glupteba | 3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190

Analysis

max time kernel
149s
max time network
128s
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, 16:25

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General

Target
3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Size 4.1MB
Sample240424-tw8jradb76
SHA256 3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190
MD5 80cb3c40ae24ca8b6eb6a21cf4d44d6f
SHA1 18d66c082a61fa3ec2a72db2aed8c4af5cf7f9c0
SHA512 a430b885277d566f18a3db8f4c72351181d4728f851c4e1ad7484e48e2fbf6a04e1ec5e391cfd27f42a894c134f1e4d63b62c4090e7fd3bdb6048643d4b451df
SSDEEP 98304:dFddrpuoRE7tl1yJ8vae/QmLpm2XHwIZYQzHZc5g5rp30lCUZ:nLdBQ1yJ8Sedm2XHUQNc5XgQ
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 18 IoCs

resource	yara_rule
behavioral2/memory/2408-2-0x00000000065C0000-0x0000000006EAB000-memory.dmp	family_glupteba
behavioral2/memory/3500-52-0x00000000065A0000-0x0000000006E8B000-memory.dmp	family_glupteba
behavioral2/memory/2408-50-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/2408-53-0x00000000065C0000-0x0000000006EAB000-memory.dmp	family_glupteba
behavioral2/memory/3500-142-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-238-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-247-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-248-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-251-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-253-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-255-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-257-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-259-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-260-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-263-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-265-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-267-0x0000000000400000-0x0000000004416000-memory.dmp	family_glupteba
behavioral2/memory/1424-269-0x0000000000400000-0x0000000004416000-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
4240	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
1424	csrss.exe
2236	injector.exe
4120	windefender.exe
4652	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9aa-241.dat	upx
behavioral2/memory/4120-246-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4652-249-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4652-252-0x0000000000400000-0x00000000008DF000-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-1-5-21-3263309122-2820180308-3568046652-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3263309122-2820180308-3568046652-1000\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	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
File created	C:\Windows\rss\csrss.exe	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.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
4688	sc.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2888	2408	WerFault.exe	78
1972	3500	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
1548	schtasks.exe
4236	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,-252 = "Dateline Standard Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.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,-2432 = "Cuba Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1842 = "Russia TZ 4 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1662 = "Bahia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-302 = "Romance Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	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,-241 = "Samoa Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2611 = "Bougainville Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-32 = "Mid-Atlantic Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2392 = "Aleutian Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-631 = "Tokyo Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	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\@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.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,-72 = "Newfoundland Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-222 = "Alaskan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-172 = "Central Standard Time (Mexico)"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2371 = "Easter Island Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2511 = "Lord Howe Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-791 = "SA Western Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	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\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.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,-562 = "SE Asia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time"	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	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,-282 = "Central Europe Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-721 = "Central Pacific Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-982 = "Kamchatka Standard Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4152	powershell.exe
4152	powershell.exe
2408	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
2408	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
1940	powershell.exe
1940	powershell.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
4180	powershell.exe
4180	powershell.exe
2112	powershell.exe
2112	powershell.exe
4352	powershell.exe
4352	powershell.exe
4864	powershell.exe
4864	powershell.exe
1468	powershell.exe
1468	powershell.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
1424	csrss.exe
1424	csrss.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
1424	csrss.exe
1424	csrss.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
1424	csrss.exe
1424	csrss.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe
2236	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	4152	powershell.exe
Token: SeDebugPrivilege	2408	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Token: SeImpersonatePrivilege	2408	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
Token: SeDebugPrivilege	1940	powershell.exe
Token: SeDebugPrivilege	4180	powershell.exe
Token: SeDebugPrivilege	2112	powershell.exe
Token: SeDebugPrivilege	4352	powershell.exe
Token: SeDebugPrivilege	4864	powershell.exe
Token: SeDebugPrivilege	1468	powershell.exe
Token: SeSystemEnvironmentPrivilege	1424	csrss.exe
Token: SeSecurityPrivilege	4688	sc.exe
Token: SeSecurityPrivilege	4688	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 4152	2408	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	81
PID 2408 wrote to memory of 4152	2408	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	81
PID 2408 wrote to memory of 4152	2408	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	81
PID 3500 wrote to memory of 1940	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	90
PID 3500 wrote to memory of 1940	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	90
PID 3500 wrote to memory of 1940	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	90
PID 3500 wrote to memory of 2772	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	92
PID 3500 wrote to memory of 2772	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	92
PID 2772 wrote to memory of 4240	2772	cmd.exe	94
PID 2772 wrote to memory of 4240	2772	cmd.exe	94
PID 3500 wrote to memory of 4180	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	95
PID 3500 wrote to memory of 4180	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	95
PID 3500 wrote to memory of 4180	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	95
PID 3500 wrote to memory of 2112	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	97
PID 3500 wrote to memory of 2112	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	97
PID 3500 wrote to memory of 2112	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	97
PID 3500 wrote to memory of 1424	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	99
PID 3500 wrote to memory of 1424	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	99
PID 3500 wrote to memory of 1424	3500	3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe	99
PID 1424 wrote to memory of 4352	1424	csrss.exe	102
PID 1424 wrote to memory of 4352	1424	csrss.exe	102
PID 1424 wrote to memory of 4352	1424	csrss.exe	102
PID 1424 wrote to memory of 4864	1424	csrss.exe	108
PID 1424 wrote to memory of 4864	1424	csrss.exe	108
PID 1424 wrote to memory of 4864	1424	csrss.exe	108
PID 1424 wrote to memory of 1468	1424	csrss.exe	110
PID 1424 wrote to memory of 1468	1424	csrss.exe	110
PID 1424 wrote to memory of 1468	1424	csrss.exe	110
PID 1424 wrote to memory of 2236	1424	csrss.exe	112
PID 1424 wrote to memory of 2236	1424	csrss.exe	112
PID 4120 wrote to memory of 4124	4120	windefender.exe	118
PID 4120 wrote to memory of 4124	4120	windefender.exe	118
PID 4120 wrote to memory of 4124	4120	windefender.exe	118
PID 4124 wrote to memory of 4688	4124	cmd.exe	119
PID 4124 wrote to memory of 4688	4124	cmd.exe	119
PID 4124 wrote to memory of 4688	4124	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\3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
"C:\Users\Admin\AppData\Local\Temp\3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4152
- C:\Users\Admin\AppData\Local\Temp\3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.exe
  "C:\Users\Admin\AppData\Local\Temp\3c817731f1579a798ad9872bcf123896afcca578700566726ba29916c6fc0190.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:3500
- - 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:1940
- - 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:2772
  - - 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:4240
- - 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:4180
- - 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:2112
- - 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:1424
  - - 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:4352
  - - 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:1548
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1608
  - - 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:4864
  - - 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:1468
  - - 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:2236
  - - 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:4236
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:4120
    - - 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:4124
      - 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:4688
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3500 -s 944
    3⤵
    - Program crash
    PID:1972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2408 -s 852
  2⤵
  - Program crash
  PID:2888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2408 -ip 2408
1⤵
PID:1256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3500 -ip 3500
1⤵
PID:2964

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4652

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_0t5rxtci.w3s.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0t5rxtci.w3s.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 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
MD5 ac4917a885cf6050b1a483e4bc4d2ea5
SHA1 b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA512 092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d
MD5 SHA1 SHA512

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