Analysis
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max time kernel
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max time network
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platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
14/03/2024, 00:53
Static task
static1
Behavioral task
behavioral1
Sample
c7453fccf113e393515bb6c6af7f0b73.exe
Resource
win7-20240221-en
General
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Target
c7453fccf113e393515bb6c6af7f0b73.exe
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Size
98KB
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MD5
c7453fccf113e393515bb6c6af7f0b73
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SHA1
29bc0b27594dc06a1c34be2de5a94c9bba8a55be
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SHA256
e25d37f0e34e022913ed08284f08fc44538cf8ce9aacf24f492774ef7445b40e
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SHA512
9d2343325ec30bc700448bf0a8dcb4ea11cc7acbde9f31ee8bc0b047ff1816f61de2595a373f9367fdff425a01ff56d70e889389149e95874fbc18ecac1f9d62
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SSDEEP
3072:4BKwcvdwuxdWikJlCpUG+BEQ56XO3VuDm9TkeH:4BKwcvdnECmG6VuOYaOeH
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1656 c7453fccf113e393515bb6c6af7f0b73Srv.exe 2952 DesktopLayer.exe -
Loads dropped DLL 4 IoCs
pid Process 2240 c7453fccf113e393515bb6c6af7f0b73.exe 2240 c7453fccf113e393515bb6c6af7f0b73.exe 1656 c7453fccf113e393515bb6c6af7f0b73Srv.exe 1656 c7453fccf113e393515bb6c6af7f0b73Srv.exe -
resource yara_rule behavioral1/memory/1656-10-0x0000000000400000-0x0000000000413000-memory.dmp upx behavioral1/memory/1656-21-0x0000000000400000-0x0000000000413000-memory.dmp upx behavioral1/memory/2952-28-0x0000000000400000-0x0000000000413000-memory.dmp upx behavioral1/memory/2952-26-0x0000000000400000-0x0000000000413000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxCBD.tmp c7453fccf113e393515bb6c6af7f0b73Srv.exe File created C:\Program Files (x86)\Microsoft\DesktopLayer.exe c7453fccf113e393515bb6c6af7f0b73Srv.exe File opened for modification C:\Program Files (x86)\Microsoft\DesktopLayer.exe c7453fccf113e393515bb6c6af7f0b73Srv.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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description ioc Process Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\SearchScopes\DownloadRetries = "3" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{37BA2831-E19D-11EE-AB41-FA5112F1BCBF} = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "416539456" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\SearchScopes iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1" iexplore.exe -
Modifies registry class 12 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.vcf c7453fccf113e393515bb6c6af7f0b73.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command c7453fccf113e393515bb6c6af7f0b73.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\shell\open\command\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\" /vcard %1" c7453fccf113e393515bb6c6af7f0b73.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon c7453fccf113e393515bb6c6af7f0b73.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.wab c7453fccf113e393515bb6c6af7f0b73.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.vcf\ = "vcard_wab_auto_file" c7453fccf113e393515bb6c6af7f0b73.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.vcf\Content Type = "text/x-vcard" c7453fccf113e393515bb6c6af7f0b73.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file c7453fccf113e393515bb6c6af7f0b73.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\ = "vCard File" c7453fccf113e393515bb6c6af7f0b73.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\",1" c7453fccf113e393515bb6c6af7f0b73.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard c7453fccf113e393515bb6c6af7f0b73.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard\Extension = ".vcf" c7453fccf113e393515bb6c6af7f0b73.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2952 DesktopLayer.exe 2952 DesktopLayer.exe 2952 DesktopLayer.exe 2952 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2532 iexplore.exe -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 2532 iexplore.exe 2532 iexplore.exe 2796 IEXPLORE.EXE 2796 IEXPLORE.EXE 2796 IEXPLORE.EXE 2796 IEXPLORE.EXE -
Suspicious use of UnmapMainImage 2 IoCs
pid Process 1656 c7453fccf113e393515bb6c6af7f0b73Srv.exe 2952 DesktopLayer.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 2240 wrote to memory of 1656 2240 c7453fccf113e393515bb6c6af7f0b73.exe 28 PID 2240 wrote to memory of 1656 2240 c7453fccf113e393515bb6c6af7f0b73.exe 28 PID 2240 wrote to memory of 1656 2240 c7453fccf113e393515bb6c6af7f0b73.exe 28 PID 2240 wrote to memory of 1656 2240 c7453fccf113e393515bb6c6af7f0b73.exe 28 PID 1656 wrote to memory of 2952 1656 c7453fccf113e393515bb6c6af7f0b73Srv.exe 29 PID 1656 wrote to memory of 2952 1656 c7453fccf113e393515bb6c6af7f0b73Srv.exe 29 PID 1656 wrote to memory of 2952 1656 c7453fccf113e393515bb6c6af7f0b73Srv.exe 29 PID 1656 wrote to memory of 2952 1656 c7453fccf113e393515bb6c6af7f0b73Srv.exe 29 PID 2952 wrote to memory of 2532 2952 DesktopLayer.exe 30 PID 2952 wrote to memory of 2532 2952 DesktopLayer.exe 30 PID 2952 wrote to memory of 2532 2952 DesktopLayer.exe 30 PID 2952 wrote to memory of 2532 2952 DesktopLayer.exe 30 PID 2532 wrote to memory of 2796 2532 iexplore.exe 31 PID 2532 wrote to memory of 2796 2532 iexplore.exe 31 PID 2532 wrote to memory of 2796 2532 iexplore.exe 31 PID 2532 wrote to memory of 2796 2532 iexplore.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\c7453fccf113e393515bb6c6af7f0b73.exe"C:\Users\Admin\AppData\Local\Temp\c7453fccf113e393515bb6c6af7f0b73.exe"1⤵
- Loads dropped DLL
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2240 -
C:\Users\Admin\AppData\Local\Temp\c7453fccf113e393515bb6c6af7f0b73Srv.exeC:\Users\Admin\AppData\Local\Temp\c7453fccf113e393515bb6c6af7f0b73Srv.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1656 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2952 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe"4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2532 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2532 CREDAT:275457 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2796
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD5753df6889fd7410a2e9fe333da83a429
SHA13c425f16e8267186061dd48ac1c77c122962456e
SHA256b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78
SHA5129d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize304B
MD5f200e2eb8d59d5c59fba04d6659b2899
SHA120793a820d5dda38223bb25d9ae3d5b64cf6c6e6
SHA25632cdafe39570e447679b3bf399aa284aaa352867c9aef365ee7719c4a80e4083
SHA5122399ead92fa19b2089b5dbdf102d42f08800eea0a7cd0453bc25f02cee50f8e5f09af3ddcaa29c2aee32124e561ed8894dc32e1b24f75689f9815a34fcdcefce
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize304B
MD55d1c11fb2150e61980c813678efb3a3c
SHA16d1da4224ae1319a658f3d4aa67e356bfa50fc05
SHA2563087a728146b04f12b6f80b904a2bd91b3be90849b78e85d7756f5b666d6fd78
SHA512d72583427f6151c1c85506abc0dbc94ec44e4816d933c22e56b3af2159bf7c5fcf0f03d3f59fd2fb491453166bedb9fb261b1e2c3dbd817f34c021f5e133c142
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Filesize
175KB
MD5dd73cead4b93366cf3465c8cd32e2796
SHA174546226dfe9ceb8184651e920d1dbfb432b314e
SHA256a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22
SHA512ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63
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Filesize
52KB
MD517efb7e40d4cadaf3a4369435a8772ec
SHA1eb9302063ac2ab599ae93aaa1e45b88bbeacbca2
SHA256f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386
SHA512522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450