glupteba | 8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af

Analysis

max time kernel
150s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
25/04/2024, 21:43

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General

Target
8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Size 4.1MB
Sample240425-1lay3afd98
SHA256 8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af
MD5 f9b8fd50ea81386e2d0d9c027146e78b
SHA1 816a112656ff2713fef2e0fb85bd75ef2c28c917
SHA512 9af0546dfeeae130ae6edacdeb078b322435c1fb90a88f9af862efe5fad211db8f14dc622591d19ff8b08053e836bcb283c913f1d564fa4a677590380c89f569
SSDEEP 98304:ML1CWDKzOLOwEVDen+CvoiqvVh9u6jAYgUqt:MeQWDA+EohruNUC
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/4416-2-0x0000000005300000-0x0000000005BEB000-memory.dmp	family_glupteba
behavioral2/memory/4416-3-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4416-52-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/4416-54-0x0000000005300000-0x0000000005BEB000-memory.dmp	family_glupteba
behavioral2/memory/3352-57-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/3352-89-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/3352-131-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/3352-152-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-157-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-245-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-256-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-259-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-263-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-267-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-271-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-275-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-279-0x0000000000400000-0x0000000003005000-memory.dmp	family_glupteba
behavioral2/memory/8-283-0x0000000000400000-0x0000000003005000-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
4828	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
8	csrss.exe
2044	injector.exe
396	windefender.exe
3756	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9d8-249.dat	upx
behavioral2/memory/396-254-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3756-260-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3756-268-0x0000000000400000-0x00000000008DF000-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\""	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.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 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

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	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
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	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
File created	C:\Windows\rss\csrss.exe	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe

Launches sc.exe 1 IoCs

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

pid	Process
2964	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
2184	schtasks.exe
2680	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
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,-441 = "Arabian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-334 = "Jordan 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 (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-382 = "South Africa Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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 (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,-2871 = "Magallanes Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-892 = "Morocco Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.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,-2061 = "North Korea Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-132 = "US Eastern Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-271 = "Greenwich Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-982 = "Kamchatka Standard Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2161 = "Altai Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-891 = "Morocco Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-182 = "Mountain Standard Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1871 = "Russia TZ 7 Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1802 = "Line Islands Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.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\@tzres.dll,-2751 = "Tomsk Daylight Time"	windefender.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,-1662 = "Bahia Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-231 = "Hawaiian Daylight Time"	windefender.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,-1861 = "Russia TZ 6 Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.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\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time"	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2184	powershell.exe
2184	powershell.exe
4416	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
4416	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
2380	powershell.exe
2380	powershell.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
1992	powershell.exe
1992	powershell.exe
3784	powershell.exe
3784	powershell.exe
4760	powershell.exe
4760	powershell.exe
3812	powershell.exe
3812	powershell.exe
3120	powershell.exe
3120	powershell.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
8	csrss.exe
8	csrss.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
8	csrss.exe
8	csrss.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
8	csrss.exe
8	csrss.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe
2044	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	powershell.exe
Token: SeDebugPrivilege	4416	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Token: SeImpersonatePrivilege	4416	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
Token: SeDebugPrivilege	2380	powershell.exe
Token: SeDebugPrivilege	1992	powershell.exe
Token: SeDebugPrivilege	3784	powershell.exe
Token: SeDebugPrivilege	4760	powershell.exe
Token: SeDebugPrivilege	3812	powershell.exe
Token: SeDebugPrivilege	3120	powershell.exe
Token: SeSystemEnvironmentPrivilege	8	csrss.exe
Token: SeSecurityPrivilege	2964	sc.exe
Token: SeSecurityPrivilege	2964	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4416 wrote to memory of 2184	4416	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	82
PID 4416 wrote to memory of 2184	4416	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	82
PID 4416 wrote to memory of 2184	4416	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	82
PID 3352 wrote to memory of 2380	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	87
PID 3352 wrote to memory of 2380	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	87
PID 3352 wrote to memory of 2380	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	87
PID 3352 wrote to memory of 1368	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	89
PID 3352 wrote to memory of 1368	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	89
PID 1368 wrote to memory of 4828	1368	cmd.exe	91
PID 1368 wrote to memory of 4828	1368	cmd.exe	91
PID 3352 wrote to memory of 1992	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	92
PID 3352 wrote to memory of 1992	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	92
PID 3352 wrote to memory of 1992	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	92
PID 3352 wrote to memory of 3784	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	94
PID 3352 wrote to memory of 3784	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	94
PID 3352 wrote to memory of 3784	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	94
PID 3352 wrote to memory of 8	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	96
PID 3352 wrote to memory of 8	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	96
PID 3352 wrote to memory of 8	3352	8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe	96
PID 8 wrote to memory of 4760	8	csrss.exe	97
PID 8 wrote to memory of 4760	8	csrss.exe	97
PID 8 wrote to memory of 4760	8	csrss.exe	97
PID 8 wrote to memory of 3812	8	csrss.exe	103
PID 8 wrote to memory of 3812	8	csrss.exe	103
PID 8 wrote to memory of 3812	8	csrss.exe	103
PID 8 wrote to memory of 3120	8	csrss.exe	105
PID 8 wrote to memory of 3120	8	csrss.exe	105
PID 8 wrote to memory of 3120	8	csrss.exe	105
PID 8 wrote to memory of 2044	8	csrss.exe	107
PID 8 wrote to memory of 2044	8	csrss.exe	107
PID 396 wrote to memory of 2372	396	windefender.exe	113
PID 396 wrote to memory of 2372	396	windefender.exe	113
PID 396 wrote to memory of 2372	396	windefender.exe	113
PID 2372 wrote to memory of 2964	2372	cmd.exe	114
PID 2372 wrote to memory of 2964	2372	cmd.exe	114
PID 2372 wrote to memory of 2964	2372	cmd.exe	114

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\8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
"C:\Users\Admin\AppData\Local\Temp\8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4416
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2184
- C:\Users\Admin\AppData\Local\Temp\8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.exe
  "C:\Users\Admin\AppData\Local\Temp\8d8677dd0b68f84b7a39965011c6513ab6030b4a89dcc352b26d3f27d64491af.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:3352
- - 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:2380
- - 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:1368
  - - 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:4828
- - 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:1992
- - 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:3784
- - 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:8
  - - 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:4760
  - - 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:2184
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4016
  - - 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:3812
  - - 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:3120
  - - 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:2044
  - - 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:2680
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:396
    - - 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:2372
      - 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:2964

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3756

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_kyqwgz01.bpz.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kyqwgz01.bpz.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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