b20a675a73f1940c54dda5cad8f5455bf4baa31d77edce3f391b12995d0abe85

Analysis

max time kernel
146s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 22:09

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General

Target

SolaraB/Solara/SolaraBootstrapper.exe
Size

12KB
MD5

74494703e5f44eeb9aa037f0f50bf682
SHA1

fcfd8813e63cd61c5bfd2db605827fb9070fe8e9
SHA256

3e4f692506d372bebc12d344c5f1543b67fa1dbe095c910aab78456510d7fe66
SHA512

dbd2a8d928c797c70c4286d8ebabe202902445ed60e94eeccf33c7e3d794c7e362139187dcd1a57a4919503c1c791cfbe38f6f6eff454248382b3c4e023791fe
SSDEEP

192:WrnDHbLupIapaLPr/XKnxxTc1l6VXtrNjA:WrnzHUIapazzKxm1cVdZj

Score

9^/10

evasion themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

XcHvYYrNa.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ XcHvYYrNa.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	XcHvYYrNa.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

XcHvYYrNa.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	XcHvYYrNa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	XcHvYYrNa.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

SolaraBootstrapper.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	SolaraBootstrapper.exe

Executes dropped EXE 1 IoCs

Processes:

XcHvYYrNa.exe

pid process

644 XcHvYYrNa.exe
Loads dropped DLL 6 IoCs

Processes:

XcHvYYrNa.exe

pid process

644 XcHvYYrNa.exe
644 XcHvYYrNa.exe
644 XcHvYYrNa.exe
644 XcHvYYrNa.exe
644 XcHvYYrNa.exe
644 XcHvYYrNa.exe

pid	process
644	XcHvYYrNa.exe

pid	process
644	XcHvYYrNa.exe
644	XcHvYYrNa.exe
644	XcHvYYrNa.exe
644	XcHvYYrNa.exe
644	XcHvYYrNa.exe
644	XcHvYYrNa.exe

Themida packer 9 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.dll	themida
behavioral1/memory/644-1499-0x0000000180000000-0x0000000180C2E000-memory.dmp	themida
behavioral1/memory/644-1500-0x0000000180000000-0x0000000180C2E000-memory.dmp	themida
behavioral1/memory/644-1502-0x0000000180000000-0x0000000180C2E000-memory.dmp	themida
behavioral1/memory/644-1503-0x0000000180000000-0x0000000180C2E000-memory.dmp	themida
behavioral1/memory/644-1504-0x0000000180000000-0x0000000180C2E000-memory.dmp	themida
behavioral1/memory/644-1508-0x0000000180000000-0x0000000180C2E000-memory.dmp	themida
behavioral1/memory/644-1532-0x0000000180000000-0x0000000180C2E000-memory.dmp	themida
behavioral1/memory/644-1534-0x0000000180000000-0x0000000180C2E000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

XcHvYYrNa.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA XcHvYYrNa.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

10 raw.githubusercontent.com
11 raw.githubusercontent.com
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

XcHvYYrNa.exe

pid process

644 XcHvYYrNa.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

SolaraBootstrapper.exe

description pid process

Token: SeDebugPrivilege 3436 SolaraBootstrapper.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	XcHvYYrNa.exe

flow	ioc
10	raw.githubusercontent.com
11	raw.githubusercontent.com

pid	process
644	XcHvYYrNa.exe

description	pid	process
Token: SeDebugPrivilege	3436	SolaraBootstrapper.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

SolaraBootstrapper.exe

description	pid	process	target process
PID 3436 wrote to memory of 644	3436	SolaraBootstrapper.exe	XcHvYYrNa.exe
PID 3436 wrote to memory of 644	3436	SolaraBootstrapper.exe	XcHvYYrNa.exe

C:\Users\Admin\AppData\Local\Temp\SolaraB\Solara\SolaraBootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraB\Solara\SolaraBootstrapper.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3436

C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.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:644

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Core.dll
Filesize
488KB

MD5
851fee9a41856b588847cf8272645f58

SHA1
ee185a1ff257c86eb19d30a191bf0695d5ac72a1

SHA256
5e7faee6b8230ca3b97ce9542b914db3abbbd1cb14fd95a39497aaad4c1094ca

SHA512
cf5c70984cf33e12cf57116da1f282a5bd6433c570831c185253d13463b0b9a0b9387d4d1bf4dddab3292a5d9ba96d66b6812e9d7ebc5eb35cb96eea2741348f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Wpf.dll
Filesize
43KB

MD5
34ec990ed346ec6a4f14841b12280c20

SHA1
6587164274a1ae7f47bdb9d71d066b83241576f0

SHA256
1e987b22cd011e4396a0805c73539586b67df172df75e3dded16a77d31850409

SHA512
b565015ca4b11b79ecbc8127f1fd40c986948050f1caefdd371d34ed2136af0aabf100863dc6fd16d67e3751d44ee13835ea9bf981ac0238165749c4987d1ae0

Download Submit
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

Download Submit
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

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\hasown\.nycrc
Filesize
216B

MD5
c2ab942102236f987048d0d84d73d960

SHA1
95462172699187ac02eaec6074024b26e6d71cff

SHA256
948366fea3b423a46366326d0bb2e54b08abd1cf0b243678ba6625740c40da5a

SHA512
e36b20c16ceeb090750f3865efc8d7fd983ae4e8b41c30cc3865d2fd4925bf5902627e1f1ed46c0ff2453f076ef9de34be899ef57754b29cd158440071318479

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Monaco\fileaccess\node_modules\vary\LICENSE
Filesize
1KB

MD5
13babc4f212ce635d68da544339c962b

SHA1
4881ad2ec8eb2470a7049421047c6d076f48f1de

SHA256
bd47ce7b88c7759630d1e2b9fcfa170a0f1fde522be09e13fb1581a79d090400

SHA512
40e30174433408e0e2ed46d24373b12def47f545d9183b7bce28d4ddd8c8bb528075c7f20e118f37661db9f1bba358999d81a14425eb3e0a4a20865dfcb53182

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Wpf.Ui.dll
Filesize
5.2MB

MD5
aead90ab96e2853f59be27c4ec1e4853

SHA1
43cdedde26488d3209e17efff9a51e1f944eb35f

SHA256
46cfbe804b29c500ebc0b39372e64c4c8b4f7a8e9b220b5f26a9adf42fcb2aed

SHA512
f5044f2ee63906287460b9adabfcf3c93c60b51c86549e33474c4d7f81c4f86cd03cd611df94de31804c53006977874b8deb67c4bf9ea1c2b70c459b3a44b38d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.dll
Filesize
5.2MB

MD5
85b0dcb64053e35280477d88e1e05505

SHA1
70ebc4da4ac422bb47c1c49114d935d01848436b

SHA256
0c11716983653fef7d0f403c31429d9730c3c182eecc2e518ab98b4de6dd6730

SHA512
2f79e49f093fd0aaef79cbda75924ddec34a8172182a5cb7ddcde5227897f46e9e55dccf310779918afd1144f2af9a003d58939b5e631ecda147c81b95ad4d64

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.exe
Filesize
85KB

MD5
5e1bc1ad542dc2295d546d25142d9629

SHA1
dd697d1faceee724b5b6ae746116e228fe202d98

SHA256
9cc1a5b9fd49158f5cca4b28475a518cb60330e0cad98539d2a56d9930bdf9f9

SHA512
dc9dbecec37e47dd756cd00517f1bfe5b27832bd43c77f365defc649922cb7967eb7e5de76d79478b6ebfd99a1cc2e7e6b5119a05a42fd51a1c091b6f00f2456

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\libcurl.dll
Filesize
522KB

MD5
e31f5136d91bad0fcbce053aac798a30

SHA1
ee785d2546aec4803bcae08cdebfd5d168c42337

SHA256
ee94e2201870536522047e6d7fe7b903a63cd2e13e20c8fffc86d0e95361e671

SHA512
a1543eb1d10d25efb44f9eaa0673c82bfac5173055d04c0f3be4792984635a7c774df57a8e289f840627754a4e595b855d299070d469e0f1e637c3f35274abe6

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\runtimes\win-x64\native\WebView2Loader.dll
Filesize
133KB

MD5
a0bd0d1a66e7c7f1d97aedecdafb933f

SHA1
dd109ac34beb8289030e4ec0a026297b793f64a3

SHA256
79d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36

SHA512
2a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\vcruntime140.dll
Filesize
99KB

MD5
7a2b8cfcd543f6e4ebca43162b67d610

SHA1
c1c45a326249bf0ccd2be2fbd412f1a62fb67024

SHA256
7d7ca28235fba5603a7f40514a552ac7efaa67a5d5792bb06273916aa8565c5f

SHA512
e38304fb9c5af855c1134f542adf72cde159fab64385533eafa5bb6e374f19b5a29c0cb5516fc5da5c0b5ac47c2f6420792e0ac8ddff11e749832a7b7f3eb5c8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\zlib1.dll
Filesize
113KB

MD5
75365924730b0b2c1a6ee9028ef07685

SHA1
a10687c37deb2ce5422140b541a64ac15534250f

SHA256
945e7f5d09938b7769a4e68f4ef01406e5af9f40db952cba05ddb3431dd1911b

SHA512
c1e31c18903e657203ae847c9af601b1eb38efa95cb5fa7c1b75f84a2cba9023d08f1315c9bb2d59b53256dfdb3bac89930252138475491b21749471adc129a1

Download Submit
memory/644-1476-0x00007FFD31B03000-0x00007FFD31B05000-memory.dmp

Filesize
8KB

Download
memory/644-1499-0x0000000180000000-0x0000000180C2E000-memory.dmp

Filesize
12.2MB

Download
memory/644-1480-0x00007FFD31B00000-0x00007FFD325C1000-memory.dmp

Filesize
10.8MB

Download
memory/644-1482-0x000001715A930000-0x000001715A9EA000-memory.dmp

Filesize
744KB

Download
memory/644-1534-0x0000000180000000-0x0000000180C2E000-memory.dmp

Filesize
12.2MB

Download
memory/644-1484-0x000001715A870000-0x000001715A8EE000-memory.dmp

Filesize
504KB

Download
memory/644-1486-0x00000171407E0000-0x00000171407EE000-memory.dmp

Filesize
56KB

Download
memory/644-1477-0x000001713EA50000-0x000001713EA6A000-memory.dmp

Filesize
104KB

Download
memory/644-1532-0x0000000180000000-0x0000000180C2E000-memory.dmp

Filesize
12.2MB

Download
memory/644-1511-0x00007FFD31B00000-0x00007FFD325C1000-memory.dmp

Filesize
10.8MB

Download
memory/644-1510-0x00007FFD31B03000-0x00007FFD31B05000-memory.dmp

Filesize
8KB

Download
memory/644-1508-0x0000000180000000-0x0000000180C2E000-memory.dmp

Filesize
12.2MB

Download
memory/644-1507-0x000001715B570000-0x000001715B57E000-memory.dmp

Filesize
56KB

Download
memory/644-1481-0x000001715ACC0000-0x000001715B1FC000-memory.dmp

Filesize
5.2MB

Download
memory/644-1501-0x00007FFD29EF0000-0x00007FFD29F14000-memory.dmp

Filesize
144KB

Download
memory/644-1500-0x0000000180000000-0x0000000180C2E000-memory.dmp

Filesize
12.2MB

Download
memory/644-1502-0x0000000180000000-0x0000000180C2E000-memory.dmp

Filesize
12.2MB

Download
memory/644-1503-0x0000000180000000-0x0000000180C2E000-memory.dmp

Filesize
12.2MB

Download
memory/644-1504-0x0000000180000000-0x0000000180C2E000-memory.dmp

Filesize
12.2MB

Download
memory/644-1505-0x000001715AC80000-0x000001715AC88000-memory.dmp

Filesize
32KB

Download
memory/644-1506-0x000001715F530000-0x000001715F568000-memory.dmp

Filesize
224KB

Download
memory/3436-1-0x0000000000B60000-0x0000000000B6A000-memory.dmp

Filesize
40KB

Download
memory/3436-2-0x0000000005430000-0x000000000543A000-memory.dmp

Filesize
40KB

Download
memory/3436-3-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3436-5-0x0000000005F30000-0x0000000005F42000-memory.dmp

Filesize
72KB

Download
memory/3436-0-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/3436-1478-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download