glupteba | 996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8

Analysis

max time kernel
159s
max time network
166s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
04/04/2024, 23:36

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General

Target
996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Size 4.1MB
Sample240404-3llfxaed75
SHA256 996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8
MD5 4fb86bc9e66985d99377e3988a68227c
SHA1 8e7d9602d4af91c19d7e5768177ea205fa4017af
SHA512 62d7fe3d2df0b52dd2664e93cc285a73f833aeee45358fb3a16464a76c97123b20a1c5424d2482102169857ff440547565eb136545f40734fb7a9f2548b42a48
SSDEEP 98304:xrBssHPQfRhBeAp3gzv4ts728Vi/BudLKgEgSv+F:7eRe4UgBuxbC6
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/1424-2-0x00000000050B0000-0x000000000599B000-memory.dmp	family_glupteba
behavioral2/memory/1424-3-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/1424-26-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/1424-49-0x00000000050B0000-0x000000000599B000-memory.dmp	family_glupteba
behavioral2/memory/1424-55-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/1424-56-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/1716-59-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/1716-63-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/1716-88-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/1716-118-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/1716-120-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/1716-151-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2296-216-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2296-250-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2296-252-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2296-262-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba
behavioral2/memory/2296-265-0x0000000000400000-0x0000000002F3F000-memory.dmp	family_glupteba

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2356	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
2296	csrss.exe
4228	injector.exe
4612	windefender.exe
3392	windefender.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a815-255.dat	upx
behavioral2/memory/4612-260-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3392-263-0x0000000000400000-0x00000000008DF000-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-1-5-21-160263616-143223877-1356318919-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-160263616-143223877-1356318919-1000\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\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
File created	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	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\windefender.exe	csrss.exe
File opened for modification	C:\Windows\rss	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
File created	C:\Windows\rss\csrss.exe	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
File created	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
2092	sc.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
5096	schtasks.exe
3896	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-871 = "Pakistan Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1871 = "Russia TZ 7 Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\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\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2392 = "Aleutian Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.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\Root	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3444	powershell.exe
3444	powershell.exe
1424	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1424	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
4048	powershell.exe
4048	powershell.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
5096	powershell.exe
5096	powershell.exe
4880	powershell.exe
4880	powershell.exe
3420	powershell.exe
3420	powershell.exe
1348	powershell.exe
1348	powershell.exe
1580	powershell.exe
1580	powershell.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
2296	csrss.exe
2296	csrss.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
2296	csrss.exe
2296	csrss.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
2296	csrss.exe
2296	csrss.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe
4228	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3444	powershell.exe
Token: SeDebugPrivilege	1424	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Token: SeImpersonatePrivilege	1424	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
Token: SeDebugPrivilege	4048	powershell.exe
Token: SeDebugPrivilege	5096	powershell.exe
Token: SeDebugPrivilege	4880	powershell.exe
Token: SeDebugPrivilege	3420	powershell.exe
Token: SeDebugPrivilege	1348	powershell.exe
Token: SeDebugPrivilege	1580	powershell.exe
Token: SeSystemEnvironmentPrivilege	2296	csrss.exe
Token: SeSecurityPrivilege	2092	sc.exe
Token: SeSecurityPrivilege	2092	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1424 wrote to memory of 3444	1424	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	80
PID 1424 wrote to memory of 3444	1424	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	80
PID 1424 wrote to memory of 3444	1424	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	80
PID 1716 wrote to memory of 4048	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	85
PID 1716 wrote to memory of 4048	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	85
PID 1716 wrote to memory of 4048	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	85
PID 1716 wrote to memory of 3864	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	87
PID 1716 wrote to memory of 3864	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	87
PID 3864 wrote to memory of 2356	3864	cmd.exe	89
PID 3864 wrote to memory of 2356	3864	cmd.exe	89
PID 1716 wrote to memory of 5096	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	90
PID 1716 wrote to memory of 5096	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	90
PID 1716 wrote to memory of 5096	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	90
PID 1716 wrote to memory of 4880	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	92
PID 1716 wrote to memory of 4880	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	92
PID 1716 wrote to memory of 4880	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	92
PID 1716 wrote to memory of 2296	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	94
PID 1716 wrote to memory of 2296	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	94
PID 1716 wrote to memory of 2296	1716	996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe	94
PID 2296 wrote to memory of 3420	2296	csrss.exe	95
PID 2296 wrote to memory of 3420	2296	csrss.exe	95
PID 2296 wrote to memory of 3420	2296	csrss.exe	95
PID 2296 wrote to memory of 1348	2296	csrss.exe	101
PID 2296 wrote to memory of 1348	2296	csrss.exe	101
PID 2296 wrote to memory of 1348	2296	csrss.exe	101
PID 2296 wrote to memory of 1580	2296	csrss.exe	103
PID 2296 wrote to memory of 1580	2296	csrss.exe	103
PID 2296 wrote to memory of 1580	2296	csrss.exe	103
PID 2296 wrote to memory of 4228	2296	csrss.exe	105
PID 2296 wrote to memory of 4228	2296	csrss.exe	105
PID 4612 wrote to memory of 4872	4612	windefender.exe	111
PID 4612 wrote to memory of 4872	4612	windefender.exe	111
PID 4612 wrote to memory of 4872	4612	windefender.exe	111
PID 4872 wrote to memory of 2092	4872	cmd.exe	112
PID 4872 wrote to memory of 2092	4872	cmd.exe	112
PID 4872 wrote to memory of 2092	4872	cmd.exe	112

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\996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
"C:\Users\Admin\AppData\Local\Temp\996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1424
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3444
- C:\Users\Admin\AppData\Local\Temp\996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.exe
  "C:\Users\Admin\AppData\Local\Temp\996157aa3baa22c197c238545919b6d5e2194e01a445e1143e96fad0abdc23b8.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:1716
- - 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:4048
- - 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:3864
  - - 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:2356
- - 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:5096
- - 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:4880
- - 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:2296
  - - 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:3420
  - - 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:3896
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:656
  - - 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:1348
  - - 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:1580
  - - 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:4228
  - - 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:5096
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:4612
    - - 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:4872
      - 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:2092

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
PID:3392

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_oomrttbu.okg.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oomrttbu.okg.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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