b20a675a73f1940c54dda5cad8f5455bf4baa31d77edce3f391b12995d0abe85

Analysis

max time kernel
142s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 00:22

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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\VideoBiosVersion	XcHvYYrNa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	SolaraBootstrapper.exe

Executes dropped EXE 1 IoCs

Processes:

XcHvYYrNa.exe

pid process

1600 XcHvYYrNa.exe
Loads dropped DLL 5 IoCs

Processes:

XcHvYYrNa.exe

pid process

1600 XcHvYYrNa.exe
1600 XcHvYYrNa.exe
1600 XcHvYYrNa.exe
1600 XcHvYYrNa.exe
1600 XcHvYYrNa.exe

pid	process
1600	XcHvYYrNa.exe

pid	process
1600	XcHvYYrNa.exe
1600	XcHvYYrNa.exe
1600	XcHvYYrNa.exe
1600	XcHvYYrNa.exe
1600	XcHvYYrNa.exe

Themida packer 3 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
behavioral2/memory/1600-1891-0x0000000180000000-0x0000000180ACA000-memory.dmp	themida
behavioral2/memory/1600-1892-0x0000000180000000-0x0000000180ACA000-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 3 IoCs

Web Service
T1102

Processes:

flow ioc

9 raw.githubusercontent.com
10 raw.githubusercontent.com
33 raw.githubusercontent.com
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 3112 SolaraBootstrapper.exe

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

flow	ioc
9	raw.githubusercontent.com
10	raw.githubusercontent.com
33	raw.githubusercontent.com

description	pid	process
Token: SeDebugPrivilege	3112	SolaraBootstrapper.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

SolaraBootstrapper.exe

description	pid	process	target process
PID 3112 wrote to memory of 1600	3112	SolaraBootstrapper.exe	XcHvYYrNa.exe
PID 3112 wrote to memory of 1600	3112	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:3112

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
PID:1600

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4384,i,15142778360084620907,1763097090506261076,262144 --variations-seed-version --mojo-platform-channel-handle=4356 /prefetch:8
1⤵
PID:740

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\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\WebView2Loader.dll
Filesize
133KB

MD5
a0bd0d1a66e7c7f1d97aedecdafb933f

SHA1
dd109ac34beb8289030e4ec0a026297b793f64a3

SHA256
79d7e45f8631e8d2541d01bfb5a49a3a090be72b3d465389a2d684680fee2e36

SHA512
2a50ae5c7234a44b29f82ebc2e3cfed37bf69294eb00b2dc8905c61259975b2f3a059c67aeab862f002752454d195f7191d9b82b056f6ef22d6e1b0bb3673d50

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.dll
Filesize
4.2MB

MD5
114498719219c2427758b1ad9a11a991

SHA1
742896c8ec63ddbf15bab5c1011eff512b9af722

SHA256
913059869dca00dfa49bcf2691b384eb9804739d9148e3671cf1d6b89c828c42

SHA512
4f36ea0c5e8af8087ecf92fa49e157dcc94a1cc68563fc97b3fe026b92c0abdbe640bf347c24a666f59b60380367f85daab1a15e2c4902921e63e1b741c01452

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\XcHvYYrNa.exe.WebView2\EBWebView\Default\Extension State\CURRENT
Filesize
16B

MD5
46295cac801e5d4857d09837238a6394

SHA1
44e0fa1b517dbf802b18faf0785eeea6ac51594b

SHA256
0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

SHA512
8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.exe.WebView2\EBWebView\Default\Extension State\MANIFEST-000001
Filesize
41B

MD5
5af87dfd673ba2115e2fcf5cfdb727ab

SHA1
d5b5bbf396dc291274584ef71f444f420b6056f1

SHA256
f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4

SHA512
de34583a7dbafe4dd0dc0601e8f6906b9bc6a00c56c9323561204f77abbc0dc9007c480ffe4092ff2f194d54616caf50aecbd4a1e9583cae0c76ad6dd7c2375b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.exe.WebView2\EBWebView\Default\Shared Dictionary\cache\index
Filesize
24B

MD5
54cb446f628b2ea4a5bce5769910512e

SHA1
c27ca848427fe87f5cf4d0e0e3cd57151b0d820d

SHA256
fbcfe23a2ecb82b7100c50811691dde0a33aa3da8d176be9882a9db485dc0f2d

SHA512
8f6ed2e91aed9bd415789b1dbe591e7eab29f3f1b48fdfa5e864d7bf4ae554acc5d82b4097a770dabc228523253623e4296c5023cf48252e1b94382c43123cb0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.exe.WebView2\EBWebView\GraphiteDawnCache\data_0
Filesize
8KB

MD5
cf89d16bb9107c631daabf0c0ee58efb

SHA1
3ae5d3a7cf1f94a56e42f9a58d90a0b9616ae74b

SHA256
d6a5fe39cd672781b256e0e3102f7022635f1d4bb7cfcc90a80fffe4d0f3877e

SHA512
8cb5b059c8105eb91e74a7d5952437aaa1ada89763c5843e7b0f1b93d9ebe15ed40f287c652229291fac02d712cf7ff5ececef276ba0d7ddc35558a3ec3f77b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.exe.WebView2\EBWebView\GraphiteDawnCache\data_1
Filesize
264KB

MD5
17bd7672040db656308d76d6e66a3095

SHA1
8ed1945d141244a8807a94d78f9150f4a311a31f

SHA256
73c89191d5808f65ddf660bff7827dd0aaa68747418749c5f2835bb824a0e665

SHA512
c3c8fdb9212f7187715454a64f4888f8cbe4805b8d0f754875fc11d623df27976c62eb58c64f35399d6e63d3094262ab9169c0255653d177feced62d8d6aa0b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.exe.WebView2\EBWebView\GraphiteDawnCache\data_2
Filesize
8KB

MD5
0962291d6d367570bee5454721c17e11

SHA1
59d10a893ef321a706a9255176761366115bedcb

SHA256
ec1702806f4cc7c42a82fc2b38e89835fde7c64bb32060e0823c9077ca92efb7

SHA512
f555e961b69e09628eaf9c61f465871e6984cd4d31014f954bb747351dad9cea6d17c1db4bca2c1eb7f187cb5f3c0518748c339c8b43bbd1dbd94aeaa16f58ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\Solara.Dir\XcHvYYrNa.exe.WebView2\EBWebView\GraphiteDawnCache\data_3
Filesize
8KB

MD5
41876349cb12d6db992f1309f22df3f0

SHA1
5cf26b3420fc0302cd0a71e8d029739b8765be27

SHA256
e09f42c398d688dce168570291f1f92d079987deda3099a34adb9e8c0522b30c

SHA512
e9a4fc1f7cb6ae2901f8e02354a92c4aaa7a53c640dcf692db42a27a5acc2a3bfb25a0de0eb08ab53983132016e7d43132ea4292e439bb636aafd53fb6ef907e

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\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/1600-1891-0x0000000180000000-0x0000000180ACA000-memory.dmp

Filesize
10.8MB

Download
memory/1600-1892-0x0000000180000000-0x0000000180ACA000-memory.dmp

Filesize
10.8MB

Download
memory/3112-1-0x0000000000BA0000-0x0000000000BAA000-memory.dmp

Filesize
40KB

Download
memory/3112-5-0x0000000005E20000-0x0000000005E32000-memory.dmp

Filesize
72KB

Download
memory/3112-2-0x0000000005330000-0x000000000533A000-memory.dmp

Filesize
40KB

Download
memory/3112-1885-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/3112-0-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/3112-3-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download