Malware Analysis Report

2024-10-10 07:50

Sample ID 240615-zjvd9atdjc
Target SolaraBootstrapper.exe
SHA256 a7fecfc225dfdd4e14dcd4d1b4ba1b9f8e4d1984f1cdd8cda3a9987e5d53c239
Tags
evasion themida trojan
score
9/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
9/10

SHA256

a7fecfc225dfdd4e14dcd4d1b4ba1b9f8e4d1984f1cdd8cda3a9987e5d53c239

Threat Level: Likely malicious

The file SolaraBootstrapper.exe was found to be: Likely malicious.

Malicious Activity Summary

evasion themida trojan

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Checks BIOS information in registry

Checks computer location settings

Themida packer

Executes dropped EXE

Loads dropped DLL

Checks whether UAC is enabled

Legitimate hosting services abused for malware hosting/C2

Suspicious use of NtSetInformationThreadHideFromDebugger

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-15 20:45

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 20:45

Reported

2024-06-15 20:47

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
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\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.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

Themida packer

themida
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks whether UAC is enabled

evasion trojan
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
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Solara.Dir\cd57e4c171d6e8f5ea8b8f824a6a7316.exe N/A

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"

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 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 raw.githubusercontent.com udp
US 185.199.111.133:443 raw.githubusercontent.com tcp
BE 88.221.83.209:443 www.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 215.156.26.20.in-addr.arpa udp
US 8.8.8.8:53 133.111.199.185.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 209.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 185.199.111.133:443 raw.githubusercontent.com tcp
N/A 127.0.0.1:63222 tcp
US 185.199.111.133:443 raw.githubusercontent.com tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 31.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 196.131.50.23.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2700-0-0x0000000074C7E000-0x0000000074C7F000-memory.dmp

memory/2700-1-0x0000000000420000-0x000000000042A000-memory.dmp

memory/2700-2-0x0000000002800000-0x000000000280A000-memory.dmp

memory/2700-3-0x0000000074C70000-0x0000000075420000-memory.dmp

memory/2700-5-0x0000000005900000-0x0000000005912000-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 d213a75b1956398e4c36bcc2f93339bf
SHA1 6a2739cc0e67f5593c744fbcbc8f00f12eef9954
SHA256 ece75d080f94df4b3699389021337b1536cfed229d1325f09b03f0b0d6d85ab4
SHA512 d32ddaf4c6f8f8df6c390d683e6c039f3b0d8f35f68f690b28bf88b17caedf0e11abd3aeb2e46238d0cd0a91b2db095cca0782b4e27f04453ea4cb6db38f4dd7

memory/4864-1471-0x00007FFCCCDE3000-0x00007FFCCCDE5000-memory.dmp

memory/4864-1472-0x0000014D8CA10000-0x0000014D8CA2A000-memory.dmp

memory/2700-1473-0x0000000074C70000-0x0000000075420000-memory.dmp

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

MD5 aead90ab96e2853f59be27c4ec1e4853
SHA1 43cdedde26488d3209e17efff9a51e1f944eb35f
SHA256 46cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed
SHA512 f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d

memory/4864-1475-0x00007FFCCCDE0000-0x00007FFCCD8A1000-memory.dmp

memory/4864-1476-0x0000014DA8EA0000-0x0000014DA93DC000-memory.dmp

memory/4864-1477-0x0000014DA8960000-0x0000014DA8A1A000-memory.dmp

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

MD5 34ec990ed346ec6a4f14841b12280c20
SHA1 6587164274a1ae7f47bdb9d71d066b83241576f0
SHA256 1e987b22cd011e4396a0805c73539586b67df172df75e3dded16a77d31850409
SHA512 b565015ca4b11b79ecbc8127f1fd40c986948050f1caefdd371d34ed2136af0aabf100863dc6fd16d67e3751d44ee13835ea9bf981ac0238165749c4987d1ae0

memory/4864-1479-0x0000014D8E840000-0x0000014D8E84E000-memory.dmp

memory/4864-1480-0x00007FFCCCDE0000-0x00007FFCCD8A1000-memory.dmp

memory/4864-1481-0x00007FFCCCDE0000-0x00007FFCCD8A1000-memory.dmp

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

MD5 851fee9a41856b588847cf8272645f58
SHA1 ee185a1ff257c86eb19d30a191bf0695d5ac72a1
SHA256 5e7faee6b8230ca3b97ce9542b914db3abbbd1cb14fd95a39497aaad4c1094ca
SHA512 cf5c70984cf33e12cf57116da1f282a5bd6433c570831c185253d13463b0b9a0b9387d4d1bf4dddab3292a5d9ba96d66b6812e9d7ebc5eb35cb96eea2741348f

memory/4864-1483-0x0000014DA93E0000-0x0000014DA945E000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Solara.Dir\WebView2Loader.dll

MD5 a0bd0d1a66e7c7f1d97aedecdafb933f
SHA1 dd109ac34beb8289030e4ec0a026297b793f64a3
SHA256 79d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36
SHA512 2a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50

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

MD5 c2bde3ba169916206ef61ce2af29abd5
SHA1 9ea8cc423fdd68280988d94f2eac468e445d34f8
SHA256 2099337afdfc49b325763e2e741253aac15c195e0010039a625459e8ea1ac526
SHA512 442e5935be20dd345fb9940113a7db2e06649eb36fc79a4b7128e3054c8a27a34c62b826397b2d46810ea32f3b2d8367bb375b7996019fcbc2d400dff5f21ca0

C:\Users\Admin\AppData\Local\Temp\Solara.Dir\VCRUNTIME140.dll

MD5 7a2b8cfcd543f6e4ebca43162b67d610
SHA1 c1c45a326249bf0ccd2be2fbd412f1a62fb67024
SHA256 7d7ca28235fba5603a7f40514a552ac7efaa67a5d5792bb06273916aa8565c5f
SHA512 e38304fb9c5af855c1134f542adf72cde159fab64385533eafa5bb6e374f19b5a29c0cb5516fc5da5c0b5ac47c2f6420792e0ac8ddff11e749832a7b7f3eb5c8

C:\Users\Admin\AppData\Local\Temp\Solara.Dir\zlib1.dll

MD5 75365924730b0b2c1a6ee9028ef07685
SHA1 a10687c37deb2ce5422140b541a64ac15534250f
SHA256 945e7f5d09938b7769a4e68f4ef01406e5af9f40db952cba05ddb3431dd1911b
SHA512 c1e31c18903e657203ae847c9af601b1eb38efa95cb5fa7c1b75f84a2cba9023d08f1315c9bb2d59b53256dfdb3bac89930252138475491b21749471adc129a1

C:\Users\Admin\AppData\Local\Temp\Solara.Dir\libcurl.dll

MD5 e31f5136d91bad0fcbce053aac798a30
SHA1 ee785d2546aec4803bcae08cdebfd5d168c42337
SHA256 ee94e2201870536522047e6d7fe7b903a63cd2e13e20c8fffc86d0e95361e671
SHA512 a1543eb1d10d25efb44f9eaa0673c82bfac5173055d04c0f3be4792984635a7c774df57a8e289f840627754a4e595b855d299070d469e0f1e637c3f35274abe6

memory/4864-1494-0x0000000180000000-0x0000000180AC0000-memory.dmp

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

MD5 4cf94ffa50fd9bdc0bb93cceaede0629
SHA1 3e30eca720f4c2a708ec53fd7f1ba9e778b4f95f
SHA256 50b2e46c99076f6fa9c33e0a98f0fe3a2809a7c647bb509066e58f4c7685d7e6
SHA512 dc400518ef2f68920d90f1ce66fbb8f4dde2294e0efeecd3d9329aa7a66e1ab53487b120e13e15f227ea51784f90208c72d7fbfa9330d9b71dd9a1a727d11f98

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

MD5 0e2184f1c7464b6617329fb18f107b4f
SHA1 6f22f98471e33c9db10d6f6f1728e98852e25b8f
SHA256 dbf5f44e1b84a298dbbcad3c31a617d2f6cfa08eb5d16e05a5c28726c574d4eb
SHA512 8e745c0215d52e15702551f29efb882a5eba97b5f279ccc29293b1a9b1b8661bf71b548569f9a99fa35c35a15d1b6b288d3c381c1292418c36dc89e2fa0b3a37

memory/4864-1497-0x0000014DA8920000-0x0000014DA8928000-memory.dmp

memory/4864-1498-0x0000014DAD8F0000-0x0000014DAD928000-memory.dmp

memory/4864-1499-0x0000014DA8E90000-0x0000014DA8E9E000-memory.dmp

memory/4864-1500-0x00007FFCCCDE3000-0x00007FFCCCDE5000-memory.dmp

memory/4864-1501-0x00007FFCCCDE0000-0x00007FFCCD8A1000-memory.dmp

memory/4864-1502-0x00007FFCCCDE0000-0x00007FFCCD8A1000-memory.dmp

memory/4864-1503-0x00007FFCCCDE0000-0x00007FFCCD8A1000-memory.dmp

memory/4864-1504-0x0000000180000000-0x0000000180AC0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Newtonsoft.Json.dll

MD5 195ffb7167db3219b217c4fd439eedd6
SHA1 1e76e6099570ede620b76ed47cf8d03a936d49f8
SHA256 e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d
SHA512 56eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac

memory/4864-1506-0x0000014DA9520000-0x0000014DA95D2000-memory.dmp

memory/4864-1507-0x00007FFCCCDE0000-0x00007FFCCD8A1000-memory.dmp

memory/4864-1508-0x0000000180000000-0x0000000180AC0000-memory.dmp