glupteba | 93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46

Analysis

max time kernel
149s
max time network
153s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
24/04/2024, 16:26

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General

Target
93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Size 4.1MB
Sample240424-txvz2sdb87
SHA256 93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46
MD5 649bb407bb45d20f214885a190c2acc3
SHA1 d9c894b98ecac233da00950632b1ad786598ba62
SHA512 5cac9f72775996e22d97987cb6a723787740818a7070983227de6c2e46c9eab328cbca080579418b14caa8ce2aee16dc4b38d7c2e63d7cd32fdb63cb7dbc84e7
SSDEEP 98304:1FddrpuoRE7tl1yJ8vae/QmLpm2XHwIZYQzHZc5g5rp30lCUu:fLdBQ1yJ8Sedm2XHUQNc5XgH
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 17 IoCs

resource	yara_rule
behavioral2/memory/4608-2-0x0000000006750000-0x000000000703B000-memory.dmp	family_glupteba
behavioral2/memory/4464-53-0x0000000006570000-0x0000000006E5B000-memory.dmp	family_glupteba
behavioral2/memory/4608-51-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/4464-145-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-237-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-246-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-248-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-250-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-252-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-254-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-256-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-258-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-260-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-262-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-264-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-266-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2676-268-0x0000000000400000-0x0000000004416000-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
4896	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
2676	csrss.exe
2232	injector.exe
3024	windefender.exe
4844	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9e2-240.dat	upx
behavioral2/memory/3024-244-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4844-247-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4844-251-0x0000000000400000-0x00000000008DF000-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-1-5-21-834482027-582050234-2368284635-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-834482027-582050234-2368284635-1000\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 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

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	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
File created	C:\Windows\rss\csrss.exe	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.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
2828	sc.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4116	4608	WerFault.exe	78
1116	4464	WerFault.exe	86

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
4188	schtasks.exe
4896	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,-2141 = "Transbaikal Daylight Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1912 = "Russia TZ 10 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1042 = "Ulaanbaatar Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-11 = "Azores Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	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,-1821 = "Russia TZ 1 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-961 = "Paraguay Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2941 = "Sao Tome Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1971 = "Belarus Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-292 = "Central European Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.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\26\52C64B7E\@tzres.dll,-12 = "Azores Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1022 = "Bangladesh Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.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\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-842 = "Argentina Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-291 = "Central European Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-161 = "Central Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1472 = "Magadan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time"	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3388	powershell.exe
3388	powershell.exe
4608	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4608	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
2928	powershell.exe
2928	powershell.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
392	powershell.exe
392	powershell.exe
4884	powershell.exe
4884	powershell.exe
4524	powershell.exe
4524	powershell.exe
2996	powershell.exe
2996	powershell.exe
3996	powershell.exe
3996	powershell.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2676	csrss.exe
2676	csrss.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2676	csrss.exe
2676	csrss.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2676	csrss.exe
2676	csrss.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe
2232	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3388	powershell.exe
Token: SeDebugPrivilege	4608	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Token: SeImpersonatePrivilege	4608	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
Token: SeDebugPrivilege	2928	powershell.exe
Token: SeDebugPrivilege	392	powershell.exe
Token: SeDebugPrivilege	4884	powershell.exe
Token: SeDebugPrivilege	4524	powershell.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeDebugPrivilege	3996	powershell.exe
Token: SeSystemEnvironmentPrivilege	2676	csrss.exe
Token: SeSecurityPrivilege	2828	sc.exe
Token: SeSecurityPrivilege	2828	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4608 wrote to memory of 3388	4608	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	81
PID 4608 wrote to memory of 3388	4608	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	81
PID 4608 wrote to memory of 3388	4608	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	81
PID 4464 wrote to memory of 2928	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	90
PID 4464 wrote to memory of 2928	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	90
PID 4464 wrote to memory of 2928	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	90
PID 4464 wrote to memory of 1924	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	92
PID 4464 wrote to memory of 1924	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	92
PID 1924 wrote to memory of 4896	1924	cmd.exe	114
PID 1924 wrote to memory of 4896	1924	cmd.exe	114
PID 4464 wrote to memory of 392	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	95
PID 4464 wrote to memory of 392	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	95
PID 4464 wrote to memory of 392	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	95
PID 4464 wrote to memory of 4884	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	97
PID 4464 wrote to memory of 4884	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	97
PID 4464 wrote to memory of 4884	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	97
PID 4464 wrote to memory of 2676	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	99
PID 4464 wrote to memory of 2676	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	99
PID 4464 wrote to memory of 2676	4464	93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe	99
PID 2676 wrote to memory of 4524	2676	csrss.exe	102
PID 2676 wrote to memory of 4524	2676	csrss.exe	102
PID 2676 wrote to memory of 4524	2676	csrss.exe	102
PID 2676 wrote to memory of 2996	2676	csrss.exe	108
PID 2676 wrote to memory of 2996	2676	csrss.exe	108
PID 2676 wrote to memory of 2996	2676	csrss.exe	108
PID 2676 wrote to memory of 3996	2676	csrss.exe	110
PID 2676 wrote to memory of 3996	2676	csrss.exe	110
PID 2676 wrote to memory of 3996	2676	csrss.exe	110
PID 2676 wrote to memory of 2232	2676	csrss.exe	112
PID 2676 wrote to memory of 2232	2676	csrss.exe	112
PID 3024 wrote to memory of 1696	3024	windefender.exe	118
PID 3024 wrote to memory of 1696	3024	windefender.exe	118
PID 3024 wrote to memory of 1696	3024	windefender.exe	118
PID 1696 wrote to memory of 2828	1696	cmd.exe	119
PID 1696 wrote to memory of 2828	1696	cmd.exe	119
PID 1696 wrote to memory of 2828	1696	cmd.exe	119

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\93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
"C:\Users\Admin\AppData\Local\Temp\93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4608
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3388
- C:\Users\Admin\AppData\Local\Temp\93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.exe
  "C:\Users\Admin\AppData\Local\Temp\93ea8007f890c0e162321b3f011027a84be573e3d187bffdd3f5e9eb2c666f46.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:4464
- - 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:2928
- - 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:1924
  - - 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:4896
- - 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:392
- - 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:4884
- - 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:2676
  - - 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:4524
  - - 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:4188
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:752
  - - 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:2996
  - - 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:3996
  - - 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:2232
  - - 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:4896
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:3024
    - - 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:1696
      - 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:2828
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4464 -s 832
    3⤵
    - Program crash
    PID:1116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4608 -s 664
  2⤵
  - Program crash
  PID:4116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4608 -ip 4608
1⤵
PID:2800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4464 -ip 4464
1⤵
PID:3244

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4844

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_z5n2amsj.vq1.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z5n2amsj.vq1.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 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
MD5 d0c46cad6c0778401e21910bd6b56b70
SHA1 7be418951ea96326aca445b8dfe449b2bfa0dca6
SHA512 057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
MD5 SHA1 SHA512

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