Analysis
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max time kernel
74s -
max time network
143s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
21/11/2022, 10:33
Static task
static1
Behavioral task
behavioral1
Sample
aa726d77e30a4b87adce624179f77ae433993ab15c33d97cf4bf47577beec2db.dll
Resource
win7-20220812-en
General
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Target
aa726d77e30a4b87adce624179f77ae433993ab15c33d97cf4bf47577beec2db.dll
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Size
400KB
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MD5
1121990fdb732ab2a4b1724948fe5890
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SHA1
b33efbeb3ff0c8e6e72cbd5c0e737ab184efe1c7
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SHA256
aa726d77e30a4b87adce624179f77ae433993ab15c33d97cf4bf47577beec2db
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SHA512
4bd70553a4e3f8c9b87f673c0630831fa812d2e05cd62850e281ffd6b2d6dda7ae494baab482ef2c5a551b5a2649c3bf02f5bded9e282763df825b124855e66e
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SSDEEP
6144:IcV9z83OtqxnEYmt3NEnvfF+Tbmbw6An8FMciFMNrb3YgxxpbCAOxO2ElvlEhuFw:Ioz83OtIEzW+/m/AyF7bCrO/EhuZ/
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1960 rundll32Srv.exe 1396 DesktopLayer.exe -
resource yara_rule behavioral1/files/0x000c0000000054a8-56.dat upx behavioral1/files/0x000c0000000054a8-58.dat upx behavioral1/files/0x000c0000000054a8-60.dat upx behavioral1/files/0x000a000000012326-62.dat upx behavioral1/memory/1960-65-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x000a000000012326-64.dat upx behavioral1/files/0x000a000000012326-67.dat upx behavioral1/memory/1396-68-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
pid Process 1968 rundll32.exe 1960 rundll32Srv.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxE1A9.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
pid pid_target Process procid_target 1232 1968 WerFault.exe 28 -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{4FA47B21-6990-11ED-BD84-7E4CDA66D2DC} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "375795387" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1396 DesktopLayer.exe 1396 DesktopLayer.exe 1396 DesktopLayer.exe 1396 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1080 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 1080 iexplore.exe 1080 iexplore.exe 1484 IEXPLORE.EXE 1484 IEXPLORE.EXE 1484 IEXPLORE.EXE 1484 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 27 IoCs
description pid Process procid_target PID 2020 wrote to memory of 1968 2020 rundll32.exe 28 PID 2020 wrote to memory of 1968 2020 rundll32.exe 28 PID 2020 wrote to memory of 1968 2020 rundll32.exe 28 PID 2020 wrote to memory of 1968 2020 rundll32.exe 28 PID 2020 wrote to memory of 1968 2020 rundll32.exe 28 PID 2020 wrote to memory of 1968 2020 rundll32.exe 28 PID 2020 wrote to memory of 1968 2020 rundll32.exe 28 PID 1968 wrote to memory of 1960 1968 rundll32.exe 29 PID 1968 wrote to memory of 1960 1968 rundll32.exe 29 PID 1968 wrote to memory of 1960 1968 rundll32.exe 29 PID 1968 wrote to memory of 1960 1968 rundll32.exe 29 PID 1968 wrote to memory of 1232 1968 rundll32.exe 30 PID 1968 wrote to memory of 1232 1968 rundll32.exe 30 PID 1968 wrote to memory of 1232 1968 rundll32.exe 30 PID 1968 wrote to memory of 1232 1968 rundll32.exe 30 PID 1960 wrote to memory of 1396 1960 rundll32Srv.exe 31 PID 1960 wrote to memory of 1396 1960 rundll32Srv.exe 31 PID 1960 wrote to memory of 1396 1960 rundll32Srv.exe 31 PID 1960 wrote to memory of 1396 1960 rundll32Srv.exe 31 PID 1396 wrote to memory of 1080 1396 DesktopLayer.exe 32 PID 1396 wrote to memory of 1080 1396 DesktopLayer.exe 32 PID 1396 wrote to memory of 1080 1396 DesktopLayer.exe 32 PID 1396 wrote to memory of 1080 1396 DesktopLayer.exe 32 PID 1080 wrote to memory of 1484 1080 iexplore.exe 34 PID 1080 wrote to memory of 1484 1080 iexplore.exe 34 PID 1080 wrote to memory of 1484 1080 iexplore.exe 34 PID 1080 wrote to memory of 1484 1080 iexplore.exe 34
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\aa726d77e30a4b87adce624179f77ae433993ab15c33d97cf4bf47577beec2db.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2020 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\aa726d77e30a4b87adce624179f77ae433993ab15c33d97cf4bf47577beec2db.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1968 -
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
PID:1960 -
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
PID:1396 -
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
PID:1080 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1080 CREDAT:275457 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1484
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1968 -s 2283⤵
- Program crash
PID:1232
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
608B
MD5758e7c91965f2cc425d9299aba3c433a
SHA17e466a2c24fe1a2d5ea762ebd70faa410cca043f
SHA2561c38a6cc63ca2b098448319494a6f136b4c6341e9457accd35c712aa8a3c4461
SHA512782b1b90c8a91966a5642f249a421043dbe049cf6465b46f1327b76520f4e13abdb274a6e14dc39203c4c150aeeae6917a7a085fd46a329cdee429afacb43b18
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
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Filesize
55KB
MD5ff5e1f27193ce51eec318714ef038bef
SHA1b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA256fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
SHA512c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a