Analysis
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max time kernel
135s -
max time network
171s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
08-11-2022 21:05
Static task
static1
Behavioral task
behavioral1
Sample
e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe
Resource
win10v2004-20220812-en
General
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Target
e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe
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Size
48KB
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MD5
0bfe6357cc37d49ee87637c5de9930c0
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SHA1
6dc3a08ca27700a7c61a0066bf9238830c0f47af
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SHA256
e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82
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SHA512
c793d477410f1b54ca3c8daede9bd9965b3b69f1cfa3cff1fb1ea76cb5daf6ba6074acc1a31ddab4dc6c1d15b34f9c0e10e1d5c84a10b9c829344de84f7cc715
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SSDEEP
768:Dz+0imCW6OpcwbS+3qyRTc7fFAHA6vwv16aV51QaOOQdlxv7Qeqg+xN0OaEza0iI:/+0jzcoT+Cz+jBza0iI
Malware Config
Signatures
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Possible privilege escalation attempt 2 IoCs
Processes:
takeown.exeicacls.exepid process 2792 takeown.exe 2176 icacls.exe -
Modifies file permissions 1 TTPs 2 IoCs
Processes:
takeown.exeicacls.exepid process 2792 takeown.exe 2176 icacls.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exedescription ioc process Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\sgMFf = "c:\\windows\\system32\\rebl.exe" e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe -
Drops file in System32 directory 2 IoCs
Processes:
e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exedescription ioc process File created \??\c:\windows\SysWOW64\rebl.exe e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe File opened for modification \??\c:\windows\SysWOW64\rebl.exe e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exepid process 4120 e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exedescription pid process target process PID 4120 wrote to memory of 2792 4120 e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe takeown.exe PID 4120 wrote to memory of 2792 4120 e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe takeown.exe PID 4120 wrote to memory of 2792 4120 e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe takeown.exe PID 4120 wrote to memory of 2176 4120 e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe icacls.exe PID 4120 wrote to memory of 2176 4120 e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe icacls.exe PID 4120 wrote to memory of 2176 4120 e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe icacls.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe"C:\Users\Admin\AppData\Local\Temp\e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82.exe"1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\takeown.exeC:\Windows\system32\takeown.exe /f "c:\windows\system32\rebl.exe"2⤵
- Possible privilege escalation attempt
- Modifies file permissions
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C:\Windows\SysWOW64\icacls.exeC:\Windows\system32\icacls.exe "c:\windows\system32\rebl.exe" /grant Users:F2⤵
- Possible privilege escalation attempt
- Modifies file permissions
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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\??\c:\windows\SysWOW64\rebl.exeFilesize
48KB
MD50bfe6357cc37d49ee87637c5de9930c0
SHA16dc3a08ca27700a7c61a0066bf9238830c0f47af
SHA256e7fd859c5301c08d4049b03f9b39782c02533aa88daa6d9d925c2950af38ca82
SHA512c793d477410f1b54ca3c8daede9bd9965b3b69f1cfa3cff1fb1ea76cb5daf6ba6074acc1a31ddab4dc6c1d15b34f9c0e10e1d5c84a10b9c829344de84f7cc715
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memory/2176-138-0x0000000000000000-mapping.dmp
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memory/2792-137-0x0000000000000000-mapping.dmp