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Analysis
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max time kernel
105s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
06/11/2022, 20:52
Static task
static1
Behavioral task
behavioral1
Sample
9f4703f71d08d356e543627ade7a346203d1f7829e8b1cd2dd4986e339fcb999.dll
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
9f4703f71d08d356e543627ade7a346203d1f7829e8b1cd2dd4986e339fcb999.dll
Resource
win10v2004-20220812-en
General
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Target
9f4703f71d08d356e543627ade7a346203d1f7829e8b1cd2dd4986e339fcb999.dll
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Size
565KB
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MD5
06f21ade486bcf5d9b6cee0942533b20
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SHA1
3593ab042513f080dd8a5bc1e0d6f896bc849a90
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SHA256
9f4703f71d08d356e543627ade7a346203d1f7829e8b1cd2dd4986e339fcb999
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SHA512
54aa9f11dedc51c1148bcde45d71386c2766ba79bd3ad4ebee870973957938028c2334ae904aca61d7f803661a518bdd69836798e0444c843518b7c062ee924d
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SSDEEP
12288:gN5zT81Z1GVUbfwRflTErY1xDCWGrxoS0bCUWh:g7zuZY+bfwRflTEk1xD7Yfh
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1268 rundll32Srv.exe 1136 DesktopLayer.exe -
resource yara_rule behavioral1/files/0x000500000000b2d2-56.dat upx behavioral1/files/0x000500000000b2d2-58.dat upx behavioral1/files/0x000500000000b2d2-60.dat upx behavioral1/files/0x000a0000000122ef-62.dat upx behavioral1/memory/1268-65-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/files/0x000a0000000122ef-64.dat upx behavioral1/files/0x000a0000000122ef-67.dat upx behavioral1/memory/1136-68-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral1/memory/848-69-0x0000000074940000-0x00000000749D2000-memory.dmp upx -
Loads dropped DLL 2 IoCs
pid Process 848 rundll32.exe 1268 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\px3F8.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 1772 848 WerFault.exe 27 -
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{8AEAF7D1-5E51-11ED-AA9B-EE0F1DD48A27} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374558966" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1136 DesktopLayer.exe 1136 DesktopLayer.exe 1136 DesktopLayer.exe 1136 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 536 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 536 iexplore.exe 536 iexplore.exe 1496 IEXPLORE.EXE 1496 IEXPLORE.EXE 1496 IEXPLORE.EXE 1496 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 27 IoCs
description pid Process procid_target PID 1264 wrote to memory of 848 1264 rundll32.exe 27 PID 1264 wrote to memory of 848 1264 rundll32.exe 27 PID 1264 wrote to memory of 848 1264 rundll32.exe 27 PID 1264 wrote to memory of 848 1264 rundll32.exe 27 PID 1264 wrote to memory of 848 1264 rundll32.exe 27 PID 1264 wrote to memory of 848 1264 rundll32.exe 27 PID 1264 wrote to memory of 848 1264 rundll32.exe 27 PID 848 wrote to memory of 1268 848 rundll32.exe 28 PID 848 wrote to memory of 1268 848 rundll32.exe 28 PID 848 wrote to memory of 1268 848 rundll32.exe 28 PID 848 wrote to memory of 1268 848 rundll32.exe 28 PID 848 wrote to memory of 1772 848 rundll32.exe 29 PID 848 wrote to memory of 1772 848 rundll32.exe 29 PID 848 wrote to memory of 1772 848 rundll32.exe 29 PID 848 wrote to memory of 1772 848 rundll32.exe 29 PID 1268 wrote to memory of 1136 1268 rundll32Srv.exe 30 PID 1268 wrote to memory of 1136 1268 rundll32Srv.exe 30 PID 1268 wrote to memory of 1136 1268 rundll32Srv.exe 30 PID 1268 wrote to memory of 1136 1268 rundll32Srv.exe 30 PID 1136 wrote to memory of 536 1136 DesktopLayer.exe 31 PID 1136 wrote to memory of 536 1136 DesktopLayer.exe 31 PID 1136 wrote to memory of 536 1136 DesktopLayer.exe 31 PID 1136 wrote to memory of 536 1136 DesktopLayer.exe 31 PID 536 wrote to memory of 1496 536 iexplore.exe 33 PID 536 wrote to memory of 1496 536 iexplore.exe 33 PID 536 wrote to memory of 1496 536 iexplore.exe 33 PID 536 wrote to memory of 1496 536 iexplore.exe 33
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\9f4703f71d08d356e543627ade7a346203d1f7829e8b1cd2dd4986e339fcb999.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1264 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\9f4703f71d08d356e543627ade7a346203d1f7829e8b1cd2dd4986e339fcb999.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:848 -
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:1268 -
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:1136 -
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:536 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:536 CREDAT:275457 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1496
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 848 -s 2403⤵
- Program crash
PID:1772
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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
603B
MD5cea1ea8be4daec9c24038292c47edd0c
SHA1ac9847f6f1d907f6c27dea31882012db0b4c6f90
SHA256c1ca249713e71634e2ffa9f45e3fcb34946c3f145a3695340959f211177aa2b2
SHA512cc15d9de1883c3194abb027ef5dc66f53619e781d87c73c8e91fa2e1d23f85b81c6239e393810cfe8cdd7b72b5bebe019a29765a037743964d3e147c29861f8d
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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