Analysis
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max time kernel
146s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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 620 c7453fccf113e393515bb6c6af7f0b73Srv.exe 4748 DesktopLayer.exe -
resource yara_rule behavioral2/memory/620-7-0x0000000000400000-0x0000000000413000-memory.dmp upx behavioral2/memory/620-14-0x0000000000400000-0x0000000000413000-memory.dmp upx behavioral2/memory/4748-19-0x0000000000400000-0x0000000000413000-memory.dmp upx -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft\pxA160.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-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\GPU IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "472282137" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "475094861" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31094186" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31094186" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "475249748" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "417142587" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\"" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{47054E14-E19D-11EE-96FD-D65EEEF40ABB} = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "472282137" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31094186" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31094186" iexplore.exe -
Modifies registry class 13 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.wab c7453fccf113e393515bb6c6af7f0b73.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.vcf c7453fccf113e393515bb6c6af7f0b73.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon c7453fccf113e393515bb6c6af7f0b73.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\MIME\Database\Content Type\text/x-vcard c7453fccf113e393515bb6c6af7f0b73.exe Key created \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000_Classes\Local Settings c7453fccf113e393515bb6c6af7f0b73.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.vcf\ = "vcard_wab_auto_file" 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\MIME\Database\Content Type\text/x-vcard\Extension = ".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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\vcard_wab_auto_file\DefaultIcon\ = "\"C:\\Program Files (x86)\\Windows Mail\\wab.exe\",1" c7453fccf113e393515bb6c6af7f0b73.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.vcf\Content Type = "text/x-vcard" c7453fccf113e393515bb6c6af7f0b73.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 4748 DesktopLayer.exe 4748 DesktopLayer.exe 4748 DesktopLayer.exe 4748 DesktopLayer.exe 4748 DesktopLayer.exe 4748 DesktopLayer.exe 4748 DesktopLayer.exe 4748 DesktopLayer.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3116 iexplore.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 3116 iexplore.exe 3116 iexplore.exe 1544 IEXPLORE.EXE 1544 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4672 wrote to memory of 620 4672 c7453fccf113e393515bb6c6af7f0b73.exe 88 PID 4672 wrote to memory of 620 4672 c7453fccf113e393515bb6c6af7f0b73.exe 88 PID 4672 wrote to memory of 620 4672 c7453fccf113e393515bb6c6af7f0b73.exe 88 PID 620 wrote to memory of 4748 620 c7453fccf113e393515bb6c6af7f0b73Srv.exe 91 PID 620 wrote to memory of 4748 620 c7453fccf113e393515bb6c6af7f0b73Srv.exe 91 PID 620 wrote to memory of 4748 620 c7453fccf113e393515bb6c6af7f0b73Srv.exe 91 PID 4748 wrote to memory of 3116 4748 DesktopLayer.exe 92 PID 4748 wrote to memory of 3116 4748 DesktopLayer.exe 92 PID 3116 wrote to memory of 1544 3116 iexplore.exe 94 PID 3116 wrote to memory of 1544 3116 iexplore.exe 94 PID 3116 wrote to memory of 1544 3116 iexplore.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\c7453fccf113e393515bb6c6af7f0b73.exe"C:\Users\Admin\AppData\Local\Temp\c7453fccf113e393515bb6c6af7f0b73.exe"1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4672 -
C:\Users\Admin\AppData\Local\Temp\c7453fccf113e393515bb6c6af7f0b73Srv.exeC:\Users\Admin\AppData\Local\Temp\c7453fccf113e393515bb6c6af7f0b73Srv.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:620 -
C:\Program Files (x86)\Microsoft\DesktopLayer.exe"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4748 -
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:3116 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3116 CREDAT:17410 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1544
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:2716
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
15KB
MD51a545d0052b581fbb2ab4c52133846bc
SHA162f3266a9b9925cd6d98658b92adec673cbe3dd3
SHA256557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
SHA512bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d
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Filesize
17KB
MD55a34cb996293fde2cb7a4ac89587393a
SHA13c96c993500690d1a77873cd62bc639b3a10653f
SHA256c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
SHA512e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
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Filesize
52KB
MD517efb7e40d4cadaf3a4369435a8772ec
SHA1eb9302063ac2ab599ae93aaa1e45b88bbeacbca2
SHA256f515564b67efd06fa42f57532feafc49d40b0fc36c5d4935300dd55416f0a386
SHA512522fba06304950860fa9aa8933b12b9323dea47dbda363db3f57535396c156c4cf6934a9db38fff8c77503fcb889d030fadb639094a1f34bbad54c79c8734450