glupteba | feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 05:48

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General

Target
feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Size 4.2MB
Sample240420-ghtr8aaa82
SHA256 feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6
MD5 0bb31a695e9f6820d7fcd05fa8f19e2c
SHA1 449dc9d99a225c6820f2f8cc346ac39f73c1388a
SHA512 a7596e17851ccc47182ad2774e72d775cec8bede5740fdbff7fef538f97eec4955ed85f06e4d93b0c70affd20cab4b3a692181ba4f6b2eb252f10502add1f4e3
SSDEEP 98304:tLQYZG/dgZ86BiJBiuHE0xNIsAKMiZ9poPnhJgyiGs:tf8gKxTxapLMoPnzgL
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 20 IoCs

resource	yara_rule
behavioral1/memory/5008-2-0x0000000004090000-0x000000000497B000-memory.dmp	family_glupteba
behavioral1/memory/5008-3-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/4032-56-0x0000000004060000-0x000000000494B000-memory.dmp	family_glupteba
behavioral1/memory/4032-59-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/5008-58-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/5008-60-0x0000000004090000-0x000000000497B000-memory.dmp	family_glupteba
behavioral1/memory/4032-158-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-263-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-272-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-273-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-275-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-278-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-280-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-281-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-283-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-285-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-288-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-290-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-291-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral1/memory/2088-293-0x0000000000400000-0x0000000001E06000-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
4856	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
2088	csrss.exe
4880	injector.exe
4416	windefender.exe
696	windefender.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000900000002346b-266.dat	upx
behavioral1/memory/4416-271-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/696-274-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/696-277-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral1/memory/696-284-0x0000000000400000-0x00000000008DF000-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-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\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 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
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

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	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\rss\csrss.exe	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
File created	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\rss	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe

Launches sc.exe 1 IoCs

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

pid	Process
4468	sc.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5112	5008	WerFault.exe	85
5112	4032	WerFault.exe	94

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
4008	schtasks.exe
3424	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-431 = "Iran Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-449 = "Azerbaijan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-621 = "Korea Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-212 = "Pacific Standard Time"	windefender.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-12 = "Azores Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-962 = "Paraguay Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-752 = "Tonga Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2002 = "Cabo Verde Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-931 = "Coordinated Universal Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-221 = "Alaskan Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-691 = "Tasmania Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-451 = "Caucasus Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-401 = "Arabic Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-111 = "Eastern Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-361 = "GTB Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2841 = "Saratov Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-391 = "Arab Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2321 = "Sakhalin Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-531 = "Sri Lanka Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2322 = "Sakhalin Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-651 = "AUS Central Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-162 = "Central Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1801 = "Line Islands Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1502 = "Turkey Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-42 = "E. South America Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-452 = "Caucasus Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1412 = "Syria Standard Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2148	powershell.exe
2148	powershell.exe
5008	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
5008	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
2960	powershell.exe
2960	powershell.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
1396	powershell.exe
1396	powershell.exe
3056	powershell.exe
3056	powershell.exe
3056	powershell.exe
1564	powershell.exe
1564	powershell.exe
3156	powershell.exe
3156	powershell.exe
3156	powershell.exe
2512	powershell.exe
2512	powershell.exe
2512	powershell.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
2088	csrss.exe
2088	csrss.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
2088	csrss.exe
2088	csrss.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
2088	csrss.exe
2088	csrss.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe
4880	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	5008	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Token: SeImpersonatePrivilege	5008	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
Token: SeDebugPrivilege	2960	powershell.exe
Token: SeDebugPrivilege	1396	powershell.exe
Token: SeDebugPrivilege	3056	powershell.exe
Token: SeDebugPrivilege	1564	powershell.exe
Token: SeDebugPrivilege	3156	powershell.exe
Token: SeDebugPrivilege	2512	powershell.exe
Token: SeSystemEnvironmentPrivilege	2088	csrss.exe
Token: SeSecurityPrivilege	4468	sc.exe
Token: SeSecurityPrivilege	4468	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 2148	5008	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	90
PID 5008 wrote to memory of 2148	5008	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	90
PID 5008 wrote to memory of 2148	5008	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	90
PID 4032 wrote to memory of 2960	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	98
PID 4032 wrote to memory of 2960	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	98
PID 4032 wrote to memory of 2960	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	98
PID 4032 wrote to memory of 3888	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	101
PID 4032 wrote to memory of 3888	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	101
PID 3888 wrote to memory of 4856	3888	cmd.exe	103
PID 3888 wrote to memory of 4856	3888	cmd.exe	103
PID 4032 wrote to memory of 1396	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	104
PID 4032 wrote to memory of 1396	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	104
PID 4032 wrote to memory of 1396	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	104
PID 4032 wrote to memory of 3056	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	109
PID 4032 wrote to memory of 3056	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	109
PID 4032 wrote to memory of 3056	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	109
PID 4032 wrote to memory of 2088	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	111
PID 4032 wrote to memory of 2088	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	111
PID 4032 wrote to memory of 2088	4032	feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe	111
PID 2088 wrote to memory of 1564	2088	csrss.exe	114
PID 2088 wrote to memory of 1564	2088	csrss.exe	114
PID 2088 wrote to memory of 1564	2088	csrss.exe	114
PID 2088 wrote to memory of 3156	2088	csrss.exe	121
PID 2088 wrote to memory of 3156	2088	csrss.exe	121
PID 2088 wrote to memory of 3156	2088	csrss.exe	121
PID 2088 wrote to memory of 2512	2088	csrss.exe	124
PID 2088 wrote to memory of 2512	2088	csrss.exe	124
PID 2088 wrote to memory of 2512	2088	csrss.exe	124
PID 2088 wrote to memory of 4880	2088	csrss.exe	126
PID 2088 wrote to memory of 4880	2088	csrss.exe	126
PID 4416 wrote to memory of 2820	4416	windefender.exe	133
PID 4416 wrote to memory of 2820	4416	windefender.exe	133
PID 4416 wrote to memory of 2820	4416	windefender.exe	133
PID 2820 wrote to memory of 4468	2820	cmd.exe	134
PID 2820 wrote to memory of 4468	2820	cmd.exe	134
PID 2820 wrote to memory of 4468	2820	cmd.exe	134

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\feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
"C:\Users\Admin\AppData\Local\Temp\feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2148
- C:\Users\Admin\AppData\Local\Temp\feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.exe
  "C:\Users\Admin\AppData\Local\Temp\feac8779d73f2e094f514d305d515174db0bd3edb21a83656866164985a6a0a6.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:4032
- - 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:2960
- - 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:3888
  - - 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:4856
- - 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:1396
- - 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:3056
- - 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:2088
  - - 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:1564
  - - 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:4008
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4104
  - - 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:3156
  - - 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:2512
  - - 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:4880
  - - 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:3424
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:4416
    - - 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:2820
      - 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:4468
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 912
    3⤵
    - Program crash
    PID:5112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 960
  2⤵
  - Program crash
  PID:5112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5008 -ip 5008
1⤵
PID:4004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4032 -ip 4032
1⤵
PID:748

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:696

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

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Downloads

__PSScriptPolicyTest_5n3dyur2.sz2.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5n3dyur2.sz2.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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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

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
MD5 3d086a433708053f9bf9523e1d87a4e8
SHA1 b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA512 931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
MD5 SHA1 SHA512

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