Analysis
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max time kernel
151s -
max time network
125s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
13-05-2021 12:56
Static task
static1
Behavioral task
behavioral1
Sample
cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe
Resource
win10v20210408
General
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Target
cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe
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Size
352KB
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MD5
dd21a3a58b5142e8a7de2ef73066f309
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SHA1
f91f60a05764bc1739f26701c07a0486eaf94308
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SHA256
cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670
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SHA512
9314f6ea0c08c910c05380234709d1722652725aa8178be1213753c73227d2dfc8c54aba3cd5f45890ed91665b8d4c0c733062e231047989ca8dc9e8f8b8ab80
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
Processes:
fltMcont.exe~57D0.tmpmounKEYs.exepid process 1896 fltMcont.exe 1784 ~57D0.tmp 1224 mounKEYs.exe -
Loads dropped DLL 3 IoCs
Processes:
cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exefltMcont.exepid process 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe 1896 fltMcont.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\autodmin = "C:\\Users\\Admin\\AppData\\Roaming\\ocseperf\\fltMcont.exe" cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe -
Drops file in System32 directory 1 IoCs
Processes:
cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exedescription ioc process File created C:\Windows\SysWOW64\mounKEYs.exe cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe -
Drops file in Windows directory 1 IoCs
Processes:
WINWORD.EXEdescription ioc process File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Office loads VBA resources, possible macro or embedded object present
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Processes:
WINWORD.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote WINWORD.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" WINWORD.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" WINWORD.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel WINWORD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
WINWORD.EXEpid process 976 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
fltMcont.exeExplorer.EXEmounKEYs.exepid process 1896 fltMcont.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE 1224 mounKEYs.exe 1268 Explorer.EXE -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Explorer.EXEpid process 1268 Explorer.EXE -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
Explorer.EXEdescription pid process Token: SeShutdownPrivilege 1268 Explorer.EXE Token: SeShutdownPrivilege 1268 Explorer.EXE Token: SeShutdownPrivilege 1268 Explorer.EXE Token: SeShutdownPrivilege 1268 Explorer.EXE -
Suspicious use of FindShellTrayWindow 6 IoCs
Processes:
Explorer.EXEpid process 1268 Explorer.EXE 1268 Explorer.EXE 1268 Explorer.EXE 1268 Explorer.EXE 1268 Explorer.EXE 1268 Explorer.EXE -
Suspicious use of SendNotifyMessage 5 IoCs
Processes:
Explorer.EXEpid process 1268 Explorer.EXE 1268 Explorer.EXE 1268 Explorer.EXE 1268 Explorer.EXE 1268 Explorer.EXE -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
WINWORD.EXEpid process 976 WINWORD.EXE 976 WINWORD.EXE -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exefltMcont.exe~57D0.tmpWINWORD.EXEdescription pid process target process PID 784 wrote to memory of 1896 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe fltMcont.exe PID 784 wrote to memory of 1896 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe fltMcont.exe PID 784 wrote to memory of 1896 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe fltMcont.exe PID 784 wrote to memory of 1896 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe fltMcont.exe PID 1896 wrote to memory of 1784 1896 fltMcont.exe ~57D0.tmp PID 1896 wrote to memory of 1784 1896 fltMcont.exe ~57D0.tmp PID 1896 wrote to memory of 1784 1896 fltMcont.exe ~57D0.tmp PID 1896 wrote to memory of 1784 1896 fltMcont.exe ~57D0.tmp PID 1784 wrote to memory of 1268 1784 ~57D0.tmp Explorer.EXE PID 784 wrote to memory of 976 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe WINWORD.EXE PID 784 wrote to memory of 976 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe WINWORD.EXE PID 784 wrote to memory of 976 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe WINWORD.EXE PID 784 wrote to memory of 976 784 cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe WINWORD.EXE PID 976 wrote to memory of 1668 976 WINWORD.EXE splwow64.exe PID 976 wrote to memory of 1668 976 WINWORD.EXE splwow64.exe PID 976 wrote to memory of 1668 976 WINWORD.EXE splwow64.exe PID 976 wrote to memory of 1668 976 WINWORD.EXE splwow64.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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C:\Users\Admin\AppData\Local\Temp\cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe"C:\Users\Admin\AppData\Local\Temp\cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670.exe"2⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\ocseperf\fltMcont.exe"C:\Users\Admin\AppData\Roaming\ocseperf\fltMcont.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\~57D0.tmp"C:\Users\Admin\AppData\Local\Temp\~57D0.tmp"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\~588C.tmp.docx"3⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122884⤵
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C:\Windows\SysWOW64\mounKEYs.exeC:\Windows\SysWOW64\mounKEYs.exe -k1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
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\~57D0.tmpMD5
b1a17e8071c6b7c1bf724c6ad492e2b1
SHA1970b325b150c4970af89f13203f6f45c20e84b24
SHA256986fa351a7f552fba656a07500704658f9a71521d097f299b1dc7fa9d51f8925
SHA512c0ff7c749109a4921da45b559b907cfca41d8534ee504b35f387c5020a868e8da2cb7f9805556ca52499142f096fd2407b6dd3b956286bab9a43b4a23368668b
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C:\Users\Admin\AppData\Local\Temp\~588C.tmp.docxMD5
fee3944c7c5bf660e2ee3ebeee861ab1
SHA10808cf02731aa1560ae53591339fee7189d29823
SHA256f0022e17f4b613886f6122fa2938c8522f639cb98a4816e0e4a913ab4805cf78
SHA5126a6977649f20489230de512c2cfc6ab96bf6cb931b0500c8b0090f0c13f3db1853eea25df4159d33c53f4ec0b3f2ee83a152846afb24ed491a8d7ff75ff823e3
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C:\Users\Admin\AppData\Roaming\ocseperf\fltMcont.exeMD5
e01c17e6e1b1c097b3fd998b0d6802e6
SHA15fde3721fbfd68211f066a11cb3cb3cacc890bce
SHA2567467281c12d4e195504f6c2bf62b5535f129fd26b8d620df23e167f8452c3288
SHA512f9685cf62d0eeed53a6693e53752a47347aa2f7a086234e9917ef8c6a187f6b91115eb604166525d162360accd00b137d1f3cb3c30d050d6321f745f09e2efa1
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C:\Users\Admin\AppData\Roaming\ocseperf\fltMcont.exeMD5
e01c17e6e1b1c097b3fd998b0d6802e6
SHA15fde3721fbfd68211f066a11cb3cb3cacc890bce
SHA2567467281c12d4e195504f6c2bf62b5535f129fd26b8d620df23e167f8452c3288
SHA512f9685cf62d0eeed53a6693e53752a47347aa2f7a086234e9917ef8c6a187f6b91115eb604166525d162360accd00b137d1f3cb3c30d050d6321f745f09e2efa1
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C:\Windows\SysWOW64\mounKEYs.exeMD5
dd21a3a58b5142e8a7de2ef73066f309
SHA1f91f60a05764bc1739f26701c07a0486eaf94308
SHA256cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670
SHA5129314f6ea0c08c910c05380234709d1722652725aa8178be1213753c73227d2dfc8c54aba3cd5f45890ed91665b8d4c0c733062e231047989ca8dc9e8f8b8ab80
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C:\Windows\SysWOW64\mounKEYs.exeMD5
dd21a3a58b5142e8a7de2ef73066f309
SHA1f91f60a05764bc1739f26701c07a0486eaf94308
SHA256cf2232272e2edd669ebb849270110235f87785fcd9cdf72858bccd3f45ebc670
SHA5129314f6ea0c08c910c05380234709d1722652725aa8178be1213753c73227d2dfc8c54aba3cd5f45890ed91665b8d4c0c733062e231047989ca8dc9e8f8b8ab80
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\Users\Admin\AppData\Local\Temp\~57D0.tmpMD5
b1a17e8071c6b7c1bf724c6ad492e2b1
SHA1970b325b150c4970af89f13203f6f45c20e84b24
SHA256986fa351a7f552fba656a07500704658f9a71521d097f299b1dc7fa9d51f8925
SHA512c0ff7c749109a4921da45b559b907cfca41d8534ee504b35f387c5020a868e8da2cb7f9805556ca52499142f096fd2407b6dd3b956286bab9a43b4a23368668b
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\Users\Admin\AppData\Roaming\ocseperf\fltMcont.exeMD5
e01c17e6e1b1c097b3fd998b0d6802e6
SHA15fde3721fbfd68211f066a11cb3cb3cacc890bce
SHA2567467281c12d4e195504f6c2bf62b5535f129fd26b8d620df23e167f8452c3288
SHA512f9685cf62d0eeed53a6693e53752a47347aa2f7a086234e9917ef8c6a187f6b91115eb604166525d162360accd00b137d1f3cb3c30d050d6321f745f09e2efa1
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\Users\Admin\AppData\Roaming\ocseperf\fltMcont.exeMD5
e01c17e6e1b1c097b3fd998b0d6802e6
SHA15fde3721fbfd68211f066a11cb3cb3cacc890bce
SHA2567467281c12d4e195504f6c2bf62b5535f129fd26b8d620df23e167f8452c3288
SHA512f9685cf62d0eeed53a6693e53752a47347aa2f7a086234e9917ef8c6a187f6b91115eb604166525d162360accd00b137d1f3cb3c30d050d6321f745f09e2efa1
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memory/784-61-0x0000000000120000-0x000000000018C000-memory.dmpFilesize
432KB
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memory/784-60-0x0000000075AA1000-0x0000000075AA3000-memory.dmpFilesize
8KB
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memory/976-77-0x0000000000000000-mapping.dmp
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memory/976-78-0x0000000072391000-0x0000000072394000-memory.dmpFilesize
12KB
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memory/976-79-0x000000006FE11000-0x000000006FE13000-memory.dmpFilesize
8KB
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memory/976-80-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/976-84-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1224-76-0x00000000000E0000-0x000000000014C000-memory.dmpFilesize
432KB
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memory/1268-72-0x0000000003D60000-0x0000000003DA3000-memory.dmpFilesize
268KB
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memory/1668-82-0x0000000000000000-mapping.dmp
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memory/1668-83-0x000007FEFB891000-0x000007FEFB893000-memory.dmpFilesize
8KB
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memory/1784-69-0x0000000000000000-mapping.dmp
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memory/1896-71-0x0000000000260000-0x00000000002A0000-memory.dmpFilesize
256KB
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memory/1896-64-0x0000000000000000-mapping.dmp