exe

  • Size

    10.2MB

  • MD5

    c163188fb6c26c3f22d25389554a86c8

  • SHA1

    45062d37fd2492c92d36b32d1e0ed12d8a65295e

  • SHA256

    ec7ecdf023cb95016132201840d8afe04af6dd3566d0568a9361b6f2ab0ad39d

  • SHA512

    7e147277ba9cd0617309033ccab0235a7d2574d5e7b4f38b0a8a235944bc2c727e7152b7a3e265267dafe3e8cab7bc2c480bb403d036d7c42df11466a7336d40

  • SSDEEP

    196608:0cKfHrGDDpFC4g0AVIGv38ZJ9BIBxIFO48RmU/3ZlsPvHuchVl8Cm5rUSfn:6SDLgtIGiYXIotN3ZWOi6L

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 24 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-26_c163188fb6c26c3f22d25389554a86c8_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_c163188fb6c26c3f22d25389554a86c8_ryuk.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1708
    • C:\Users\Admin\AppData\Local\Temp\2024-05-26_c163188fb6c26c3f22d25389554a86c8_ryuk.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-05-26_c163188fb6c26c3f22d25389554a86c8_ryuk.exe"
      2⤵
      • Loads dropped DLL
      PID:1280

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\VCRUNTIME140.dll

          Filesize

          98KB

          MD5

          6ba0dbcd2db8f44243799c891dbd2a59

          SHA1

          30a2719d4b8667fd237bcfb781660901c993d9fc

          SHA256

          263988a0868053b6b01835cd2959c8f71e3f943610421b269da646f2d9e3b333

          SHA512

          94dea85ef50d55cec0d1bbae4671386ce8ca02e870ce417abfef0a8499fdf0bd0eb5ba38debd07c213f7da39cbea63a18143484b05e9c7ca36b2f68e4520bb4d

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\_ctypes.pyd

          Filesize

          123KB

          MD5

          ffde1baacbe6729ad5246068870915a4

          SHA1

          2d42751140fc244f19dece6b1948b2b67d36bab4

          SHA256

          cc839990fb1020520731c35a183c83c9dc927aa78fa6b149a92a39e9d156c8b8

          SHA512

          1ac3ec986c55af37eb93d35a15e8a64726e5154240c0c5aac8286f7e347c678482ec65c62b454cf237023253642335ce6b3f6c0cc084e1527e61d48aaf7752f1

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\_socket.pyd

          Filesize

          77KB

          MD5

          fc47a3b4dc7353591970a20678b90a81

          SHA1

          5ca5436e0c66f468bb48b5ea16c69125fcc34bea

          SHA256

          4e7ee0ecf839c42d96c53309384737e8f84bb5e90ecd20d511cc3fc6ec135f44

          SHA512

          8f52f33ce49bc38a9356d46c63aef4f8f05d491377f4969f52fd84f83712faed3d9637044d27583bf06fc52687667b630ba8d2eb8ee27f4a810520df5499b725

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-core-file-l1-2-0.dll

          Filesize

          18KB

          MD5

          63f88fa59f6ced6ec5bc50b5407b1fc2

          SHA1

          9806cd443812e7939c4d95e3c583c2785ea165b1

          SHA256

          a179666b529fc407fd16be148f5f221fd7774773e80a94d747091aca7d390da4

          SHA512

          bef016e0cccb71ab6efd357bbcc3e4f03fe8cb1392e022689aee2048afa3f20192dd2b1496d763cdea81264c644bd30cd40c7976d95ebf27882ed434b74e03e9

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-core-file-l2-1-0.dll

          Filesize

          18KB

          MD5

          5b99824d6509fe5b4f0dc09c3706e4b9

          SHA1

          d5b08505f9359be50f45449b7d46da42b00da7c7

          SHA256

          2771bf5156cdaf5dddc234254dc200064c2643ea2368807a965f5574153b4c08

          SHA512

          f5c604d95b056b71d801ac9b84d7127718cd9cfab8fffb7524c9c8a919e8a24e3b55d618931302c4be83560bc95871db6ecb9ec79fa254e235bee55d32036e67

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-core-localization-l1-2-0.dll

          Filesize

          20KB

          MD5

          5d32a3644d850032038b55546b6d6665

          SHA1

          faeeb777ce0af9716e0e534ba3846051e52e3ab6

          SHA256

          bc3972ea34c0df384e6b1196cdf88c805f7363949e7c92d5cf457fa5114d4512

          SHA512

          a14b10468159b67ff7af52f7c8248995d528341000718069734017a079278d0248d76b369dad8b1c20f0b4480ae55d9e5b48ded02a12a83a943def9a4cc3436d

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-core-processthreads-l1-1-1.dll

          Filesize

          18KB

          MD5

          d4148c6bc8c9881eedfb64c87375f629

          SHA1

          485d36a00bdeb09dfc3cb87ed239b0f750d68f16

          SHA256

          6a8ac79a755982c408b86ac6876d0f861c96ad7b3ce203b8951d7d278b113f20

          SHA512

          67e75d666f9ec431049e01a883a9e96472b5489929d9a81fff7d1c8518b3980eb9a85c5f510c9daa2bd38e937cad307afbfa11d904b1c554444fd5b174d52a7b

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-core-timezone-l1-1-0.dll

          Filesize

          18KB

          MD5

          75ab723020ac262b6b5669b9be0239c4

          SHA1

          fa6672eb6ca5f2ba3cd1764a98e1c8875d307866

          SHA256

          af9bb3ff8b02b16a5ad1897db329bb934d07dc081984044373f2d1ac03532907

          SHA512

          83b7ccb5c5f550178e72741fa4cdfea55b4c55fd0fca3947618089871872b824cf0e59da12ab342559e3a34d86d98d855064b651a3168c1cfc583d5d4a47308f

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-conio-l1-1-0.dll

          Filesize

          19KB

          MD5

          e92cfdb8c9c51a6c71c5c54806523e90

          SHA1

          ebdb0e58d63a1d7be71fad242ffb7720ae0e4fd3

          SHA256

          a808e1f0f9c07ed2f8a79e3fedf5d38f609f7d0133bf389297792bbdadab4ad9

          SHA512

          2f1dfb3f1d7116a1600d646daeb16cfcc3fb316d7ca1cd2a2f43c9a75778fc794a972b7c7a51cad7ace0ed0a4596b0cbc89438f2fd509307703e718aabed4f38

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-convert-l1-1-0.dll

          Filesize

          22KB

          MD5

          ed15ef84534e2fa66367e6c4c9cb7cc9

          SHA1

          aec86397eec95ee4e9f79242b4463a24e41d2059

          SHA256

          a1393aeb73c32caa5052a76897558b5475c1f396c5476387ba8d7bf3f471bd21

          SHA512

          e3196e418205eec8e2b2f735437f92b3e563c753fedba99e8944a7e020cca97ed8de5226933d367f60bdbaf4a01dba9d033b92aa1c0a5724eb44dcc76140061d

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-environment-l1-1-0.dll

          Filesize

          18KB

          MD5

          bbe2aefb77c6b261bac6b26e512a6e7d

          SHA1

          18a50ffd595499643d443b983d17f76ef5908d35

          SHA256

          5efa4dfbb7da525ee1da0f011913b8846cca53ac7cd23986e5170957e05dc277

          SHA512

          2fa82403df54e4088c89f3b5df90d91dab968616a7c75f99d4b63d708659999651ff66ca8a4dec6452a0126830c6ac90666e93acda7062e6643510aab65801bd

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-filesystem-l1-1-0.dll

          Filesize

          20KB

          MD5

          17a90b88c1b5de0ba44b545decb82a6e

          SHA1

          1977ffc8229b6595a3fad639b4f51700e462da65

          SHA256

          9e997705299430dbb57b202d81d5719ef9d5270ade741f1bbf2e2ad40aea087c

          SHA512

          0e40be7a8ef7f9fd80ee3c9803bec5ab4180bb8a7d752943963888d5a4554c5689af5cefeb329d67b0912587f98f5d3761dd73c71babfb2dcfc4b57494a35846

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-heap-l1-1-0.dll

          Filesize

          19KB

          MD5

          04936cba5f2d9ba40c3e266824c231e5

          SHA1

          76ffd8c1e2ddfa165e653b86aba7737e0c57e8a8

          SHA256

          3f93421fc454937c6f35f48818d72b8e39dba5d0fbc532dc83dca55f3d203977

          SHA512

          9f6a69a90a6a4d572f43500f1942b49432f4f9544afc1a2fa998f8c0a714bec87d87c6fa69a5d21385e8e06c3541ada3b79f0b8b1806035b5e1338f9ed40238d

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-locale-l1-1-0.dll

          Filesize

          18KB

          MD5

          35e02a5275ed2f085378cb8176084b2b

          SHA1

          585c458870b919d700675e215005154852465ca0

          SHA256

          ec9c2a143354de7813cec1e28dc3d8e2ca2be86731dc8585fa8f8afdc2bc888e

          SHA512

          7d297ba6e3c73fcad574f154b90e2f408c55e8b216e193736753ef681baf2cb807f0bc61419e1d78b44332071cc06fa1d4cbf2b41dc94ba2f199b4fcadc27df4

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-math-l1-1-0.dll

          Filesize

          27KB

          MD5

          cb35f30dd6a029b01062ba83519669b7

          SHA1

          c48a8690dca1fa879ff755d462b0932877d81269

          SHA256

          ef00bce29046e7a8fc02c457eb7f3f3d6a5a8b8fce82458d9880f0306b573ebf

          SHA512

          98735c93298953d6a9e00f7401a59c05982431f425ddeb0edb830e98b81fafba80fb6978cafcf1c134aa3b9f018bc7eb04b3f67d83ee298cc8bfdf5a7a1eceaf

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-process-l1-1-0.dll

          Filesize

          19KB

          MD5

          e6994ee954ad1f87ac692276d5d88b49

          SHA1

          7d7f71ce40b8d9a2da42fbb541118eb7df42744d

          SHA256

          a8a5b4a98c97c86b03d450fca7425da03e60e6a07fbc1ff95f8e49c74de69b13

          SHA512

          51ed50386a6a1938a37784aca93eb7dd63e7cb664ee48c8e1b6fe006003c3962fadb7d7e7073d23315025d25fad704f8d17ba5c65228474b5e4068e89ee0ad5e

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-runtime-l1-1-0.dll

          Filesize

          22KB

          MD5

          a195ec3ec8a4b1338533d1f492f83ba8

          SHA1

          d0c50ce07aad05131a660e2656fb081705ec1eb6

          SHA256

          c2f1173a9f345edb990b99d59af4db54c66ab3769215c2ad7c1b51cb26586c0f

          SHA512

          1d222fe1b30821c6d0da1bb4a2999b1c7517bec5c8a9eb1dca0c9db73e3e42f9e60f630b9ea47e13249c35a8ef2deb6143bb5b1f90ba015d05b67c2dd8387780

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-stdio-l1-1-0.dll

          Filesize

          24KB

          MD5

          4d91df0a5080be0b5a041aaca7010d73

          SHA1

          fa202c72fcec9abdfac4bfd099f8bac9f32ef462

          SHA256

          61c050402388f3edda6aff3388ad0952b79a8afb8f739da3426b86939ba3d784

          SHA512

          575ee7b6374a2f4ce5d1c015c01acbccdfd06561c33587d871de87abb328a406a02b361bab7a886bfa9c37b69673aa200b9b88e45bb505bcf9136b9da1303411

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-string-l1-1-0.dll

          Filesize

          24KB

          MD5

          c0e1da84e6ed196820a06ddc0f773edb

          SHA1

          1c41607d7b4dd121775892beac4d9c4f7c22ad5d

          SHA256

          ddbac73c9505645e7526e60b4aaa81296b4e8efd34aa9e81b7590f52f8adaf90

          SHA512

          cc3768f3c0c37288b19f791a02b23a6fd3502fddfefabbb2dc8348bdc816f00173091a161e950dec1a057be53c12d6cd3fd394ba466c225df09cf3cdcf40412f

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\api-ms-win-crt-time-l1-1-0.dll

          Filesize

          20KB

          MD5

          47a1f3d4f55113376e2eed5305447e74

          SHA1

          6914cf19b690a8ef469b4e99983f9436727cb1ef

          SHA256

          0b9418bc7ceed49a75799a0808f16252e151106fbe98dfda44bad079dbc1887e

          SHA512

          d5b9e1f50228af63fa1f7e830410306e8d3ad2691efc4f9f8631db401449a7cddd1c37b31564ee0b9a6f6375a91531f513cd3e6c769ec90443256198739e7e9e

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\base_library.zip

          Filesize

          762KB

          MD5

          24a92735f7dbeb4c6c52ec72f71db4a6

          SHA1

          7ae2d1abed5846cb6ccd4e8396aea29d2259f503

          SHA256

          be27c83ddb0ee74118ce5ac75016e70962cccbc552542bd5004f5c9a3268dc26

          SHA512

          d260a29e44add93eea96d4839b8c08ca418b97e97ccd5d7af7bb02f08ec26bec42b3f8cd797555f3d389cfd44fc9b86a4844578682deac233b99098a62b0f900

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\client.exe.manifest

          Filesize

          1KB

          MD5

          19123ef84744f91e1d8331f658110061

          SHA1

          38238ee8b1959aabf67a5da38f3b99056d4c3f76

          SHA256

          a43b9fd4ef7170ba0a191f73079e95236be594c78932eb939effa6aaae152789

          SHA512

          9ccf482bccb42a5a2906ecb0d5744f6e96e23b753e4173ac9f9c34c98bf8e7dc9d20280c8871f51bccc15e6e869d2b639415d180b87a7951f91bd7e6f65683d1

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\libffi-7.dll

          Filesize

          32KB

          MD5

          eef7981412be8ea459064d3090f4b3aa

          SHA1

          c60da4830ce27afc234b3c3014c583f7f0a5a925

          SHA256

          f60dd9f2fcbd495674dfc1555effb710eb081fc7d4cae5fa58c438ab50405081

          SHA512

          dc9ff4202f74a13ca9949a123dff4c0223da969f49e9348feaf93da4470f7be82cfa1d392566eaaa836d77dde7193fed15a8395509f72a0e9f97c66c0a096016

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\python38.dll

          Filesize

          4.0MB

          MD5

          c0ed63bf515d04803906e1b703e9cb86

          SHA1

          61f9a465d7a782aedfd5e2b1a9dc8bff6c103b5a

          SHA256

          24bfc999a733d4759ca40425610555f597b1d015f87ef5f84e15c665297247a4

          SHA512

          78384c34cefc40cb86913dffdc6a360668467731a8a3678d5f8377d8ae63d244b45506b0b6e2498825b53abe8fd84d2b75b3e9fef3703fead90183ace433e70a

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\select.pyd

          Filesize

          26KB

          MD5

          f4887f1d906dc336fe0c3f7dbb720ca3

          SHA1

          67def676ad3569029d2a357a40a138fc7570bdcc

          SHA256

          36552bc64127d4866c657c9b74c0399baad70957a5380896fd8202e3a6bb7b4f

          SHA512

          51006d164c2512adfab92d22be5fed7c093cb647821045a6cdfd2ed7a30d94e620a446b8434b3e91d5544ef737e1492f3dc6c29cadbfdfa5e41df7fb5106a301

        • C:\Users\Admin\AppData\Local\Temp\_MEI17082\ucrtbase.dll

          Filesize

          969KB

          MD5

          60606071bf033275377fd66a2a7de09c

          SHA1

          2475cdfd25427be07b3662e99c185cc49df35c6e

          SHA256

          4eace6c996a2ed322bd43810db9fb64e20114682f4b71fcd4031215f803f5f47

          SHA512

          bf9fbe3d162388be71d866a818f0f583ffb479fa151e62125ff200d40902e6ab1e61822e85ca01c319a1304fd899390ecc7d9ba3b3b061eac84cd23d644b699e