Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    28/02/2024, 23:30

General

  • Target

    river.exe

  • Size

    36.2MB

  • MD5

    dadbc498ff01882ebfba8fe7da4ae5f8

  • SHA1

    3e05361986fc76030bfe20bfcd264accc6857f96

  • SHA256

    dfe856e52dbaec67d8bd5eebc2964e713c0ab6e74d7e4529a99d387068c18adc

  • SHA512

    09807b5c0e06406decc101f986de904995bdc39e99d9de8d69663856a1c046a4712ac8d51d04407d01c7928961b1619e9b5125f9ed4d46e5a672a7ddbed0c715

  • SSDEEP

    786432:GSQts3IKmr2puIha22j6+s7LWB75zuk2k5F0wW8p2OofBHgUb:GSQt+Ifr2pBha22qHWB75ikPztWA2Tfl

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 30 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\river.exe
    "C:\Users\Admin\AppData\Local\Temp\river.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:896
    • C:\Users\Admin\AppData\Local\Temp\river.exe
      "C:\Users\Admin\AppData\Local\Temp\river.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1716
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "ver"
        3⤵
          PID:1452
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "ver"
          3⤵
            PID:1560

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\PIL\_imaging.cp311-win_amd64.pyd

              Filesize

              2.3MB

              MD5

              61e3529342c607a50aef953632b04b71

              SHA1

              ff5caaef380d454e95641554a69c50b3a5f6ac3a

              SHA256

              d85afbdcef2a9e5975367859f28ff2c4a37afc5dac3879bcd755f230bc217060

              SHA512

              91ea39402fd108f20d00485eefd1fd4d5e62e8554e920b24c899d744699a8fa23cc39f3449ef6810898093574cc04e5363867e04887fb898d9485c105ec43fd4

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\VCRUNTIME140.dll

              Filesize

              106KB

              MD5

              49c96cecda5c6c660a107d378fdfc3d4

              SHA1

              00149b7a66723e3f0310f139489fe172f818ca8e

              SHA256

              69320f278d90efaaeb67e2a1b55e5b0543883125834c812c8d9c39676e0494fc

              SHA512

              e09e072f3095379b0c921d41d6e64f4f1cd78400594a2317cfb5e5dca03dedb5a8239ed89905c9e967d1acb376b0585a35addf6648422c7ddb472ce38b1ba60d

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\VCRUNTIME140_1.dll

              Filesize

              48KB

              MD5

              cf0a1c4776ffe23ada5e570fc36e39fe

              SHA1

              2050fadecc11550ad9bde0b542bcf87e19d37f1a

              SHA256

              6fd366a691ed68430bcd0a3de3d8d19a0cb2102952bfc140bbef4354ed082c47

              SHA512

              d95cd98d22ca048d0fc5bca551c9db13d6fa705f6af120bbbb621cf2b30284bfdc7320d0a819bb26dab1e0a46253cc311a370bed4ef72ecb60c69791ed720168

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_asyncio.pyd

              Filesize

              63KB

              MD5

              511a52bcb0bd19eda7aa980f96723c93

              SHA1

              b11ab01053b76ebb60ab31049f551e5229e68ddd

              SHA256

              d1fb700f280e7793e9b0dca33310ef9cd08e9e0ec4f7416854dffaf6f658a394

              SHA512

              d29750950db2ecbd941012d7fbdd74a2bbd619f1a92616a212acb144da75880ce8a29ec3313acbc419194219b17612b27a1833074bbbaa291cdb95b05f8486ff

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_brotli.cp311-win_amd64.pyd

              Filesize

              801KB

              MD5

              d9fc15caf72e5d7f9a09b675e309f71d

              SHA1

              cd2b2465c04c713bc58d1c5de5f8a2e13f900234

              SHA256

              1fcd75b03673904d9471ec03c0ef26978d25135a2026020e679174bdef976dcf

              SHA512

              84f705d52bd3e50ac412c8de4086c18100eac33e716954fbcb3519f4225be1f4e1c3643d5a777c76f7112fae30ce428e0ce4c05180a52842dacb1f5514460006

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_bz2.pyd

              Filesize

              82KB

              MD5

              4438affaaa0ca1df5b9b1cdaa0115ec1

              SHA1

              4eda79eaf3de614d5f744aa9eea5bfcf66e2d386

              SHA256

              ec91e2b4baca31b992d016b84b70f110ce2b1b2dfd54f5e5bef6270ed7d13b85

              SHA512

              6992107ac4d2108e477bc81af667b8b8e5439231e7e9f4b15ce4bce1aeea811bc0f1aaa438be3b0e38597760cb504367512809ee1937c4b538a86724ae543ba6

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_cffi_backend.cp311-win_amd64.pyd

              Filesize

              177KB

              MD5

              210def84bb2c35115a2b2ac25e3ffd8f

              SHA1

              0376b275c81c25d4df2be4789c875b31f106bd09

              SHA256

              59767b0918859beddf28a7d66a50431411ffd940c32b3e8347e6d938b60facdf

              SHA512

              cd5551eb7afd4645860c7edd7b0abd375ee6e1da934be21a6099879c8ee3812d57f2398cad28fbb6f75bba77471d9b32c96c7c1e9d3b4d26c7fc838745746c7f

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_ctypes.pyd

              Filesize

              120KB

              MD5

              6114277c6fc040f68d25ca90e25924cd

              SHA1

              028179c77cb3ba29cd8494049421eaa4900ccd0e

              SHA256

              f07fe92ce85f7786f96a4d59c6ee5c05fe1db63a1889ba40a67e37069639b656

              SHA512

              76e8ebefb9ba4ea8dcab8fce50629946af4f2b3f2f43163f75483cfb0a97968478c8aaef1d6a37be85bfc4c91a859deda6da21d3e753daefe084a203d839353d

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_decimal.pyd

              Filesize

              247KB

              MD5

              be315973aff9bdeb06629cd90e1a901f

              SHA1

              151f98d278e1f1308f2be1788c9f3b950ab88242

              SHA256

              0f9c6cc463611a9b2c692382fe1cdd7a52fea4733ffaf645d433f716f8bbd725

              SHA512

              8ea715438472e9c174dee5ece3c7d9752c31159e2d5796e5229b1df19f87316579352fc3649373db066dc537adf4869198b70b7d4d1d39ac647da2dd7cfc21e8

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_hashlib.pyd

              Filesize

              63KB

              MD5

              1524882af71247adecf5815a4e55366a

              SHA1

              e25014c793c53503bdff9af046140edda329d01b

              SHA256

              6f7742dfdd371c39048d775f37df3bc2d8d4316c9008e62347b337d64ebed327

              SHA512

              5b954bb7953f19aa6f7c65ad3f105b77d37077950fb1b50d9d8d337bdd4b95343bac2f4c9fe17a02d1738d1f87eeef73dbbf5cdddcb470588cbc5a63845b188a

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_lzma.pyd

              Filesize

              155KB

              MD5

              737119a80303ef4eccaa998d500e7640

              SHA1

              328c67c6c4d297ac13da725bf24467d8b5e982e3

              SHA256

              7158c1290ac29169160b3ec94d9c8bcde4012d67a555f325d44b418c54e2cc28

              SHA512

              1c9920e0841a65b01a0b339c5f5254d1039ef9a16fe0c2484a7e2a9048727f2cc081817aa771b0c574fb8d1a5a49dc39798a3c5e5b5e64392e9c168e1827be7c

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_multiprocessing.pyd

              Filesize

              33KB

              MD5

              2ca9fe51bf2ee9f56f633110a08b45cd

              SHA1

              88ba6525c71890a50f07547a5e9ead0754dd85b9

              SHA256

              1d6f1e7e9f55918967a37cbd744886c2b7ee193c5fb8f948132ba40b17119a81

              SHA512

              821551fa1a5aa21f76c4ae05f44ddd4c2daa00329439c6dadc861931fa7bd8e464b4441dfe14383f2bb30c2fc2dfb94578927615b089a303aa39240e15e89de5

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_overlapped.pyd

              Filesize

              49KB

              MD5

              ac053ef737e4f13b02bfa81f9e46170b

              SHA1

              5d8ebeb30671b74d736731696fedc78c89da0e1f

              SHA256

              cb68e10748e2efd86f7495d647a2774cea9f97ad5c6fe179f90dc1c467b9280f

              SHA512

              6ac26f63981dc5e8dfb675880d6c43648e2bbe6711c75dcac20ebe4d8591e88fbfac3c60660ab28602352760b6f5e1cb587075072abd3333522e3e2549bfa02e

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_queue.pyd

              Filesize

              31KB

              MD5

              8bbed19359892f8c95c802c6ad7598e9

              SHA1

              773fca164965241f63170e7a1f3a8fa17f73ea18

              SHA256

              4e5b7c653c1b3dc3fd7519e4f39cc8a2fb2746e0ecdc4e433fe6029f5f4d9065

              SHA512

              22ea7667689a9f049fa34ddae6b858e1af3e646a379d2c5a4aef3e74a4ff1a4109418b363c9be960127f1c7e020aa393a47885bc45517c9e9aebe71ec7cb61a0

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_socket.pyd

              Filesize

              77KB

              MD5

              64a6c475f59e5c57b3f4dd935f429f09

              SHA1

              ca2e0719dc32f22163ae0e7b53b2caadb0b9d023

              SHA256

              d03fa645cde89b4b01f4a2577139fbb7e1392cb91dc26213b3b76419110d8e49

              SHA512

              cf9e03b7b34cc095fe05c465f9d794319aaa0428fe30ab4ddce14ba78e835edf228d11ec016fd31dfe9f09d84b6f73482fb8e0f574d1fd08943c1ec9e0584973

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_ssl.pyd

              Filesize

              172KB

              MD5

              a0b40f1f8fc6656c5637eacacf7021f6

              SHA1

              38813e25ffde1eee0b8154fa34af635186a243c1

              SHA256

              79d861f0670828dee06c2e3523e2f9a2a90d6c6996bde38201425aa4003119f1

              SHA512

              c18855d7c0069fff392d422e5b01fc518bbdf497eb3390c0b333ecac2497cd29abbdae4557e4f0c4e90321fba910fc3e4d235ce62b745fa34918f40fa667b713

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\_tkinter.pyd

              Filesize

              62KB

              MD5

              89f47cd630f7dfa63268fbc52d04f9e9

              SHA1

              0cc250df4c2f44d8ca8820756f9f05df1e893e28

              SHA256

              8e4cab61b3838f9545b5d1e0b287f18c22d360b8e6a8daca4178cc69df78f83d

              SHA512

              bd2406ea0d5396df0153ac22ce55ca49615291ead6419a96e99007ac85059054a718c4f98942e0adb23da85899f145504b79772866d683a9a686fde6ade784e0

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\base_library.zip

              Filesize

              1.4MB

              MD5

              32ede00817b1d74ce945dcd1e8505ad0

              SHA1

              51b5390db339feeed89bffca925896aff49c63fb

              SHA256

              4a73d461851b484d213684f0aadf59d537cba6fe7e75497e609d54c9f2ba5d4a

              SHA512

              a0e070b2ee1347e85f37e9fd589bc8484f206fa9c8f4020de147b815d2041293551e3a14a09a6eb4050cfa1f74843525377e1a99bbdcfb867b61ebddb89f21f7

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\certifi\cacert.pem

              Filesize

              275KB

              MD5

              78d9dd608305a97773574d1c0fb10b61

              SHA1

              9e177f31a3622ad71c3d403422c9a980e563fe32

              SHA256

              794d039ffdf277c047e26f2c7d58f81a5865d8a0eb7024a0fac1164fea4d27cf

              SHA512

              0c2d08747712ed227b4992f6f8f3cc21168627a79e81c6e860ee2b5f711af7f4387d3b71b390aa70a13661fc82806cc77af8ab1e8a8df82ad15e29e05fa911bf

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\libcrypto-3.dll

              Filesize

              4.9MB

              MD5

              7a6a8c2a8c379b111cdceb66b18d687d

              SHA1

              f3b8a4c731fa0145f224112f91f046fddf642794

              SHA256

              8e13b53ee25825b97f191d77b51ed03966f8b435773fa3fbc36f3eb668fc569b

              SHA512

              f2ef1702df861ef55ef397ad69985d62b675d348cab3862f6ca761f1ce3ee896f663a77d7b69b286be64e7c69be1215b03945781450b186fc02cfb1e4cb226b5

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\libffi-8.dll

              Filesize

              38KB

              MD5

              0f8e4992ca92baaf54cc0b43aaccce21

              SHA1

              c7300975df267b1d6adcbac0ac93fd7b1ab49bd2

              SHA256

              eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a

              SHA512

              6e1b223462dc124279bfca74fd2c66fe18b368ffbca540c84e82e0f5bcbea0e10cc243975574fa95ace437b9d8b03a446ed5ee0c9b1b094147cefaf704dfe978

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\libssl-3.dll

              Filesize

              771KB

              MD5

              64acb046fe68d64ee475e19f67253a3c

              SHA1

              d9e66c9437ce6f775189d6fdbd171635193ec4cc

              SHA256

              b21309abd3dbbb1bf8fb6aa3c250fc85d7b0d9984bf4c942d1d4421502f31a10

              SHA512

              f8b583981df528cf4f1854b94eff6f51dd9d4be91e6fa6329a8c4435b705457c868ae40ee030fa54bebb646a37b547bc182c9cbf0df9a07fea03a18cf85c6766

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\pyexpat.pyd

              Filesize

              194KB

              MD5

              cdcf0e74a32ad7dfeda859a0ce4fcb20

              SHA1

              c72b42a59ba5d83e8d481c6f05b917871b415f25

              SHA256

              91fe5b1b2de2847946e5b3f060678971d8127dfd7d2d37603fdcd31bd5c71197

              SHA512

              c26fdf57299b2c6085f1166b49bd9608d2dd8bc804034ebb03fb2bba6337206b6018bf7f74c069493ffae42f2e9d6337f6f7df5306b80b63c8c3a386bce69ea6

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\python3.DLL

              Filesize

              65KB

              MD5

              0e105f62fdd1ff4157560fe38512220b

              SHA1

              99bd69a94b3dc99fe2c0f7bbbcd05aa0bc8cd45c

              SHA256

              803ba8242b409080df166320c05a4402aab6dd30e31c4389871f4b68ca1ad423

              SHA512

              59c0f749ed9c59efdbcd04265b4985b1175fdd825e5a307745531ed2537397e739bc9290fdc3936cfd04f566e28bb76b878f124248b8344cf74f641c6b1101de

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\python311.dll

              Filesize

              4.6MB

              MD5

              8cb810c185ab184cd6ac5e64bdddf16d

              SHA1

              a630cb4ff3548b98e4dc42e247f335cfd287eca9

              SHA256

              e9d48a0e6c056dad720003cd1db4abd64b5bd02b7e5c73f85c6698b3f1bc2e8e

              SHA512

              50d8af529b41531fa2db84933872d6dc67f758552a8ec801c67c01b024659c3c9e8d239d58ac7f5821e879d6ab0734fcf1b3f5b3f7d9ceacf1b6e9be0a25fdb4

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\python311.dll

              Filesize

              4.4MB

              MD5

              c263f26d3554e0460ca3adadc15a13a8

              SHA1

              e4b8dc3e298d6d91c6e47d30225bcd46f7d0a704

              SHA256

              db77d60dacc1a4e00badd3a59f9a9597de892675281fa9cb179b40dedd83d448

              SHA512

              4365f6c773128cf6f009593d8e528c76a2664abccb0376899ade261c65bff731efd83bf248571ead0ef75566fdda17fe071c38edc1aefdbd64a6cb1e6535cdd6

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\pywin32_system32\pythoncom311.dll

              Filesize

              654KB

              MD5

              f98264f2dacfc8e299391ed1180ab493

              SHA1

              849551b6d9142bf983e816fef4c05e639d2c1018

              SHA256

              0fe49ec1143a0efe168809c9d48fe3e857e2ac39b19db3fd8718c56a4056696b

              SHA512

              6bb3dbd9f4d3e6b7bd294f3cb8b2ef4c29b9eff85c0cfd5e2d2465be909014a7b2ecd3dc06265b1b58196892bb04d3e6b0aa4b2ccbf3a716e0ff950eb28db11c

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\pywin32_system32\pywintypes311.dll

              Filesize

              131KB

              MD5

              90b786dc6795d8ad0870e290349b5b52

              SHA1

              592c54e67cf5d2d884339e7a8d7a21e003e6482f

              SHA256

              89f2a5c6be1e70b3d895318fdd618506b8c0e9a63b6a1a4055dff4abdc89f18a

              SHA512

              c6e1dbf25d260c723a26c88ec027d40d47f5e28fc9eb2dbc72a88813a1d05c7f75616b31836b68b87df45c65eef6f3eaed2a9f9767f9e2f12c45f672c2116e72

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\select.pyd

              Filesize

              29KB

              MD5

              653bdccb7af2aa9ccf50cb050fd3be64

              SHA1

              afe0a85425ae911694c250ab4cb1f6c3d3f2cc69

              SHA256

              e24a3e7885df9a18c29ba058c49c3adcf59e4b58107847b98eca365b6d94f279

              SHA512

              07e841fda7a2295380bfa05db7a4699f18c6e639da91d8ee2d126d4f96e4cddaedbd490deb4d2a2e8e5877edfff877693f67a9dc487e29742943e062d7be6277

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\simplejson\_speedups.cp311-win_amd64.pyd

              Filesize

              39KB

              MD5

              c4a494509bf44e06447788b24881c16d

              SHA1

              e01a29b8e2af102ec2f8c88f9b580f004411f9b3

              SHA256

              bc15b60da221f8656cdb201198ab7fa2575ad8d41c357b67b8678f9bbf3961af

              SHA512

              2dec6757e4580657fc1a42d1d83fbfa144570508172990d8f2268292542a93ffe498881bd7fdd26ca83b61e5a861a8a1c692c133c599028f23c1878a746f691e

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\tcl86t.dll

              Filesize

              1.8MB

              MD5

              ac6cd2fb2cd91780db186b8d6e447b7c

              SHA1

              b387b9b6ca5f0a2b70028ab2147789c4fe24ef7a

              SHA256

              a91781fe13548b89817462b00058a75fb0b607ec8ce99d265719ced573ade7b6

              SHA512

              45b24ca07a44d8d90e5efeded2697a37f000b39d305fe63a67292fdd237de3f8efd5e85b139b5702faa695f9f27f12f24ac497e005e2f3c24c141d7cd85305b6

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\tcl\encoding\cp1252.enc

              Filesize

              1KB

              MD5

              e9117326c06fee02c478027cb625c7d8

              SHA1

              2ed4092d573289925a5b71625cf43cc82b901daf

              SHA256

              741859cf238c3a63bbb20ec6ed51e46451372bb221cfff438297d261d0561c2e

              SHA512

              d0a39bc41adc32f2f20b1a0ebad33bf48dfa6ed5cc1d8f92700cdd431db6c794c09d9f08bb5709b394acf54116c3a1e060e2abcc6b503e1501f8364d3eebcd52

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\tk86t.dll

              Filesize

              1.5MB

              MD5

              499fa3dea045af56ee5356c0ce7d6ce2

              SHA1

              0444b7d4ecd25491245824c17b84916ee5b39f74

              SHA256

              20139f4c327711baf18289584fa0c8112f7bb3ba55475bded21f3d107672ed94

              SHA512

              d776749effa241ba1415b28d2fcff1d64ed903569a8c4e56dfddd672a53b2f44119734b1959b72a9b3f4060bb2c67b7dea959cc2d4a8e9f781f17009c6840fc1

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\unicodedata.pyd

              Filesize

              1.1MB

              MD5

              1905b5d0f945499441e8cd58eb123d86

              SHA1

              117e584e6fcc0e8cfc8e24e3af527999f14bac30

              SHA256

              b1788b81fa160e5120451f9252c7745cdde98b8ce59bf273a3dd867bb034c532

              SHA512

              ed88cd7e3259239a0c8d42d95fa2447fc454a944c849fa97449ad88871236fefdafe21dbfa6e9b5d8a54ddf1d5281ec34d314cb93d47ce7b13912a69d284f522

            • C:\Users\Admin\AppData\Local\Temp\_MEI8962\win32\win32api.pyd

              Filesize

              130KB

              MD5

              1d6762b494dc9e60ca95f7238ae1fb14

              SHA1

              aa0397d96a0ed41b2f03352049dafe040d59ad5d

              SHA256

              fae5323e2119a8f678055f4244177b5806c7b6b171b1945168f685631b913664

              SHA512

              0b561f651161a34c37ff8d115f154c52202f573d049681f8cdd7bba2e966bb8203780c19ba824b4a693ef12ef1eeef6aeeef96eb369e4b6129f1deb6b26aaa00