Analysis
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max time kernel
151s -
max time network
151s -
platform
windows7_x64 -
resource
win7-en -
submitted
12-09-2021 19:04
Static task
static1
Behavioral task
behavioral1
Sample
AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe
Resource
win7-en
0 signatures
0 seconds
General
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Target
AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe
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Size
4.9MB
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MD5
4d9350a29c7677374fbb8bc2e96a77f3
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SHA1
1fd63c7af6b2397d2f6616935aafef394f2394ed
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SHA256
af01ec61317d91bc4ce4b70b972b6a5dd29ddcc18999a937d298d7de8a0cf7af
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SHA512
7b69647225ef9d6d38389cc42a680946b85fc097d8681f715a6d0064dd205e3b743c42af163566071bab3f70b71e89a6e9629f540fd3ee1f5be8b5253876c7f0
Malware Config
Signatures
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Executes dropped EXE 4 IoCs
pid Process 1324 rfusclient.exe 1368 rutserv.exe 756 rutserv.exe 664 rfusclient.exe -
Loads dropped DLL 6 IoCs
pid Process 2004 cmd.exe 1324 rfusclient.exe 1324 rfusclient.exe 1324 rfusclient.exe 1324 rfusclient.exe 756 rutserv.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 1368 rutserv.exe 1368 rutserv.exe 1368 rutserv.exe 756 rutserv.exe 756 rutserv.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1368 rutserv.exe Token: SeTakeOwnershipPrivilege 756 rutserv.exe Token: SeTcbPrivilege 756 rutserv.exe Token: SeTcbPrivilege 756 rutserv.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 664 rfusclient.exe 664 rfusclient.exe 664 rfusclient.exe -
Suspicious use of SendNotifyMessage 3 IoCs
pid Process 664 rfusclient.exe 664 rfusclient.exe 664 rfusclient.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1368 rutserv.exe 756 rutserv.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 1080 wrote to memory of 2004 1080 AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe 26 PID 1080 wrote to memory of 2004 1080 AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe 26 PID 1080 wrote to memory of 2004 1080 AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe 26 PID 1080 wrote to memory of 2004 1080 AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe 26 PID 1080 wrote to memory of 2004 1080 AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe 26 PID 1080 wrote to memory of 2004 1080 AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe 26 PID 1080 wrote to memory of 2004 1080 AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe 26 PID 2004 wrote to memory of 1324 2004 cmd.exe 28 PID 2004 wrote to memory of 1324 2004 cmd.exe 28 PID 2004 wrote to memory of 1324 2004 cmd.exe 28 PID 2004 wrote to memory of 1324 2004 cmd.exe 28 PID 1324 wrote to memory of 1368 1324 rfusclient.exe 29 PID 1324 wrote to memory of 1368 1324 rfusclient.exe 29 PID 1324 wrote to memory of 1368 1324 rfusclient.exe 29 PID 1324 wrote to memory of 1368 1324 rfusclient.exe 29 PID 756 wrote to memory of 664 756 rutserv.exe 35 PID 756 wrote to memory of 664 756 rutserv.exe 35 PID 756 wrote to memory of 664 756 rutserv.exe 35 PID 756 wrote to memory of 664 756 rutserv.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe"C:\Users\Admin\AppData\Local\Temp\AF01EC61317D91BC4CE4B70B972B6A5DD29DDCC18999A.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1080 -
C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\install.cmd" "2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2004 -
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\rfusclient.exerfusclient.exe -run_agent3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1324 -
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\rutserv.exe"C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\rutserv.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1368 -
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\rutserv.exeC:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\rutserv.exe -second5⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:756 -
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\rfusclient.exeC:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\rfusclient.exe /tray /user6⤵
- Executes dropped EXE
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:664
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