Analysis
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max time kernel
121s -
max time network
136s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
15-05-2021 11:21
Static task
static1
Behavioral task
behavioral1
Sample
d22de621104e1930334ed632bd2d709c75bb38d4c494d88bb4d13e6733a06ebd.dll
Resource
win7v20210410
General
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Target
d22de621104e1930334ed632bd2d709c75bb38d4c494d88bb4d13e6733a06ebd.dll
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Size
2.6MB
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MD5
b324562173dd617665b9f1fc9c2be4a5
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SHA1
349cd63551de5944297d038e64d25125d15e958d
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SHA256
d22de621104e1930334ed632bd2d709c75bb38d4c494d88bb4d13e6733a06ebd
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SHA512
7785553b24f1edc1fb52cd5444b22c5072dffb83c664ed52682accd99a4b760e81c2e900d26d92f7c7b00b7f3ba19f14b6fec9f49cfa2b97405e69517864b0cf
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
rundll32Srv.exeDesktopLayer.exepid process 1988 rundll32Srv.exe 1796 DesktopLayer.exe -
Processes:
resource yara_rule \Windows\SysWOW64\rundll32Srv.exe upx C:\Windows\SysWOW64\rundll32Srv.exe upx C:\Windows\SysWOW64\rundll32Srv.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/1988-77-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
rundll32.exerundll32Srv.exepid process 1672 rundll32.exe 1988 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\px141D.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 -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 308 1672 WerFault.exe rundll32.exe -
Processes:
iexplore.exeIEXPLORE.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "327864938" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{8C573101-B5A3-11EB-849A-C2EBB310CB62} = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
DesktopLayer.exeWerFault.exepid process 1796 DesktopLayer.exe 1796 DesktopLayer.exe 1796 DesktopLayer.exe 1796 DesktopLayer.exe 308 WerFault.exe 308 WerFault.exe 308 WerFault.exe 308 WerFault.exe 308 WerFault.exe 308 WerFault.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
WerFault.exepid process 308 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
WerFault.exedescription pid process Token: SeDebugPrivilege 308 WerFault.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 1788 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 1788 iexplore.exe 1788 iexplore.exe 1432 IEXPLORE.EXE 1432 IEXPLORE.EXE 1432 IEXPLORE.EXE 1432 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 1756 wrote to memory of 1672 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 1672 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 1672 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 1672 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 1672 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 1672 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 1672 1756 rundll32.exe rundll32.exe PID 1672 wrote to memory of 1988 1672 rundll32.exe rundll32Srv.exe PID 1672 wrote to memory of 1988 1672 rundll32.exe rundll32Srv.exe PID 1672 wrote to memory of 1988 1672 rundll32.exe rundll32Srv.exe PID 1672 wrote to memory of 1988 1672 rundll32.exe rundll32Srv.exe PID 1988 wrote to memory of 1796 1988 rundll32Srv.exe DesktopLayer.exe PID 1988 wrote to memory of 1796 1988 rundll32Srv.exe DesktopLayer.exe PID 1988 wrote to memory of 1796 1988 rundll32Srv.exe DesktopLayer.exe PID 1988 wrote to memory of 1796 1988 rundll32Srv.exe DesktopLayer.exe PID 1796 wrote to memory of 1788 1796 DesktopLayer.exe iexplore.exe PID 1796 wrote to memory of 1788 1796 DesktopLayer.exe iexplore.exe PID 1796 wrote to memory of 1788 1796 DesktopLayer.exe iexplore.exe PID 1796 wrote to memory of 1788 1796 DesktopLayer.exe iexplore.exe PID 1788 wrote to memory of 1432 1788 iexplore.exe IEXPLORE.EXE PID 1788 wrote to memory of 1432 1788 iexplore.exe IEXPLORE.EXE PID 1788 wrote to memory of 1432 1788 iexplore.exe IEXPLORE.EXE PID 1788 wrote to memory of 1432 1788 iexplore.exe IEXPLORE.EXE PID 1672 wrote to memory of 308 1672 rundll32.exe WerFault.exe PID 1672 wrote to memory of 308 1672 rundll32.exe WerFault.exe PID 1672 wrote to memory of 308 1672 rundll32.exe WerFault.exe PID 1672 wrote to memory of 308 1672 rundll32.exe WerFault.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\d22de621104e1930334ed632bd2d709c75bb38d4c494d88bb4d13e6733a06ebd.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\d22de621104e1930334ed632bd2d709c75bb38d4c494d88bb4d13e6733a06ebd.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- 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:1788 CREDAT:275457 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1672 -s 2763⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
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\7I0M8CXU.txtMD5
4774a6fde66122c8cb0e0b6463b04788
SHA16de0b154c28c838a3b60c3072ffa63d8d4d56a72
SHA2560d31bd5d48228334a7303ed63685c4208415f09414b0ef61024c9f63255ab2c8
SHA512b013865b6d5d9cd0e97a72600b98ec02f54216d31fd3a209cb740e9a6dbea9552a4cff8b3a13058995e63fb74404b69c6311c7f67c8027dee4422479cd041804
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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/308-83-0x0000000000480000-0x0000000000481000-memory.dmpFilesize
4KB
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memory/308-82-0x0000000000000000-mapping.dmp
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memory/1432-80-0x0000000001FF0000-0x0000000001FF2000-memory.dmpFilesize
8KB
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memory/1432-74-0x0000000000000000-mapping.dmp
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memory/1672-60-0x0000000000000000-mapping.dmp
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memory/1672-61-0x0000000075FE1000-0x0000000075FE3000-memory.dmpFilesize
8KB
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memory/1788-73-0x0000000000000000-mapping.dmp
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memory/1788-81-0x0000000005200000-0x0000000005201000-memory.dmpFilesize
4KB
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memory/1796-72-0x0000000000240000-0x0000000000241000-memory.dmpFilesize
4KB
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memory/1796-68-0x0000000000000000-mapping.dmp
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memory/1988-76-0x0000000000230000-0x000000000023F000-memory.dmpFilesize
60KB
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memory/1988-77-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/1988-63-0x0000000000000000-mapping.dmp