Analysis
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max time kernel
99s -
max time network
139s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
15-05-2021 14:02
Static task
static1
Behavioral task
behavioral1
Sample
a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exe
Resource
win7v20210408
General
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Target
a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exe
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Size
149KB
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MD5
c4c41774da7a3159303357633436a14c
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SHA1
7ba8859d5753323b334b56af0e57a2a7abad6fef
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SHA256
a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e
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SHA512
cdabc106e973646affad22e11609aae6344789c29822f32112afb13c4b98aa3fdcdf3f16f86f86ffbb377b1a78677035109fd66200c14842c625149135621cb1
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exeDesktopLayer.exepid process 2040 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe 1724 DesktopLayer.exe -
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe upx C:\Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe upx C:\Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe upx \Program Files (x86)\Microsoft\DesktopLayer.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral1/memory/2040-74-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exea1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exepid process 1260 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exe 2040 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe -
Drops file in Program Files directory 3 IoCs
Processes:
a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft\px1362.tmp a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe -
Processes:
iexplore.exeIEXPLORE.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{895E7971-B5E1-11EB-AC20-62C8A5B8B9AA} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "327288480" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
DesktopLayer.exepid process 1724 DesktopLayer.exe 1724 DesktopLayer.exe 1724 DesktopLayer.exe 1724 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 1684 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 1684 iexplore.exe 1684 iexplore.exe 1084 IEXPLORE.EXE 1084 IEXPLORE.EXE 1084 IEXPLORE.EXE 1084 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exea1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 1260 wrote to memory of 2040 1260 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exe a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe PID 1260 wrote to memory of 2040 1260 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exe a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe PID 1260 wrote to memory of 2040 1260 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exe a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe PID 1260 wrote to memory of 2040 1260 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exe a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe PID 2040 wrote to memory of 1724 2040 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe DesktopLayer.exe PID 2040 wrote to memory of 1724 2040 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe DesktopLayer.exe PID 2040 wrote to memory of 1724 2040 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe DesktopLayer.exe PID 2040 wrote to memory of 1724 2040 a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe DesktopLayer.exe PID 1724 wrote to memory of 1684 1724 DesktopLayer.exe iexplore.exe PID 1724 wrote to memory of 1684 1724 DesktopLayer.exe iexplore.exe PID 1724 wrote to memory of 1684 1724 DesktopLayer.exe iexplore.exe PID 1724 wrote to memory of 1684 1724 DesktopLayer.exe iexplore.exe PID 1684 wrote to memory of 1084 1684 iexplore.exe IEXPLORE.EXE PID 1684 wrote to memory of 1084 1684 iexplore.exe IEXPLORE.EXE PID 1684 wrote to memory of 1084 1684 iexplore.exe IEXPLORE.EXE PID 1684 wrote to memory of 1084 1684 iexplore.exe IEXPLORE.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exe"C:\Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0e.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1260 -
C:\Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exeC:\Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2040 -
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
PID:1724 -
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
PID:1684 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1684 CREDAT:275457 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1084
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeMD5
da18881ccaefeaa4942af9291cb34826
SHA1e4f33c21684bede05ccea60dd0767250ff2b3aba
SHA2561d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842
SHA5122420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeMD5
da18881ccaefeaa4942af9291cb34826
SHA1e4f33c21684bede05ccea60dd0767250ff2b3aba
SHA2561d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842
SHA5122420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901
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C:\Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exeMD5
da18881ccaefeaa4942af9291cb34826
SHA1e4f33c21684bede05ccea60dd0767250ff2b3aba
SHA2561d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842
SHA5122420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901
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C:\Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exeMD5
da18881ccaefeaa4942af9291cb34826
SHA1e4f33c21684bede05ccea60dd0767250ff2b3aba
SHA2561d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842
SHA5122420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901
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\Program Files (x86)\Microsoft\DesktopLayer.exeMD5
da18881ccaefeaa4942af9291cb34826
SHA1e4f33c21684bede05ccea60dd0767250ff2b3aba
SHA2561d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842
SHA5122420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901
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\Users\Admin\AppData\Local\Temp\a1a91e9f2f404225bdaeca436758ed79a4aca1b88bf77d9e9ecdb0a0abc3ed0eSrv.exeMD5
da18881ccaefeaa4942af9291cb34826
SHA1e4f33c21684bede05ccea60dd0767250ff2b3aba
SHA2561d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842
SHA5122420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901
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memory/1084-78-0x0000000000000000-mapping.dmp
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memory/1260-60-0x0000000075B31000-0x0000000075B33000-memory.dmpFilesize
8KB
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memory/1260-75-0x00000000001B0000-0x00000000001DE000-memory.dmpFilesize
184KB
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memory/1684-72-0x0000000000000000-mapping.dmp
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memory/1684-79-0x00000000037A0000-0x00000000037A1000-memory.dmpFilesize
4KB
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memory/1724-67-0x0000000000000000-mapping.dmp
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memory/1724-71-0x0000000000240000-0x0000000000241000-memory.dmpFilesize
4KB
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memory/2040-62-0x0000000000000000-mapping.dmp
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memory/2040-74-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/2040-73-0x0000000000230000-0x000000000023F000-memory.dmpFilesize
60KB