Analysis Overview
SHA256
628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf
Threat Level: Known bad
The file 628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf was found to be: Known bad.
Malicious Activity Summary
Process spawned unexpected child process
Bazar Loader
Bazar/Team9 Loader payload
Blocklisted process makes network request
Loads dropped DLL
Checks processor information in registry
Enumerates system info in registry
Suspicious use of SetWindowsHookEx
Suspicious behavior: AddClipboardFormatListener
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-01-19 12:16
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-01-19 12:16
Reported
2022-01-19 12:18
Platform
win10v2004-en-20220112
Max time kernel
133s
Max time network
151s
Command Line
Signatures
Bazar Loader
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process | N/A | C:\Windows\SYSTEM32\rundll32.exe | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE |
Bazar/Team9 Loader payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\rundll32.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\rundll32.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 416 wrote to memory of 452 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\SYSTEM32\rundll32.exe |
| PID 416 wrote to memory of 452 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Windows\SYSTEM32\rundll32.exe |
Processes
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf.xll"
C:\Windows\SYSTEM32\rundll32.exe
rundll32 C:\Users\Admin\JavaObjectReflectiveO.dll , dopt
Network
| Country | Destination | Domain | Proto |
| UA | 91.201.202.219:443 | tcp | |
| NL | 194.147.115.132:443 | tcp |
Files
memory/416-130-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp
memory/416-131-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp
memory/416-132-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp
memory/416-133-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp
memory/416-134-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp
memory/416-137-0x00007FFB9E360000-0x00007FFB9E370000-memory.dmp
memory/416-138-0x00007FFB9E360000-0x00007FFB9E370000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf.xll
| MD5 | b93d82f11a5e25f636292756755dcb34 |
| SHA1 | f4f73365f963e1ff660647ea5fec64183232a359 |
| SHA256 | 628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf |
| SHA512 | cb20f48d26c57cdc7a24db0fbd77ad7fd4f94ae5bbc6a7a740284efe111fae1cc719c88c874b5651c6e13a7166cc5cbd21f6bc8d4ea02b98b83cc48d523a204e |
C:\Users\Admin\AppData\Local\Temp\628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf.xll
| MD5 | b93d82f11a5e25f636292756755dcb34 |
| SHA1 | f4f73365f963e1ff660647ea5fec64183232a359 |
| SHA256 | 628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf |
| SHA512 | cb20f48d26c57cdc7a24db0fbd77ad7fd4f94ae5bbc6a7a740284efe111fae1cc719c88c874b5651c6e13a7166cc5cbd21f6bc8d4ea02b98b83cc48d523a204e |
C:\Users\Admin\JavaObjectReflectiveO.dll
| MD5 | 246742458a750e8bedc48ef8e1996250 |
| SHA1 | 11294a2484152213b4f3220691b61f4b6985c19d |
| SHA256 | 83c24f629cfa995a27e693010cefa67ac9b79519c46b9e57feb36d7238f9e96c |
| SHA512 | 2146f962748687b5a800c16c47b534af01dd5bb43d2694d8d07e0395b3bd2d1f644d66d5787b44204325b04af21d65d42acb7d79564d6f21e4174d648f357f41 |
C:\Users\Admin\JavaObjectReflectiveO.dll
| MD5 | 246742458a750e8bedc48ef8e1996250 |
| SHA1 | 11294a2484152213b4f3220691b61f4b6985c19d |
| SHA256 | 83c24f629cfa995a27e693010cefa67ac9b79519c46b9e57feb36d7238f9e96c |
| SHA512 | 2146f962748687b5a800c16c47b534af01dd5bb43d2694d8d07e0395b3bd2d1f644d66d5787b44204325b04af21d65d42acb7d79564d6f21e4174d648f357f41 |
memory/452-152-0x0000000180000000-0x000000018003C000-memory.dmp
memory/416-174-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp
memory/416-175-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp
memory/416-176-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp
memory/416-177-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp