Analysis Overview
SHA256
1f16055ea15440bad89eb1d35b44d67702d150a3a3f10188f695a7a26d359cf2
Threat Level: Shows suspicious behavior
The file PolarCrasher.exe was found to be: Shows suspicious behavior.
Malicious Activity Summary
Loads dropped DLL
Detects Pyinstaller
Unsigned PE
Modifies registry class
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-05-21 20:28
Signatures
Detects Pyinstaller
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-21 20:28
Reported
2024-05-21 20:28
Platform
win11-20240419-en
Max time kernel
13s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000_Classes\Local Settings\MuiCache | C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4272 wrote to memory of 3380 | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe |
| PID 4272 wrote to memory of 3380 | N/A | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe | C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
"C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
"C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
Network
Files
C:\Users\Admin\AppData\Local\Temp\_MEI42722\python312.dll
| MD5 | 48ebfefa21b480a9b0dbfc3364e1d066 |
| SHA1 | b44a3a9b8c585b30897ddc2e4249dfcfd07b700a |
| SHA256 | 0cc4e557972488eb99ea4aeb3d29f3ade974ef3bcd47c211911489a189a0b6f2 |
| SHA512 | 4e6194f1c55b82ee41743b35d749f5d92a955b219decacf9f1396d983e0f92ae02089c7f84a2b8296a3062afa3f9c220da9b7cd9ed01b3315ea4a953b4ecc6ce |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\VCRUNTIME140.dll
| MD5 | be8dbe2dc77ebe7f88f910c61aec691a |
| SHA1 | a19f08bb2b1c1de5bb61daf9f2304531321e0e40 |
| SHA256 | 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83 |
| SHA512 | 0da644472b374f1da449a06623983d0477405b5229e386accadb154b43b8b083ee89f07c3f04d2c0c7501ead99ad95aecaa5873ff34c5eeb833285b598d5a655 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\base_library.zip
| MD5 | ccee0ea5ba04aa4fcb1d5a19e976b54f |
| SHA1 | f7a31b2223f1579da1418f8bfe679ad5cb8a58f5 |
| SHA256 | eeb7f0b3e56b03454868411d5f62f23c1832c27270cee551b9ca7d9d10106b29 |
| SHA512 | 4f29ac5df211fef941bd953c2d34cb0c769fb78475494746cb584790d9497c02be35322b0c8f5c14fe88d4dd722733eda12496db7a1200224a014043f7d59166 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_ctypes.pyd
| MD5 | 452305c8c5fda12f082834c3120db10a |
| SHA1 | 9bab7b3fd85b3c0f2bedc3c5adb68b2579daa6e7 |
| SHA256 | 543ce9d6dc3693362271a2c6e7d7fc07ad75327e0b0322301dd29886467b0b0e |
| SHA512 | 3d52afdbc8da74262475abc8f81415a0c368be70dbf5b2bd87c9c29ca3d14c44770a5b8b2e7c082f3ece0fd2ba1f98348a04b106a48d479fa6bd062712be8f7c |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\libffi-8.dll
| MD5 | 0f8e4992ca92baaf54cc0b43aaccce21 |
| SHA1 | c7300975df267b1d6adcbac0ac93fd7b1ab49bd2 |
| SHA256 | eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a |
| SHA512 | 6e1b223462dc124279bfca74fd2c66fe18b368ffbca540c84e82e0f5bcbea0e10cc243975574fa95ace437b9d8b03a446ed5ee0c9b1b094147cefaf704dfe978 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_bz2.pyd
| MD5 | 90f58f625a6655f80c35532a087a0319 |
| SHA1 | d4a7834201bd796dc786b0eb923f8ec5d60f719b |
| SHA256 | bd8621fcc901fa1de3961d93184f61ea71068c436794af2a4449738ccf949946 |
| SHA512 | b5bb1ecc195700ad7bea5b025503edd3770b1f845f9beee4b067235c4e63496d6e0b19bdd2a42a1b6591d1131a2dc9f627b2ae8036e294300bb6983ecd644dc8 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_lzma.pyd
| MD5 | cf8de1137f36141afd9ff7c52a3264ee |
| SHA1 | afde95a1d7a545d913387624ef48c60f23cf4a3f |
| SHA256 | 22d10e2d6ad3e3ed3c49eb79ab69a81aaa9d16aeca7f948da2fe80877f106c16 |
| SHA512 | 821985ff5bc421bd16b2fa5f77f1f4bf8472d0d1564bc5768e4dbe866ec52865a98356bb3ef23a380058acd0a25cd5a40a1e0dae479f15863e48c4482c89a03f |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_wmi.pyd
| MD5 | cb0564bc74258cb1320c606917ce5a71 |
| SHA1 | 5b2bfc0d997cc5b7d985bfadddbfc180cb01f7cf |
| SHA256 | 0342916a60a7b39bbd5753d85e1c12a4d6f990499753d467018b21cefa49cf32 |
| SHA512 | 43f3afa9801fcf5574a30f4d3e7ae6aff65c7716462f9aba5bc8055887a44bf38fba121639d8b31427e738752fe3b085d1d924de2633f4c042433e1960023f38 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_tkinter.pyd
| MD5 | eb6bbe091b6e2b0ff53ad736fdfcd456 |
| SHA1 | fbc73063986f0c1340b1c5c40c22b7dd47c7f1a3 |
| SHA256 | 198e2cee4502f69dfff2dd029308febce3d1e1d4dd9fe122e891bf95c7910d54 |
| SHA512 | a928c313f0617d7409a96099cbd01b5811f2618c181725cecd45bcf2b36e436578aeedadc0405f8727b966cc2cdf2fcd9788df572d7cb39ebb9e5f532533b4c5 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_ssl.pyd
| MD5 | 6774d6fb8b9e7025254148dc32c49f47 |
| SHA1 | 212e232da95ec8473eb0304cf89a5baf29020137 |
| SHA256 | 2b6f1b1ac47cb7878b62e8d6bb587052f86ca8145b05a261e855305b9ca3d36c |
| SHA512 | 5d9247dce96599160045962af86fc9e5439f66a7e8d15d1d00726ec1b3b49d9dd172d667380d644d05cb18e45a5419c2594b4bcf5a16ea01542ae4d7d9a05c6e |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_socket.pyd
| MD5 | 439b3ad279befa65bb40ecebddd6228b |
| SHA1 | d3ea91ae7cad9e1ebec11c5d0517132bbc14491e |
| SHA256 | 24017d664af20ee3b89514539345caac83eca34825fcf066a23e8a4c99f73e6d |
| SHA512 | a335e1963bb21b34b21aef6b0b14ba8908a5343b88f65294618e029e3d4d0143ea978a5fd76d2df13a918ffab1e2d7143f5a1a91a35e0cc1145809b15af273bd |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_queue.pyd
| MD5 | 5aa4b057ba2331eed6b4b30f4b3e0d52 |
| SHA1 | 6b9db113c2882743984c3d8b70ec49fc4a136c23 |
| SHA256 | d43dca0e00c3c11329b68177e967cf5240495c4786f5afa76ac4f267c3a5cdb9 |
| SHA512 | aa5aa3285ea5c177eca055949c5f550dbd2d2699202a29efe2077213cbc95fff2a36d99eecce249ac04d95baf149b3d8c557a67fc39ead3229f0b329e83447b7 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_hashlib.pyd
| MD5 | 8baeb2bd6e52ba38f445ef71ef43a6b8 |
| SHA1 | 4132f9cd06343ef8b5b60dc8a62be049aa3270c2 |
| SHA256 | 6c50c9801a5caf0bb52b384f9a0d5a4aa182ca835f293a39e8999cf6edf2f087 |
| SHA512 | 804a4e19ea622646cea9e0f8c1e284b7f2d02f3620199fa6930dbdadc654fa137c1e12757f87c3a1a71ceff9244aa2f598ee70d345469ca32a0400563fe3aa65 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\_decimal.pyd
| MD5 | f78f9855d2a7ca940b6be51d68b80bf2 |
| SHA1 | fd8af3dbd7b0ea3de2274517c74186cb7cd81a05 |
| SHA256 | d4ae192bbd4627fc9487a2c1cd9869d1b461c20cfd338194e87f5cf882bbed12 |
| SHA512 | 6b68c434a6f8c436d890d3c1229d332bd878e5777c421799f84d79679e998b95d2d4a013b09f50c5de4c6a85fcceb796f3c486e36a10cbac509a0da8d8102b18 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\zlib1.dll
| MD5 | b4a0b3d5abc631e95c074eee44e73f96 |
| SHA1 | c22c8baa23d731a0e08757d0449ca3dd662fd9e6 |
| SHA256 | c89c8a2fcf11d8191c7690027055431906aae827fc7f443f0908ad062e7e653e |
| SHA512 | 56bafd1c6c77343f724a8430a1f496b4a3160faa9a19ea40796438ae67d6c45f8a13224dcf3d1defb97140a2e47a248dd837801a8cb4674e7890b495aeec538e |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\unicodedata.pyd
| MD5 | fc47b9e23ddf2c128e3569a622868dbe |
| SHA1 | 2814643b70847b496cbda990f6442d8ff4f0cb09 |
| SHA256 | 2a50d629895a05b10a262acf333e7a4a31db5cb035b70d14d1a4be1c3e27d309 |
| SHA512 | 7c08683820498fdff5f1703db4ad94ad15f2aa877d044eddc4b54d90e7dc162f48b22828cd577c9bb1b56f7c11f777f9785a9da1867bf8c0f2b6e75dc57c3f53 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\tk86t.dll
| MD5 | ef0d7469a88afb64944e2b2d91eb3e7f |
| SHA1 | a26fd3de8da3e4aec417cebfa2de78f9ba7cf05b |
| SHA256 | 23a195e1e3922215148e1e09a249b4fe017a73b3564af90b0f6fd4d9e5dda4da |
| SHA512 | 909f0b73b64bad84b896a973b58735747d87b5133207cb3d9fa9ce0c026ee59255b7660c43bb86b1ddeef9fbb80b2250719fd379cff7afd9dbec6f6a007ed093 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\tcl86t.dll
| MD5 | b0261de5ef4879a442abdcd03dedfa3c |
| SHA1 | 7f13684ff91fcd60b4712f6cf9e46eb08e57c145 |
| SHA256 | 28b61545d3a53460f41c20dacf0e0df2ba687a5c85f9ed5c34dbfc7ed2f23e3e |
| SHA512 | e39a242e321e92761256b2b4bdde7f9d880b5c64d4778b87fa98bf4ac93a0248e408a332ae214b7ffd76fb9d219555dc10ab8327806d8d63309bf6d147ebbd59 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\select.pyd
| MD5 | e1604afe8244e1ce4c316c64ea3aa173 |
| SHA1 | 99704d2c0fa2687997381b65ff3b1b7194220a73 |
| SHA256 | 74cca85600e7c17ea6532b54842e26d3cae9181287cdf5a4a3c50af4dab785e5 |
| SHA512 | 7bf35b1a9da9f1660f238c2959b3693b7d9d2da40cf42c6f9eba2164b73047340d0adff8995049a2fe14e149eba05a5974eee153badd9e8450f961207f0b3d42 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\pyexpat.pyd
| MD5 | e2d1c738d6d24a6dd86247d105318576 |
| SHA1 | 384198f20724e4ede9e7b68e2d50883c664eee49 |
| SHA256 | cdc09fbae2f103196215facd50d108be3eff60c8ee5795dcc80bf57a0f120cdf |
| SHA512 | 3f9cb64b4456438dea82a0638e977f233faf0a08433f01ca87ba65c7e80b0680b0ec3009fa146f02ae1fdcc56271a66d99855d222e77b59a1713caf952a807da |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\libssl-3.dll
| MD5 | bfc834bb2310ddf01be9ad9cff7c2a41 |
| SHA1 | fb1d601b4fcb29ff1b13b0d2ed7119bd0472205c |
| SHA256 | 41ad1a04ca27a7959579e87fbbda87c93099616a64a0e66260c983381c5570d1 |
| SHA512 | 6af473c7c0997f2847ebe7cee8ef67cd682dee41720d4f268964330b449ba71398fda8954524f9a97cc4cdf9893b8bdc7a1cf40e9e45a73f4f35a37f31c6a9c3 |
C:\Users\Admin\AppData\Local\Temp\_MEI42722\libcrypto-3.dll
| MD5 | 51e8a5281c2092e45d8c97fbdbf39560 |
| SHA1 | c499c810ed83aaadce3b267807e593ec6b121211 |
| SHA256 | 2a234b5aa20c3faecf725bbb54fb33f3d94543f78fa7045408e905593e49960a |
| SHA512 | 98b91719b0975cb38d3b3c7b6f820d184ef1b64d38ad8515be0b8b07730e2272376b9e51631fe9efd9b8a1709fea214cf3f77b34eeb9fd282eb09e395120e7cb |
C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat
| MD5 | 18951ad4190ed728ba23e932e0c6e0db |
| SHA1 | fa2d16fcbc3defd07cb8f21d8ea4793a21f261f0 |
| SHA256 | 66607b009c345a8e70fc1e58ab8a13bbea0e370c8d75f16d2cce5b876a748915 |
| SHA512 | a67237089efa8615747bdc6cfe0afc977dc54cfd624a8d2e5124a441c204f1ec58ee7cfbbc105ddc2c18d4f254b9e124d71630bcdba0253d41a96890104f2fff |