Analysis
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max time kernel
147s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
23-11-2022 21:23
Static task
static1
Behavioral task
behavioral1
Sample
f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe
Resource
win7-20221111-en
General
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Target
f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe
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Size
7.3MB
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MD5
4c01eb8723a697aee9eb801463441c1d
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SHA1
f703d06fbd82a405c7789834639e4392a32b434b
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SHA256
f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3
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SHA512
ada5081a3ca6ba0b24acbe5c183e83ea916f8887e9e87ff70920a891564c95da0cacff21e4945b6f31db1abf97077a341e788b5ea7282db372763b794e21caed
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SSDEEP
196608:MvGQvnZ3pZ7V54Zzlzaq1UsK9Mdx0TQFNkleF:MvFvxrZGJlzzmTe/0TQzzF
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exeDesktopLayer.exepid process 3408 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe 3792 DesktopLayer.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe upx C:\Users\Admin\AppData\Local\Temp\f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral2/memory/3408-140-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/memory/3792-142-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 4 IoCs
Processes:
f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exepid process 4532 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe 4532 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe 4532 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe 4532 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe -
Drops file in Program Files directory 3 IoCs
Processes:
f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft\px7E8B.tmp f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.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 (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "74712266" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "74712266" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30998436" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30998436" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "376018206" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{0C0DF6B2-6B97-11ED-B696-5ECC372795C7} = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
DesktopLayer.exepid process 3792 DesktopLayer.exe 3792 DesktopLayer.exe 3792 DesktopLayer.exe 3792 DesktopLayer.exe 3792 DesktopLayer.exe 3792 DesktopLayer.exe 3792 DesktopLayer.exe 3792 DesktopLayer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
iexplore.exepid process 1312 iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 1312 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 1312 iexplore.exe 1312 iexplore.exe 1656 IEXPLORE.EXE 1656 IEXPLORE.EXE 1656 IEXPLORE.EXE 1656 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exef89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 4532 wrote to memory of 3408 4532 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe PID 4532 wrote to memory of 3408 4532 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe PID 4532 wrote to memory of 3408 4532 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe PID 3408 wrote to memory of 3792 3408 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe DesktopLayer.exe PID 3408 wrote to memory of 3792 3408 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe DesktopLayer.exe PID 3408 wrote to memory of 3792 3408 f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exe DesktopLayer.exe PID 3792 wrote to memory of 1312 3792 DesktopLayer.exe iexplore.exe PID 3792 wrote to memory of 1312 3792 DesktopLayer.exe iexplore.exe PID 1312 wrote to memory of 1656 1312 iexplore.exe IEXPLORE.EXE PID 1312 wrote to memory of 1656 1312 iexplore.exe IEXPLORE.EXE PID 1312 wrote to memory of 1656 1312 iexplore.exe IEXPLORE.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe"C:\Users\Admin\AppData\Local\Temp\f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exeC:\Users\Admin\AppData\Local\Temp\f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.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:1312 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\Local\Temp\f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\f89955a5c1279101abf6a1e4d1d27c65993986cb980764d948a39150fcb8dcb3Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\nsq7E0F.tmp\ButtonLinker.dllFilesize
7KB
MD5dd85ac7d85c92dd0e3cc17dfd4890f54
SHA1a128fb7a05965c1a9913c6f5e419e6c4c0a7d2fa
SHA25627abd2a4fb1bf66add60221b52d061bbe24d2d21e13600725ff7a5c6c777b504
SHA512e4ff8216c65110a9d156f37c2062acb53a72daa8af12dfc24278920d9e1a4083a81b1446759df75405b2da34c7bfb1afc33184feedd0aee4ed73f79fcbb1a8a1
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C:\Users\Admin\AppData\Local\Temp\nsq7E0F.tmp\ButtonLinker.dllFilesize
7KB
MD5dd85ac7d85c92dd0e3cc17dfd4890f54
SHA1a128fb7a05965c1a9913c6f5e419e6c4c0a7d2fa
SHA25627abd2a4fb1bf66add60221b52d061bbe24d2d21e13600725ff7a5c6c777b504
SHA512e4ff8216c65110a9d156f37c2062acb53a72daa8af12dfc24278920d9e1a4083a81b1446759df75405b2da34c7bfb1afc33184feedd0aee4ed73f79fcbb1a8a1
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C:\Users\Admin\AppData\Local\Temp\nsq7E0F.tmp\System.dllFilesize
67KB
MD58fef2ddc02a88527acf5f875aa79590a
SHA1b3ebe53a0037789c155992eee0547de1a76712b9
SHA2565b06944f0b948937d87a68d0d584f8de8f169298f5db95336f55696079e88d50
SHA5127f231356313b7aa4882bfd205529d65022397c91a5aab3658d655524aa3bfe855432ac35cd455f8750530e1b9582e71c710abb94d610ff1ec3e13d5a193d19de
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C:\Users\Admin\AppData\Local\Temp\nsq7E0F.tmp\System.dllFilesize
67KB
MD58fef2ddc02a88527acf5f875aa79590a
SHA1b3ebe53a0037789c155992eee0547de1a76712b9
SHA2565b06944f0b948937d87a68d0d584f8de8f169298f5db95336f55696079e88d50
SHA5127f231356313b7aa4882bfd205529d65022397c91a5aab3658d655524aa3bfe855432ac35cd455f8750530e1b9582e71c710abb94d610ff1ec3e13d5a193d19de
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memory/3408-140-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/3408-134-0x0000000000000000-mapping.dmp
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memory/3792-138-0x0000000000000000-mapping.dmp
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memory/3792-142-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/4532-133-0x0000000010000000-0x0000000010015000-memory.dmpFilesize
84KB
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memory/4532-145-0x0000000010000000-0x0000000010015000-memory.dmpFilesize
84KB