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Analysis

  • max time kernel
    21s
  • max time network
    18s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    05/06/2024, 03:23

General

  • Target

    SolaraBootstrapper.exe

  • Size

    13KB

  • MD5

    6557bd5240397f026e675afb78544a26

  • SHA1

    839e683bf68703d373b6eac246f19386bb181713

  • SHA256

    a7fecfc225dfdd4e14dcd4d1b4ba1b9f8e4d1984f1cdd8cda3a9987e5d53c239

  • SHA512

    f2399d34898a4c0c201372d2dd084ee66a66a1c3eae949e568421fe7edada697468ef81f4fcab2afd61eaf97bcb98d6ade2d97295e2f674e93116d142e892e97

  • SSDEEP

    192:konexQO0FoAWyEfJkVIaqaLHmr/XKT0ifnTJ1jvVXctNjA:HnexHAWyEfJoIaqayzKAifd1LVEj

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Themida packer 6 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2448
    • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe
      "C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:5004

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Core.dll

    Filesize

    488KB

    MD5

    851fee9a41856b588847cf8272645f58

    SHA1

    ee185a1ff257c86eb19d30a191bf0695d5ac72a1

    SHA256

    5e7faee6b8230ca3b97ce9542b914db3abbbd1cb14fd95a39497aaad4c1094ca

    SHA512

    cf5c70984cf33e12cf57116da1f282a5bd6433c570831c185253d13463b0b9a0b9387d4d1bf4dddab3292a5d9ba96d66b6812e9d7ebc5eb35cb96eea2741348f

  • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Wpf.dll

    Filesize

    43KB

    MD5

    34ec990ed346ec6a4f14841b12280c20

    SHA1

    6587164274a1ae7f47bdb9d71d066b83241576f0

    SHA256

    1e987b22cd011e4396a0805c73539586b67df172df75e3dded16a77d31850409

    SHA512

    b565015ca4b11b79ecbc8127f1fd40c986948050f1caefdd371d34ed2136af0aabf100863dc6fd16d67e3751d44ee13835ea9bf981ac0238165749c4987d1ae0

  • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\get-intrinsic\.nycrc

    Filesize

    139B

    MD5

    d0104f79f0b4f03bbcd3b287fa04cf8c

    SHA1

    54f9d7adf8943cb07f821435bb269eb4ba40ccc2

    SHA256

    997785c50b0773e5e18bf15550fbf57823c634fefe623cd37b3c83696402ad0a

    SHA512

    daf9b5445cfc02397f398adfa0258f2489b70699dfec6ca7e5b85afe5671fdcabe59edee332f718f5e5778feb1e301778dffe93bb28c1c0914f669659bad39c6

  • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\has-proto\.eslintrc

    Filesize

    43B

    MD5

    c28b0fe9be6e306cc2ad30fe00e3db10

    SHA1

    af79c81bd61c9a937fca18425dd84cdf8317c8b9

    SHA256

    0694050195fc694c5846b0a2a66b437ac775da988f0a779c55fb892597f7f641

    SHA512

    e3eca17804522ffa4f41e836e76e397a310a20e8261a38115b67e8b644444153039d04198fb470f45be2997d2c7a72b15bd4771a02c741b3cbc072ea6ef432e9

  • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\hasown\.nycrc

    Filesize

    216B

    MD5

    c2ab942102236f987048d0d84d73d960

    SHA1

    95462172699187ac02eaec6074024b26e6d71cff

    SHA256

    948366fea3b423a46366326d0bb2e54b08abd1cf0b243678ba6625740c40da5a

    SHA512

    e36b20c16ceeb090750f3865efc8d7fd983ae4e8b41c30cc3865d2fd4925bf5902627e1f1ed46c0ff2453f076ef9de34be899ef57754b29cd158440071318479

  • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\vary\LICENSE

    Filesize

    1KB

    MD5

    13babc4f212ce635d68da544339c962b

    SHA1

    4881ad2ec8eb2470a7049421047c6d076f48f1de

    SHA256

    bd47ce7b88c7759630d1e2b9fcfa170a0f1fde522be09e13fb1581a79d090400

    SHA512

    40e30174433408e0e2ed46d24373b12def47f545d9183b7bce28d4ddd8c8bb528075c7f20e118f37661db9f1bba358999d81a14425eb3e0a4a20865dfcb53182

  • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Wpf.Ui.dll

    Filesize

    5.2MB

    MD5

    aead90ab96e2853f59be27c4ec1e4853

    SHA1

    43cdedde26488d3209e17efff9a51e1f944eb35f

    SHA256

    46cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed

    SHA512

    f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d

  • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\bin\path.txt

    Filesize

    34B

    MD5

    0e2184f1c7464b6617329fb18f107b4f

    SHA1

    6f22f98471e33c9db10d6f6f1728e98852e25b8f

    SHA256

    dbf5f44e1b84a298dbbcad3c31a617d2f6cfa08eb5d16e05a5c28726c574d4eb

    SHA512

    8e745c0215d52e15702551f29efb882a5eba97b5f279ccc29293b1a9b1b8661bf71b548569f9a99fa35c35a15d1b6b288d3c381c1292418c36dc89e2fa0b3a37

  • C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe

    Filesize

    85KB

    MD5

    f8f4522d11178a26e97e2046f249dfa7

    SHA1

    8b591d9a37716e235260fb6b3f601e4ccbebf15d

    SHA256

    3c372a8919c28dc76414b2f30da423c3e1018b1a8444527949ce20cc3fc93ed0

    SHA512

    52ea881cad501cf1d5e8ac47355e862ac1bd39cb6e1ff3d362d392b6f2d676e74878832505d17a552aaa3bc8f3977da11fa3f9903722eedd23716fb46ddb7492

  • \Users\Admin\AppData\Local\Temp\Solara.Dir\WebView2Loader.dll

    Filesize

    133KB

    MD5

    a0bd0d1a66e7c7f1d97aedecdafb933f

    SHA1

    dd109ac34beb8289030e4ec0a026297b793f64a3

    SHA256

    79d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36

    SHA512

    2a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50

  • \Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.dll

    Filesize

    5.7MB

    MD5

    24aa3e78e168caf7e55d15ce92ba4602

    SHA1

    8b8131bb552d45c7ac79624d95bc97e6d97ed5ea

    SHA256

    f1d385290c5d8c2bf35b270d0681a3fabf6b428563afaf7ce8cc45cfbd19a8b1

    SHA512

    74d9c6833f7bc5f26bbd941588a5d5d676f8db9ff097f24a4082d58be068f7c2c35c799687083a00e685346b881034eb8d98b24b68ec5019ec9967b0b2e2febf

  • \Users\Admin\AppData\Local\Temp\Solara.Dir\libcurl.dll

    Filesize

    522KB

    MD5

    e31f5136d91bad0fcbce053aac798a30

    SHA1

    ee785d2546aec4803bcae08cdebfd5d168c42337

    SHA256

    ee94e2201870536522047e6d7fe7b903a63cd2e13e20c8fffc86d0e95361e671

    SHA512

    a1543eb1d10d25efb44f9eaa0673c82bfac5173055d04c0f3be4792984635a7c774df57a8e289f840627754a4e595b855d299070d469e0f1e637c3f35274abe6

  • \Users\Admin\AppData\Local\Temp\Solara.Dir\vcruntime140.dll

    Filesize

    99KB

    MD5

    7a2b8cfcd543f6e4ebca43162b67d610

    SHA1

    c1c45a326249bf0ccd2be2fbd412f1a62fb67024

    SHA256

    7d7ca28235fba5603a7f40514a552ac7efaa67a5d5792bb06273916aa8565c5f

    SHA512

    e38304fb9c5af855c1134f542adf72cde159fab64385533eafa5bb6e374f19b5a29c0cb5516fc5da5c0b5ac47c2f6420792e0ac8ddff11e749832a7b7f3eb5c8

  • \Users\Admin\AppData\Local\Temp\Solara.Dir\zlib1.dll

    Filesize

    113KB

    MD5

    75365924730b0b2c1a6ee9028ef07685

    SHA1

    a10687c37deb2ce5422140b541a64ac15534250f

    SHA256

    945e7f5d09938b7769a4e68f4ef01406e5af9f40db952cba05ddb3431dd1911b

    SHA512

    c1e31c18903e657203ae847c9af601b1eb38efa95cb5fa7c1b75f84a2cba9023d08f1315c9bb2d59b53256dfdb3bac89930252138475491b21749471adc129a1

  • memory/2448-1-0x00000000007B0000-0x00000000007BA000-memory.dmp

    Filesize

    40KB

  • memory/2448-0-0x00007FFE4A840000-0x00007FFE4AA1B000-memory.dmp

    Filesize

    1.9MB

  • memory/2448-4-0x0000000005A40000-0x0000000005A52000-memory.dmp

    Filesize

    72KB

  • memory/2448-2-0x0000000005020000-0x000000000502A000-memory.dmp

    Filesize

    40KB

  • memory/5004-1471-0x0000016C2A1E0000-0x0000016C2A1EE000-memory.dmp

    Filesize

    56KB

  • memory/5004-1463-0x00007FFE4A840000-0x00007FFE4AA1B000-memory.dmp

    Filesize

    1.9MB

  • memory/5004-1474-0x00007FFE4A840000-0x00007FFE4AA1B000-memory.dmp

    Filesize

    1.9MB

  • memory/5004-1462-0x0000016C29DA0000-0x0000016C29DBA000-memory.dmp

    Filesize

    104KB

  • memory/5004-1467-0x0000016C445F0000-0x0000016C446A8000-memory.dmp

    Filesize

    736KB

  • memory/5004-1483-0x0000000180000000-0x0000000180DE1000-memory.dmp

    Filesize

    13.9MB

  • memory/5004-1466-0x0000016C44A70000-0x0000016C44FAC000-memory.dmp

    Filesize

    5.2MB

  • memory/5004-1464-0x00007FFE4A840000-0x00007FFE4AA1B000-memory.dmp

    Filesize

    1.9MB

  • memory/5004-1484-0x0000000180000000-0x0000000180DE1000-memory.dmp

    Filesize

    13.9MB

  • memory/5004-1469-0x0000016C44530000-0x0000016C445AE000-memory.dmp

    Filesize

    504KB

  • memory/5004-1488-0x0000016C44500000-0x0000016C44508000-memory.dmp

    Filesize

    32KB

  • memory/5004-1486-0x0000000180000000-0x0000000180DE1000-memory.dmp

    Filesize

    13.9MB

  • memory/5004-1489-0x0000016C493F0000-0x0000016C49428000-memory.dmp

    Filesize

    224KB

  • memory/5004-1485-0x0000000180000000-0x0000000180DE1000-memory.dmp

    Filesize

    13.9MB

  • memory/5004-1490-0x0000016C495D0000-0x0000016C495DE000-memory.dmp

    Filesize

    56KB

  • memory/5004-1492-0x00007FFE414B0000-0x00007FFE414D4000-memory.dmp

    Filesize

    144KB

  • memory/5004-1491-0x0000000180000000-0x0000000180DE1000-memory.dmp

    Filesize

    13.9MB

  • memory/5004-1493-0x00007FFE4A840000-0x00007FFE4AA1B000-memory.dmp

    Filesize

    1.9MB