Analysis
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max time kernel
147s -
max time network
174s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
04/12/2022, 01:44
Static task
static1
Behavioral task
behavioral1
Sample
fb46c81f1c7b9dd8b97c8cbdf713536b4f788b1911849fb7af7e6f308c62db06.dll
Resource
win7-20220901-en
General
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Target
fb46c81f1c7b9dd8b97c8cbdf713536b4f788b1911849fb7af7e6f308c62db06.dll
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Size
260KB
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MD5
68425b3eb0fb25d2195233d424c8f14f
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SHA1
34dd70df3e0e2466be4cf0bb5e9ef4da6d65b2b3
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SHA256
fb46c81f1c7b9dd8b97c8cbdf713536b4f788b1911849fb7af7e6f308c62db06
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SHA512
f72abe49154b2616581af14cb86063e61559379bcd315484d9896da33efebac6f480f524184f7fdd5c06de6993fa0f570b9a81ff9f8c5ab14bacc9ea28021550
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SSDEEP
3072:bm07c4fHCp/AZX/AGUBUpV7Os2kKerYVSrfishHwJjocVFEn8iFINGY9MHwYL9gf:97dHCc/ASsad1rasdUVU8h8OrYeshT
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 4876 regsvr32Srv.exe 4856 DesktopLayer.exe -
resource yara_rule behavioral2/files/0x0007000000022e3f-134.dat upx behavioral2/memory/4876-135-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x0007000000022e3f-136.dat upx behavioral2/memory/4876-139-0x0000000000400000-0x000000000042E000-memory.dmp upx behavioral2/files/0x0008000000022e46-140.dat upx behavioral2/files/0x0008000000022e46-138.dat upx behavioral2/memory/4856-141-0x0000000000400000-0x000000000042E000-memory.dmp upx -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\regsvr32Srv.exe regsvr32.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxC3E1.tmp regsvr32Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe regsvr32Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe regsvr32Srv.exe -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31001146" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31001146" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{C46D1519-762D-11ED-89AC-5203DB9D3E0F} = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2588734839" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2588734839" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "377182423" iexplore.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 4856 DesktopLayer.exe 4856 DesktopLayer.exe 4856 DesktopLayer.exe 4856 DesktopLayer.exe 4856 DesktopLayer.exe 4856 DesktopLayer.exe 4856 DesktopLayer.exe 4856 DesktopLayer.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3396 iexplore.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3396 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3396 iexplore.exe 3396 iexplore.exe 4716 IEXPLORE.EXE 4716 IEXPLORE.EXE 4716 IEXPLORE.EXE 4716 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1880 wrote to memory of 4956 1880 regsvr32.exe 81 PID 1880 wrote to memory of 4956 1880 regsvr32.exe 81 PID 1880 wrote to memory of 4956 1880 regsvr32.exe 81 PID 4956 wrote to memory of 4876 4956 regsvr32.exe 82 PID 4956 wrote to memory of 4876 4956 regsvr32.exe 82 PID 4956 wrote to memory of 4876 4956 regsvr32.exe 82 PID 4876 wrote to memory of 4856 4876 regsvr32Srv.exe 83 PID 4876 wrote to memory of 4856 4876 regsvr32Srv.exe 83 PID 4876 wrote to memory of 4856 4876 regsvr32Srv.exe 83 PID 4856 wrote to memory of 3396 4856 DesktopLayer.exe 84 PID 4856 wrote to memory of 3396 4856 DesktopLayer.exe 84 PID 3396 wrote to memory of 4716 3396 iexplore.exe 85 PID 3396 wrote to memory of 4716 3396 iexplore.exe 85 PID 3396 wrote to memory of 4716 3396 iexplore.exe 85
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\fb46c81f1c7b9dd8b97c8cbdf713536b4f788b1911849fb7af7e6f308c62db06.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1880 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\fb46c81f1c7b9dd8b97c8cbdf713536b4f788b1911849fb7af7e6f308c62db06.dll2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Windows\SysWOW64\regsvr32Srv.exeC:\Windows\SysWOW64\regsvr32Srv.exe3⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4876 -
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:4856 -
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
PID:3396 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3396 CREDAT:17410 /prefetch:26⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4716
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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