Analysis
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max time kernel
119s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
05/10/2023, 14:53
Static task
static1
Behavioral task
behavioral1
Sample
Office64MUISet.msi
Resource
win7-20230831-en
windows7-x64
Behavioral task
behavioral2
Sample
Office64MUISet.msi
Resource
win10v2004-20230915-en
windows10-2004-x64
General
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Target
Office64MUISet.msi
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Size
490KB
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MD5
5e566b9c302fb20a7d89677f75274205
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SHA1
6520b190bb2e7d21396951d72212ab8234e15b7c
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SHA256
6f01c5b71094c47c7fbb73cdb456b49a96cbfd7597401766e1831c3c98cf0ed1
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SHA512
f670321b2908f77f7004aa74db44e800544aee6075f42675d028094bf79c6cdfe14ccb2cc8ee64cde05c1833e203b1f42f4cc97e304a162130606b9c27d9015c
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SSDEEP
6144:SrKf8jknJ9nGx+cUry2NQMMM7HA38KvMOYa7edvCkYpd3V9dE39KX:SrKfN9nGyrymCy28KE99z+ZXdES
Malware Config
Signatures
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Loads dropped DLL 2 IoCs
pid Process 1888 MsiExec.exe 1888 MsiExec.exe -
Blocklisted process makes network request 2 IoCs
flow pid Process 3 2076 msiexec.exe 7 2704 msiexec.exe -
Enumerates connected drives 3 TTPs 46 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\S: msiexec.exe -
Drops file in Windows directory 7 IoCs
description ioc Process File opened for modification C:\Windows\INF\setupapi.dev.log DrvInst.exe File created C:\Windows\Installer\f774c8a.msi msiexec.exe File opened for modification C:\Windows\Installer\f774c8a.msi msiexec.exe File opened for modification C:\Windows\Installer\MSI4FB8.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSI5802.tmp msiexec.exe File opened for modification C:\Windows\INF\setupapi.ev3 DrvInst.exe File opened for modification C:\Windows\INF\setupapi.ev1 DrvInst.exe -
Modifies data under HKEY_USERS 43 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople DrvInst.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs DrvInst.exe -
Suspicious use of AdjustPrivilegeToken 55 IoCs
description pid Process Token: SeShutdownPrivilege 2076 msiexec.exe Token: SeIncreaseQuotaPrivilege 2076 msiexec.exe Token: SeRestorePrivilege 2704 msiexec.exe Token: SeTakeOwnershipPrivilege 2704 msiexec.exe Token: SeSecurityPrivilege 2704 msiexec.exe Token: SeCreateTokenPrivilege 2076 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 2076 msiexec.exe Token: SeLockMemoryPrivilege 2076 msiexec.exe Token: SeIncreaseQuotaPrivilege 2076 msiexec.exe Token: SeMachineAccountPrivilege 2076 msiexec.exe Token: SeTcbPrivilege 2076 msiexec.exe Token: SeSecurityPrivilege 2076 msiexec.exe Token: SeTakeOwnershipPrivilege 2076 msiexec.exe Token: SeLoadDriverPrivilege 2076 msiexec.exe Token: SeSystemProfilePrivilege 2076 msiexec.exe Token: SeSystemtimePrivilege 2076 msiexec.exe Token: SeProfSingleProcessPrivilege 2076 msiexec.exe Token: SeIncBasePriorityPrivilege 2076 msiexec.exe Token: SeCreatePagefilePrivilege 2076 msiexec.exe Token: SeCreatePermanentPrivilege 2076 msiexec.exe Token: SeBackupPrivilege 2076 msiexec.exe Token: SeRestorePrivilege 2076 msiexec.exe Token: SeShutdownPrivilege 2076 msiexec.exe Token: SeDebugPrivilege 2076 msiexec.exe Token: SeAuditPrivilege 2076 msiexec.exe Token: SeSystemEnvironmentPrivilege 2076 msiexec.exe Token: SeChangeNotifyPrivilege 2076 msiexec.exe Token: SeRemoteShutdownPrivilege 2076 msiexec.exe Token: SeUndockPrivilege 2076 msiexec.exe Token: SeSyncAgentPrivilege 2076 msiexec.exe Token: SeEnableDelegationPrivilege 2076 msiexec.exe Token: SeManageVolumePrivilege 2076 msiexec.exe Token: SeImpersonatePrivilege 2076 msiexec.exe Token: SeCreateGlobalPrivilege 2076 msiexec.exe Token: SeBackupPrivilege 2568 vssvc.exe Token: SeRestorePrivilege 2568 vssvc.exe Token: SeAuditPrivilege 2568 vssvc.exe Token: SeBackupPrivilege 2704 msiexec.exe Token: SeRestorePrivilege 2704 msiexec.exe Token: SeRestorePrivilege 2004 DrvInst.exe Token: SeRestorePrivilege 2004 DrvInst.exe Token: SeRestorePrivilege 2004 DrvInst.exe Token: SeRestorePrivilege 2004 DrvInst.exe Token: SeRestorePrivilege 2004 DrvInst.exe Token: SeRestorePrivilege 2004 DrvInst.exe Token: SeRestorePrivilege 2004 DrvInst.exe Token: SeLoadDriverPrivilege 2004 DrvInst.exe Token: SeLoadDriverPrivilege 2004 DrvInst.exe Token: SeLoadDriverPrivilege 2004 DrvInst.exe Token: SeRestorePrivilege 2704 msiexec.exe Token: SeTakeOwnershipPrivilege 2704 msiexec.exe Token: SeRestorePrivilege 2704 msiexec.exe Token: SeTakeOwnershipPrivilege 2704 msiexec.exe Token: SeRestorePrivilege 2704 msiexec.exe Token: SeTakeOwnershipPrivilege 2704 msiexec.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2076 msiexec.exe 2076 msiexec.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2704 wrote to memory of 1888 2704 msiexec.exe 34 PID 2704 wrote to memory of 1888 2704 msiexec.exe 34 PID 2704 wrote to memory of 1888 2704 msiexec.exe 34 PID 2704 wrote to memory of 1888 2704 msiexec.exe 34 PID 2704 wrote to memory of 1888 2704 msiexec.exe 34 PID 2704 wrote to memory of 1888 2704 msiexec.exe 34 PID 2704 wrote to memory of 1888 2704 msiexec.exe 34 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Windows\system32\msiexec.exemsiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Office64MUISet.msi1⤵
- Blocklisted process makes network request
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2076
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Blocklisted process makes network request
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2704 -
C:\Windows\syswow64\MsiExec.exeC:\Windows\syswow64\MsiExec.exe -Embedding 247134E1A717766EA154CFC0460E38202⤵
- Loads dropped DLL
PID:1888
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2568
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C:\Windows\system32\DrvInst.exeDrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003C4" "00000000000002FC"1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:2004
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
558B
MD53cc0012f96f8f44164c18d7de05023d9
SHA1c8feb560d751fe720c8bdb53f5e78aa92abb9a9e
SHA2562654c273c211ae1afc60a7736153a853142e3db028417206948576d1d57bf5d5
SHA512626746176663e2460b18f1eb245306107060c172c4e65ad710dd75ec0b348d8f000342c0dd2f7ea3bb2e0796f61e1ddd2cd77c312d6a177ff2e70a10b68cc6af
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5a7aa0566d4dd1093c77d5f51027500d9
SHA1bbd272840d82951b61bd97abe4c3d974c07b91c5
SHA2563c6b5a7e071fcceebe020539820c7cf125077eab125deb27775b030d753551d2
SHA512fc817ac1c93aea0a57d8b6d8ede96c91137b5597d5efb5e9b6a2aab6fcac6b8b82529c60e5f05de62ae3b832146974675ae2cca675fe74ab19edbd9e8a2528b7
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\A44F4E7CB3133FF765C39A53AD8FCFDD
Filesize234B
MD5d34d93efb608d37cb0a11d056321fc22
SHA1737e737ebcbb0dd6812ee3faba895e219f16fa79
SHA256a7ec69f8857c8bcdd66c7580526a0197f72ec505443ba9a782e3b590ff4c4983
SHA512a2bd0b23b565c54f9fa2dd513139b0da3a08f1bafde0cfd871b75aedb62169ea94170480dc600837b0d0b6913c564518cf962b930b129c2abb7735f0a720ad9e
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Filesize
61KB
MD5f3441b8572aae8801c04f3060b550443
SHA14ef0a35436125d6821831ef36c28ffaf196cda15
SHA2566720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
SHA5125ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9
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Filesize
61KB
MD54f0829102cd133bad186ec3ee03cf2a8
SHA14297f15802a5d54bda6fc984ec872b4df5e4801f
SHA2569c494c89a49e812a097333e86322a937e52c6077c16a4be35d61dbbdaa02ce22
SHA512498e41f2b91d49669d99f954c921073550aa7f155b5a85a867ef20ac3b5f510e89779a0da3f23810b67e53603883c137d1ab7d888dcf3f532ef4155524fc0122
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Filesize
61KB
MD54f0829102cd133bad186ec3ee03cf2a8
SHA14297f15802a5d54bda6fc984ec872b4df5e4801f
SHA2569c494c89a49e812a097333e86322a937e52c6077c16a4be35d61dbbdaa02ce22
SHA512498e41f2b91d49669d99f954c921073550aa7f155b5a85a867ef20ac3b5f510e89779a0da3f23810b67e53603883c137d1ab7d888dcf3f532ef4155524fc0122
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Filesize
61KB
MD54f0829102cd133bad186ec3ee03cf2a8
SHA14297f15802a5d54bda6fc984ec872b4df5e4801f
SHA2569c494c89a49e812a097333e86322a937e52c6077c16a4be35d61dbbdaa02ce22
SHA512498e41f2b91d49669d99f954c921073550aa7f155b5a85a867ef20ac3b5f510e89779a0da3f23810b67e53603883c137d1ab7d888dcf3f532ef4155524fc0122
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Filesize
61KB
MD54f0829102cd133bad186ec3ee03cf2a8
SHA14297f15802a5d54bda6fc984ec872b4df5e4801f
SHA2569c494c89a49e812a097333e86322a937e52c6077c16a4be35d61dbbdaa02ce22
SHA512498e41f2b91d49669d99f954c921073550aa7f155b5a85a867ef20ac3b5f510e89779a0da3f23810b67e53603883c137d1ab7d888dcf3f532ef4155524fc0122