Analysis Overview
SHA256
a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f
Threat Level: Known bad
The file a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f was found to be: Known bad.
Malicious Activity Summary
RMS
UAC bypass
Executes dropped EXE
Modifies Windows Firewall
UPX packed file
Loads dropped DLL
Checks computer location settings
Drops file in Windows directory
Enumerates physical storage devices
Modifies Internet Explorer settings
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Modifies data under HKEY_USERS
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-01-28 19:07
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2022-01-28 19:07
Reported
2022-01-28 19:45
Platform
win7-en-20211208
Max time kernel
151s
Max time network
165s
Command Line
Signatures
RMS
UAC bypass
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
Modifies Windows Firewall
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Control Panel\International\Geo\Nation | C:\Windows\System64\sysdisk.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\System64\vp8encoder.dll | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
| File created | C:\Windows\System64\vp8decoder.dll | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
| File created | C:\Windows\System64\sysdisk.exe | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
Enumerates physical storage devices
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\Main | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
Modifies registry key
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\System64\sysdisk.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe
"C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe"
C:\Windows\SysWOW64\netsh.exe
netsh firewall set opmode mode=disable
C:\Windows\SysWOW64\netsh.exe
netsh advfirewall set allprofiles state off
C:\Windows\SysWOW64\reg.exe
reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
C:\Windows\SysWOW64\powercfg.exe
powercfg.exe -h off
C:\Windows\System64\sysdisk.exe
"C:\Windows\System64\sysdisk.exe"
C:\Windows\System64\sysdisk.exe
C:\Windows\System64\sysdisk.exe -second
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | rms-server.tektonit.ru | udp |
| RU | 95.213.205.83:5655 | rms-server.tektonit.ru | tcp |
| US | 8.8.8.8:53 | black-rad.pro | udp |
Files
memory/1568-55-0x0000000076371000-0x0000000076373000-memory.dmp
memory/1568-56-0x0000000000230000-0x0000000000231000-memory.dmp
\Windows\System64\sysdisk.exe
| MD5 | 92aee365c9fab710fa68b362e5910264 |
| SHA1 | a145a246311bed3c4c5e14332618795a189e13a4 |
| SHA256 | 0d5373376ab09d8d286732008b15a5bdf34ec9fa7492504e2634bb2490760713 |
| SHA512 | 6c37048df8bb80cc04453859ef86cc89e866c21fc3f24930aa7dfe6114ffba6fd82204d15e69d30f2b8b326ea31737af17a2729f1272e515a05f9af6ea8e84e9 |
C:\Windows\System64\sysdisk.exe
| MD5 | 92aee365c9fab710fa68b362e5910264 |
| SHA1 | a145a246311bed3c4c5e14332618795a189e13a4 |
| SHA256 | 0d5373376ab09d8d286732008b15a5bdf34ec9fa7492504e2634bb2490760713 |
| SHA512 | 6c37048df8bb80cc04453859ef86cc89e866c21fc3f24930aa7dfe6114ffba6fd82204d15e69d30f2b8b326ea31737af17a2729f1272e515a05f9af6ea8e84e9 |
C:\Windows\System64\sysdisk.exe
| MD5 | 92aee365c9fab710fa68b362e5910264 |
| SHA1 | a145a246311bed3c4c5e14332618795a189e13a4 |
| SHA256 | 0d5373376ab09d8d286732008b15a5bdf34ec9fa7492504e2634bb2490760713 |
| SHA512 | 6c37048df8bb80cc04453859ef86cc89e866c21fc3f24930aa7dfe6114ffba6fd82204d15e69d30f2b8b326ea31737af17a2729f1272e515a05f9af6ea8e84e9 |
memory/1516-62-0x0000000000270000-0x0000000000271000-memory.dmp
memory/1516-63-0x0000000004190000-0x0000000004191000-memory.dmp
C:\Windows\System64\sysdisk.exe
| MD5 | 92aee365c9fab710fa68b362e5910264 |
| SHA1 | a145a246311bed3c4c5e14332618795a189e13a4 |
| SHA256 | 0d5373376ab09d8d286732008b15a5bdf34ec9fa7492504e2634bb2490760713 |
| SHA512 | 6c37048df8bb80cc04453859ef86cc89e866c21fc3f24930aa7dfe6114ffba6fd82204d15e69d30f2b8b326ea31737af17a2729f1272e515a05f9af6ea8e84e9 |
memory/1160-66-0x00000000024E0000-0x00000000027F0000-memory.dmp
C:\Windows\System64\vp8decoder.dll
| MD5 | d43fa82fab5337ce20ad14650085c5d9 |
| SHA1 | 678aa092075ff65b6815ffc2d8fdc23af8425981 |
| SHA256 | c022958429edd94bfe31f2eacfe24ff6b45d6f12747725c449a36116373de03b |
| SHA512 | 103e61a9f58df03316676a074487e50ec518479c11068df3736df139b85c7671048c65bce0ef2c55b3c50c61fde54e9e6c7d1b795aea71263ae94c91d4874e0d |
C:\Windows\System64\vp8encoder.dll
| MD5 | dab4646806dfca6d0e0b4d80fa9209d6 |
| SHA1 | 8244dfe22ec2090eee89dad103e6b2002059d16a |
| SHA256 | cb6ef96d3a66ef08ec2c8640b751a52d6d4f4530cf01162a69966f0fd5153587 |
| SHA512 | aa5eb93bf23a10de797d6fb52a55a95d36bc48927c76fedd81e0c48872745cb7f7d1b3f230eaae42fd4e79b6a59ca707e56bd6963b03644cbd5984f11e98d6e7 |
memory/1160-72-0x0000000004D80000-0x0000000004D81000-memory.dmp
memory/1160-71-0x0000000004D30000-0x0000000004D31000-memory.dmp
memory/1160-73-0x0000000004D40000-0x0000000004D41000-memory.dmp
memory/1160-74-0x0000000004D70000-0x0000000004D71000-memory.dmp
memory/1160-75-0x0000000004D90000-0x0000000004D91000-memory.dmp
memory/1160-76-0x0000000005480000-0x0000000005590000-memory.dmp
memory/1160-78-0x0000000004DB0000-0x0000000004DB1000-memory.dmp
memory/1160-77-0x0000000005480000-0x0000000005590000-memory.dmp
memory/1160-79-0x00000000055B0000-0x00000000055B1000-memory.dmp
memory/1160-81-0x0000000006520000-0x000000000667C000-memory.dmp
memory/1160-80-0x00000000064F0000-0x00000000064F1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-01-28 19:07
Reported
2022-01-28 19:45
Platform
win10-en-20211208
Max time kernel
162s
Max time network
166s
Command Line
Signatures
RMS
UAC bypass
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
Modifies Windows Firewall
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Control Panel\International\Geo\Nation | C:\Windows\System64\sysdisk.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\System64\vp8encoder.dll | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
| File created | C:\Windows\System64\vp8decoder.dll | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
| File created | C:\Windows\System64\sysdisk.exe | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
Enumerates physical storage devices
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\16\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 | C:\Windows\System64\sysdisk.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\16\52C64B7E\@C:\Windows\SysWOW64\FirewallControlPanel.dll,-12122 = "Windows Firewall" | C:\Windows\System64\sysdisk.exe | N/A |
Modifies registry key
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\SysWOW64\powercfg.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\System64\sysdisk.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
| N/A | N/A | C:\Windows\System64\sysdisk.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe
"C:\Users\Admin\AppData\Local\Temp\a73257c612eff6dce25c2667b0e16a692a5c7e45459e82357bdb53afcc77e92f.exe"
C:\Windows\SysWOW64\netsh.exe
netsh firewall set opmode mode=disable
C:\Windows\SysWOW64\netsh.exe
netsh advfirewall set allprofiles state off
C:\Windows\SysWOW64\powercfg.exe
powercfg.exe -h off
C:\Windows\SysWOW64\reg.exe
reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
C:\Windows\System64\sysdisk.exe
"C:\Windows\System64\sysdisk.exe"
C:\Windows\System64\sysdisk.exe
C:\Windows\System64\sysdisk.exe -second
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | rms-server.tektonit.ru | udp |
| RU | 95.213.205.83:5655 | rms-server.tektonit.ru | tcp |
| US | 8.8.8.8:53 | black-rad.pro | udp |
Files
memory/3780-118-0x0000000001420000-0x0000000001421000-memory.dmp
C:\Windows\System64\sysdisk.exe
| MD5 | 92aee365c9fab710fa68b362e5910264 |
| SHA1 | a145a246311bed3c4c5e14332618795a189e13a4 |
| SHA256 | 0d5373376ab09d8d286732008b15a5bdf34ec9fa7492504e2634bb2490760713 |
| SHA512 | 6c37048df8bb80cc04453859ef86cc89e866c21fc3f24930aa7dfe6114ffba6fd82204d15e69d30f2b8b326ea31737af17a2729f1272e515a05f9af6ea8e84e9 |
C:\Windows\System64\sysdisk.exe
| MD5 | 92aee365c9fab710fa68b362e5910264 |
| SHA1 | a145a246311bed3c4c5e14332618795a189e13a4 |
| SHA256 | 0d5373376ab09d8d286732008b15a5bdf34ec9fa7492504e2634bb2490760713 |
| SHA512 | 6c37048df8bb80cc04453859ef86cc89e866c21fc3f24930aa7dfe6114ffba6fd82204d15e69d30f2b8b326ea31737af17a2729f1272e515a05f9af6ea8e84e9 |
memory/4372-121-0x00000000013F0000-0x00000000013F1000-memory.dmp
C:\Windows\System64\sysdisk.exe
| MD5 | 92aee365c9fab710fa68b362e5910264 |
| SHA1 | a145a246311bed3c4c5e14332618795a189e13a4 |
| SHA256 | 0d5373376ab09d8d286732008b15a5bdf34ec9fa7492504e2634bb2490760713 |
| SHA512 | 6c37048df8bb80cc04453859ef86cc89e866c21fc3f24930aa7dfe6114ffba6fd82204d15e69d30f2b8b326ea31737af17a2729f1272e515a05f9af6ea8e84e9 |
memory/4372-123-0x0000000004660000-0x0000000004661000-memory.dmp
memory/780-124-0x0000000001290000-0x0000000001291000-memory.dmp
C:\Windows\System64\vp8encoder.dll
| MD5 | dab4646806dfca6d0e0b4d80fa9209d6 |
| SHA1 | 8244dfe22ec2090eee89dad103e6b2002059d16a |
| SHA256 | cb6ef96d3a66ef08ec2c8640b751a52d6d4f4530cf01162a69966f0fd5153587 |
| SHA512 | aa5eb93bf23a10de797d6fb52a55a95d36bc48927c76fedd81e0c48872745cb7f7d1b3f230eaae42fd4e79b6a59ca707e56bd6963b03644cbd5984f11e98d6e7 |
C:\Windows\System64\vp8decoder.dll
| MD5 | d43fa82fab5337ce20ad14650085c5d9 |
| SHA1 | 678aa092075ff65b6815ffc2d8fdc23af8425981 |
| SHA256 | c022958429edd94bfe31f2eacfe24ff6b45d6f12747725c449a36116373de03b |
| SHA512 | 103e61a9f58df03316676a074487e50ec518479c11068df3736df139b85c7671048c65bce0ef2c55b3c50c61fde54e9e6c7d1b795aea71263ae94c91d4874e0d |
memory/780-127-0x0000000003480000-0x0000000003481000-memory.dmp
memory/780-128-0x0000000003490000-0x0000000003491000-memory.dmp
memory/780-129-0x00000000034A0000-0x00000000034A1000-memory.dmp
memory/780-130-0x0000000004FB0000-0x0000000004FB1000-memory.dmp
memory/780-132-0x0000000004F80000-0x0000000004F81000-memory.dmp
memory/780-131-0x0000000005100000-0x0000000005101000-memory.dmp
memory/780-133-0x0000000004F90000-0x0000000004F91000-memory.dmp
memory/780-135-0x00000000053D0000-0x00000000053D1000-memory.dmp
memory/780-134-0x0000000004FA0000-0x0000000004FA1000-memory.dmp
memory/780-136-0x0000000006EA0000-0x0000000006EA1000-memory.dmp
memory/780-137-0x00000000070A0000-0x00000000070A1000-memory.dmp
memory/780-138-0x0000000006E90000-0x0000000006E91000-memory.dmp
memory/780-139-0x0000000007240000-0x0000000007311000-memory.dmp