Analysis

  • max time kernel
    13s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21/05/2024, 20:28

General

  • Target

    PolarCrasher.exe

  • Size

    11.6MB

  • MD5

    a4709aeaabeccbd0bc3d148de40e6984

  • SHA1

    b8644350498f5f880f36cebf3d71ed35579793d6

  • SHA256

    1f16055ea15440bad89eb1d35b44d67702d150a3a3f10188f695a7a26d359cf2

  • SHA512

    6ccea7bd4d9834e3dca2a9013baf030f3cc06c6c995fef622a225b9e95f07b8908a8bda92edc3812b64b6a22783e402228e527c1ced545945bffa7a570b0460a

  • SSDEEP

    196608:KhPg+T0p1W903eV4QRIMToEuGxgh858F0ibfU9au5p0W8/LQhoANNngABwAbk9YB:+T0vW+eGQRIMTozGxu8C0ibfEau5qW8u

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 10 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
    "C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4272
    • C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
      "C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
      2⤵
      • Loads dropped DLL
      PID:3380
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:3584

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

    Filesize

    10KB

    MD5

    18951ad4190ed728ba23e932e0c6e0db

    SHA1

    fa2d16fcbc3defd07cb8f21d8ea4793a21f261f0

    SHA256

    66607b009c345a8e70fc1e58ab8a13bbea0e370c8d75f16d2cce5b876a748915

    SHA512

    a67237089efa8615747bdc6cfe0afc977dc54cfd624a8d2e5124a441c204f1ec58ee7cfbbc105ddc2c18d4f254b9e124d71630bcdba0253d41a96890104f2fff

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\VCRUNTIME140.dll

    Filesize

    116KB

    MD5

    be8dbe2dc77ebe7f88f910c61aec691a

    SHA1

    a19f08bb2b1c1de5bb61daf9f2304531321e0e40

    SHA256

    4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83

    SHA512

    0da644472b374f1da449a06623983d0477405b5229e386accadb154b43b8b083ee89f07c3f04d2c0c7501ead99ad95aecaa5873ff34c5eeb833285b598d5a655

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_bz2.pyd

    Filesize

    82KB

    MD5

    90f58f625a6655f80c35532a087a0319

    SHA1

    d4a7834201bd796dc786b0eb923f8ec5d60f719b

    SHA256

    bd8621fcc901fa1de3961d93184f61ea71068c436794af2a4449738ccf949946

    SHA512

    b5bb1ecc195700ad7bea5b025503edd3770b1f845f9beee4b067235c4e63496d6e0b19bdd2a42a1b6591d1131a2dc9f627b2ae8036e294300bb6983ecd644dc8

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_ctypes.pyd

    Filesize

    122KB

    MD5

    452305c8c5fda12f082834c3120db10a

    SHA1

    9bab7b3fd85b3c0f2bedc3c5adb68b2579daa6e7

    SHA256

    543ce9d6dc3693362271a2c6e7d7fc07ad75327e0b0322301dd29886467b0b0e

    SHA512

    3d52afdbc8da74262475abc8f81415a0c368be70dbf5b2bd87c9c29ca3d14c44770a5b8b2e7c082f3ece0fd2ba1f98348a04b106a48d479fa6bd062712be8f7c

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_decimal.pyd

    Filesize

    247KB

    MD5

    f78f9855d2a7ca940b6be51d68b80bf2

    SHA1

    fd8af3dbd7b0ea3de2274517c74186cb7cd81a05

    SHA256

    d4ae192bbd4627fc9487a2c1cd9869d1b461c20cfd338194e87f5cf882bbed12

    SHA512

    6b68c434a6f8c436d890d3c1229d332bd878e5777c421799f84d79679e998b95d2d4a013b09f50c5de4c6a85fcceb796f3c486e36a10cbac509a0da8d8102b18

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_hashlib.pyd

    Filesize

    64KB

    MD5

    8baeb2bd6e52ba38f445ef71ef43a6b8

    SHA1

    4132f9cd06343ef8b5b60dc8a62be049aa3270c2

    SHA256

    6c50c9801a5caf0bb52b384f9a0d5a4aa182ca835f293a39e8999cf6edf2f087

    SHA512

    804a4e19ea622646cea9e0f8c1e284b7f2d02f3620199fa6930dbdadc654fa137c1e12757f87c3a1a71ceff9244aa2f598ee70d345469ca32a0400563fe3aa65

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_lzma.pyd

    Filesize

    155KB

    MD5

    cf8de1137f36141afd9ff7c52a3264ee

    SHA1

    afde95a1d7a545d913387624ef48c60f23cf4a3f

    SHA256

    22d10e2d6ad3e3ed3c49eb79ab69a81aaa9d16aeca7f948da2fe80877f106c16

    SHA512

    821985ff5bc421bd16b2fa5f77f1f4bf8472d0d1564bc5768e4dbe866ec52865a98356bb3ef23a380058acd0a25cd5a40a1e0dae479f15863e48c4482c89a03f

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_queue.pyd

    Filesize

    31KB

    MD5

    5aa4b057ba2331eed6b4b30f4b3e0d52

    SHA1

    6b9db113c2882743984c3d8b70ec49fc4a136c23

    SHA256

    d43dca0e00c3c11329b68177e967cf5240495c4786f5afa76ac4f267c3a5cdb9

    SHA512

    aa5aa3285ea5c177eca055949c5f550dbd2d2699202a29efe2077213cbc95fff2a36d99eecce249ac04d95baf149b3d8c557a67fc39ead3229f0b329e83447b7

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_socket.pyd

    Filesize

    81KB

    MD5

    439b3ad279befa65bb40ecebddd6228b

    SHA1

    d3ea91ae7cad9e1ebec11c5d0517132bbc14491e

    SHA256

    24017d664af20ee3b89514539345caac83eca34825fcf066a23e8a4c99f73e6d

    SHA512

    a335e1963bb21b34b21aef6b0b14ba8908a5343b88f65294618e029e3d4d0143ea978a5fd76d2df13a918ffab1e2d7143f5a1a91a35e0cc1145809b15af273bd

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_ssl.pyd

    Filesize

    173KB

    MD5

    6774d6fb8b9e7025254148dc32c49f47

    SHA1

    212e232da95ec8473eb0304cf89a5baf29020137

    SHA256

    2b6f1b1ac47cb7878b62e8d6bb587052f86ca8145b05a261e855305b9ca3d36c

    SHA512

    5d9247dce96599160045962af86fc9e5439f66a7e8d15d1d00726ec1b3b49d9dd172d667380d644d05cb18e45a5419c2594b4bcf5a16ea01542ae4d7d9a05c6e

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_tkinter.pyd

    Filesize

    62KB

    MD5

    eb6bbe091b6e2b0ff53ad736fdfcd456

    SHA1

    fbc73063986f0c1340b1c5c40c22b7dd47c7f1a3

    SHA256

    198e2cee4502f69dfff2dd029308febce3d1e1d4dd9fe122e891bf95c7910d54

    SHA512

    a928c313f0617d7409a96099cbd01b5811f2618c181725cecd45bcf2b36e436578aeedadc0405f8727b966cc2cdf2fcd9788df572d7cb39ebb9e5f532533b4c5

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\_wmi.pyd

    Filesize

    35KB

    MD5

    cb0564bc74258cb1320c606917ce5a71

    SHA1

    5b2bfc0d997cc5b7d985bfadddbfc180cb01f7cf

    SHA256

    0342916a60a7b39bbd5753d85e1c12a4d6f990499753d467018b21cefa49cf32

    SHA512

    43f3afa9801fcf5574a30f4d3e7ae6aff65c7716462f9aba5bc8055887a44bf38fba121639d8b31427e738752fe3b085d1d924de2633f4c042433e1960023f38

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\base_library.zip

    Filesize

    1.3MB

    MD5

    ccee0ea5ba04aa4fcb1d5a19e976b54f

    SHA1

    f7a31b2223f1579da1418f8bfe679ad5cb8a58f5

    SHA256

    eeb7f0b3e56b03454868411d5f62f23c1832c27270cee551b9ca7d9d10106b29

    SHA512

    4f29ac5df211fef941bd953c2d34cb0c769fb78475494746cb584790d9497c02be35322b0c8f5c14fe88d4dd722733eda12496db7a1200224a014043f7d59166

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\libcrypto-3.dll

    Filesize

    4.9MB

    MD5

    51e8a5281c2092e45d8c97fbdbf39560

    SHA1

    c499c810ed83aaadce3b267807e593ec6b121211

    SHA256

    2a234b5aa20c3faecf725bbb54fb33f3d94543f78fa7045408e905593e49960a

    SHA512

    98b91719b0975cb38d3b3c7b6f820d184ef1b64d38ad8515be0b8b07730e2272376b9e51631fe9efd9b8a1709fea214cf3f77b34eeb9fd282eb09e395120e7cb

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\libffi-8.dll

    Filesize

    38KB

    MD5

    0f8e4992ca92baaf54cc0b43aaccce21

    SHA1

    c7300975df267b1d6adcbac0ac93fd7b1ab49bd2

    SHA256

    eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a

    SHA512

    6e1b223462dc124279bfca74fd2c66fe18b368ffbca540c84e82e0f5bcbea0e10cc243975574fa95ace437b9d8b03a446ed5ee0c9b1b094147cefaf704dfe978

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\libssl-3.dll

    Filesize

    771KB

    MD5

    bfc834bb2310ddf01be9ad9cff7c2a41

    SHA1

    fb1d601b4fcb29ff1b13b0d2ed7119bd0472205c

    SHA256

    41ad1a04ca27a7959579e87fbbda87c93099616a64a0e66260c983381c5570d1

    SHA512

    6af473c7c0997f2847ebe7cee8ef67cd682dee41720d4f268964330b449ba71398fda8954524f9a97cc4cdf9893b8bdc7a1cf40e9e45a73f4f35a37f31c6a9c3

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\pyexpat.pyd

    Filesize

    194KB

    MD5

    e2d1c738d6d24a6dd86247d105318576

    SHA1

    384198f20724e4ede9e7b68e2d50883c664eee49

    SHA256

    cdc09fbae2f103196215facd50d108be3eff60c8ee5795dcc80bf57a0f120cdf

    SHA512

    3f9cb64b4456438dea82a0638e977f233faf0a08433f01ca87ba65c7e80b0680b0ec3009fa146f02ae1fdcc56271a66d99855d222e77b59a1713caf952a807da

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\python312.dll

    Filesize

    6.7MB

    MD5

    48ebfefa21b480a9b0dbfc3364e1d066

    SHA1

    b44a3a9b8c585b30897ddc2e4249dfcfd07b700a

    SHA256

    0cc4e557972488eb99ea4aeb3d29f3ade974ef3bcd47c211911489a189a0b6f2

    SHA512

    4e6194f1c55b82ee41743b35d749f5d92a955b219decacf9f1396d983e0f92ae02089c7f84a2b8296a3062afa3f9c220da9b7cd9ed01b3315ea4a953b4ecc6ce

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\select.pyd

    Filesize

    29KB

    MD5

    e1604afe8244e1ce4c316c64ea3aa173

    SHA1

    99704d2c0fa2687997381b65ff3b1b7194220a73

    SHA256

    74cca85600e7c17ea6532b54842e26d3cae9181287cdf5a4a3c50af4dab785e5

    SHA512

    7bf35b1a9da9f1660f238c2959b3693b7d9d2da40cf42c6f9eba2164b73047340d0adff8995049a2fe14e149eba05a5974eee153badd9e8450f961207f0b3d42

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\tcl86t.dll

    Filesize

    1.7MB

    MD5

    b0261de5ef4879a442abdcd03dedfa3c

    SHA1

    7f13684ff91fcd60b4712f6cf9e46eb08e57c145

    SHA256

    28b61545d3a53460f41c20dacf0e0df2ba687a5c85f9ed5c34dbfc7ed2f23e3e

    SHA512

    e39a242e321e92761256b2b4bdde7f9d880b5c64d4778b87fa98bf4ac93a0248e408a332ae214b7ffd76fb9d219555dc10ab8327806d8d63309bf6d147ebbd59

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\tk86t.dll

    Filesize

    1.5MB

    MD5

    ef0d7469a88afb64944e2b2d91eb3e7f

    SHA1

    a26fd3de8da3e4aec417cebfa2de78f9ba7cf05b

    SHA256

    23a195e1e3922215148e1e09a249b4fe017a73b3564af90b0f6fd4d9e5dda4da

    SHA512

    909f0b73b64bad84b896a973b58735747d87b5133207cb3d9fa9ce0c026ee59255b7660c43bb86b1ddeef9fbb80b2250719fd379cff7afd9dbec6f6a007ed093

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\unicodedata.pyd

    Filesize

    1.1MB

    MD5

    fc47b9e23ddf2c128e3569a622868dbe

    SHA1

    2814643b70847b496cbda990f6442d8ff4f0cb09

    SHA256

    2a50d629895a05b10a262acf333e7a4a31db5cb035b70d14d1a4be1c3e27d309

    SHA512

    7c08683820498fdff5f1703db4ad94ad15f2aa877d044eddc4b54d90e7dc162f48b22828cd577c9bb1b56f7c11f777f9785a9da1867bf8c0f2b6e75dc57c3f53

  • C:\Users\Admin\AppData\Local\Temp\_MEI42722\zlib1.dll

    Filesize

    141KB

    MD5

    b4a0b3d5abc631e95c074eee44e73f96

    SHA1

    c22c8baa23d731a0e08757d0449ca3dd662fd9e6

    SHA256

    c89c8a2fcf11d8191c7690027055431906aae827fc7f443f0908ad062e7e653e

    SHA512

    56bafd1c6c77343f724a8430a1f496b4a3160faa9a19ea40796438ae67d6c45f8a13224dcf3d1defb97140a2e47a248dd837801a8cb4674e7890b495aeec538e