Analysis Overview
SHA256
6b22261ef9a97fde0923ffe05c7aa8317fd3b0e27c10fbc967f9961a5f39c105
Threat Level: Known bad
The file svchost.exe was found to be: Known bad.
Malicious Activity Summary
UAC bypass
Windows security bypass
XpertRAT Core Payload
XpertRAT
NirSoft WebBrowserPassView
Nirsoft
NirSoft MailPassView
UPX packed file
Adds policy Run key to start application
Windows security modification
Program crash
Adds Run key to start application
Checks whether UAC is enabled
Suspicious use of SetThreadContext
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-07-22 15:37
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-07-09 20:45
Reported
2021-07-09 20:48
Platform
win7v20210410
Max time kernel
39s
Max time network
173s
Command Line
Signatures
UAC bypass
Windows security bypass
XpertRAT
XpertRAT Core Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds policy Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6 = "C:\\Users\\Admin\\AppData\\Roaming\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6 = "C:\\Users\\Admin\\AppData\\Roaming\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6 = "C:\\Users\\Admin\\AppData\\Roaming\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1816 set thread context of 1652 | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | C:\Users\Admin\AppData\Local\Temp\svchost.exe |
| PID 1652 set thread context of 656 | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
C:\Users\Admin\AppData\Local\Temp\svchost.exe
"{path}"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | ioxg.ix.tc | udp |
| N/A | 37.0.11.114:4000 | ioxg.ix.tc | tcp |
| N/A | 37.0.11.114:4000 | ioxg.ix.tc | tcp |
| N/A | 37.0.11.114:4000 | ioxg.ix.tc | tcp |
Files
memory/1816-60-0x0000000000880000-0x0000000000881000-memory.dmp
memory/1816-62-0x0000000075631000-0x0000000075633000-memory.dmp
memory/1816-63-0x0000000002280000-0x0000000002281000-memory.dmp
memory/1816-64-0x00000000001E0000-0x00000000001E2000-memory.dmp
memory/1816-65-0x0000000007F60000-0x0000000008008000-memory.dmp
memory/1816-66-0x0000000004670000-0x00000000046CA000-memory.dmp
memory/1652-67-0x0000000000400000-0x000000000042C000-memory.dmp
memory/1652-68-0x00000000004010B8-mapping.dmp
memory/656-71-0x0000000000400000-0x0000000000444000-memory.dmp
memory/656-72-0x0000000000401364-mapping.dmp
memory/656-73-0x0000000000730000-0x0000000000883000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-07-09 20:45
Reported
2021-07-09 20:47
Platform
win10v20210408
Max time kernel
48s
Max time network
146s
Command Line
Signatures
UAC bypass
Windows security bypass
XpertRAT
XpertRAT Core Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
NirSoft WebBrowserPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds policy Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6 = "C:\\Users\\Admin\\AppData\\Roaming\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6 = "C:\\Users\\Admin\\AppData\\Roaming\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6 = "C:\\Users\\Admin\\AppData\\Roaming\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Suspicious use of SetThreadContext
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\svchost.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
C:\Users\Admin\AppData\Local\Temp\svchost.exe
"{path}"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1336 -s 96
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\excztyxai0.txt"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\excztyxai1.txt"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\excztyxai2.txt"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1888 -s 92
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\excztyxai2.txt"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\excztyxai3.txt"
C:\Program Files (x86)\Internet Explorer\iexplore.exe
/stext "C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\excztyxai4.txt"
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | ioxg.ix.tc | udp |
| N/A | 37.0.11.114:4000 | ioxg.ix.tc | tcp |
| N/A | 37.0.11.114:4000 | ioxg.ix.tc | tcp |
| N/A | 37.0.11.114:4000 | ioxg.ix.tc | tcp |
Files
memory/628-114-0x0000000000150000-0x0000000000151000-memory.dmp
memory/628-116-0x0000000005700000-0x0000000005701000-memory.dmp
memory/628-117-0x0000000004F80000-0x0000000004F81000-memory.dmp
memory/628-118-0x0000000005200000-0x00000000056FE000-memory.dmp
memory/628-119-0x0000000004F70000-0x0000000004F71000-memory.dmp
memory/628-120-0x00000000087B0000-0x00000000087B1000-memory.dmp
memory/628-121-0x0000000005090000-0x0000000005092000-memory.dmp
memory/628-122-0x0000000008B50000-0x0000000008BF8000-memory.dmp
memory/628-123-0x000000000B320000-0x000000000B37A000-memory.dmp
memory/2664-124-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2664-125-0x00000000004010B8-mapping.dmp
memory/2664-128-0x0000000000400000-0x000000000042C000-memory.dmp
memory/1336-130-0x0000000000401364-mapping.dmp
memory/1244-131-0x0000000000400000-0x0000000000444000-memory.dmp
memory/1244-132-0x0000000000401364-mapping.dmp
memory/1244-135-0x0000000003760000-0x00000000038B3000-memory.dmp
memory/1244-136-0x0000000003761000-0x000000000385D000-memory.dmp
memory/4012-139-0x0000000000400000-0x0000000000426000-memory.dmp
memory/4012-140-0x0000000000423BC0-mapping.dmp
memory/672-143-0x0000000000400000-0x000000000041B000-memory.dmp
memory/672-144-0x0000000000411654-mapping.dmp
memory/1888-148-0x0000000000442F04-mapping.dmp
memory/2216-149-0x0000000000400000-0x0000000000459000-memory.dmp
memory/2216-150-0x0000000000442F04-mapping.dmp
C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\excztyxai2.txt
| MD5 | f94dc819ca773f1e3cb27abbc9e7fa27 |
| SHA1 | 9a7700efadc5ea09ab288544ef1e3cd876255086 |
| SHA256 | a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92 |
| SHA512 | 72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196 |
memory/1644-155-0x0000000000413750-mapping.dmp
memory/1644-154-0x0000000000400000-0x0000000000416000-memory.dmp
memory/3928-158-0x0000000000400000-0x0000000000415000-memory.dmp
memory/3928-159-0x000000000040C2A8-mapping.dmp
C:\Users\Admin\AppData\Roaming\R4W8O5A3-P0G7-Q7U5-H114-L7S6L4U0I6I6\excztyxai4.txt
| MD5 | f3b25701fe362ec84616a93a45ce9998 |
| SHA1 | d62636d8caec13f04e28442a0a6fa1afeb024bbb |
| SHA256 | b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209 |
| SHA512 | 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84 |