Analysis
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max time kernel
88s -
max time network
160s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
25-11-2022 05:41
Static task
static1
Behavioral task
behavioral1
Sample
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
Resource
win10v2004-20221111-en
General
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Target
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
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Size
5.5MB
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MD5
3389b0ae28574ebdb3ee468054ab8bdd
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SHA1
38f4733c794762ab13d0f1f1d55314ce95db27c6
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SHA256
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69
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SHA512
e317e8a81ac5a0cba42787c542d24daeef485970ff1389b4f2c8e70dd3d13aa1fd4957ecfe7916f084807f753c24bb1d7aef3cce600d9d96fb645dcc54be161e
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SSDEEP
98304:wJTPo1qdbRaMAPp2+32ooNgji1mpAHzpqGejFWvxjKte2CUn:mw/kS2ooVmg+
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "WinApp32.exe" a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe -
Disables RegEdit via registry modification 1 IoCs
Processes:
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Policies\system\DisableRegistryTools = "1" a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe -
Disables Task Manager via registry modification
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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows = "WinApp.exe" a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe -
Drops file in Windows directory 4 IoCs
Processes:
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exedescription ioc process File created C:\Windows\WinApp.exe a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe File opened for modification C:\Windows\WinApp.exe a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe File created C:\Windows\WinApp32.exe a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe File opened for modification C:\Windows\WinApp32.exe a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Kills process with taskkill 1 IoCs
Processes:
TASKKILL.exepid process 844 TASKKILL.exe -
Processes:
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\International\CpMRU\Factor = "20" a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\International\CpMRU a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\International\CpMRU\Enable = "1" a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\International\CpMRU\Size = "10" a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\International\CpMRU\InitHits = "100" a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
TASKKILL.exedescription pid process Token: SeDebugPrivilege 844 TASKKILL.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exepid process 1348 a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe 1348 a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe 1348 a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exedescription pid process target process PID 1348 wrote to memory of 844 1348 a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe TASKKILL.exe PID 1348 wrote to memory of 844 1348 a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe TASKKILL.exe PID 1348 wrote to memory of 844 1348 a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe TASKKILL.exe PID 1348 wrote to memory of 844 1348 a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe TASKKILL.exe -
System policy modification 1 TTPs 2 IoCs
Processes:
a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoViewOnDrive = "12" a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe"C:\Users\Admin\AppData\Local\Temp\a0d2eb068a2634f9f7f595106f1691fafe3a73771acc78f2e552be84abc7ef69.exe"1⤵
- Modifies WinLogon for persistence
- Disables RegEdit via registry modification
- Adds Run key to start application
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Windows\SysWOW64\TASKKILL.exeTASKKILL /F /IM explorer.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken