Analysis
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max time kernel
177s -
max time network
186s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
25-11-2022 06:53
Static task
static1
Behavioral task
behavioral1
Sample
e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exe
Resource
win10v2004-20220812-en
General
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Target
e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exe
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Size
536KB
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MD5
921e56fed884e57506cd29b86c3d81f8
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SHA1
e0e3b86a4b71e3cac9bcbadc4fcc49e59f269a7b
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SHA256
e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb
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SHA512
ace17d8fc4f99ba0a072da33d3a34c15af548cb9760cb450ec3dcc42357063873418b3b0f971d4bcc3e0663ffa79025ac04ae8734a7b92d23ca6e4c0f56f96bd
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SSDEEP
12288:H6gjvSVFeqHcWkqW1O2hoMllQoi0a18D3nS7ed33:HHyG5ZoYaAS7ed3
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
System.exepid process 4932 System.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exe -
Drops startup file 2 IoCs
Processes:
System.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\301b5fcf8ce2fab8868e80b6c1f912fe.exe System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\301b5fcf8ce2fab8868e80b6c1f912fe.exe System.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
System.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\301b5fcf8ce2fab8868e80b6c1f912fe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." System.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\301b5fcf8ce2fab8868e80b6c1f912fe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." System.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 23 IoCs
Processes:
System.exepid process 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe 4932 System.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
System.exedescription pid process Token: SeDebugPrivilege 4932 System.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exeSystem.exedescription pid process target process PID 2288 wrote to memory of 4932 2288 e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exe System.exe PID 2288 wrote to memory of 4932 2288 e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exe System.exe PID 2288 wrote to memory of 4932 2288 e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exe System.exe PID 4932 wrote to memory of 1324 4932 System.exe netsh.exe PID 4932 wrote to memory of 1324 4932 System.exe netsh.exe PID 4932 wrote to memory of 1324 4932 System.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exe"C:\Users\Admin\AppData\Local\Temp\e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\System.exe"C:\Users\Admin\AppData\Local\Temp\System.exe"2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System.exe" "System.exe" ENABLE3⤵
- Modifies Windows Firewall
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\System.exeFilesize
536KB
MD5921e56fed884e57506cd29b86c3d81f8
SHA1e0e3b86a4b71e3cac9bcbadc4fcc49e59f269a7b
SHA256e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb
SHA512ace17d8fc4f99ba0a072da33d3a34c15af548cb9760cb450ec3dcc42357063873418b3b0f971d4bcc3e0663ffa79025ac04ae8734a7b92d23ca6e4c0f56f96bd
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C:\Users\Admin\AppData\Local\Temp\System.exeFilesize
536KB
MD5921e56fed884e57506cd29b86c3d81f8
SHA1e0e3b86a4b71e3cac9bcbadc4fcc49e59f269a7b
SHA256e3ec2cf9130b065f9f8a79b81b06e9670d99e19f2125b4258625352d26781beb
SHA512ace17d8fc4f99ba0a072da33d3a34c15af548cb9760cb450ec3dcc42357063873418b3b0f971d4bcc3e0663ffa79025ac04ae8734a7b92d23ca6e4c0f56f96bd
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memory/1324-138-0x0000000000000000-mapping.dmp
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memory/2288-132-0x0000000074E40000-0x00000000753F1000-memory.dmpFilesize
5.7MB
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memory/2288-136-0x0000000074E40000-0x00000000753F1000-memory.dmpFilesize
5.7MB
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memory/4932-133-0x0000000000000000-mapping.dmp
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memory/4932-137-0x0000000074E40000-0x00000000753F1000-memory.dmpFilesize
5.7MB
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memory/4932-139-0x0000000074E40000-0x00000000753F1000-memory.dmpFilesize
5.7MB