Analysis
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max time kernel
80s -
max time network
34s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
26-05-2023 06:56
Static task
static1
Behavioral task
behavioral1
Sample
vcredist_x64.exe
Resource
win7-20230220-en
windows7-x64
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
vcredist_x64.exe
Resource
win10v2004-20230220-en
windows10-2004-x64
3 signatures
150 seconds
General
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Target
vcredist_x64.exe
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Size
6.9MB
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MD5
96b61b8e069832e6b809f24ea74567ba
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SHA1
8bf41ba9eef02d30635a10433817dbb6886da5a2
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SHA256
e554425243e3e8ca1cd5fe550db41e6fa58a007c74fad400274b128452f38fb8
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SHA512
3a55dce14bbd455808bd939a5008b67c9c7111cab61b1339528308022e587726954f8c55a597c6974dc543964bdb6532fe433556fbeeaf9f8cb4d95f2bbffc12
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SSDEEP
196608:19OaQ54oYY7jLwXjZ41OON2uk3bQWgtyccMEL:Gz5x7jLXkmkU4cFe
Score
7/10
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
pid Process 2016 vcredist_x64.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce vcredist_x64.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\{050d4fc8-5d48-4b8f-8972-47c82c46020f} = "\"C:\\ProgramData\\Package Cache\\{050d4fc8-5d48-4b8f-8972-47c82c46020f}\\vcredist_x64.exe\" /burn.runonce" vcredist_x64.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Windows directory 4 IoCs
description ioc Process File opened for modification C:\Windows\WindowsUpdate.log vcredist_x64.exe File opened for modification C:\Windows\INF\setupapi.ev3 DrvInst.exe File opened for modification C:\Windows\INF\setupapi.ev1 DrvInst.exe File opened for modification C:\Windows\INF\setupapi.dev.log DrvInst.exe -
Modifies data under HKEY_USERS 43 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates 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\Microsoft\SystemCertificates\Disallowed\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\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\Disallowed\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust 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\Disallowed\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\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\Root DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\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\TrustedPeople DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA DrvInst.exe -
Modifies registry class 10 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Dependencies\{050d4fc8-5d48-4b8f-8972-47c82c46020f}\ = "{050d4fc8-5d48-4b8f-8972-47c82c46020f}" vcredist_x64.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Dependencies\{050d4fc8-5d48-4b8f-8972-47c82c46020f}\Version = "12.0.30501.0" vcredist_x64.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Dependencies\{050d4fc8-5d48-4b8f-8972-47c82c46020f}\Dependents\{050d4fc8-5d48-4b8f-8972-47c82c46020f} vcredist_x64.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Dependencies\{050d4fc8-5d48-4b8f-8972-47c82c46020f}\Dependents vcredist_x64.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Dependencies\Microsoft.VS.VC_RuntimeMinimumVSU_amd64,v12\Dependents\{050d4fc8-5d48-4b8f-8972-47c82c46020f} vcredist_x64.exe Key created \REGISTRY\MACHINE\Software\Classes\Installer\Dependencies\Microsoft.VS.VC_RuntimeAdditionalVSU_amd64,v12 vcredist_x64.exe Key created \REGISTRY\MACHINE\Software\Classes\Installer\Dependencies\{050d4fc8-5d48-4b8f-8972-47c82c46020f} vcredist_x64.exe Key created \REGISTRY\MACHINE\Software\Classes\Installer\Dependencies\Microsoft.VS.VC_RuntimeMinimumVSU_amd64,v12 vcredist_x64.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Dependencies\Microsoft.VS.VC_RuntimeAdditionalVSU_amd64,v12\Dependents\{050d4fc8-5d48-4b8f-8972-47c82c46020f} vcredist_x64.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Dependencies\{050d4fc8-5d48-4b8f-8972-47c82c46020f}\DisplayName = "Microsoft Visual C++ 2013 Redistributable (x64) - 12.0.30501" vcredist_x64.exe -
Suspicious use of AdjustPrivilegeToken 13 IoCs
description pid Process Token: SeBackupPrivilege 840 vssvc.exe Token: SeRestorePrivilege 840 vssvc.exe Token: SeAuditPrivilege 840 vssvc.exe Token: SeRestorePrivilege 1452 DrvInst.exe Token: SeRestorePrivilege 1452 DrvInst.exe Token: SeRestorePrivilege 1452 DrvInst.exe Token: SeRestorePrivilege 1452 DrvInst.exe Token: SeRestorePrivilege 1452 DrvInst.exe Token: SeRestorePrivilege 1452 DrvInst.exe Token: SeRestorePrivilege 1452 DrvInst.exe Token: SeLoadDriverPrivilege 1452 DrvInst.exe Token: SeLoadDriverPrivilege 1452 DrvInst.exe Token: SeLoadDriverPrivilege 1452 DrvInst.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2016 vcredist_x64.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2040 wrote to memory of 2016 2040 vcredist_x64.exe 28 PID 2040 wrote to memory of 2016 2040 vcredist_x64.exe 28 PID 2040 wrote to memory of 2016 2040 vcredist_x64.exe 28 PID 2040 wrote to memory of 2016 2040 vcredist_x64.exe 28 PID 2040 wrote to memory of 2016 2040 vcredist_x64.exe 28 PID 2040 wrote to memory of 2016 2040 vcredist_x64.exe 28 PID 2040 wrote to memory of 2016 2040 vcredist_x64.exe 28 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\vcredist_x64.exe"C:\Users\Admin\AppData\Local\Temp\vcredist_x64.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2040 -
C:\Users\Admin\AppData\Local\Temp\vcredist_x64.exe"C:\Users\Admin\AppData\Local\Temp\vcredist_x64.exe" -burn.unelevated BurnPipe.{FE1AED34-D887-4F4E-B3DF-E29BE8CCB4A6} {680B69D2-D2BD-44F0-BB47-BAB8D21A3BD1} 20402⤵
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
PID:2016
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:840
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C:\Windows\system32\DrvInst.exeDrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000004A0" "00000000000004B4"1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1452
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD5d6bd210f227442b3362493d046cea233
SHA1ff286ac8370fc655aea0ef35e9cf0bfcb6d698de
SHA256335a256d4779ec5dcf283d007fb56fd8211bbcaf47dcd70fe60ded6a112744ef
SHA512464aaab9e08de610ad34b97d4076e92dc04c2cdc6669f60bfc50f0f9ce5d71c31b8943bd84cee1a04fb9ab5bbed3442bd41d9cb21a0dd170ea97c463e1ce2b5b
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Filesize
450KB
MD5e16e6d68ce1949c9721656390f47ce07
SHA19009cca5dc05e22f4cf0d8529a473f19b363103b
SHA25618e6d3d96fcd39ba069c0e6ebc108881ec5bb07e29a24b0177688ce391dac526
SHA51263a179e4db0cb7954ddc9aee9e3c7aecae9e160154243b248b94647eb8defafb7041ee291f6f880dc3ca7f298dd548e4b3cf0b650e9a7e34f34d2d2f0dd36127
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Filesize
117KB
MD5a52e5220efb60813b31a82d101a97dcb
SHA156e16e4df0944cb07e73a01301886644f062d79b
SHA256e7c8e7edd9112137895820e789baaaeca41626b01fb99fede82968ddb66d02cf
SHA512d6565ba18b5b9795d6bde3ef94d8f7cd77bf8bb69ba3fe7adefb80fc7c5d888cdfdc79238d86a0839846aea4a1e51fc0caed3d62f7054885e8b15fad9f6c654e
