Analysis
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max time kernel
149s -
max time network
137s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
26/11/2022, 23:48
Behavioral task
behavioral1
Sample
c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
Resource
win7-20220901-en
General
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Target
c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe
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Size
577KB
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MD5
3620dd811026e8b6c28e7780be40fb98
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SHA1
bbed7ab4f72388398cfc561b878a6179bbfc59c7
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SHA256
c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d
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SHA512
e1844f56693665491079a02464722676251809821720eec530a6fd3fa2481631f4acb002ae832af1d149111dae9b271db5143d6655d5653b388546dea586fa42
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SSDEEP
12288:htsDO4UAN+AVoa+ueIG/8V9uQNSncmDij4bsSi5+R:qrN+AVoa+qG/K9uQNSncU4sycR
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Subsystem = "C:\\Program Files (x86)\\DHCP Subsystem\\dhcpss.exe" c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe File opened for modification C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4924 schtasks.exe 364 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe Token: SeDebugPrivilege 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3868 wrote to memory of 4924 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 81 PID 3868 wrote to memory of 4924 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 81 PID 3868 wrote to memory of 4924 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 81 PID 3868 wrote to memory of 364 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 83 PID 3868 wrote to memory of 364 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 83 PID 3868 wrote to memory of 364 3868 c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe"C:\Users\Admin\AppData\Local\Temp\c3237e897a6290571c6311cbc4fab1507ea2ad631342a1f2824f2980fb07d38d.exe"1⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3868 -
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDF58.tmp"2⤵
- Creates scheduled task(s)
PID:4924
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE14D.tmp"2⤵
- Creates scheduled task(s)
PID:364
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD53a73c4001d745adf4e70e4562531ffec
SHA1fb10145c878e931fb318fc7c51817cf7e6fae687
SHA2565f9514bf173f3f8403fe7f931e922629f839103d91bd73d77916561dcc13b019
SHA5120299413bc5094710d399f8a50253f4aa0a68cd14024da4713917b305bc6e57ecf7385846563bd16bdfab88671237df31c943b7587c3fcd7137820f5f07c68534
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Filesize
1KB
MD52f26d92c1eeead3896820e56ec46f6f1
SHA1d95533b61eed7d89e4ada56bc566d60e42ac1f61
SHA25699a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa
SHA5126c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892