Analysis Overview
SHA256
9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34
Threat Level: Known bad
The file 9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34 was found to be: Known bad.
Malicious Activity Summary
Modifies visiblity of hidden/system files in Explorer
UPX dump on OEP (original entry point)
UPX dump on OEP (original entry point)
Executes dropped EXE
Loads dropped DLL
UPX packed file
Adds Run key to start application
Drops file in System32 directory
Drops file in Windows directory
Unsigned PE
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-04 00:35
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-04 00:35
Reported
2024-06-04 00:38
Platform
win7-20240221-en
Max time kernel
150s
Max time network
123s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\svchost.exe | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" | \??\c:\windows\resources\svchost.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" | \??\c:\windows\resources\svchost.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\explorer.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\explorer.exe | \??\c:\windows\resources\svchost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\windows\resources\spoolsv.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | \??\c:\windows\resources\svchost.exe | \??\c:\windows\resources\spoolsv.exe | N/A |
| File opened for modification | C:\Windows\Resources\tjud.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | \??\c:\windows\resources\themes\explorer.exe | C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe
"C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe"
\??\c:\windows\resources\themes\explorer.exe
c:\windows\resources\themes\explorer.exe
\??\c:\windows\resources\spoolsv.exe
c:\windows\resources\spoolsv.exe SE
\??\c:\windows\resources\svchost.exe
c:\windows\resources\svchost.exe
\??\c:\windows\resources\spoolsv.exe
c:\windows\resources\spoolsv.exe PR
C:\Windows\Explorer.exe
C:\Windows\Explorer.exe
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:38 /f
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:39 /f
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:40 /f
Network
Files
memory/1728-57-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3028-56-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2548-54-0x0000000000400000-0x0000000000422000-memory.dmp
C:\Windows\Resources\spoolsv.exe
| MD5 | f4effff33b5d7d43c9838466c8c1c9aa |
| SHA1 | ddbe0c1309e63d839c7a7c266b7c90fd9ca8d609 |
| SHA256 | e7e2beb931f25365ecc1650f94490bdb20934983d50274def475baff83f626f2 |
| SHA512 | f8baf359cbb366df04e4e409d2d59aeb1b961ffb592ca340a446920edaaaa33a4c054f8122b5de4869e0034c2684ffd4f7813a36b91e3e205392db047caf2be8 |
\??\c:\windows\resources\svchost.exe
| MD5 | 1b7ed222c8d94f8c708b1a253be5ee4a |
| SHA1 | 67078dd40641db4aed2bb864c149ce737c5f909a |
| SHA256 | 9bfda10129ab4885f82e147382c0219adb6048a7e2d682f7302a0394d88de749 |
| SHA512 | 998302f5bd11c7bfe2ad0d305aebca27718f832fe688537795e2a4736c46b793102a4fd7e66408254c6d352d81c05e74a485aee0f4f660541ee4b26f35f551b4 |
memory/3028-43-0x00000000002C0000-0x00000000002E2000-memory.dmp
memory/2884-29-0x0000000000260000-0x0000000000282000-memory.dmp
\??\c:\windows\resources\themes\explorer.exe
| MD5 | 301ba6945f02398345678284d8604fbc |
| SHA1 | aadc20fd55eb50714f45680e6c3c87b0f5d50167 |
| SHA256 | 70eada70a7e9ea65749540208e19443d45cdf3dd48d00fff63344c3ef6cd7258 |
| SHA512 | d3a367ad1076f7aa6ec4d09fe605700ea275dcb78f175104c48651ce6ed908c94457f52961f9c480ad613cb488fa820b4200071a6b2fcbf0335e694bf1d09d45 |
memory/1728-12-0x0000000000280000-0x00000000002A2000-memory.dmp
memory/2884-15-0x0000000000400000-0x0000000000422000-memory.dmp
memory/1728-13-0x0000000000280000-0x00000000002A2000-memory.dmp
memory/1728-0-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2884-58-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2656-59-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2884-68-0x0000000000400000-0x0000000000422000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-04 00:35
Reported
2024-06-04 00:38
Platform
win10v2004-20240508-en
Max time kernel
150s
Max time network
127s
Command Line
Signatures
Modifies visiblity of hidden/system files in Explorer
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" | \??\c:\windows\resources\svchost.exe | N/A |
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" | \??\c:\windows\resources\themes\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO" | \??\c:\windows\resources\svchost.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO" | \??\c:\windows\resources\svchost.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\explorer.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\explorer.exe | \??\c:\windows\resources\svchost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | \??\c:\windows\resources\themes\explorer.exe | C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe | N/A |
| File opened for modification | \??\c:\windows\resources\spoolsv.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
| File opened for modification | \??\c:\windows\resources\svchost.exe | \??\c:\windows\resources\spoolsv.exe | N/A |
| File opened for modification | C:\Windows\Resources\tjud.exe | \??\c:\windows\resources\themes\explorer.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\themes\explorer.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\svchost.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
| N/A | N/A | \??\c:\windows\resources\spoolsv.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe
"C:\Users\Admin\AppData\Local\Temp\9a0521003ca31bafa42375862c38ab408ee579950ae9a918ec683b02ad6aee34.exe"
\??\c:\windows\resources\themes\explorer.exe
c:\windows\resources\themes\explorer.exe
\??\c:\windows\resources\spoolsv.exe
c:\windows\resources\spoolsv.exe SE
\??\c:\windows\resources\svchost.exe
c:\windows\resources\svchost.exe
\??\c:\windows\resources\spoolsv.exe
c:\windows\resources\spoolsv.exe PR
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=4364,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=4404 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| NL | 23.62.61.129:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 58.99.105.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 129.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| 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 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.73.42.20.in-addr.arpa | udp |
Files
memory/2788-0-0x0000000000400000-0x0000000000422000-memory.dmp
C:\Windows\Resources\Themes\explorer.exe
| MD5 | a5240f9bf961f57264e4e5b147764132 |
| SHA1 | 5cd2ac172da4b2ad001a3f1e184ae044f08f36c7 |
| SHA256 | 553a4f4f7fd07e12131d71cc0273cfac06b3c1b63daa8b89b0971438d19e748a |
| SHA512 | 7290b8468d97e23abd6225bb0890f63e7598691a4472c1eda021dc9bbd973e3f0e25ad4d643b2b9fa21e31746a3f4eada8c324bb06bee4111d825cdf913e189f |
memory/1404-9-0x0000000000400000-0x0000000000422000-memory.dmp
C:\Windows\Resources\spoolsv.exe
| MD5 | 3c58f059f6e667fc26ab76f06894cd47 |
| SHA1 | 8d8074bcc60d11b26159b97fe356b7c24e34b7b6 |
| SHA256 | dc783f671d1eacd9a734a6607952f40289bf277ab7fe4c86077de53120a113ce |
| SHA512 | e88aebe3b5d17d6005a52a83aafd89a260b16621034e98cfdcfbe6066963cd5328e3cc17c0d13249ed2514f0e443f55903a589efbb6b4916e0256bf36398a57c |
C:\Windows\Resources\svchost.exe
| MD5 | 0fc7ec30c1dcfe4c4df9e9cdde4c22e9 |
| SHA1 | 6f5d23f4d9e19afaf8dcb74e79026384a392e8dd |
| SHA256 | 8357385cb8ca3bc8d8e8cfe1cf097823ea48a78608aa606e2bd7c5a153e996e9 |
| SHA512 | 300b234370cb116d61246c8b2d6cc705b4826d7d936e377e8c1192f9ec573357d0f8d9fabe3a7f4ad4b8ac4e5858b735268bd06381e6680c87b530f010c71530 |
memory/2388-34-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3096-36-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2788-37-0x0000000000400000-0x0000000000422000-memory.dmp
memory/1404-38-0x0000000000400000-0x0000000000422000-memory.dmp
memory/4964-39-0x0000000000400000-0x0000000000422000-memory.dmp
memory/1404-48-0x0000000000400000-0x0000000000422000-memory.dmp