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Analysis
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max time kernel
129s -
max time network
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platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
06/11/2022, 21:32
Static task
static1
Behavioral task
behavioral1
Sample
171108cb0b919b4ad4a2a50a6de1adccbd8127e8abdd6cb87ef9d797f222b240.dll
Resource
win7-20220812-en
General
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Target
171108cb0b919b4ad4a2a50a6de1adccbd8127e8abdd6cb87ef9d797f222b240.dll
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Size
164KB
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MD5
0870413bb5ed8eb202615fa0efda7c30
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SHA1
72851f5f15cf95094c065e94cf3e839c58320831
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SHA256
171108cb0b919b4ad4a2a50a6de1adccbd8127e8abdd6cb87ef9d797f222b240
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SHA512
dadde6de7d761d9cbd279352f832b603eb75849385c94192edf325c2f4a626cd317ddcf2b55ae52450f0452e47d5efe62bf0b813adc7df4e8268b85cbd865279
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SSDEEP
3072:TkLLrSUZ8nRMqL8k5pK/aVj7oc0jrJto/x8STP+YCd:OrS9t8kLh0jrJKZ9TrC
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1032 rundll32Srv.exe 1240 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/0x0009000000013473-62.dat upx behavioral1/files/0x0009000000013473-65.dat upx behavioral1/memory/1032-64-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x0009000000013473-67.dat upx behavioral1/memory/1240-68-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Loads dropped DLL 2 IoCs
pid Process 1436 rundll32.exe 1032 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\pxF77A.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 -
description ioc Process 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\Main 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 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 Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" 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\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373962632" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain 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\Main\WindowsSearch 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\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe 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\IETld\LowMic 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\LowRegistry iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{444CDCC1-5E61-11ED-99B1-EA25B6F29539} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1240 DesktopLayer.exe 1240 DesktopLayer.exe 1240 DesktopLayer.exe 1240 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2040 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 2040 iexplore.exe 2040 iexplore.exe 1300 IEXPLORE.EXE 1300 IEXPLORE.EXE 1300 IEXPLORE.EXE 1300 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 1604 wrote to memory of 1436 1604 rundll32.exe 27 PID 1604 wrote to memory of 1436 1604 rundll32.exe 27 PID 1604 wrote to memory of 1436 1604 rundll32.exe 27 PID 1604 wrote to memory of 1436 1604 rundll32.exe 27 PID 1604 wrote to memory of 1436 1604 rundll32.exe 27 PID 1604 wrote to memory of 1436 1604 rundll32.exe 27 PID 1604 wrote to memory of 1436 1604 rundll32.exe 27 PID 1436 wrote to memory of 1032 1436 rundll32.exe 28 PID 1436 wrote to memory of 1032 1436 rundll32.exe 28 PID 1436 wrote to memory of 1032 1436 rundll32.exe 28 PID 1436 wrote to memory of 1032 1436 rundll32.exe 28 PID 1032 wrote to memory of 1240 1032 rundll32Srv.exe 29 PID 1032 wrote to memory of 1240 1032 rundll32Srv.exe 29 PID 1032 wrote to memory of 1240 1032 rundll32Srv.exe 29 PID 1032 wrote to memory of 1240 1032 rundll32Srv.exe 29 PID 1240 wrote to memory of 2040 1240 DesktopLayer.exe 30 PID 1240 wrote to memory of 2040 1240 DesktopLayer.exe 30 PID 1240 wrote to memory of 2040 1240 DesktopLayer.exe 30 PID 1240 wrote to memory of 2040 1240 DesktopLayer.exe 30 PID 2040 wrote to memory of 1300 2040 iexplore.exe 32 PID 2040 wrote to memory of 1300 2040 iexplore.exe 32 PID 2040 wrote to memory of 1300 2040 iexplore.exe 32 PID 2040 wrote to memory of 1300 2040 iexplore.exe 32
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\171108cb0b919b4ad4a2a50a6de1adccbd8127e8abdd6cb87ef9d797f222b240.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1604 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\171108cb0b919b4ad4a2a50a6de1adccbd8127e8abdd6cb87ef9d797f222b240.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1436 -
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:1032 -
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:1240 -
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:2040 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2040 CREDAT:275457 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1300
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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
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