Analysis
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max time kernel
150s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
31-10-2022 11:36
Static task
static1
Behavioral task
behavioral1
Sample
PO CF004303.js
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
PO CF004303.js
Resource
win10v2004-20220812-en
General
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Target
PO CF004303.js
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Size
52KB
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MD5
4a70919d125ea1c01065710550d3cf6a
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SHA1
03c636a5603d3781f25248ed761316af876f0538
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SHA256
87c02c61d4cf74ebabc28dab3d1f91593a87eebd31f97d0913967bf975f6d62b
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SHA512
28d5d3dc078c317eb21c7685a8d6b00c86ea5970651a675e158db5e28f4ddb7f7a4a6979d7cb32ca3c29a430b28276195f9213a3852f51cba5a639301b2afdb3
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SSDEEP
768:pMgbzZ2OkxKvwNi/3HgFBgzZhnooQT1DLsjg7EjDBNSamcnZMqX3LaWJIo/K:jsKdA3gzw31DygKSamQjnWWl/K
Malware Config
Extracted
wshrat
http://37.0.14.195:1604
Signatures
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Blocklisted process makes network request 37 IoCs
flow pid Process 9 1404 wscript.exe 10 844 wscript.exe 11 1988 wscript.exe 12 1988 wscript.exe 14 1988 wscript.exe 17 1988 wscript.exe 19 1988 wscript.exe 21 1988 wscript.exe 24 1404 wscript.exe 26 844 wscript.exe 28 1988 wscript.exe 31 1988 wscript.exe 33 1988 wscript.exe 36 1988 wscript.exe 38 1988 wscript.exe 40 844 wscript.exe 41 1404 wscript.exe 44 1988 wscript.exe 47 1988 wscript.exe 48 1988 wscript.exe 50 1988 wscript.exe 55 1988 wscript.exe 58 1988 wscript.exe 60 844 wscript.exe 61 1404 wscript.exe 63 1988 wscript.exe 67 1988 wscript.exe 68 1988 wscript.exe 70 1988 wscript.exe 75 1988 wscript.exe 76 1988 wscript.exe 79 1404 wscript.exe 80 844 wscript.exe 82 1988 wscript.exe 84 1988 wscript.exe 86 1988 wscript.exe 88 1988 wscript.exe -
Drops startup file 5 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO CF004303.js wscript.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\YYELvrJUmX.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\YYELvrJUmX.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\YYELvrJUmX.js wscript.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO CF004303.js wscript.exe -
Adds Run key to start application 2 TTPs 8 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\PO CF004303 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\PO CF004303.js\"" wscript.exe Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PO CF004303 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\PO CF004303.js\"" wscript.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\PO CF004303 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\PO CF004303.js\"" wscript.exe Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PO CF004303 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\PO CF004303.js\"" wscript.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Script User-Agent 27 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 11 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 17 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 21 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 33 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 36 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 47 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 55 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 63 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 70 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 82 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 38 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 75 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 76 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 14 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 19 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 28 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 58 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 84 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 44 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 48 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 68 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 50 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 67 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 12 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 31 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 86 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript HTTP User-Agent header 88 WSHRAT|94A7BB46|RYNKSFQE|Admin|Microsoft Windows 7 Ultimate |plus|nan-av|false - 31/10/2022|JavaScript -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2012 wrote to memory of 844 2012 wscript.exe 27 PID 2012 wrote to memory of 844 2012 wscript.exe 27 PID 2012 wrote to memory of 844 2012 wscript.exe 27 PID 2012 wrote to memory of 1988 2012 wscript.exe 28 PID 2012 wrote to memory of 1988 2012 wscript.exe 28 PID 2012 wrote to memory of 1988 2012 wscript.exe 28 PID 1988 wrote to memory of 1404 1988 wscript.exe 30 PID 1988 wrote to memory of 1404 1988 wscript.exe 30 PID 1988 wrote to memory of 1404 1988 wscript.exe 30
Processes
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C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\PO CF004303.js"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Windows\System32\wscript.exe"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\YYELvrJUmX.js"2⤵
- Blocklisted process makes network request
- Drops startup file
PID:844
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C:\Windows\System32\wscript.exe"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\PO CF004303.js"2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1988 -
C:\Windows\System32\wscript.exe"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\YYELvrJUmX.js"3⤵
- Blocklisted process makes network request
- Drops startup file
PID:1404
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
52KB
MD54a70919d125ea1c01065710550d3cf6a
SHA103c636a5603d3781f25248ed761316af876f0538
SHA25687c02c61d4cf74ebabc28dab3d1f91593a87eebd31f97d0913967bf975f6d62b
SHA51228d5d3dc078c317eb21c7685a8d6b00c86ea5970651a675e158db5e28f4ddb7f7a4a6979d7cb32ca3c29a430b28276195f9213a3852f51cba5a639301b2afdb3
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Filesize
10KB
MD58347dbb77c8799b4c7cad9928702f1d7
SHA1e87231a42abb961ec0ef459ddee48331a90275d5
SHA25687d9d47c5591a8d90f1fd3ebc421135dfad6ef97a7b454fb7d034b0f948964df
SHA512a0ebdeb58a5446fc3696090f69043be6244af6cdada71d77380120e9f23ce4bafae2e105f1df6c0d502f419a5718d3498a9329e417c27e109c85ba04c4adc19f
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Filesize
52KB
MD54a70919d125ea1c01065710550d3cf6a
SHA103c636a5603d3781f25248ed761316af876f0538
SHA25687c02c61d4cf74ebabc28dab3d1f91593a87eebd31f97d0913967bf975f6d62b
SHA51228d5d3dc078c317eb21c7685a8d6b00c86ea5970651a675e158db5e28f4ddb7f7a4a6979d7cb32ca3c29a430b28276195f9213a3852f51cba5a639301b2afdb3
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Filesize
10KB
MD58347dbb77c8799b4c7cad9928702f1d7
SHA1e87231a42abb961ec0ef459ddee48331a90275d5
SHA25687d9d47c5591a8d90f1fd3ebc421135dfad6ef97a7b454fb7d034b0f948964df
SHA512a0ebdeb58a5446fc3696090f69043be6244af6cdada71d77380120e9f23ce4bafae2e105f1df6c0d502f419a5718d3498a9329e417c27e109c85ba04c4adc19f
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Filesize
10KB
MD58347dbb77c8799b4c7cad9928702f1d7
SHA1e87231a42abb961ec0ef459ddee48331a90275d5
SHA25687d9d47c5591a8d90f1fd3ebc421135dfad6ef97a7b454fb7d034b0f948964df
SHA512a0ebdeb58a5446fc3696090f69043be6244af6cdada71d77380120e9f23ce4bafae2e105f1df6c0d502f419a5718d3498a9329e417c27e109c85ba04c4adc19f