Analysis
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max time kernel
103s -
max time network
143s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
09-05-2021 20:46
Static task
static1
Behavioral task
behavioral1
Sample
7f30a68aa6086df1743a71207b802bb4726c6df553ea685eddfb182f19bfa6a9.dll
Resource
win7v20210408
General
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Target
7f30a68aa6086df1743a71207b802bb4726c6df553ea685eddfb182f19bfa6a9.dll
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Size
99KB
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MD5
cd993f17575cf57ea15d5a1fa7427327
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SHA1
c32aca030e91d9c55ceec93c5f29684629e1b47d
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SHA256
7f30a68aa6086df1743a71207b802bb4726c6df553ea685eddfb182f19bfa6a9
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SHA512
7a118460c11b6eaa36992ef015b2d21780e71a85532f2a575720706e8c1c86385d2a610d57e0d209969f1d0073ab28c6ac9a417261db779db21b07e998eed76b
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
rundll32Srv.exeDesktopLayer.exepid process 1392 rundll32Srv.exe 1996 DesktopLayer.exe -
Processes:
resource yara_rule \Windows\SysWOW64\rundll32Srv.exe upx C:\Windows\SysWOW64\rundll32Srv.exe upx C:\Windows\SysWOW64\rundll32Srv.exe upx behavioral1/memory/1392-67-0x0000000000400000-0x000000000042E000-memory.dmp upx \Program Files (x86)\Microsoft\DesktopLayer.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx -
Loads dropped DLL 2 IoCs
Processes:
rundll32.exerundll32Srv.exepid process 1108 rundll32.exe 1392 rundll32Srv.exe -
Drops file in System32 directory 1 IoCs
Processes:
rundll32.exedescription ioc process File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe -
Drops file in Program Files directory 3 IoCs
Processes:
rundll32Srv.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft\px6DC0.tmp rundll32Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe rundll32Srv.exe -
Processes:
iexplore.exeIEXPLORE.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames 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\Recovery\AdminActive 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\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ 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\LowRegistry\DOMStorage iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "327385628" iexplore.exe 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\PageSetup iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{90090EF1-B147-11EB-AC6C-72DE1B3474B2} = "0" 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\Main 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\IETld\LowMic 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 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\DomainSuggestion 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\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 Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
rundll32.exeDesktopLayer.exepid process 1108 rundll32.exe 1996 DesktopLayer.exe 1996 DesktopLayer.exe 1996 DesktopLayer.exe 1996 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 516 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 516 iexplore.exe 516 iexplore.exe 1620 IEXPLORE.EXE 1620 IEXPLORE.EXE 1620 IEXPLORE.EXE 1620 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 1652 wrote to memory of 1108 1652 rundll32.exe rundll32.exe PID 1652 wrote to memory of 1108 1652 rundll32.exe rundll32.exe PID 1652 wrote to memory of 1108 1652 rundll32.exe rundll32.exe PID 1652 wrote to memory of 1108 1652 rundll32.exe rundll32.exe PID 1652 wrote to memory of 1108 1652 rundll32.exe rundll32.exe PID 1652 wrote to memory of 1108 1652 rundll32.exe rundll32.exe PID 1652 wrote to memory of 1108 1652 rundll32.exe rundll32.exe PID 1108 wrote to memory of 1392 1108 rundll32.exe rundll32Srv.exe PID 1108 wrote to memory of 1392 1108 rundll32.exe rundll32Srv.exe PID 1108 wrote to memory of 1392 1108 rundll32.exe rundll32Srv.exe PID 1108 wrote to memory of 1392 1108 rundll32.exe rundll32Srv.exe PID 1392 wrote to memory of 1996 1392 rundll32Srv.exe DesktopLayer.exe PID 1392 wrote to memory of 1996 1392 rundll32Srv.exe DesktopLayer.exe PID 1392 wrote to memory of 1996 1392 rundll32Srv.exe DesktopLayer.exe PID 1392 wrote to memory of 1996 1392 rundll32Srv.exe DesktopLayer.exe PID 1996 wrote to memory of 516 1996 DesktopLayer.exe iexplore.exe PID 1996 wrote to memory of 516 1996 DesktopLayer.exe iexplore.exe PID 1996 wrote to memory of 516 1996 DesktopLayer.exe iexplore.exe PID 1996 wrote to memory of 516 1996 DesktopLayer.exe iexplore.exe PID 516 wrote to memory of 1620 516 iexplore.exe IEXPLORE.EXE PID 516 wrote to memory of 1620 516 iexplore.exe IEXPLORE.EXE PID 516 wrote to memory of 1620 516 iexplore.exe IEXPLORE.EXE PID 516 wrote to memory of 1620 516 iexplore.exe IEXPLORE.EXE
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\7f30a68aa6086df1743a71207b802bb4726c6df553ea685eddfb182f19bfa6a9.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\7f30a68aa6086df1743a71207b802bb4726c6df553ea685eddfb182f19bfa6a9.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32Srv.exeC:\Windows\SysWOW64\rundll32Srv.exe3⤵
- 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"4⤵
- 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"5⤵
- 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:516 CREDAT:275457 /prefetch:26⤵
- 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.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\AO0PGJ22.txtMD5
f432b195dfd24f3d89b3738fa84b7d51
SHA169e2f9838346f1b1e6d07310da0cfae3ff5bf252
SHA256955b981e9a0e96a59fd2a2a125050ebaca9148355ee6f044ca8d9afb23cb517f
SHA512c46aef210d919fb8349fb677c1a0698ed050c7791dc273e963038e6f51908dc4f60812e306dd5674cd25a2f9e85bfe172e95fb2922c01a39b6191c4319196ae6
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C:\Windows\SysWOW64\rundll32Srv.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Windows\SysWOW64\rundll32Srv.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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\Program Files (x86)\Microsoft\DesktopLayer.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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\Windows\SysWOW64\rundll32Srv.exeMD5
ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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memory/516-74-0x0000000000000000-mapping.dmp
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memory/516-80-0x0000000004CE0000-0x0000000004CE1000-memory.dmpFilesize
4KB
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memory/1108-59-0x0000000000000000-mapping.dmp
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memory/1108-60-0x00000000754F1000-0x00000000754F3000-memory.dmpFilesize
8KB
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memory/1392-66-0x00000000001C0000-0x00000000001CF000-memory.dmpFilesize
60KB
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memory/1392-67-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/1392-62-0x0000000000000000-mapping.dmp
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memory/1620-77-0x0000000000000000-mapping.dmp
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memory/1620-79-0x0000000000D70000-0x0000000000D72000-memory.dmpFilesize
8KB
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memory/1996-69-0x0000000000000000-mapping.dmp
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memory/1996-73-0x0000000000240000-0x0000000000241000-memory.dmpFilesize
4KB