Analysis
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max time kernel
136s -
max time network
140s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
18-05-2021 11:37
Static task
static1
Behavioral task
behavioral1
Sample
5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe
Resource
win7v20210408
General
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Target
5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe
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Size
88KB
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MD5
107a2fefad98ccbfe9e90b7d673af869
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SHA1
119484ee7a5a361cfb9de2542c044135a4cc33ca
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SHA256
5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e
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SHA512
59c6b106197d8c6a928422806e5dd921f1ac82fd033ccaccf7974e5b13ecebb34d37e4a130a8ab70fcd9730421121c31c23df60765f1ca97286f6f260129b7aa
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
OccultMasonry.exeOccultMasonry.exepid process 3632 OccultMasonry.exe 3564 OccultMasonry.exe -
Processes:
5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe -
Installs/modifies Browser Helper Object 2 TTPs
BHOs are DLL modules which act as plugins for Internet Explorer.
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Drops file in Program Files directory 4 IoCs
Processes:
OccultMasonry.exeOccultMasonry.exedescription ioc process File created C:\Program Files\ProtractAver\SartorialDeclivity.exe OccultMasonry.exe File created C:\Program Files\DeclivityGrandstand\SingeParchment.exe OccultMasonry.exe File opened for modification C:\Program Files\ProtractAver\SartorialDeclivity.exe OccultMasonry.exe File opened for modification C:\Program Files\DeclivityGrandstand\SingeParchment.exe OccultMasonry.exe -
Drops file in Windows directory 1 IoCs
Processes:
5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exedescription ioc process File created C:\Windows\SUGUZEFHWD.dll 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 46 IoCs
Processes:
regsvr32.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\TypeLib\ = "{472A988E-2192-5F11-F0C0-ED3419BB40AB}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB}\1.0\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei\ = "xunlei Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei.1\ = "xunlei Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei.1\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB}\1.0\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei\CLSID\ = "{D8D2F841-C4FC-4ADE-731A-56E6D1755624}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei\CurVer regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\InprocServer32\ = "C:\\Windows\\SUGUZEFHWD.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\ = "Ixunlei" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei.1\CLSID\ = "{D8D2F841-C4FC-4ADE-731A-56E6D1755624}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\TypeLib\ = "{472A988E-2192-5F11-F0C0-ED3419BB40AB}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\ProgID\ = "Thunder.xunlei.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\ = "Ixunlei" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\TypeLib\ = "{472A988E-2192-5F11-F0C0-ED3419BB40AB}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB}\1.0\0\win32\ = "C:\\Windows\\SUGUZEFHWD.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB}\1.0\HELPDIR\ = "C:\\Windows" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\VersionIndependentProgID\ = "Thunder.xunlei" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei\CurVer\ = "Thunder.xunlei.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{D8D2F841-C4FC-4ADE-731A-56E6D1755624}\ = "xunlei Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB}\1.0\ = "Thunder 1.0 Type Library" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{472A988E-2192-5F11-F0C0-ED3419BB40AB}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11D9AE74-3FC1-41D6-911B-F5F503BBD8FE}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Thunder.xunlei\CLSID regsvr32.exe -
Suspicious use of SetWindowsHookEx 9 IoCs
Processes:
5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exeOccultMasonry.exeOccultMasonry.exepid process 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe 3632 OccultMasonry.exe 3632 OccultMasonry.exe 3564 OccultMasonry.exe 3564 OccultMasonry.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exedescription pid process target process PID 1892 wrote to memory of 3124 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe regsvr32.exe PID 1892 wrote to memory of 3124 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe regsvr32.exe PID 1892 wrote to memory of 3124 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe regsvr32.exe PID 1892 wrote to memory of 3632 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe OccultMasonry.exe PID 1892 wrote to memory of 3632 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe OccultMasonry.exe PID 1892 wrote to memory of 3632 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe OccultMasonry.exe PID 1892 wrote to memory of 3564 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe OccultMasonry.exe PID 1892 wrote to memory of 3564 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe OccultMasonry.exe PID 1892 wrote to memory of 3564 1892 5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe OccultMasonry.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe"C:\Users\Admin\AppData\Local\Temp\5999187654ca53d596fa2b82010badf37584474d15b6ed176f14e330a1b9b25e.exe"1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exeregsvr32.exe /s "C:\Windows\SUGUZEFHWD.dll"2⤵
- Modifies registry class
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C:\Users\Admin\AppData\Local\Temp\OccultMasonry.exe"C:\Users\Admin\AppData\Local\Temp\OccultMasonry.exe"2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
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C:\Users\Admin\AppData\Local\Temp\OccultMasonry.exeC:\Users\Admin\AppData\Local\Temp\OccultMasonry.exe2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
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\OccultMasonry.exeMD5
619b4cf619eaebe531bb252e99cdd23b
SHA175131437e0039afc65aca67a7a54885b58b8054e
SHA256cb6686fe656cba89761f291c52a77f9f5d9c50fa20d277d4e2e1bfa122e02402
SHA51240a84a0a5b9246cff882a12e76b1e014fb9b6f018a637402f74bfd24155dd64b7a1ff519907a1e24b64ca1382a191adf6d29499d8f340426cb6876cd2fe3e6d3
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C:\Users\Admin\AppData\Local\Temp\OccultMasonry.exeMD5
619b4cf619eaebe531bb252e99cdd23b
SHA175131437e0039afc65aca67a7a54885b58b8054e
SHA256cb6686fe656cba89761f291c52a77f9f5d9c50fa20d277d4e2e1bfa122e02402
SHA51240a84a0a5b9246cff882a12e76b1e014fb9b6f018a637402f74bfd24155dd64b7a1ff519907a1e24b64ca1382a191adf6d29499d8f340426cb6876cd2fe3e6d3
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C:\Users\Admin\AppData\Local\Temp\OccultMasonry.exeMD5
619b4cf619eaebe531bb252e99cdd23b
SHA175131437e0039afc65aca67a7a54885b58b8054e
SHA256cb6686fe656cba89761f291c52a77f9f5d9c50fa20d277d4e2e1bfa122e02402
SHA51240a84a0a5b9246cff882a12e76b1e014fb9b6f018a637402f74bfd24155dd64b7a1ff519907a1e24b64ca1382a191adf6d29499d8f340426cb6876cd2fe3e6d3
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C:\Windows\SUGUZEFHWD.dllMD5
a3716a7e6a87a2b55dacaf863e3cbc6f
SHA1826f9bf60c15c269c53e64dbf12484c6c199d892
SHA256bb47f9c56664bf852c94ebcfe11da19f590eccae073fa35cb54be6171f2ef09c
SHA5122db1d232eefef751c702d1e8aedea02d6f6729f4c928ec88185ebd2af34bd8d4f574741f05bc7d7582f2ec5ff63a08fd6bea1cfd09f25151f0d662af24055a67
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memory/3124-114-0x0000000000000000-mapping.dmp
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memory/3564-118-0x0000000000000000-mapping.dmp
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memory/3632-116-0x0000000000000000-mapping.dmp