Analysis
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max time kernel
141s -
max time network
132s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
15-05-2021 13:48
Static task
static1
Behavioral task
behavioral1
Sample
2567d9c8fb7aa7f8e1ee6fa8bc73404722ad2eb34c95e81c8fd34573ef84eaac.dll
Resource
win7v20210410
General
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Target
2567d9c8fb7aa7f8e1ee6fa8bc73404722ad2eb34c95e81c8fd34573ef84eaac.dll
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Size
303KB
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MD5
e19da2b5a1da6a8c80f41262ed73f8ab
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SHA1
e8ec6a231e1765084d28a4c37cde91a8657f9edd
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SHA256
2567d9c8fb7aa7f8e1ee6fa8bc73404722ad2eb34c95e81c8fd34573ef84eaac
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SHA512
bb3aa1e7dd1e807952c58674393fe699b071e6ac4309772e59e213cfeca36ad8e8098f7b57b4c7b2955ad4c6f091003288b316d335eab76a086f8396047e4c3a
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
rundll32Srv.exeDesktopLayer.exepid process 1228 rundll32Srv.exe 1932 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/1228-76-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
rundll32.exerundll32Srv.exepid process 836 rundll32.exe 1228 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\px17C5.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 Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "327883141" 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\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\Main 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\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch 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\IntelliForms iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{EDF77BD1-B5CD-11EB-9816-E6C3A24AEBD3} = "0" 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\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain 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 (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\GPU 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\LowRegistry\DOMStorage 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\Toolbar\WebBrowser 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 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 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
DesktopLayer.exepid process 1932 DesktopLayer.exe 1932 DesktopLayer.exe 1932 DesktopLayer.exe 1932 DesktopLayer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
iexplore.exepid process 1800 iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 1800 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 1800 iexplore.exe 1800 iexplore.exe 608 IEXPLORE.EXE 608 IEXPLORE.EXE 608 IEXPLORE.EXE 608 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 1100 wrote to memory of 836 1100 rundll32.exe rundll32.exe PID 1100 wrote to memory of 836 1100 rundll32.exe rundll32.exe PID 1100 wrote to memory of 836 1100 rundll32.exe rundll32.exe PID 1100 wrote to memory of 836 1100 rundll32.exe rundll32.exe PID 1100 wrote to memory of 836 1100 rundll32.exe rundll32.exe PID 1100 wrote to memory of 836 1100 rundll32.exe rundll32.exe PID 1100 wrote to memory of 836 1100 rundll32.exe rundll32.exe PID 836 wrote to memory of 1228 836 rundll32.exe rundll32Srv.exe PID 836 wrote to memory of 1228 836 rundll32.exe rundll32Srv.exe PID 836 wrote to memory of 1228 836 rundll32.exe rundll32Srv.exe PID 836 wrote to memory of 1228 836 rundll32.exe rundll32Srv.exe PID 1228 wrote to memory of 1932 1228 rundll32Srv.exe DesktopLayer.exe PID 1228 wrote to memory of 1932 1228 rundll32Srv.exe DesktopLayer.exe PID 1228 wrote to memory of 1932 1228 rundll32Srv.exe DesktopLayer.exe PID 1228 wrote to memory of 1932 1228 rundll32Srv.exe DesktopLayer.exe PID 1932 wrote to memory of 1800 1932 DesktopLayer.exe iexplore.exe PID 1932 wrote to memory of 1800 1932 DesktopLayer.exe iexplore.exe PID 1932 wrote to memory of 1800 1932 DesktopLayer.exe iexplore.exe PID 1932 wrote to memory of 1800 1932 DesktopLayer.exe iexplore.exe PID 1800 wrote to memory of 608 1800 iexplore.exe IEXPLORE.EXE PID 1800 wrote to memory of 608 1800 iexplore.exe IEXPLORE.EXE PID 1800 wrote to memory of 608 1800 iexplore.exe IEXPLORE.EXE PID 1800 wrote to memory of 608 1800 iexplore.exe IEXPLORE.EXE
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\2567d9c8fb7aa7f8e1ee6fa8bc73404722ad2eb34c95e81c8fd34573ef84eaac.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\2567d9c8fb7aa7f8e1ee6fa8bc73404722ad2eb34c95e81c8fd34573ef84eaac.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 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:1800 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\GMRYS6AM.txtMD5
df4b49f69604f7278801b623c68fa853
SHA1f38e68d7b907b2ce0db0506b915e233756d6dade
SHA25669eaf06cac73ab6ab2f3b84559a7e305a2176feee8a0c33c9830c52d0ec979cc
SHA5128f86a77e9df7cf206f53cbebf3cf7cf85536adf2a898b3e88ae0564e0e5594b5bcb66c6827d346d86dd9b698067ddf1fd7487d39219e6482d021d82668b3d80c
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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/608-73-0x0000000000000000-mapping.dmp
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memory/836-60-0x00000000757D1000-0x00000000757D3000-memory.dmpFilesize
8KB
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memory/836-59-0x0000000000000000-mapping.dmp
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memory/1228-74-0x00000000001C0000-0x00000000001CF000-memory.dmpFilesize
60KB
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memory/1228-62-0x0000000000000000-mapping.dmp
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memory/1228-76-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/1800-72-0x0000000000000000-mapping.dmp
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memory/1800-79-0x0000000004830000-0x0000000004831000-memory.dmpFilesize
4KB
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memory/1932-71-0x0000000000240000-0x0000000000241000-memory.dmpFilesize
4KB
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memory/1932-67-0x0000000000000000-mapping.dmp