Analysis

  • max time kernel
    33s
  • max time network
    19s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21/05/2024, 20:39

General

  • Target

    PolarCrasher.exe

  • Size

    11.6MB

  • MD5

    40dbe831926689e4d37f221b3e9ed135

  • SHA1

    50534117514922765b74ee80c59af1581d2c5d2b

  • SHA256

    0993ad20decfd8a1334035bf9062a70a808787b330908dc035feb04177b836d5

  • SHA512

    c8e9867394f79e83dab70b9d50cf1de5235e14c48105c2e9b59a70b4bd202e72b8a14c7ac1d82f03677bd7358ddff5e7148c1db75bdbf81a1acb01f00e1b634d

  • SSDEEP

    196608:PsGsRrjk0p1W903eV4QRIMToEuGxgh858F0ibfU9au5p0W8/LQhoANNngABSbknL:JG00vW+eGQRIMTozGxu8C0ibfEau5qWb

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 30 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
    "C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
      "C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
      2⤵
      • Loads dropped DLL
      PID:5116
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:5976
    • C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
      "C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:6064
      • C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
        "C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
        2⤵
        • Loads dropped DLL
        PID:3604
    • C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
      "C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:7044
      • C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe
        "C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe"
        2⤵
        • Loads dropped DLL
        PID:7012

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\VCRUNTIME140.dll

      Filesize

      116KB

      MD5

      be8dbe2dc77ebe7f88f910c61aec691a

      SHA1

      a19f08bb2b1c1de5bb61daf9f2304531321e0e40

      SHA256

      4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83

      SHA512

      0da644472b374f1da449a06623983d0477405b5229e386accadb154b43b8b083ee89f07c3f04d2c0c7501ead99ad95aecaa5873ff34c5eeb833285b598d5a655

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_bz2.pyd

      Filesize

      82KB

      MD5

      90f58f625a6655f80c35532a087a0319

      SHA1

      d4a7834201bd796dc786b0eb923f8ec5d60f719b

      SHA256

      bd8621fcc901fa1de3961d93184f61ea71068c436794af2a4449738ccf949946

      SHA512

      b5bb1ecc195700ad7bea5b025503edd3770b1f845f9beee4b067235c4e63496d6e0b19bdd2a42a1b6591d1131a2dc9f627b2ae8036e294300bb6983ecd644dc8

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_ctypes.pyd

      Filesize

      122KB

      MD5

      452305c8c5fda12f082834c3120db10a

      SHA1

      9bab7b3fd85b3c0f2bedc3c5adb68b2579daa6e7

      SHA256

      543ce9d6dc3693362271a2c6e7d7fc07ad75327e0b0322301dd29886467b0b0e

      SHA512

      3d52afdbc8da74262475abc8f81415a0c368be70dbf5b2bd87c9c29ca3d14c44770a5b8b2e7c082f3ece0fd2ba1f98348a04b106a48d479fa6bd062712be8f7c

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_decimal.pyd

      Filesize

      247KB

      MD5

      f78f9855d2a7ca940b6be51d68b80bf2

      SHA1

      fd8af3dbd7b0ea3de2274517c74186cb7cd81a05

      SHA256

      d4ae192bbd4627fc9487a2c1cd9869d1b461c20cfd338194e87f5cf882bbed12

      SHA512

      6b68c434a6f8c436d890d3c1229d332bd878e5777c421799f84d79679e998b95d2d4a013b09f50c5de4c6a85fcceb796f3c486e36a10cbac509a0da8d8102b18

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_hashlib.pyd

      Filesize

      64KB

      MD5

      8baeb2bd6e52ba38f445ef71ef43a6b8

      SHA1

      4132f9cd06343ef8b5b60dc8a62be049aa3270c2

      SHA256

      6c50c9801a5caf0bb52b384f9a0d5a4aa182ca835f293a39e8999cf6edf2f087

      SHA512

      804a4e19ea622646cea9e0f8c1e284b7f2d02f3620199fa6930dbdadc654fa137c1e12757f87c3a1a71ceff9244aa2f598ee70d345469ca32a0400563fe3aa65

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_lzma.pyd

      Filesize

      155KB

      MD5

      cf8de1137f36141afd9ff7c52a3264ee

      SHA1

      afde95a1d7a545d913387624ef48c60f23cf4a3f

      SHA256

      22d10e2d6ad3e3ed3c49eb79ab69a81aaa9d16aeca7f948da2fe80877f106c16

      SHA512

      821985ff5bc421bd16b2fa5f77f1f4bf8472d0d1564bc5768e4dbe866ec52865a98356bb3ef23a380058acd0a25cd5a40a1e0dae479f15863e48c4482c89a03f

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_queue.pyd

      Filesize

      31KB

      MD5

      5aa4b057ba2331eed6b4b30f4b3e0d52

      SHA1

      6b9db113c2882743984c3d8b70ec49fc4a136c23

      SHA256

      d43dca0e00c3c11329b68177e967cf5240495c4786f5afa76ac4f267c3a5cdb9

      SHA512

      aa5aa3285ea5c177eca055949c5f550dbd2d2699202a29efe2077213cbc95fff2a36d99eecce249ac04d95baf149b3d8c557a67fc39ead3229f0b329e83447b7

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_socket.pyd

      Filesize

      81KB

      MD5

      439b3ad279befa65bb40ecebddd6228b

      SHA1

      d3ea91ae7cad9e1ebec11c5d0517132bbc14491e

      SHA256

      24017d664af20ee3b89514539345caac83eca34825fcf066a23e8a4c99f73e6d

      SHA512

      a335e1963bb21b34b21aef6b0b14ba8908a5343b88f65294618e029e3d4d0143ea978a5fd76d2df13a918ffab1e2d7143f5a1a91a35e0cc1145809b15af273bd

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_ssl.pyd

      Filesize

      173KB

      MD5

      6774d6fb8b9e7025254148dc32c49f47

      SHA1

      212e232da95ec8473eb0304cf89a5baf29020137

      SHA256

      2b6f1b1ac47cb7878b62e8d6bb587052f86ca8145b05a261e855305b9ca3d36c

      SHA512

      5d9247dce96599160045962af86fc9e5439f66a7e8d15d1d00726ec1b3b49d9dd172d667380d644d05cb18e45a5419c2594b4bcf5a16ea01542ae4d7d9a05c6e

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_tkinter.pyd

      Filesize

      62KB

      MD5

      eb6bbe091b6e2b0ff53ad736fdfcd456

      SHA1

      fbc73063986f0c1340b1c5c40c22b7dd47c7f1a3

      SHA256

      198e2cee4502f69dfff2dd029308febce3d1e1d4dd9fe122e891bf95c7910d54

      SHA512

      a928c313f0617d7409a96099cbd01b5811f2618c181725cecd45bcf2b36e436578aeedadc0405f8727b966cc2cdf2fcd9788df572d7cb39ebb9e5f532533b4c5

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\_wmi.pyd

      Filesize

      35KB

      MD5

      cb0564bc74258cb1320c606917ce5a71

      SHA1

      5b2bfc0d997cc5b7d985bfadddbfc180cb01f7cf

      SHA256

      0342916a60a7b39bbd5753d85e1c12a4d6f990499753d467018b21cefa49cf32

      SHA512

      43f3afa9801fcf5574a30f4d3e7ae6aff65c7716462f9aba5bc8055887a44bf38fba121639d8b31427e738752fe3b085d1d924de2633f4c042433e1960023f38

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\base_library.zip

      Filesize

      1.3MB

      MD5

      f529dc05c2fb2e9325bcc626de5aa2ff

      SHA1

      98e1ee756c496f31b5a63a8f9c968a3821b92b99

      SHA256

      6af8511d62e7e7ed1805a07edd05a7fa83a728f0d24f92e7ed498ae01a0b92f2

      SHA512

      fd07ff25639e4c3eb8b2af2fd3c70d58c79a2fd967995721395e74ffc53c7783cc19fe6047feab656b964024f6c895f9071ee6d4ae1f42d0c89ab62835a1b73d

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\libcrypto-3.dll

      Filesize

      4.9MB

      MD5

      51e8a5281c2092e45d8c97fbdbf39560

      SHA1

      c499c810ed83aaadce3b267807e593ec6b121211

      SHA256

      2a234b5aa20c3faecf725bbb54fb33f3d94543f78fa7045408e905593e49960a

      SHA512

      98b91719b0975cb38d3b3c7b6f820d184ef1b64d38ad8515be0b8b07730e2272376b9e51631fe9efd9b8a1709fea214cf3f77b34eeb9fd282eb09e395120e7cb

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\libffi-8.dll

      Filesize

      38KB

      MD5

      0f8e4992ca92baaf54cc0b43aaccce21

      SHA1

      c7300975df267b1d6adcbac0ac93fd7b1ab49bd2

      SHA256

      eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a

      SHA512

      6e1b223462dc124279bfca74fd2c66fe18b368ffbca540c84e82e0f5bcbea0e10cc243975574fa95ace437b9d8b03a446ed5ee0c9b1b094147cefaf704dfe978

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\libssl-3.dll

      Filesize

      771KB

      MD5

      bfc834bb2310ddf01be9ad9cff7c2a41

      SHA1

      fb1d601b4fcb29ff1b13b0d2ed7119bd0472205c

      SHA256

      41ad1a04ca27a7959579e87fbbda87c93099616a64a0e66260c983381c5570d1

      SHA512

      6af473c7c0997f2847ebe7cee8ef67cd682dee41720d4f268964330b449ba71398fda8954524f9a97cc4cdf9893b8bdc7a1cf40e9e45a73f4f35a37f31c6a9c3

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\pyexpat.pyd

      Filesize

      194KB

      MD5

      e2d1c738d6d24a6dd86247d105318576

      SHA1

      384198f20724e4ede9e7b68e2d50883c664eee49

      SHA256

      cdc09fbae2f103196215facd50d108be3eff60c8ee5795dcc80bf57a0f120cdf

      SHA512

      3f9cb64b4456438dea82a0638e977f233faf0a08433f01ca87ba65c7e80b0680b0ec3009fa146f02ae1fdcc56271a66d99855d222e77b59a1713caf952a807da

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\python312.dll

      Filesize

      6.7MB

      MD5

      48ebfefa21b480a9b0dbfc3364e1d066

      SHA1

      b44a3a9b8c585b30897ddc2e4249dfcfd07b700a

      SHA256

      0cc4e557972488eb99ea4aeb3d29f3ade974ef3bcd47c211911489a189a0b6f2

      SHA512

      4e6194f1c55b82ee41743b35d749f5d92a955b219decacf9f1396d983e0f92ae02089c7f84a2b8296a3062afa3f9c220da9b7cd9ed01b3315ea4a953b4ecc6ce

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\select.pyd

      Filesize

      29KB

      MD5

      e1604afe8244e1ce4c316c64ea3aa173

      SHA1

      99704d2c0fa2687997381b65ff3b1b7194220a73

      SHA256

      74cca85600e7c17ea6532b54842e26d3cae9181287cdf5a4a3c50af4dab785e5

      SHA512

      7bf35b1a9da9f1660f238c2959b3693b7d9d2da40cf42c6f9eba2164b73047340d0adff8995049a2fe14e149eba05a5974eee153badd9e8450f961207f0b3d42

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\tcl86t.dll

      Filesize

      1.7MB

      MD5

      b0261de5ef4879a442abdcd03dedfa3c

      SHA1

      7f13684ff91fcd60b4712f6cf9e46eb08e57c145

      SHA256

      28b61545d3a53460f41c20dacf0e0df2ba687a5c85f9ed5c34dbfc7ed2f23e3e

      SHA512

      e39a242e321e92761256b2b4bdde7f9d880b5c64d4778b87fa98bf4ac93a0248e408a332ae214b7ffd76fb9d219555dc10ab8327806d8d63309bf6d147ebbd59

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\tk86t.dll

      Filesize

      1.5MB

      MD5

      ef0d7469a88afb64944e2b2d91eb3e7f

      SHA1

      a26fd3de8da3e4aec417cebfa2de78f9ba7cf05b

      SHA256

      23a195e1e3922215148e1e09a249b4fe017a73b3564af90b0f6fd4d9e5dda4da

      SHA512

      909f0b73b64bad84b896a973b58735747d87b5133207cb3d9fa9ce0c026ee59255b7660c43bb86b1ddeef9fbb80b2250719fd379cff7afd9dbec6f6a007ed093

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\unicodedata.pyd

      Filesize

      1.1MB

      MD5

      fc47b9e23ddf2c128e3569a622868dbe

      SHA1

      2814643b70847b496cbda990f6442d8ff4f0cb09

      SHA256

      2a50d629895a05b10a262acf333e7a4a31db5cb035b70d14d1a4be1c3e27d309

      SHA512

      7c08683820498fdff5f1703db4ad94ad15f2aa877d044eddc4b54d90e7dc162f48b22828cd577c9bb1b56f7c11f777f9785a9da1867bf8c0f2b6e75dc57c3f53

    • C:\Users\Admin\AppData\Local\Temp\_MEI49522\zlib1.dll

      Filesize

      141KB

      MD5

      b4a0b3d5abc631e95c074eee44e73f96

      SHA1

      c22c8baa23d731a0e08757d0449ca3dd662fd9e6

      SHA256

      c89c8a2fcf11d8191c7690027055431906aae827fc7f443f0908ad062e7e653e

      SHA512

      56bafd1c6c77343f724a8430a1f496b4a3160faa9a19ea40796438ae67d6c45f8a13224dcf3d1defb97140a2e47a248dd837801a8cb4674e7890b495aeec538e

    • C:\Users\Admin\AppData\Local\Temp\_MEI70442\tcl\encoding\euc-cn.enc

      Filesize

      84KB

      MD5

      c5aa0d11439e0f7682dae39445f5dab4

      SHA1

      73a6d55b894e89a7d4cb1cd3ccff82665c303d5c

      SHA256

      1700af47dc012a48cec89cf1dfae6d1d0d2f40ed731eff6ca55296a055a11c00

      SHA512

      eee6058bd214c59bcc11e6de7265da2721c119cc9261cfd755a98e270ff74d2d73e3e711aa01a0e3414c46d82e291ef0df2ad6c65ca477c888426d5a1d2a3bc5