Analysis
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max time kernel
138s -
max time network
138s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
15-05-2021 07:04
Static task
static1
Behavioral task
behavioral1
Sample
3e6e11abbb02ad2c86510a3ad1dff1b49c3f2b657c07103a65538bf69a2a04b7.dll
Resource
win7v20210410
General
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Target
3e6e11abbb02ad2c86510a3ad1dff1b49c3f2b657c07103a65538bf69a2a04b7.dll
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Size
2.6MB
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MD5
4388a2145933b3b0993d650a11aa648d
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SHA1
9d008626e47201eb8c3a8d0e32f9e1620dad7afc
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SHA256
3e6e11abbb02ad2c86510a3ad1dff1b49c3f2b657c07103a65538bf69a2a04b7
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SHA512
84bddee09629faf703c655088f191e11aa8784ceae0b74af55ffc0889f73c6b5aeb68e637496aa233840e683ce24881a4f459b11d6036839ac2bcf09e5c4f460
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
rundll32Srv.exeDesktopLayer.exepid process 1968 rundll32Srv.exe 1888 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/1968-75-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
rundll32.exerundll32Srv.exepid process 2036 rundll32.exe 1968 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\px426.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 1068 2036 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\GPU 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 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\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery 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\LowRegistry 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\PageSetup 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\Recovery\AdminActive 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\DomainSuggestion 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\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{6808ABB1-B587-11EB-BF60-7A40C1B3078F} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch 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 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\BrowserEmulation\LowMic 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\Toolbar 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 Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "327852851" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
DesktopLayer.exeWerFault.exepid process 1888 DesktopLayer.exe 1888 DesktopLayer.exe 1888 DesktopLayer.exe 1888 DesktopLayer.exe 1068 WerFault.exe 1068 WerFault.exe 1068 WerFault.exe 1068 WerFault.exe 1068 WerFault.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
WerFault.exepid process 1068 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
WerFault.exedescription pid process Token: SeDebugPrivilege 1068 WerFault.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 1744 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 1744 iexplore.exe 1744 iexplore.exe 1080 IEXPLORE.EXE 1080 IEXPLORE.EXE 1080 IEXPLORE.EXE 1080 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 2000 wrote to memory of 2036 2000 rundll32.exe rundll32.exe PID 2000 wrote to memory of 2036 2000 rundll32.exe rundll32.exe PID 2000 wrote to memory of 2036 2000 rundll32.exe rundll32.exe PID 2000 wrote to memory of 2036 2000 rundll32.exe rundll32.exe PID 2000 wrote to memory of 2036 2000 rundll32.exe rundll32.exe PID 2000 wrote to memory of 2036 2000 rundll32.exe rundll32.exe PID 2000 wrote to memory of 2036 2000 rundll32.exe rundll32.exe PID 2036 wrote to memory of 1968 2036 rundll32.exe rundll32Srv.exe PID 2036 wrote to memory of 1968 2036 rundll32.exe rundll32Srv.exe PID 2036 wrote to memory of 1968 2036 rundll32.exe rundll32Srv.exe PID 2036 wrote to memory of 1968 2036 rundll32.exe rundll32Srv.exe PID 1968 wrote to memory of 1888 1968 rundll32Srv.exe DesktopLayer.exe PID 1968 wrote to memory of 1888 1968 rundll32Srv.exe DesktopLayer.exe PID 1968 wrote to memory of 1888 1968 rundll32Srv.exe DesktopLayer.exe PID 1968 wrote to memory of 1888 1968 rundll32Srv.exe DesktopLayer.exe PID 1888 wrote to memory of 1744 1888 DesktopLayer.exe iexplore.exe PID 1888 wrote to memory of 1744 1888 DesktopLayer.exe iexplore.exe PID 1888 wrote to memory of 1744 1888 DesktopLayer.exe iexplore.exe PID 1888 wrote to memory of 1744 1888 DesktopLayer.exe iexplore.exe PID 1744 wrote to memory of 1080 1744 iexplore.exe IEXPLORE.EXE PID 1744 wrote to memory of 1080 1744 iexplore.exe IEXPLORE.EXE PID 1744 wrote to memory of 1080 1744 iexplore.exe IEXPLORE.EXE PID 1744 wrote to memory of 1080 1744 iexplore.exe IEXPLORE.EXE PID 2036 wrote to memory of 1068 2036 rundll32.exe WerFault.exe PID 2036 wrote to memory of 1068 2036 rundll32.exe WerFault.exe PID 2036 wrote to memory of 1068 2036 rundll32.exe WerFault.exe PID 2036 wrote to memory of 1068 2036 rundll32.exe WerFault.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3e6e11abbb02ad2c86510a3ad1dff1b49c3f2b657c07103a65538bf69a2a04b7.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\3e6e11abbb02ad2c86510a3ad1dff1b49c3f2b657c07103a65538bf69a2a04b7.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:1744 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 2036 -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\STC9B7Q7.txtMD5
2ff2d6d41d152c5bf54c5955a9c25ce9
SHA159df818a0b4245c0432b77608b7e8ae730441e85
SHA2569d21298bde0efea787644159cc82b788e5671102a6a2f37eadccc16f5f7619c2
SHA5129d1e885b6a17c51e9430244ae305d383891311c05b9be9eb4126936b88810ecfe10d85b7735b7f00ec85cb1d4ee9cfc6bef3be45ca2dd6ea58e91ba7d2bd13b2
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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/1068-80-0x00000000007B0000-0x00000000007B1000-memory.dmpFilesize
4KB
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memory/1068-79-0x0000000000000000-mapping.dmp
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memory/1080-73-0x0000000000000000-mapping.dmp
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memory/1744-78-0x0000000003E20000-0x0000000003E21000-memory.dmpFilesize
4KB
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memory/1744-72-0x0000000000000000-mapping.dmp
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memory/1888-67-0x0000000000000000-mapping.dmp
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memory/1888-71-0x0000000000250000-0x0000000000251000-memory.dmpFilesize
4KB
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memory/1968-74-0x0000000000230000-0x000000000023F000-memory.dmpFilesize
60KB
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memory/1968-75-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/1968-62-0x0000000000000000-mapping.dmp
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memory/2036-59-0x0000000000000000-mapping.dmp
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memory/2036-60-0x00000000765F1000-0x00000000765F3000-memory.dmpFilesize
8KB