Overview
overview
10Static
static
yymshdsdsd...Fx.dll
windows7-x64
1yymshdsdsd...Fx.dll
windows10-2004-x64
1yymshdsdsd...er.dll
windows7-x64
10yymshdsdsd...er.dll
windows10-2004-x64
10yymshdsdsd...??.exe
windows7-x64
10yymshdsdsd...??.exe
windows10-2004-x64
10yymshdsdsd...jd.dll
windows7-x64
10yymshdsdsd...jd.dll
windows10-2004-x64
10yymshdsdsd...sa.dll
windows7-x64
1yymshdsdsd...sa.dll
windows10-2004-x64
1yymshdsdsd...dc.dll
windows7-x64
1yymshdsdsd...dc.dll
windows10-2004-x64
3Analysis
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max time kernel
105s -
max time network
145s -
platform
windows7_x64 -
resource
win7-20220718-en -
resource tags
arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system -
submitted
18-07-2022 18:19
Static task
static1
Behavioral task
behavioral1
Sample
yymshdsdsdrj_gr/FluorineFx.dll
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
yymshdsdsdrj_gr/FluorineFx.dll
Resource
win10v2004-20220414-en
Behavioral task
behavioral3
Sample
yymshdsdsdrj_gr/Net7Cracker.dll
Resource
win7-20220718-en
Behavioral task
behavioral4
Sample
yymshdsdsdrj_gr/Net7Cracker.dll
Resource
win10v2004-20220414-en
Behavioral task
behavioral5
Sample
yymshdsdsdrj_gr/YY???????.exe
Resource
win7-20220718-en
Behavioral task
behavioral6
Sample
yymshdsdsdrj_gr/YY???????.exe
Resource
win10v2004-20220718-en
Behavioral task
behavioral7
Sample
yymshdsdsdrj_gr/pljd.dll
Resource
win7-20220715-en
Behavioral task
behavioral8
Sample
yymshdsdsdrj_gr/pljd.dll
Resource
win10v2004-20220718-en
Behavioral task
behavioral9
Sample
yymshdsdsdrj_gr/rsa.dll
Resource
win7-20220715-en
Behavioral task
behavioral10
Sample
yymshdsdsdrj_gr/rsa.dll
Resource
win10v2004-20220414-en
Behavioral task
behavioral11
Sample
yymshdsdsdrj_gr/udc.dll
Resource
win7-20220718-en
Behavioral task
behavioral12
Sample
yymshdsdsdrj_gr/udc.dll
Resource
win10v2004-20220414-en
General
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Target
yymshdsdsdrj_gr/YY???????.exe
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Size
9.7MB
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MD5
6647a0caa20a9d457ae70b4c6bab01b4
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SHA1
13c43500fdbc60412b564f38eab047ab8a2dd544
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SHA256
26bd4b545a1433ca69139d0e5362199d4feeece93146f4f4922d35a4feda833d
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SHA512
2850d155b481783a9b18167a758a1baec5d773f2ce160045d1bc9d04d748efe5d9f7940a5a6b608f6317f49e0fbc3bcfa8adb60697b29da5335e700790aa10f4
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
YY_______Srv.exeDesktopLayer.exepid process 1996 YY_______Srv.exe 980 DesktopLayer.exe -
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______Srv.exe upx C:\Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______Srv.exe upx C:\Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______Srv.exe upx \Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral5/memory/1996-63-0x0000000000400000-0x000000000042E000-memory.dmp upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx C:\Program Files (x86)\Microsoft\DesktopLayer.exe upx behavioral5/memory/980-67-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
Processes:
YY_______.exeYY_______Srv.exepid process 960 YY_______.exe 1996 YY_______Srv.exe -
Drops file in Program Files directory 3 IoCs
Processes:
YY_______Srv.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft\px3267.tmp YY_______Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe YY_______Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe YY_______Srv.exe -
Processes:
IEXPLORE.EXEiexplore.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "364941128" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{451758F1-06D8-11ED-8505-7E520ABC4E36} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3762437355-3468409815-1164039494-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
DesktopLayer.exepid process 980 DesktopLayer.exe 980 DesktopLayer.exe 980 DesktopLayer.exe 980 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
iexplore.exepid process 1432 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
iexplore.exeIEXPLORE.EXEpid process 1432 iexplore.exe 1432 iexplore.exe 560 IEXPLORE.EXE 560 IEXPLORE.EXE 560 IEXPLORE.EXE 560 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
YY_______.exeYY_______Srv.exeDesktopLayer.exeiexplore.exedescription pid process target process PID 960 wrote to memory of 1996 960 YY_______.exe YY_______Srv.exe PID 960 wrote to memory of 1996 960 YY_______.exe YY_______Srv.exe PID 960 wrote to memory of 1996 960 YY_______.exe YY_______Srv.exe PID 960 wrote to memory of 1996 960 YY_______.exe YY_______Srv.exe PID 1996 wrote to memory of 980 1996 YY_______Srv.exe DesktopLayer.exe PID 1996 wrote to memory of 980 1996 YY_______Srv.exe DesktopLayer.exe PID 1996 wrote to memory of 980 1996 YY_______Srv.exe DesktopLayer.exe PID 1996 wrote to memory of 980 1996 YY_______Srv.exe DesktopLayer.exe PID 980 wrote to memory of 1432 980 DesktopLayer.exe iexplore.exe PID 980 wrote to memory of 1432 980 DesktopLayer.exe iexplore.exe PID 980 wrote to memory of 1432 980 DesktopLayer.exe iexplore.exe PID 980 wrote to memory of 1432 980 DesktopLayer.exe iexplore.exe PID 1432 wrote to memory of 560 1432 iexplore.exe IEXPLORE.EXE PID 1432 wrote to memory of 560 1432 iexplore.exe IEXPLORE.EXE PID 1432 wrote to memory of 560 1432 iexplore.exe IEXPLORE.EXE PID 1432 wrote to memory of 560 1432 iexplore.exe IEXPLORE.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______.exe"C:\Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______Srv.exeC:\Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______Srv.exe2⤵
- 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"3⤵
- 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"4⤵
- 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:1432 CREDAT:275457 /prefetch:25⤵
- 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.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\5LN9V4A8.txtFilesize
599B
MD554286c77011a7fb1fc0cd7bc6a4f72d9
SHA11c0723a53ea1163c42b20a58a61b9e0a1c496ad2
SHA2566e8556aa7da29e2913a33b5182bfc2b6a219ace99272a10dfed70a4d6ab8967b
SHA512de64802084d3e86b76a3571ab44f6ccdb585b97820f3caa2bbf1c09491c5838357b373ba0b2b016280f84495cc32d5d07af19e3e7a7a449d2d3be8b279b563ae
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\Program Files (x86)\Microsoft\DesktopLayer.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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\Users\Admin\AppData\Local\Temp\yymshdsdsdrj_gr\YY_______Srv.exeFilesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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memory/960-69-0x00000000004E0000-0x000000000050E000-memory.dmpFilesize
184KB
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memory/960-54-0x0000000001200000-0x0000000001BBA000-memory.dmpFilesize
9.7MB
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memory/960-68-0x0000000060000000-0x00000000600AA000-memory.dmpFilesize
680KB
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memory/980-62-0x0000000000000000-mapping.dmp
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memory/980-67-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/1996-63-0x0000000000400000-0x000000000042E000-memory.dmpFilesize
184KB
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memory/1996-59-0x0000000076091000-0x0000000076093000-memory.dmpFilesize
8KB
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memory/1996-56-0x0000000000000000-mapping.dmp