Analysis
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max time kernel
49s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
27-01-2023 07:24
Static task
static1
Behavioral task
behavioral1
Sample
23ee744fa24aaada6ab0a81166c2f5466d29d502.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
23ee744fa24aaada6ab0a81166c2f5466d29d502.exe
Resource
win10v2004-20221111-en
General
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Target
23ee744fa24aaada6ab0a81166c2f5466d29d502.exe
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Size
477KB
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MD5
447f1d5a645314beb0b1d6b0f2f5119f
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SHA1
23ee744fa24aaada6ab0a81166c2f5466d29d502
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SHA256
850f818aca36188fff35a492275cd63ba81f6e48263faa669fb5e192165f2f92
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SHA512
2a4ed5f9a933ef0330c81672c17623143ee0c3693d6c56c85632c0bac2b7a8fb049bae0af904a1bd2a16db8ac338d78d0928e0edc7f5d866170d25c19407e752
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SSDEEP
3072:N36LY3qIwBzFyIR+DSbhsR2OsHas+8yqB1LuiCx8V8rIiJzQvstptE8z0N:N36hWsHtlLv8EiFES0
Malware Config
Signatures
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Detect PureCrypter injector 1 IoCs
Processes:
resource yara_rule behavioral1/memory/1056-56-0x0000000006000000-0x0000000006264000-memory.dmp family_purecrypter -
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
23ee744fa24aaada6ab0a81166c2f5466d29d502.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe Key opened \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe Key opened \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
23ee744fa24aaada6ab0a81166c2f5466d29d502.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\Sfrdma = "\"C:\\Users\\Admin\\AppData\\Roaming\\Cffvs\\Sfrdma.exe\"" 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 6 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
23ee744fa24aaada6ab0a81166c2f5466d29d502.exedescription pid process target process PID 1056 set thread context of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Gathers network information 2 TTPs 2 IoCs
Uses commandline utility to view network configuration.
Processes:
ipconfig.exeipconfig.exepid process 1372 ipconfig.exe 1844 ipconfig.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
powershell.exepid process 1800 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
23ee744fa24aaada6ab0a81166c2f5466d29d502.exepowershell.exe23ee744fa24aaada6ab0a81166c2f5466d29d502.exedescription pid process Token: SeDebugPrivilege 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe Token: SeDebugPrivilege 1800 powershell.exe Token: SeDebugPrivilege 1680 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
23ee744fa24aaada6ab0a81166c2f5466d29d502.exepid process 1680 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe -
Suspicious use of WriteProcessMemory 29 IoCs
Processes:
23ee744fa24aaada6ab0a81166c2f5466d29d502.execmd.execmd.exedescription pid process target process PID 1056 wrote to memory of 268 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe cmd.exe PID 1056 wrote to memory of 268 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe cmd.exe PID 1056 wrote to memory of 268 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe cmd.exe PID 1056 wrote to memory of 268 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe cmd.exe PID 268 wrote to memory of 1372 268 cmd.exe ipconfig.exe PID 268 wrote to memory of 1372 268 cmd.exe ipconfig.exe PID 268 wrote to memory of 1372 268 cmd.exe ipconfig.exe PID 268 wrote to memory of 1372 268 cmd.exe ipconfig.exe PID 1056 wrote to memory of 1800 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe powershell.exe PID 1056 wrote to memory of 1800 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe powershell.exe PID 1056 wrote to memory of 1800 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe powershell.exe PID 1056 wrote to memory of 1800 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe powershell.exe PID 1056 wrote to memory of 552 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe cmd.exe PID 1056 wrote to memory of 552 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe cmd.exe PID 1056 wrote to memory of 552 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe cmd.exe PID 1056 wrote to memory of 552 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe cmd.exe PID 552 wrote to memory of 1844 552 cmd.exe ipconfig.exe PID 552 wrote to memory of 1844 552 cmd.exe ipconfig.exe PID 552 wrote to memory of 1844 552 cmd.exe ipconfig.exe PID 552 wrote to memory of 1844 552 cmd.exe ipconfig.exe PID 1056 wrote to memory of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe PID 1056 wrote to memory of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe PID 1056 wrote to memory of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe PID 1056 wrote to memory of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe PID 1056 wrote to memory of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe PID 1056 wrote to memory of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe PID 1056 wrote to memory of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe PID 1056 wrote to memory of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe PID 1056 wrote to memory of 1680 1056 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe -
outlook_office_path 1 IoCs
Processes:
23ee744fa24aaada6ab0a81166c2f5466d29d502.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe -
outlook_win_path 1 IoCs
Processes:
23ee744fa24aaada6ab0a81166c2f5466d29d502.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 23ee744fa24aaada6ab0a81166c2f5466d29d502.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\23ee744fa24aaada6ab0a81166c2f5466d29d502.exe"C:\Users\Admin\AppData\Local\Temp\23ee744fa24aaada6ab0a81166c2f5466d29d502.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1056 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c ipconfig/release2⤵
- Suspicious use of WriteProcessMemory
PID:268 -
C:\Windows\SysWOW64\ipconfig.exeipconfig /release3⤵
- Gathers network information
PID:1372
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1800
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c ipconfig/renew2⤵
- Suspicious use of WriteProcessMemory
PID:552 -
C:\Windows\SysWOW64\ipconfig.exeipconfig /renew3⤵
- Gathers network information
PID:1844
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C:\Users\Admin\AppData\Local\Temp\23ee744fa24aaada6ab0a81166c2f5466d29d502.exeC:\Users\Admin\AppData\Local\Temp\23ee744fa24aaada6ab0a81166c2f5466d29d502.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1680
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