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Analysis
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max time kernel
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max time network
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platform
windows10-1703_x64 -
resource
win10-20220901-en -
resource tags
arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system -
submitted
12/09/2022, 18:48
Static task
static1
Behavioral task
behavioral1
Sample
37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe
Resource
win10-20220901-en
General
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Target
37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe
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Size
716KB
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MD5
55b58a200828514b383fdf4ba2b04397
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SHA1
0df428af82fedc30cb37ee41ec01abfb8211bb77
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SHA256
37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7
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SHA512
fd1e958336b0d91c7ab1ed910d14b178f4206597fd95849bdc7dbdfac513e3281516b848dfac3ffe62a1c78de076ab9fbb546822a363e837887d5b37f2ff968f
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SSDEEP
768:rZmchlXKGREW6VA6joSRhFH+C9Pe2auEqainmngYWxuv8Gwmwoe9R4ZstojtfcWv:schl6M+lpDCUoHid0bIrlyR
Malware Config
Signatures
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Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
pid Process 4656 dllhost.exe -
Adds Run key to start application 2 TTPs 9 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\Cortana = "C:\\Program Files\\WindowsApps\\Microsoft.x64__8wekyb3gfdfdgd8bbwe\\Cortana.exe" dllhost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\SecurityHealthSystray = "C:\\Windows\\System32\\SecurityHealthSystray.exe" dllhost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsDefender = "C:\\Program Files\\Windows Defender\\MpCmdRun.exe" dllhost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "C:\\Windows\\System32\\wbem\\WmiPrvSE.exe" dllhost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\AntiMalwareServiceExecutable = "C:\\ProgramData\\Microsoft\\Windows Defender\\Platform\\4.18.2111.5-0\\MsMpEng.exe" dllhost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicrosoftEdgeUpd = "C:\\Program Files\\WindowsApps\\Microsoft.x64__8wekyb3gfdfdgd8bbwe/file.exe" dllhost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\OneDriveService = "C:\\Program Files\\WindowsApps\\Microsoft.x64__8wekyb3gfdfdgd8bbwe/file.exe" dllhost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\NvStray = "C:\\Program Files\\WindowsApps\\Microsoft.x64__8wekyb3gfdfdgd8bbwe/file.exe" dllhost.exe Set value (str) \REGISTRY\USER\S-1-5-21-2368682536-4045190062-1465778271-1000\Software\Microsoft\Windows\CurrentVersion\Run\dllhost = "C:\\ProgramData\\Dllhost\\dllhost.exe" dllhost.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Creates scheduled task(s) 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2192 schtasks.exe 392 schtasks.exe 4144 schtasks.exe 4172 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3604 powershell.exe 3604 powershell.exe 3604 powershell.exe 1644 powershell.exe 1644 powershell.exe 1644 powershell.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe 4656 dllhost.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3604 powershell.exe Token: SeDebugPrivilege 4944 37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe Token: SeDebugPrivilege 1644 powershell.exe Token: SeDebugPrivilege 4656 dllhost.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 4944 wrote to memory of 1696 4944 37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe 66 PID 4944 wrote to memory of 1696 4944 37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe 66 PID 4944 wrote to memory of 1696 4944 37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe 66 PID 1696 wrote to memory of 2784 1696 cmd.exe 68 PID 1696 wrote to memory of 2784 1696 cmd.exe 68 PID 1696 wrote to memory of 2784 1696 cmd.exe 68 PID 1696 wrote to memory of 3604 1696 cmd.exe 69 PID 1696 wrote to memory of 3604 1696 cmd.exe 69 PID 1696 wrote to memory of 3604 1696 cmd.exe 69 PID 1696 wrote to memory of 1644 1696 cmd.exe 70 PID 1696 wrote to memory of 1644 1696 cmd.exe 70 PID 1696 wrote to memory of 1644 1696 cmd.exe 70 PID 4944 wrote to memory of 4656 4944 37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe 71 PID 4944 wrote to memory of 4656 4944 37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe 71 PID 4944 wrote to memory of 4656 4944 37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe 71 PID 4656 wrote to memory of 5040 4656 dllhost.exe 72 PID 4656 wrote to memory of 5040 4656 dllhost.exe 72 PID 4656 wrote to memory of 5040 4656 dllhost.exe 72 PID 4656 wrote to memory of 4428 4656 dllhost.exe 73 PID 4656 wrote to memory of 4428 4656 dllhost.exe 73 PID 4656 wrote to memory of 4428 4656 dllhost.exe 73 PID 4656 wrote to memory of 2136 4656 dllhost.exe 74 PID 4656 wrote to memory of 2136 4656 dllhost.exe 74 PID 4656 wrote to memory of 2136 4656 dllhost.exe 74 PID 4656 wrote to memory of 2324 4656 dllhost.exe 75 PID 4656 wrote to memory of 2324 4656 dllhost.exe 75 PID 4656 wrote to memory of 2324 4656 dllhost.exe 75 PID 4656 wrote to memory of 336 4656 dllhost.exe 76 PID 4656 wrote to memory of 336 4656 dllhost.exe 76 PID 4656 wrote to memory of 336 4656 dllhost.exe 76 PID 4656 wrote to memory of 5092 4656 dllhost.exe 77 PID 4656 wrote to memory of 5092 4656 dllhost.exe 77 PID 4656 wrote to memory of 5092 4656 dllhost.exe 77 PID 4656 wrote to memory of 2908 4656 dllhost.exe 89 PID 4656 wrote to memory of 2908 4656 dllhost.exe 89 PID 4656 wrote to memory of 2908 4656 dllhost.exe 89 PID 4656 wrote to memory of 868 4656 dllhost.exe 80 PID 4656 wrote to memory of 868 4656 dllhost.exe 80 PID 4656 wrote to memory of 868 4656 dllhost.exe 80 PID 4656 wrote to memory of 4308 4656 dllhost.exe 79 PID 4656 wrote to memory of 4308 4656 dllhost.exe 79 PID 4656 wrote to memory of 4308 4656 dllhost.exe 79 PID 4656 wrote to memory of 4756 4656 dllhost.exe 82 PID 4656 wrote to memory of 4756 4656 dllhost.exe 82 PID 4656 wrote to memory of 4756 4656 dllhost.exe 82 PID 4656 wrote to memory of 324 4656 dllhost.exe 86 PID 4656 wrote to memory of 324 4656 dllhost.exe 86 PID 4656 wrote to memory of 324 4656 dllhost.exe 86 PID 4656 wrote to memory of 3092 4656 dllhost.exe 84 PID 4656 wrote to memory of 3092 4656 dllhost.exe 84 PID 4656 wrote to memory of 3092 4656 dllhost.exe 84 PID 5040 wrote to memory of 2192 5040 cmd.exe 95 PID 5040 wrote to memory of 2192 5040 cmd.exe 95 PID 5040 wrote to memory of 2192 5040 cmd.exe 95 PID 2324 wrote to memory of 392 2324 cmd.exe 96 PID 2324 wrote to memory of 392 2324 cmd.exe 96 PID 2324 wrote to memory of 392 2324 cmd.exe 96 PID 868 wrote to memory of 4144 868 cmd.exe 97 PID 868 wrote to memory of 4144 868 cmd.exe 97 PID 868 wrote to memory of 4144 868 cmd.exe 97 PID 4428 wrote to memory of 4172 4428 cmd.exe 98 PID 4428 wrote to memory of 4172 4428 cmd.exe 98 PID 4428 wrote to memory of 4172 4428 cmd.exe 98 PID 4656 wrote to memory of 4016 4656 dllhost.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe"C:\Users\Admin\AppData\Local\Temp\37fd86fa51331f73653b36781bc3aa49ee4a274ab7e95a7b8a9a4baebf7482d7.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4944 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 1251 & powershell -Command Add-MpPreference -ExclusionPath "$ENV:USERPROFILE\Desktop" & powershell -Command Add-MpPreference -ExclusionPath "C:\ProgramData\Dllhost" & powershell -Command Add-MpPreference -ExclusionPath "C:\ProgramData\HostData"2⤵
- Suspicious use of WriteProcessMemory
PID:1696 -
C:\Windows\SysWOW64\chcp.comchcp 12513⤵PID:2784
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command Add-MpPreference -ExclusionPath "$ENV:USERPROFILE\Desktop"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3604
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command Add-MpPreference -ExclusionPath "C:\ProgramData\Dllhost"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1644
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C:\ProgramData\Dllhost\dllhost.exe"C:\ProgramData\Dllhost\dllhost.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4656 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "SecurityHealthSystray" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:5040 -
C:\Windows\SysWOW64\schtasks.exeSCHTASKS /CREATE /SC HOURLY /TN "SecurityHealthSystray" /TR "C:\ProgramData\Dllhost\dllhost.exe"4⤵
- Creates scheduled task(s)
PID:2192
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "WindowsDefender" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:4428 -
C:\Windows\SysWOW64\schtasks.exeSCHTASKS /CREATE /SC HOURLY /TN "WindowsDefender" /TR "C:\ProgramData\Dllhost\dllhost.exe"4⤵
- Creates scheduled task(s)
PID:4172
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "WmiPrvSE" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵PID:2136
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "AntiMalwareServiceExecutable" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:2324 -
C:\Windows\SysWOW64\schtasks.exeSCHTASKS /CREATE /SC HOURLY /TN "AntiMalwareServiceExecutable" /TR "C:\ProgramData\Dllhost\dllhost.exe"4⤵
- Creates scheduled task(s)
PID:392
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "dllhost" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵PID:336
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "MicrosoftEdgeUpd" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵PID:5092
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "WindowsDefenderServices\WindowsDefenderServicesService_bk2424" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵PID:4308
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "NvStray" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:868 -
C:\Windows\SysWOW64\schtasks.exeSCHTASKS /CREATE /SC HOURLY /TN "NvStray" /TR "C:\ProgramData\Dllhost\dllhost.exe"4⤵
- Creates scheduled task(s)
PID:4144
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "AntiMalwareSericeExecutable\AntiMalwareSericeExecutableService_bk4331" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵PID:4756
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "SettingSysHost\SettingSysHostService_bk6618" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵PID:3092
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "MicrosoftUpdateServices\MicrosoftUpdateServicesService_bk8393" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵PID:324
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c SCHTASKS /CREATE /SC HOURLY /TN "OneDriveService" /TR "C:\ProgramData\Dllhost\dllhost.exe"3⤵PID:2908
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c chcp 1251 & C:\ProgramData\Dllhost\winlogson.exe --config msi.bin --log off3⤵PID:4016
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C:\Windows\SysWOW64\chcp.comchcp 12514⤵PID:68
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c chcp 1251 & C:\ProgramData\Dllhost\winlogson.exe --config msi.bin --log off3⤵PID:612
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C:\Windows\SysWOW64\chcp.comchcp 12514⤵PID:4048
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c chcp 1251 & C:\ProgramData\Dllhost\winlogson.exe --config msi.bin --log off3⤵PID:4864
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C:\Windows\SysWOW64\chcp.comchcp 12514⤵PID:3980
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
892KB
MD57e998eeb0b57959dbbff4e2cff8f2525
SHA1f7b6f2a85bd93f11cd4e65832aca3d8f0c4ecbbb
SHA256a0c5897d048b579b59761ba271ff3d27f6ab37504e16a3ef23bd4e386828dd2c
SHA51217d83c5a9d511a2a350dbedf7c25f7b2444d0093b95d753d477ae1a201dc448c394b729e67656b0fec8730529acf63d5d42676cef66b29db6eb9a1caab77bc46
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Filesize
892KB
MD57e998eeb0b57959dbbff4e2cff8f2525
SHA1f7b6f2a85bd93f11cd4e65832aca3d8f0c4ecbbb
SHA256a0c5897d048b579b59761ba271ff3d27f6ab37504e16a3ef23bd4e386828dd2c
SHA51217d83c5a9d511a2a350dbedf7c25f7b2444d0093b95d753d477ae1a201dc448c394b729e67656b0fec8730529acf63d5d42676cef66b29db6eb9a1caab77bc46
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Filesize
497B
MD513fda2ab01b83a5130842a5bab3892d3
SHA16e18e4b467cde054a63a95d4dfc030f156ecd215
SHA25676973d42c8fceceab7ec85b3d01b218db92564993e93a9bea31c52aa73aeee9e
SHA512c51f9fd6e452fbeeedd4dfaba3c7c887e337f01e68abdd27d4032f8be85def7ef3cf0c77bf60e425b085b76c0539464c6b6e5e805a69397c5519e8ccf9fffccc
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Filesize
2KB
MD51c19c16e21c97ed42d5beabc93391fc5
SHA18ad83f8e0b3acf8dfbbf87931e41f0d664c4df68
SHA2561bcd97396c83babfe6c5068ba590d7a3f8b70e72955a9d1e4070648e404cbf05
SHA5127d18776d8f649b3d29c182ff03efc6cea8b527542ee55304980f24577aae8b64e37044407776e220984346c3998ace5f8853afa58c8b38407482a728e9495e0c
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Filesize
18KB
MD55ef1b7926b29ea4031d1564f6f1b94ff
SHA115e2a10801397c2a255b750ba8c9803a006e5664
SHA2564647af1cbf65e9dfcc58082fb6616523c71924bcffe4f3c721fe8ac4fd33654d
SHA51222b6c1e0eb66c29dbbd7bc6a49188ed4d29f29d5b4e35e25020eea4de1988e4e84eb1adc136ee69cb02014aad142173b27c63f51e3d2758632cf3c397bfe1906