73c05ae808cf58122419e61258a8f3deeb1d0609f84b58438cf89f8c1ba45e14

Analysis

max time kernel
146s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2023, 12:11

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General

Target

BlueStacksMicroInstaller_5.10.110.1002_native.exe
Size

797KB
MD5

0eae90ce111984e1383dbcab75115da8
SHA1

109f68927cbdd34c1d68e281d6f16faee83c71dc
SHA256

73c05ae808cf58122419e61258a8f3deeb1d0609f84b58438cf89f8c1ba45e14
SHA512

af13b646ced539dd169f7ad0a094a2afa2a9670bb033cf8b894c8f6f3a7fc62a10d954bf2462abe6b81900c30425ec5ed627c70ec09273d5b7353d1b065bb7ab
SSDEEP

12288:zivtCXQd0RYK1qv6qQdeRPHKmL3PYFrmlbBk4/XEPhIdcXXjdJ:zivtCXF1qv6qQOqqPYWtk4/Xw+dcD3

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
3448	BlueStacksInstaller.exe
2580	HD-CheckCpu.exe
4260	HD-CheckCpu.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	BlueStacksMicroInstaller_5.10.110.1002_native.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3448	BlueStacksInstaller.exe
3448	BlueStacksInstaller.exe
3448	BlueStacksInstaller.exe
3448	BlueStacksInstaller.exe
3448	BlueStacksInstaller.exe
3448	BlueStacksInstaller.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3448	BlueStacksInstaller.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 3448	1208	BlueStacksMicroInstaller_5.10.110.1002_native.exe	79
PID 1208 wrote to memory of 3448	1208	BlueStacksMicroInstaller_5.10.110.1002_native.exe	79
PID 3448 wrote to memory of 2580	3448	BlueStacksInstaller.exe	81
PID 3448 wrote to memory of 2580	3448	BlueStacksInstaller.exe	81
PID 3448 wrote to memory of 2580	3448	BlueStacksInstaller.exe	81
PID 3448 wrote to memory of 4260	3448	BlueStacksInstaller.exe	87
PID 3448 wrote to memory of 4260	3448	BlueStacksInstaller.exe	87
PID 3448 wrote to memory of 4260	3448	BlueStacksInstaller.exe	87

C:\Users\Admin\AppData\Local\Temp\BlueStacksMicroInstaller_5.10.110.1002_native.exe
"C:\Users\Admin\AppData\Local\Temp\BlueStacksMicroInstaller_5.10.110.1002_native.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\BlueStacksInstaller.exe
  "C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\BlueStacksInstaller.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3448
- - C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\HD-CheckCpu.exe
    "C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\HD-CheckCpu.exe" --cmd checkHypervEnabled
    3⤵
    - Executes dropped EXE
    PID:2580
- - C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\HD-CheckCpu.exe
    "C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\HD-CheckCpu.exe" --cmd checkSSE4
    3⤵
    - Executes dropped EXE
    PID:4260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\backicon.png

Filesize
15KB

MD5
7ff5dc8270b5fa7ef6c4a1420bd67a7f

SHA1
b224300372feaa97d882ca2552b227c0f2ef4e3e

SHA256
fa64884054171515e97b78aaa1aad1ec5baa9d1daf9c682e0b3fb4a41a9cb1c1

SHA512
f0d5a842a01b99f189f3d46ab59d2c388a974951b042b25bbce54a15f5a3f386984d19cfca22ba1440eebd79260066a37dfeff6cb0d1332fca136add14488eef

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\checked_gray.png

Filesize
538B

MD5
ce144d2aab3bf213af693d4e18f87a59

SHA1
df59dc3dbba88bdc5ffc25f2e5e7b73ac3de5afa

SHA256
d8e502fab00b0c6f06ba6abede6922ab3b423fe6f2d2f56941dabc887b229ad3

SHA512
0f930edd485a0d49ef157f6cc8856609c087c91b77845adeb5cc8c8a80ebc7ec5416df351ffa1af780caad884dbb49dcc778b0b30de6fb7c85ffef22d7220ebe

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\close_red.png

Filesize
15KB

MD5
93216b2f9d66d423b3e1311c0573332d

SHA1
5efaebec5f20f91f164f80d1e36f98c9ddaff805

SHA256
d0b6d143642d356b40c47459a996131a344cade6bb86158f1b74693426b09bfb

SHA512
922a7292de627c5e637818556d25d9842a88e89f2b198885835925679500dfd44a1e25ce79e521e63c4f84a6b0bd6bf98e46143ad8cee80ecdbaf3d3bc0f3a32

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\custom.png

Filesize
17KB

MD5
03b17f0b1c067826b0fcc6746cced2cb

SHA1
e07e4434e10df4d6c81b55fceb6eca2281362477

SHA256
fbece8bb5f4dfa55dcfbf41151b10608af807b9477e99acf0940954a11e68f7b

SHA512
67c78ec01e20e9c8d9cdbba665bb2fd2bb150356f30b88d3d400bbdb0ae92010f5d7bcb683dcf6f895722a9151d8e669d8bef913eb6e728ba56bb02f264573b2

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\installer_bg.jpg

Filesize
42KB

MD5
162c23f5962381efba79be503b41089c

SHA1
fc5a95e6eb2bb015fe27457873528c24b3bc459d

SHA256
04d70d0968675290294df78800ed48fe4a681a72803405fbdc541b927b445457

SHA512
9bd6e634d6cb362ab40f2646ca59a865f05e6049ac55b9d03b3df1f8e853715119438771196a351ca98c6cb61a212bbc0bedb7bf2d306563f6198353a7680c54

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\installer_logo.png

Filesize
7KB

MD5
d6f746b61d5c91d6688faab54ecc74c3

SHA1
9581cafbc93d6189c7e0633bd43dfd017510f731

SHA256
ed7e205b0ccdd454d4fa47c48834ad36a6e9fb51f4042a2dcd39a7fe01244d95

SHA512
0139711388976628ebd46a2f1dc7e0c38184d3b4ab63a8f2b6c8cd9e6032cddcd2dafb8ce4ab3ba8008beba9d6c3e444577cd7953bb48e39635e5c9666fdf478

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\installer_minimize.png

Filesize
113B

MD5
38b539a1e4229738e5c196eedb4eb225

SHA1
f027b08dce77c47aaed75a28a2fce218ff8c936c

SHA256
a064f417e3c2b8f3121a14bbded268b2cdf635706880b7006f931de31476bbc2

SHA512
2ce433689a94fae454ef65e0e9ec33657b89718bbb5a038bf32950f6d68722803922f3a427278bad432395a1716523e589463fcce4279dc2a895fd77434821cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\loader.png

Filesize
279B

MD5
03903fd42ed2ee3cb014f0f3b410bcb4

SHA1
762a95240607fe8a304867a46bc2d677f494f5c2

SHA256
076263cc65f9824f4f82eb6beaa594d1df90218a2ee21664cf209181557e04b1

SHA512
8b0e717268590e5287c07598a06d89220c5e9a33cd1c29c55f8720321f4b3efc869d20c61fcc892e13188d77f0fdc4c73a2ee6dece174bf876fcc3a6c5683857

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\setpath.png

Filesize
15KB

MD5
b2e7f40179744c74fded932e829cb12a

SHA1
a0059ab8158a497d2cf583a292b13f87326ec3f0

SHA256
5bbb2f41f9f3a805986c3c88a639bcc22d90067d4b8de9f1e21e3cf9e5c1766b

SHA512
b95b7ebdb4a74639276eaa5c055fd8d9431e2f58a5f7c57303f7cf22e8b599f6f2a7852074cf71b19b49eb31cc9bf2509aedf41d608981d116e49a00030c797c

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Assets\unchecked_gray.png

Filesize
192B

MD5
e50df2a0768f7fc4c3fe8d784564fea3

SHA1
d1fc4db50fe8e534019eb7ce70a61fd4c954621a

SHA256
671f26795b12008fbea1943143f660095f3dca5d925f67d765e2352fd7ee2396

SHA512
c87a8308a73b17cbdd179737631fb1ba7fdaeb65e82263f6617727519b70a81266bb695867b9e599c1306ee2cf0de525452f77ce367ca89bf870ea3ae7189998

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\BlueStacksInstaller.exe

Filesize
559KB

MD5
3d3cab7153b2575a05555b54d737ac3e

SHA1
a1d383c960ad7ae90a13c74593615c8541a2a3b3

SHA256
b95bd577b5e8a5bd4716f97c490a90923a512fa3e146c30911177b408781428f

SHA512
1d75883f5f44e443651880043c2e7c9310c35e9966d90dbcadb83c2199fab23b55bea7c4d9a5b17ced9a55ef4466ef266b762049c57b1b965d4fba37faa3d393

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\BlueStacksInstaller.exe

Filesize
559KB

MD5
3d3cab7153b2575a05555b54d737ac3e

SHA1
a1d383c960ad7ae90a13c74593615c8541a2a3b3

SHA256
b95bd577b5e8a5bd4716f97c490a90923a512fa3e146c30911177b408781428f

SHA512
1d75883f5f44e443651880043c2e7c9310c35e9966d90dbcadb83c2199fab23b55bea7c4d9a5b17ced9a55ef4466ef266b762049c57b1b965d4fba37faa3d393

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\BlueStacksInstaller.exe.config

Filesize
324B

MD5
1b456d88546e29f4f007cd0bf1025703

SHA1
e5c444fcfe5baf2ef71c1813afc3f2c1100cab86

SHA256
d6d316584b63bb0d670a42f88b8f84e0de0db4275f1a342084dc383ebeb278eb

SHA512
c545e416c841b8786e4589fc9ca2b732b16cdd759813ec03f558332f2436f165ec1ad2fbc65012b5709fa19ff1e8396639c17bfad150cabeb51328a39ea556e6

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\HD-CheckCpu.exe

Filesize
211KB

MD5
764ac83167adcd8d2273f6bff7d769b2

SHA1
bf6a46b8c03d7efb16fdd6e4ce0a5e4362f41957

SHA256
e81e0444ba2deb4056872d1c4f9b01971bb4fb376c6434c942718da7c39190bf

SHA512
a3a484aaf5cfdff1c198c37f3055409dc066646db3d61e74bfef2b4ce212d95fd43d3e3b239e080ba9fab62eae23cd4b54b6b466fad3192845b43d4212ccd667

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\HD-CheckCpu.exe

Filesize
211KB

MD5
764ac83167adcd8d2273f6bff7d769b2

SHA1
bf6a46b8c03d7efb16fdd6e4ce0a5e4362f41957

SHA256
e81e0444ba2deb4056872d1c4f9b01971bb4fb376c6434c942718da7c39190bf

SHA512
a3a484aaf5cfdff1c198c37f3055409dc066646db3d61e74bfef2b4ce212d95fd43d3e3b239e080ba9fab62eae23cd4b54b6b466fad3192845b43d4212ccd667

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\HD-CheckCpu.exe

Filesize
211KB

MD5
764ac83167adcd8d2273f6bff7d769b2

SHA1
bf6a46b8c03d7efb16fdd6e4ce0a5e4362f41957

SHA256
e81e0444ba2deb4056872d1c4f9b01971bb4fb376c6434c942718da7c39190bf

SHA512
a3a484aaf5cfdff1c198c37f3055409dc066646db3d61e74bfef2b4ce212d95fd43d3e3b239e080ba9fab62eae23cd4b54b6b466fad3192845b43d4212ccd667

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\JSON.dll

Filesize
411KB

MD5
f5fd966e29f5c359f78cb61a571d1be4

SHA1
a55e7ed593b4bc7a77586da0f1223cfd9d51a233

SHA256
d2c8d26f95f55431e632c8581154db7c19547b656380e051194a9d2583dd2156

SHA512
d99e6fe250bb106257f86135938635f6e7ad689b2c11a96bb274f4c4c5e9a85cfacba40122dbc953f77b5d33d886c6af30bff821f10945e15b21a24b66f6c8be

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\Locales\i18n.en-US.txt

Filesize
17KB

MD5
d8316371294c2e3fd9cded40261e0e17

SHA1
39a33c431d2a5085fa421f7183cd705d8282d010

SHA256
2b8f16a7ba900b7d5602697c2a028cf4a55f451394ef36ad1b83fe94aa5f534d

SHA512
98e55fdaec682e1ac92386115862a17df2ba14f6991125b548bcd1699ecf88043ba26ad28772434a9e25e50f46ed24ffd03414ce4f01be630b2daf15e4ad55e8

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8B4222B6\ThemeFile

Filesize
80KB

MD5
c3e6bab4f92ee40b9453821136878993

SHA1
94493a6b3dfb3135e5775b7d3be227659856fbc4

SHA256
de1a2e6b560e036da5ea6b042e29e81a5bfcf67dde89670c332fc5199e811ba6

SHA512
a64b6b06b3a0f3591892b60e59699682700f4018b898efe55d6bd5fb417965a55027671c58092d1eb7e21c2dbac42bc68dfb8c70468d98bed45a8cff0e945895

Download Submit
memory/3448-148-0x000000001DBE0000-0x000000001DBEE000-memory.dmp

Filesize
56KB

Download
memory/3448-147-0x000000001DC10000-0x000000001DC48000-memory.dmp

Filesize
224KB

Download
memory/3448-145-0x000000001DD30000-0x000000001E258000-memory.dmp

Filesize
5.2MB

Download
memory/3448-139-0x00000000022F0000-0x0000000002358000-memory.dmp

Filesize
416KB

Download
memory/3448-137-0x00007FF852980000-0x00007FF853441000-memory.dmp

Filesize
10.8MB

Download
memory/3448-159-0x0000000022F80000-0x0000000022F88000-memory.dmp

Filesize
32KB

Download
memory/3448-136-0x0000000000070000-0x0000000000100000-memory.dmp

Filesize
576KB

Download
memory/3448-161-0x00007FF852980000-0x00007FF853441000-memory.dmp

Filesize
10.8MB

Download