Analysis
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max time kernel
143s -
max time network
143s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
26-03-2021 17:29
Behavioral task
behavioral1
Sample
008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe
Resource
win10v20201028
General
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Target
008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe
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Size
1.9MB
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MD5
d86f451bbff804e59a549f9fb33d6e3f
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SHA1
3cb0cb07cc2542f1d98060adccda726ea865db98
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SHA256
008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549
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SHA512
c86ad7e1d5c445d4de9866faab578b2eb04f72ffef4fac380b7164003471b4b48b09772e735ea15205e2ab4a1f4d194d188cdeb12c7199d0824ddaba393dcaa2
Malware Config
Signatures
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Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\MsimeReceiver\Method cryptone C:\Users\Admin\AppData\Roaming\MsimeReceiver\Method cryptone -
Executes dropped EXE 1 IoCs
Processes:
Methodpid process 776 Method -
Modifies extensions of user files 14 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
Methoddescription ioc process File renamed C:\Users\Admin\Pictures\BlockTest.tiff => C:\Users\Admin\Pictures\BlockTest.tiff.phoenix Method File opened for modification C:\Users\Admin\Pictures\ConfirmInstall.crw.phoenix Method File opened for modification C:\Users\Admin\Pictures\GroupReceive.crw.phoenix Method File renamed C:\Users\Admin\Pictures\SplitUnregister.raw => C:\Users\Admin\Pictures\SplitUnregister.raw.phoenix Method File renamed C:\Users\Admin\Pictures\ConfirmInstall.crw => C:\Users\Admin\Pictures\ConfirmInstall.crw.phoenix Method File opened for modification C:\Users\Admin\Pictures\ExportRestore.tif.phoenix Method File opened for modification C:\Users\Admin\Pictures\BlockTest.tiff.phoenix Method File opened for modification C:\Users\Admin\Pictures\EditRevoke.tiff.phoenix Method File renamed C:\Users\Admin\Pictures\GroupReceive.crw => C:\Users\Admin\Pictures\GroupReceive.crw.phoenix Method File opened for modification C:\Users\Admin\Pictures\SplitUnregister.raw.phoenix Method File renamed C:\Users\Admin\Pictures\EditRevoke.tiff => C:\Users\Admin\Pictures\EditRevoke.tiff.phoenix Method File renamed C:\Users\Admin\Pictures\ExportRestore.tif => C:\Users\Admin\Pictures\ExportRestore.tif.phoenix Method File renamed C:\Users\Admin\Pictures\RemoveInstall.tiff => C:\Users\Admin\Pictures\RemoveInstall.tiff.phoenix Method File opened for modification C:\Users\Admin\Pictures\RemoveInstall.tiff.phoenix Method -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exeMethodcmd.execmd.exedescription pid process target process PID 3888 wrote to memory of 776 3888 008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe Method PID 3888 wrote to memory of 776 3888 008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe Method PID 776 wrote to memory of 940 776 Method cmd.exe PID 776 wrote to memory of 940 776 Method cmd.exe PID 3888 wrote to memory of 752 3888 008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe cmd.exe PID 3888 wrote to memory of 752 3888 008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe cmd.exe PID 940 wrote to memory of 4060 940 cmd.exe waitfor.exe PID 940 wrote to memory of 4060 940 cmd.exe waitfor.exe PID 752 wrote to memory of 4064 752 cmd.exe waitfor.exe PID 752 wrote to memory of 4064 752 cmd.exe waitfor.exe PID 940 wrote to memory of 1352 940 cmd.exe attrib.exe PID 940 wrote to memory of 1352 940 cmd.exe attrib.exe PID 752 wrote to memory of 1120 752 cmd.exe attrib.exe PID 752 wrote to memory of 1120 752 cmd.exe attrib.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 1352 attrib.exe 1120 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe"C:\Users\Admin\AppData\Local\Temp\008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\MsimeReceiver\MethodC:\Users\Admin\AppData\Roaming\MsimeReceiver\Method /go2⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\cmd.execmd /c waitfor /t 10 pause /d y & attrib -h "C:\Users\Admin\AppData\Roaming\MsimeReceiver\Method" & del "C:\Users\Admin\AppData\Roaming\MsimeReceiver\Method" & rd "C:\Users\Admin\AppData\Roaming\MsimeReceiver\"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\waitfor.exewaitfor /t 10 pause /d y4⤵
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C:\Windows\system32\attrib.exeattrib -h "C:\Users\Admin\AppData\Roaming\MsimeReceiver\Method"4⤵
- Views/modifies file attributes
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C:\Windows\SYSTEM32\cmd.execmd /c waitfor /t 10 pause /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe" & del "C:\Users\Admin\AppData\Local\Temp\008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe" & rd "C:\Users\Admin\AppData\Local\Temp\"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\waitfor.exewaitfor /t 10 pause /d y3⤵
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C:\Windows\system32\attrib.exeattrib -h "C:\Users\Admin\AppData\Local\Temp\008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549.exe"3⤵
- Views/modifies file attributes
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\MsimeReceiver\MethodMD5
d86f451bbff804e59a549f9fb33d6e3f
SHA13cb0cb07cc2542f1d98060adccda726ea865db98
SHA256008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549
SHA512c86ad7e1d5c445d4de9866faab578b2eb04f72ffef4fac380b7164003471b4b48b09772e735ea15205e2ab4a1f4d194d188cdeb12c7199d0824ddaba393dcaa2
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C:\Users\Admin\AppData\Roaming\MsimeReceiver\MethodMD5
d86f451bbff804e59a549f9fb33d6e3f
SHA13cb0cb07cc2542f1d98060adccda726ea865db98
SHA256008ec79765325200361d9c93ac35edd430f8b17894ff843268caa5acd6224549
SHA512c86ad7e1d5c445d4de9866faab578b2eb04f72ffef4fac380b7164003471b4b48b09772e735ea15205e2ab4a1f4d194d188cdeb12c7199d0824ddaba393dcaa2
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memory/752-8-0x0000000000000000-mapping.dmp
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memory/776-2-0x0000000000000000-mapping.dmp
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memory/940-7-0x0000000000000000-mapping.dmp
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memory/1120-12-0x0000000000000000-mapping.dmp
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memory/1352-11-0x0000000000000000-mapping.dmp
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memory/3888-4-0x0000000002160000-0x0000000002320000-memory.dmpFilesize
1.8MB
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memory/4060-9-0x0000000000000000-mapping.dmp
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memory/4064-10-0x0000000000000000-mapping.dmp