Analysis
- max time kernel
121s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system - submitted
09/08/2024, 07:56
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
PO_5545356763 7767634763.exe
Resource
win7-20240704-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
PO_5545356763 7767634763.exe
Resource
win10v2004-20240802-en
windows10-2004-x64
7 signatures
150 seconds
General
- Target PO_5545356763 7767634763.exe
- Size 748KB
- Sample240809-js3h8asbne
- SHA256 f05d5a2fe9b0e832b06db4df35cdca37b3f729bb750d1707bae6260852e55dab
- MD5 9dacafbc2e728cee1f6b6052f3d83d5e
- SHA1 b663dda28d2e0db17ec162accbce17f6377f3fa9
- SHA512 14ad9406a31e2ffb46b28831db7e553ea25994358925bcc3cd71a3f6e01cb3f24d237f75d087f90cddc3eb3cc89c495bd51ac33f4a1828502934a216da301128
- SSDEEP 12288:QNmgmDtReUoNQWUdtnvfjC4PdwRN+0EakQsRxcr1N0dZN2LZGSZ5TTMX02:QN9mDzW+jHdwRN+0ci1Nk32LZGSZRTM/
- MD5 SHA1 SHA512 SSDEEP
Score
7/10
Malware Config
Signatures
- Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Paint.lnk Caspol.exe - Drops autorun.inf file 1 TTPs 2 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File opened for modification C:\autorun.inf Caspol.exe File opened for modification F:\autorun.inf Caspol.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2512 set thread context of 4332 2512 PO_5545356763 7767634763.exe 85 - Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\vDW20.EXE Caspol.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Source Engine\OSE.EXE Caspol.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-006E-0409-1000-0000000FF1CE}\vmisc.exe Caspol.exe File opened for modification C:\Program Files\Windows Defender\ja-JP\OfflineScannerShell.exe.mui Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\en-US\InputPersonalization.exe.mui Caspol.exe File created C:\Program Files\Common Files\microsoft shared\Source Engine\vOSE.ico Caspol.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\jabswitch.exe Caspol.exe File created C:\Program Files\Google\Chrome\Application\vchrome.ico Caspol.exe File created C:\Program Files\Java\jdk-1.8\bin\javap.exe Caspol.exe File created C:\Program Files\Java\jdk-1.8\bin\javaws.exe Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\de-DE\TabTip.exe.mui Caspol.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\vjava.exe Caspol.exe File opened for modification C:\Program Files\Windows Photo Viewer\ImagingDevices.exe Caspol.exe File created C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome.exe.sig Caspol.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jconsole.exe Caspol.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\FLTLDR.EXE Caspol.exe File opened for modification C:\Program Files\7-Zip\v7zFM.exe Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\de-DE\InputPersonalization.exe.mui Caspol.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe Caspol.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\chrmstp.exe Caspol.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\vchrmstp.exe Caspol.exe File created C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\chrmstp.exe Caspol.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\RCXD730.tmp Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\vOfficeC2RClient.exe Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\Source Engine\vOSE.EXE Caspol.exe File opened for modification C:\Program Files\Google\Chrome\Application\vchrome_proxy.exe Caspol.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\vjinfo.exe Caspol.exe File created C:\Program Files\VideoLAN\VLC\uninstall.exe Caspol.exe File created C:\Program Files\7-Zip\7zG.exe Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\RCXD6AD.tmp Caspol.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\jdeps.exe Caspol.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\RCXD7A0.tmp Caspol.exe File created C:\Program Files\Java\jdk-1.8\bin\jhat.exe Caspol.exe File created C:\Program Files\Java\jdk-1.8\bin\vjinfo.ico Caspol.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\jabswitch.exe Caspol.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-001F-0409-1000-0000000FF1CE}\misc.exe Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\mip.exe Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\MSInfo\en-US\msinfo32.exe.mui Caspol.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe Caspol.exe File opened for modification C:\Program Files\Internet Explorer\fr-FR\iexplore.exe.mui Caspol.exe File created C:\Program Files\Java\jdk-1.8\bin\vjar.ico Caspol.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\vjavapackager.exe Caspol.exe File opened for modification C:\Program Files\Microsoft Office\Office16\vOSPPREARM.EXE Caspol.exe File created C:\Program Files\Microsoft Office\root\Integration\vIntegrator.ico Caspol.exe File created C:\Program Files\7-Zip\7zFM.exe Caspol.exe File created C:\Program Files\7-Zip\vUninstall.ico Caspol.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\setup.exe Caspol.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\vFLTLDR.ico Caspol.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe Caspol.exe File created C:\Program Files\Google\Chrome\Application\123.0.6312.123\vchrome.exe.ico Caspol.exe File opened for modification C:\Program Files\Internet Explorer\ExtExport.exe Caspol.exe File opened for modification C:\Program Files\Internet Explorer\uk-UA\iexplore.exe.mui Caspol.exe File created C:\Program Files\Java\jdk-1.8\bin\javadoc.exe Caspol.exe File created C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-000F-0000-1000-0000000FF1CE}\vaccicons.ico Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\it-IT\InputPersonalization.exe.mui Caspol.exe File opened for modification C:\Program Files\Common Files\microsoft shared\MSInfo\de-DE\msinfo32.exe.mui Caspol.exe File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome.exe.sig Caspol.exe File created C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-001F-0C0A-1000-0000000FF1CE}\misc.exe Caspol.exe File opened for modification C:\Program Files\Microsoft Office 15\ClientX64\RCXD873.tmp Caspol.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\vidlj.exe Caspol.exe File created C:\Program Files\Java\jdk-1.8\bin\vjabswitch.ico Caspol.exe File opened for modification C:\Program Files\Java\jdk-1.8\bin\javah.exe Caspol.exe File created C:\Program Files\Java\jdk-1.8\bin\vextcheck.ico Caspol.exe File opened for modification C:\Program Files\Microsoft Office\root\Integration\Integrator.exe Caspol.exe - Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification C:\Windows\bfsvc.exe Caspol.exe - System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Caspol.exe - Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85 PID 2512 wrote to memory of 4332 2512 PO_5545356763 7767634763.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\PO_5545356763 7767634763.exe"C:\Users\Admin\AppData\Local\Temp\PO_5545356763 7767634763.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2512 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"2⤵
- Drops startup file
- Drops autorun.inf file
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:4332
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Program Files\7-Zip\7z.exe
- Size 106KB
- SHA256 7d3bdb5b7ee9685c7c18c0c3272da2a593f6c5c326f1ea67f22aae27c57ba1e6
- MD5 914f728c04d3eddd5fba59420e74e56b
- SHA1 8c68ca3f013c490161c0156ef359af03594ae5e2
- SHA512 d7e49b361544ba22a0c66cf097e9d84db4f3759fbcc20386251caac6da80c591861c1468cb7a102eee1a1f86c974086ebc61de4027f9cd22ad06d63550400d6d
- SSDEEP 1536:QSF7vA1hRqHNxxMjlI3ZC+0CtOss6mdcQ6A4vhZ91RKGpQJN:nA1hYPMUs6mdclA4vhNRKG4N
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Program Files\7-Zip\RCXD67C.tmp
- Size 94KB
- SHA256 fd3bafcfcd4410242e48c9f00217c2c197d89973edbe40581e38fcbd620a1570
- MD5 0ff243dc1c58b578dc85b8268ce13a2f
- SHA1 5cdbc24100710b730424407927ebbce2c43f4e46
- SHA512 fd3bdbcb6118f34fa99bedf6bf3ea3b12e733c4b6816b93690e77b20d8fd94870725115a7ce1b3c882af30046f7d42497f32ec480a8b176d092b494f5bcc3764
- SSDEEP 1536:aSF7vA1hRqHNxxMjlI3ZC+0CtOss6mdcQ6A4vhZ91Rj3:hA1hYPMUs6mdclA4vhNRj3
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Program Files\Java\jdk-1.8\bin\vjavaws.ico
- Size 4KB
- SHA256 611f2cb2e03bd8dbcb584cd0a1c48accfba072dd3fc4e6d3144e2062553637f5
- MD5 38b41d03e9dfcbbd08210c5f0b50ba71
- SHA1 2fbfde75ce9fe8423d8e7720bf7408cedcb57a70
- SHA512 ec97556b6ff6023d9e6302ba586ef27b1b54fbf7e8ac04ff318aa4694f13ad343049210ef17b7b603963984c1340589665d67d9c65fec0f91053ff43b1401ba9
- SSDEEP 96:GxZnQuikS0jj8KJy9QhT8PB5CXMaTFgL3n:GxZQuiQjruQ65wXMWA
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Program Files\Microsoft Office 15\ClientX64\vIntegratedOffice.ico
- Size 4KB
- SHA256 a058bfd185fe714927e15642004866449bce425d34292a08af56d66cf03ebe6c
- MD5 3ea9bcbc01e1a652de5a6fc291a66d1a
- SHA1 aee490d53ee201879dff37503a0796c77642a792
- SHA512 7c740132f026341770b6a20575786da581d8a31850d0d680978a00cc4dfca1e848ef9cdc32e51bae680ea13f6cc0d7324c38765cb4e26dcb2e423aced7da0501
- SSDEEP 48:r2pe4sdnY/3XXXXXXXXXXcDD3V+yD3/6k0vucpb:r6bsdnY/XXXXXXXXXXcDD3Vr/6Jvu6
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-001F-0C0A-1000-0000000FF1CE}\vmisc.ico
- Size 4KB
- SHA256 3cc5043caa157e5f9b1870527b8c323850bdae1e58d6760e4e895d2ab8a35a05
- MD5 fc27f73816c9f640d800cdc1c9294751
- SHA1 e6c3d8835d1de4e9606e5588e741cd1be27398f6
- SHA512 9e36b96acc97bc7cd45e67a47f1ae7ab7d3818cc2fdaad147524ce9e4baedfaac9cd012923ec65db763bfd850c65b497376bb0694508bee59747f97bf1591fd4
- SSDEEP 12:GFXAOAO9XAkXRABEXAOAOANXAO6qOyvOyYvOy44o4v44PQ91pnSqu:GiB7GABbBBa1qlvlYvl44o4v44PQP/u
- MD5 SHA1 SHA512 SSDEEP
- Path F:\autorun.inf
- Size 102B
- SHA256 94e323bd9071db7369ade16f45454e7a0dbfb6a39efddc1234c4719d1f7ee4c2
- MD5 5513829683bff23161ca7d8595c25c72
- SHA1 9961b65bbd3bac109dddd3a161fc30650e8a7096
- SHA512 308c84446106cda0a71e37b0de46aaf4b7361f9ddcc3c4c29f8e87da8acb606525dce8a42caf9d74e708c56b31c524f9535a2f5f4757c6c357401da1c495ddb6
- MD5 SHA1 SHA512