Analysis
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max time kernel
150s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
24-05-2023 06:01
Static task
static1
Behavioral task
behavioral1
Sample
putty.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
putty.exe
Resource
win10v2004-20230220-en
General
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Target
putty.exe
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Size
157KB
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MD5
fb9a5aa7537e9a41eaaa1b5714330895
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SHA1
4ebf8ece21579fadd34288adf5a2b2140fd3ee8f
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SHA256
bdcf3c8b8f3f71c76e5a192bd9dbce2061379edb57eba0d41fdc69f9172a9d6b
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SHA512
2e8afe44d91d2f8de6da8220a34d9e1bbfe2a1fbd9b0ebbd04bc03f43dc1b133edff74bad9e5adcbe26bc7343505e9f39fd6555ede54409a66e7561fbf596da0
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SSDEEP
3072:WTTtS/P8TSeZNgDTakOihnjbiTRjEXQAuis1Jy///f/MD:EtTBZAjOGGRviec3fE
Malware Config
Extracted
bitrat
1.38
pradeepprabhu705.hopto.org:312
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communication_password
827ccb0eea8a706c4c34a16891f84e7b
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tor_process
tor
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
putty.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\putty = "\"C:\\Users\\Admin\\AppData\\Roaming\\putty.exe\"" putty.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
Processes:
putty.exepid process 2020 putty.exe 2020 putty.exe 2020 putty.exe 2020 putty.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
putty.exedescription pid process target process PID 820 set thread context of 2020 820 putty.exe putty.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exeputty.exepid process 268 powershell.exe 820 putty.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
putty.exepowershell.exeputty.exedescription pid process Token: SeDebugPrivilege 820 putty.exe Token: SeDebugPrivilege 268 powershell.exe Token: SeDebugPrivilege 2020 putty.exe Token: SeShutdownPrivilege 2020 putty.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
putty.exepid process 2020 putty.exe 2020 putty.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
putty.exedescription pid process target process PID 820 wrote to memory of 268 820 putty.exe powershell.exe PID 820 wrote to memory of 268 820 putty.exe powershell.exe PID 820 wrote to memory of 268 820 putty.exe powershell.exe PID 820 wrote to memory of 268 820 putty.exe powershell.exe PID 820 wrote to memory of 1636 820 putty.exe putty.exe PID 820 wrote to memory of 1636 820 putty.exe putty.exe PID 820 wrote to memory of 1636 820 putty.exe putty.exe PID 820 wrote to memory of 1636 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe PID 820 wrote to memory of 2020 820 putty.exe putty.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\putty.exe"C:\Users\Admin\AppData\Local\Temp\putty.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMQAyADAA2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\putty.exeC:\Users\Admin\AppData\Local\Temp\putty.exe purecrypter.exe2⤵
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C:\Users\Admin\AppData\Local\Temp\putty.exeC:\Users\Admin\AppData\Local\Temp\putty.exe purecrypter.exe2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/268-62-0x0000000002620000-0x0000000002660000-memory.dmpFilesize
256KB
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memory/268-63-0x0000000002620000-0x0000000002660000-memory.dmpFilesize
256KB
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memory/268-64-0x0000000002620000-0x0000000002660000-memory.dmpFilesize
256KB
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memory/268-65-0x0000000002620000-0x0000000002660000-memory.dmpFilesize
256KB
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memory/268-66-0x0000000002620000-0x0000000002660000-memory.dmpFilesize
256KB
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memory/820-54-0x0000000000200000-0x000000000022C000-memory.dmpFilesize
176KB
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memory/820-55-0x0000000004D90000-0x0000000004DD0000-memory.dmpFilesize
256KB
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memory/820-56-0x000000000F6C0000-0x000000000F972000-memory.dmpFilesize
2.7MB
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memory/820-57-0x00000000090D0000-0x00000000092A2000-memory.dmpFilesize
1.8MB
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memory/820-58-0x0000000000490000-0x0000000000522000-memory.dmpFilesize
584KB
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memory/820-59-0x0000000004D90000-0x0000000004DD0000-memory.dmpFilesize
256KB
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memory/2020-70-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-77-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-71-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-73-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-72-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-74-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-75-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-69-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-76-0x000000007EFDE000-0x000000007EFDF000-memory.dmpFilesize
4KB
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memory/2020-79-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-80-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-83-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-84-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-82-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-86-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB
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memory/2020-87-0x0000000000400000-0x00000000007CE000-memory.dmpFilesize
3.8MB