glupteba | 66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154

Analysis

max time kernel
149s
max time network
145s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
04/04/2024, 23:29

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Size 4.1MB
Sample240404-3gl7msec32
SHA256 66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154
MD5 cdc721d04d0d3d4cc7a7a7a9ad727267
SHA1 c71fbdbceba7b451ef1edb062bc12948d0face24
SHA512 8ee4d270ba5f406755b8a7d84a7dba8c2dd14f2a5ce22d31c0a58d3c03edad5cbfa4f5278cd7d0c2350b1d8c0fb8fa36ffe8fb68d7a47c745701f8c11b1abc7c
SSDEEP 98304:il4yxm3XWe9PuTiK1mjHigJm+F9pvggMDWt0Z4RVYt+rtvO/:Q44mV9PuT3crigRDggMDWt0ZYVYtIu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit upx

Malware Config

Signatures

Glupteba
Glupteba is a modular loader written in Golang with various components.
loader dropper glupteba

Glupteba payload 19 IoCs

resource	yara_rule
behavioral2/memory/2172-2-0x0000000005380000-0x0000000005C6B000-memory.dmp	family_glupteba
behavioral2/memory/2172-3-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2172-52-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2172-54-0x0000000005380000-0x0000000005C6B000-memory.dmp	family_glupteba
behavioral2/memory/3756-56-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/3756-115-0x0000000004E10000-0x0000000005215000-memory.dmp	family_glupteba
behavioral2/memory/3756-139-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/3756-147-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-237-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-253-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-256-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-260-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-264-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-268-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-272-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-276-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-280-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-284-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/4608-288-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2992	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
4608	csrss.exe
4572	injector.exe
4832	windefender.exe
4408	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a788-246.dat	upx
behavioral2/memory/4832-251-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4408-257-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4408-265-0x0000000000400000-0x00000000008DF000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1637591879-962683004-3585269084-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1637591879-962683004-3585269084-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	csrss.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Manipulates WinMonFS driver. 1 IoCs

Roottkits write to WinMonFS to hide directories/files from being detected.

rootkit evasion

description	ioc	Process
File opened for modification	\??\WinMonFS	csrss.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive	powershell.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log	powershell.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
File created	C:\Windows\rss\csrss.exe	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3488	sc.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2472	schtasks.exe
928	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2142 = "Transbaikal Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-662 = "Cen. Australia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-162 = "Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-182 = "Mountain Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-962 = "Paraguay Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1871 = "Russia TZ 7 Daylight Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-661 = "Cen. Australia Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-282 = "Central Europe Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-281 = "Central Europe Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-201 = "US Mountain Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2412 = "Marquesas Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-741 = "New Zealand Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-432 = "Iran Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2342 = "Haiti Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-931 = "Coordinated Universal Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2061 = "North Korea Daylight Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1842 = "Russia TZ 4 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-961 = "Paraguay Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time"	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-792 = "SA Western Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-242 = "Samoa Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-12 = "Azores Standard Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2288	powershell.exe
2288	powershell.exe
2172	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
2172	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
1404	powershell.exe
1404	powershell.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
5084	powershell.exe
5084	powershell.exe
2220	powershell.exe
2220	powershell.exe
2012	powershell.exe
2012	powershell.exe
1076	powershell.exe
1076	powershell.exe
2128	powershell.exe
2128	powershell.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4608	csrss.exe
4608	csrss.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4608	csrss.exe
4608	csrss.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4608	csrss.exe
4608	csrss.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe
4572	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2288	powershell.exe
Token: SeDebugPrivilege	2172	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Token: SeImpersonatePrivilege	2172	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
Token: SeDebugPrivilege	1404	powershell.exe
Token: SeDebugPrivilege	5084	powershell.exe
Token: SeDebugPrivilege	2220	powershell.exe
Token: SeDebugPrivilege	2012	powershell.exe
Token: SeDebugPrivilege	1076	powershell.exe
Token: SeDebugPrivilege	2128	powershell.exe
Token: SeSystemEnvironmentPrivilege	4608	csrss.exe
Token: SeSecurityPrivilege	3488	sc.exe
Token: SeSecurityPrivilege	3488	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2288	2172	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	79
PID 2172 wrote to memory of 2288	2172	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	79
PID 2172 wrote to memory of 2288	2172	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	79
PID 3756 wrote to memory of 1404	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	84
PID 3756 wrote to memory of 1404	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	84
PID 3756 wrote to memory of 1404	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	84
PID 3756 wrote to memory of 956	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	86
PID 3756 wrote to memory of 956	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	86
PID 956 wrote to memory of 2992	956	cmd.exe	88
PID 956 wrote to memory of 2992	956	cmd.exe	88
PID 3756 wrote to memory of 5084	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	89
PID 3756 wrote to memory of 5084	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	89
PID 3756 wrote to memory of 5084	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	89
PID 3756 wrote to memory of 2220	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	91
PID 3756 wrote to memory of 2220	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	91
PID 3756 wrote to memory of 2220	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	91
PID 3756 wrote to memory of 4608	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	93
PID 3756 wrote to memory of 4608	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	93
PID 3756 wrote to memory of 4608	3756	66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe	93
PID 4608 wrote to memory of 2012	4608	csrss.exe	94
PID 4608 wrote to memory of 2012	4608	csrss.exe	94
PID 4608 wrote to memory of 2012	4608	csrss.exe	94
PID 4608 wrote to memory of 1076	4608	csrss.exe	99
PID 4608 wrote to memory of 1076	4608	csrss.exe	99
PID 4608 wrote to memory of 1076	4608	csrss.exe	99
PID 4608 wrote to memory of 2128	4608	csrss.exe	102
PID 4608 wrote to memory of 2128	4608	csrss.exe	102
PID 4608 wrote to memory of 2128	4608	csrss.exe	102
PID 4608 wrote to memory of 4572	4608	csrss.exe	104
PID 4608 wrote to memory of 4572	4608	csrss.exe	104
PID 4832 wrote to memory of 4772	4832	windefender.exe	110
PID 4832 wrote to memory of 4772	4832	windefender.exe	110
PID 4832 wrote to memory of 4772	4832	windefender.exe	110
PID 4772 wrote to memory of 3488	4772	cmd.exe	111
PID 4772 wrote to memory of 3488	4772	cmd.exe	111
PID 4772 wrote to memory of 3488	4772	cmd.exe	111

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
"C:\Users\Admin\AppData\Local\Temp\66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2288
- C:\Users\Admin\AppData\Local\Temp\66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe
  "C:\Users\Admin\AppData\Local\Temp\66f4bfc07fd6056093ba9b81370e828ff01f38af2035f1f87d73caffc6049154.exe"
  2⤵
  - Adds Run key to start application
  - Checks for VirtualBox DLLs, possible anti-VM trick
  - Drops file in Windows directory
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3756
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1404
- - C:\Windows\system32\cmd.exe
    C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:956
  - - C:\Windows\system32\netsh.exe
      netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
      4⤵
      Modifies Windows Firewall
      PID:2992
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5084
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2220
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4608
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2012
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
      4⤵
      Creates scheduled task(s)
      PID:2472
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:5060
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1076
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2128
  - - C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
      C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:4572
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
      4⤵
      Creates scheduled task(s)
      PID:928
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:4832
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4772
      - C:\Windows\SysWOW64\sc.exe
        
        sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        6⤵
        Launches sc.exe
        Suspicious use of AdjustPrivilegeToken
        
        PID:3488

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

__PSScriptPolicyTest_r4o3c1r3.5ow.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r4o3c1r3.5ow.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

injector.exe

Path C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Size 281KB
SHA256 5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
MD5 d98e33b66343e7c96158444127a117f6
SHA1 bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA512 705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
SSDEEP 3072:qbHszDaOJ8u2HHFIWr6e29kOnK7qFQ8wMii5I7kGvNjzMuszHshoY46bEydJ+dK9:SA3IlIA6e29vngqS8wMmuooh8z+8F
MD5 SHA1 SHA512 SSDEEP

Submit Download

powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
MD5 d0c46cad6c0778401e21910bd6b56b70
SHA1 7be418951ea96326aca445b8dfe449b2bfa0dca6
SHA512 057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
MD5 SHA1 SHA512

Submit Download