Analysis Overview
SHA256
a7fecfc225dfdd4e14dcd4d1b4ba1b9f8e4d1984f1cdd8cda3a9987e5d53c239
Threat Level: Likely malicious
The file SolaraBootstrapper.exe was found to be: Likely malicious.
Malicious Activity Summary
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Themida packer
Checks BIOS information in registry
Executes dropped EXE
Loads dropped DLL
Legitimate hosting services abused for malware hosting/C2
Checks whether UAC is enabled
Suspicious use of NtSetInformationThreadHideFromDebugger
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-09 04:50
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-09 04:50
Reported
2024-06-09 05:24
Platform
win10-20240404-en
Max time kernel
615s
Max time network
1821s
Command Line
Signatures
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe | N/A |
Loads dropped DLL
Themida packer
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Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | raw.githubusercontent.com | N/A | N/A |
| N/A | raw.githubusercontent.com | N/A | N/A |
| N/A | raw.githubusercontent.com | N/A | N/A |
| N/A | raw.githubusercontent.com | N/A | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 512 wrote to memory of 2548 | N/A | C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe | C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe |
| PID 512 wrote to memory of 2548 | N/A | C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe | C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe"
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | github.com | udp |
| GB | 20.26.156.215:443 | github.com | tcp |
| US | 8.8.8.8:53 | raw.githubusercontent.com | udp |
| US | 185.199.108.133:443 | raw.githubusercontent.com | tcp |
| US | 8.8.8.8:53 | 215.156.26.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp | |
| US | 185.199.108.133:443 | raw.githubusercontent.com | tcp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| N/A | 127.0.0.1:51252 | tcp | |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.16.208.104.in-addr.arpa | udp |
| US | 185.199.108.133:443 | raw.githubusercontent.com | tcp |
| N/A | 127.0.0.1:51330 | tcp | |
| US | 8.8.8.8:53 | 225.14.97.104.in-addr.arpa | udp |
Files
memory/512-0-0x0000000073FAE000-0x0000000073FAF000-memory.dmp
memory/512-1-0x00000000006E0000-0x00000000006EA000-memory.dmp
memory/512-2-0x00000000010F0000-0x00000000010FA000-memory.dmp
memory/512-3-0x0000000073FA0000-0x000000007468E000-memory.dmp
memory/512-5-0x0000000005990000-0x00000000059A2000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\get-intrinsic\.nycrc
| MD5 | d0104f79f0b4f03bbcd3b287fa04cf8c |
| SHA1 | 54f9d7adf8943cb07f821435bb269eb4ba40ccc2 |
| SHA256 | 997785c50b0773e5e18bf15550fbf57823c634fefe623cd37b3c83696402ad0a |
| SHA512 | daf9b5445cfc02397f398adfa0258f2489b70699dfec6ca7e5b85afe5671fdcabe59edee332f718f5e5778feb1e301778dffe93bb28c1c0914f669659bad39c6 |
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\hasown\.nycrc
| MD5 | c2ab942102236f987048d0d84d73d960 |
| SHA1 | 95462172699187ac02eaec6074024b26e6d71cff |
| SHA256 | 948366fea3b423a46366326d0bb2e54b08abd1cf0b243678ba6625740c40da5a |
| SHA512 | e36b20c16ceeb090750f3865efc8d7fd983ae4e8b41c30cc3865d2fd4925bf5902627e1f1ed46c0ff2453f076ef9de34be899ef57754b29cd158440071318479 |
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\has-proto\.eslintrc
| MD5 | c28b0fe9be6e306cc2ad30fe00e3db10 |
| SHA1 | af79c81bd61c9a937fca18425dd84cdf8317c8b9 |
| SHA256 | 0694050195fc694c5846b0a2a66b437ac775da988f0a779c55fb892597f7f641 |
| SHA512 | e3eca17804522ffa4f41e836e76e397a310a20e8261a38115b67e8b644444153039d04198fb470f45be2997d2c7a72b15bd4771a02c741b3cbc072ea6ef432e9 |
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\vary\LICENSE
| MD5 | 13babc4f212ce635d68da544339c962b |
| SHA1 | 4881ad2ec8eb2470a7049421047c6d076f48f1de |
| SHA256 | bd47ce7b88c7759630d1e2b9fcfa170a0f1fde522be09e13fb1581a79d090400 |
| SHA512 | 40e30174433408e0e2ed46d24373b12def47f545d9183b7bce28d4ddd8c8bb528075c7f20e118f37661db9f1bba358999d81a14425eb3e0a4a20865dfcb53182 |
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe
| MD5 | f8f4522d11178a26e97e2046f249dfa7 |
| SHA1 | 8b591d9a37716e235260fb6b3f601e4ccbebf15d |
| SHA256 | 3c372a8919c28dc76414b2f30da423c3e1018b1a8444527949ce20cc3fc93ed0 |
| SHA512 | 52ea881cad501cf1d5e8ac47355e862ac1bd39cb6e1ff3d362d392b6f2d676e74878832505d17a552aaa3bc8f3977da11fa3f9903722eedd23716fb46ddb7492 |
memory/512-1465-0x0000000073FA0000-0x000000007468E000-memory.dmp
memory/2548-1467-0x0000025261220000-0x000002526123A000-memory.dmp
memory/2548-1466-0x00007FFE943D3000-0x00007FFE943D4000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Wpf.Ui.dll
| MD5 | aead90ab96e2853f59be27c4ec1e4853 |
| SHA1 | 43cdedde26488d3209e17efff9a51e1f944eb35f |
| SHA256 | 46cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed |
| SHA512 | f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d |
memory/2548-1469-0x00007FFE943D0000-0x00007FFE94DBC000-memory.dmp
memory/2548-1470-0x000002527BDF0000-0x000002527C32C000-memory.dmp
memory/2548-1471-0x000002527B970000-0x000002527BA28000-memory.dmp
memory/2548-1475-0x0000025261600000-0x000002526160E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Wpf.dll
| MD5 | 34ec990ed346ec6a4f14841b12280c20 |
| SHA1 | 6587164274a1ae7f47bdb9d71d066b83241576f0 |
| SHA256 | 1e987b22cd011e4396a0805c73539586b67df172df75e3dded16a77d31850409 |
| SHA512 | b565015ca4b11b79ecbc8127f1fd40c986948050f1caefdd371d34ed2136af0aabf100863dc6fd16d67e3751d44ee13835ea9bf981ac0238165749c4987d1ae0 |
memory/2548-1473-0x000002527BA30000-0x000002527BAAE000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Core.dll
| MD5 | 851fee9a41856b588847cf8272645f58 |
| SHA1 | ee185a1ff257c86eb19d30a191bf0695d5ac72a1 |
| SHA256 | 5e7faee6b8230ca3b97ce9542b914db3abbbd1cb14fd95a39497aaad4c1094ca |
| SHA512 | cf5c70984cf33e12cf57116da1f282a5bd6433c570831c185253d13463b0b9a0b9387d4d1bf4dddab3292a5d9ba96d66b6812e9d7ebc5eb35cb96eea2741348f |
\Users\Admin\AppData\Local\Temp\Solara.Dir\WebView2Loader.dll
| MD5 | a0bd0d1a66e7c7f1d97aedecdafb933f |
| SHA1 | dd109ac34beb8289030e4ec0a026297b793f64a3 |
| SHA256 | 79d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36 |
| SHA512 | 2a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50 |
memory/2548-1478-0x00007FFE943D0000-0x00007FFE94DBC000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.dll
| MD5 | 987175c463ec9a5e76bab033cea9d859 |
| SHA1 | ceed36975f4583a34c26150e045a97f5f019e769 |
| SHA256 | 24fca8dd76effd975d230f55eb107e1be6c03d658410274fe6340a2b3ec9075c |
| SHA512 | 9851d254fef3fdfcd7b188893a9a547ed3f08eee82a72c273f13beb7d075beecd32e3c5c51f9e3135d7060fca71a2bf79dbdbb1a136549a9e408a6214feaa000 |
\Users\Admin\AppData\Local\Temp\Solara.Dir\zlib1.dll
| MD5 | 75365924730b0b2c1a6ee9028ef07685 |
| SHA1 | a10687c37deb2ce5422140b541a64ac15534250f |
| SHA256 | 945e7f5d09938b7769a4e68f4ef01406e5af9f40db952cba05ddb3431dd1911b |
| SHA512 | c1e31c18903e657203ae847c9af601b1eb38efa95cb5fa7c1b75f84a2cba9023d08f1315c9bb2d59b53256dfdb3bac89930252138475491b21749471adc129a1 |
\Users\Admin\AppData\Local\Temp\Solara.Dir\vcruntime140.dll
| MD5 | 7a2b8cfcd543f6e4ebca43162b67d610 |
| SHA1 | c1c45a326249bf0ccd2be2fbd412f1a62fb67024 |
| SHA256 | 7d7ca28235fba5603a7f40514a552ac7efaa67a5d5792bb06273916aa8565c5f |
| SHA512 | e38304fb9c5af855c1134f542adf72cde159fab64385533eafa5bb6e374f19b5a29c0cb5516fc5da5c0b5ac47c2f6420792e0ac8ddff11e749832a7b7f3eb5c8 |
\Users\Admin\AppData\Local\Temp\Solara.Dir\libcurl.dll
| MD5 | e31f5136d91bad0fcbce053aac798a30 |
| SHA1 | ee785d2546aec4803bcae08cdebfd5d168c42337 |
| SHA256 | ee94e2201870536522047e6d7fe7b903a63cd2e13e20c8fffc86d0e95361e671 |
| SHA512 | a1543eb1d10d25efb44f9eaa0673c82bfac5173055d04c0f3be4792984635a7c774df57a8e289f840627754a4e595b855d299070d469e0f1e637c3f35274abe6 |
memory/2548-1487-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1488-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1489-0x0000000180000000-0x0000000180E54000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\bin\path.txt
| MD5 | 0e2184f1c7464b6617329fb18f107b4f |
| SHA1 | 6f22f98471e33c9db10d6f6f1728e98852e25b8f |
| SHA256 | dbf5f44e1b84a298dbbcad3c31a617d2f6cfa08eb5d16e05a5c28726c574d4eb |
| SHA512 | 8e745c0215d52e15702551f29efb882a5eba97b5f279ccc29293b1a9b1b8661bf71b548569f9a99fa35c35a15d1b6b288d3c381c1292418c36dc89e2fa0b3a37 |
memory/2548-1492-0x000002527E660000-0x000002527E668000-memory.dmp
memory/2548-1490-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1493-0x000002527E830000-0x000002527E868000-memory.dmp
memory/2548-1494-0x000002527EA50000-0x000002527EA5E000-memory.dmp
memory/2548-1496-0x00007FFEA7640000-0x00007FFEA7664000-memory.dmp
memory/2548-1495-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1497-0x00007FFE943D3000-0x00007FFE943D4000-memory.dmp
memory/2548-1500-0x00007FFE943D0000-0x00007FFE94DBC000-memory.dmp
memory/2548-1498-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1501-0x00007FFE943D0000-0x00007FFE94DBC000-memory.dmp
memory/2548-1502-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1503-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1505-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1507-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1509-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1511-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1513-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1515-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1517-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1519-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1521-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1523-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1525-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1527-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1529-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1531-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1533-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1535-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1537-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1539-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1541-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1543-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1545-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1547-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1549-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1551-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1553-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1555-0x0000000180000000-0x0000000180E54000-memory.dmp
memory/2548-1557-0x0000000180000000-0x0000000180E54000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Newtonsoft.Json.dll
| MD5 | 195ffb7167db3219b217c4fd439eedd6 |
| SHA1 | 1e76e6099570ede620b76ed47cf8d03a936d49f8 |
| SHA256 | e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d |
| SHA512 | 56eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac |
memory/2548-1592-0x000002527EB20000-0x000002527EBD2000-memory.dmp
memory/2548-1597-0x00007FFE943D0000-0x00007FFE94DBC000-memory.dmp
memory/2548-1598-0x0000000180000000-0x0000000180E54000-memory.dmp