Analysis
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max time kernel
104s -
max time network
146s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
08-07-2022 06:10
Static task
static1
Behavioral task
behavioral1
Sample
c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe
Resource
win7-20220414-en
General
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Target
c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe
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Size
343KB
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MD5
61719f5c7a2b004e5eeeb736432259cc
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SHA1
ed6c92d8888d90b881f503129059eab6afadaae2
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SHA256
c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94
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SHA512
68b2947708523005c29e2d8cf9614f78ae39dd745acd15d0279bc6193dd20cc1051956dcd4660eeac843cadef1ece30ae1af576de9da2503cb9730f2bdda66ee
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exeDesktopLayer.exepid process 2044 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe 1996 DesktopLayer.exe -
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe upx C:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe upx C:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe upx \Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral1/memory/2044-65-0x0000000000400000-0x000000000042E000-memory.dmp upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral1/memory/1996-67-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exec3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exepid process 604 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe 2044 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe -
Drops file in Program Files directory 3 IoCs
Processes:
c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft\px417.tmp c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Processes:
iexplore.exeIEXPLORE.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{192C3A21-FEB4-11EC-9F69-DEAEF166B17F} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "364045983" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
DesktopLayer.exepid process 1996 DesktopLayer.exe 1996 DesktopLayer.exe 1996 DesktopLayer.exe 1996 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 2020 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 2020 iexplore.exe 2020 iexplore.exe 756 IEXPLORE.EXE 756 IEXPLORE.EXE 756 IEXPLORE.EXE 756 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exec3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 604 wrote to memory of 2044 604 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe PID 604 wrote to memory of 2044 604 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe PID 604 wrote to memory of 2044 604 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe PID 604 wrote to memory of 2044 604 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe PID 2044 wrote to memory of 1996 2044 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe DesktopLayer.exe PID 2044 wrote to memory of 1996 2044 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe DesktopLayer.exe PID 2044 wrote to memory of 1996 2044 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe DesktopLayer.exe PID 2044 wrote to memory of 1996 2044 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe DesktopLayer.exe PID 1996 wrote to memory of 2020 1996 DesktopLayer.exe iexplore.exe PID 1996 wrote to memory of 2020 1996 DesktopLayer.exe iexplore.exe PID 1996 wrote to memory of 2020 1996 DesktopLayer.exe iexplore.exe PID 1996 wrote to memory of 2020 1996 DesktopLayer.exe iexplore.exe PID 2020 wrote to memory of 756 2020 iexplore.exe IEXPLORE.EXE PID 2020 wrote to memory of 756 2020 iexplore.exe IEXPLORE.EXE PID 2020 wrote to memory of 756 2020 iexplore.exe IEXPLORE.EXE PID 2020 wrote to memory of 756 2020 iexplore.exe IEXPLORE.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe"C:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exeC:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2020 CREDAT:275457 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\WBG70PP9.txtFilesize
600B
MD5145791a6f40bc0591fb1a5ac94079e03
SHA1fe3cad9ae0e3476555ec8ba3c38378edac97e530
SHA256c749010a840c6a800a723c1d3e8df846f935ea4ad3ad6520df490715f49cc18b
SHA512f4d6a23f0e9b45345e966ca28328de904b9390c9ee75a5b4283e4dd624c527de9ba07802d56acbf4850b3ef069da84d046113e4fd8ef35d480c06459ee02a6bd
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\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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memory/604-54-0x00000000757C1000-0x00000000757C3000-memory.dmpFilesize
8KB
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memory/604-62-0x0000000000050000-0x00000000000BF000-memory.dmpFilesize
444KB
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memory/1996-61-0x0000000000000000-mapping.dmp
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memory/1996-67-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/2044-65-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/2044-56-0x0000000000000000-mapping.dmp