Analysis
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max time kernel
91s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-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 4880 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe 1968 DesktopLayer.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe upx C:\Users\Admin\AppData\Local\Temp\c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral2/memory/4880-137-0x0000000000400000-0x000000000042E000-memory.dmp upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral2/memory/1968-138-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
Processes:
c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft\px9FA0.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 Set value (str) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30970560" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30970560" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "364045991" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{226CC188-FEB4-11EC-AD90-5ABF78284711} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4140770690" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30970560" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "4140770690" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4148427857" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DesktopLayer.exepid process 1968 DesktopLayer.exe 1968 DesktopLayer.exe 1968 DesktopLayer.exe 1968 DesktopLayer.exe 1968 DesktopLayer.exe 1968 DesktopLayer.exe 1968 DesktopLayer.exe 1968 DesktopLayer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
iexplore.exepid process 3000 iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 3000 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 3000 iexplore.exe 3000 iexplore.exe 2220 IEXPLORE.EXE 2220 IEXPLORE.EXE 2220 IEXPLORE.EXE 2220 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exec3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 4352 wrote to memory of 4880 4352 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe PID 4352 wrote to memory of 4880 4352 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe PID 4352 wrote to memory of 4880 4352 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94.exe c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe PID 4880 wrote to memory of 1968 4880 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe DesktopLayer.exe PID 4880 wrote to memory of 1968 4880 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe DesktopLayer.exe PID 4880 wrote to memory of 1968 4880 c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94Srv.exe DesktopLayer.exe PID 1968 wrote to memory of 3000 1968 DesktopLayer.exe iexplore.exe PID 1968 wrote to memory of 3000 1968 DesktopLayer.exe iexplore.exe PID 3000 wrote to memory of 2220 3000 iexplore.exe IEXPLORE.EXE PID 3000 wrote to memory of 2220 3000 iexplore.exe IEXPLORE.EXE PID 3000 wrote to memory of 2220 3000 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⤵
- 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
- 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 behavior: GetForegroundWindowSpam
- 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:3000 CREDAT:17410 /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\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776Filesize
471B
MD5792d1cce1523ee29fa8eac86e4ad0b5d
SHA1dbea5ff511dc06e72abc982c287a831385ecaf54
SHA256a852ffad56b7ca65729a0311c4056024f5e6becbae353a4cf83a560cecd7399d
SHA512199cde64a2cf0064a8786cd1fb544f225dd42b90b78013e97b238daebe8e641e716be51ae8840fd6def08d50242abdb68732e126160cc66d9bb7a0e4e3386631
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776Filesize
404B
MD54956ead7467970405cbc67ca5519d44f
SHA1b254a02973271057b0ea14e5d4eeed918d88cf48
SHA256398c529e6d384ae878c3666b1f581bc73f6d5285e38bd8b9f7312953747c1a36
SHA51217fbfe1db9b5566010bc488de29d7fc0cb10e088154a446c5b26b3a425ec667191035b40e1640f8117603de9975180681bfe638bc50ea6a7863b382ac16326db
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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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memory/1968-134-0x0000000000000000-mapping.dmp
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memory/1968-138-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/4352-130-0x00000000007E0000-0x000000000084F000-memory.dmpFilesize
444KB
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memory/4352-139-0x00000000007E0000-0x000000000084F000-memory.dmpFilesize
444KB
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memory/4880-131-0x0000000000000000-mapping.dmp
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memory/4880-137-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB