glupteba | fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42

Analysis

max time kernel
150s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
19/04/2024, 01:12

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General

Target
fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Size 4.2MB
Sample240419-bklazacc25
SHA256 fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42
MD5 507b556441b8b98feab9a779bfe42896
SHA1 c34cdf570279b8299ac8b96f481e0651136c7660
SHA512 fbf1020191376dd6d7b5e7feb44b93e02ac0f60d9c69f53722b42b825c7706aef3b97a166c2ee0f452e05631062fd1a472b42aa71d9b0d8506a26cfbc2ace099
SSDEEP 98304:ieU9Bh0ZpWG7460rhxj0FMVy+9LgCbGoD1OyJCOsGUxDW88A2xBQ0l:C9j0jWE+llaMVy+90CpOuCOqDWtA2xBJ
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/1188-2-0x0000000005120000-0x0000000005A0B000-memory.dmp	family_glupteba
behavioral2/memory/1188-3-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1188-51-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1188-53-0x0000000005120000-0x0000000005A0B000-memory.dmp	family_glupteba
behavioral2/memory/4876-55-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/4876-87-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/4876-102-0x00000000034A0000-0x000000000389E000-memory.dmp	family_glupteba
behavioral2/memory/4876-113-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/4876-148-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/2200-161-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/2200-245-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/2200-253-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/2200-254-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/2200-256-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/2200-258-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/2200-260-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/2200-262-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/2200-265-0x0000000000400000-0x0000000003009000-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
788	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
2200	csrss.exe
1780	injector.exe
1068	windefender.exe
4904	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002a9bc-248.dat	upx
behavioral2/memory/1068-252-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4904-255-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4904-259-0x0000000000400000-0x00000000008DF000-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-1-5-21-3777591257-2471171023-3629228286-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3777591257-2471171023-3629228286-1000\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	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
File created	C:\Windows\rss\csrss.exe	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.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
3720	sc.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2480	1188	WerFault.exe	79
5012	4876	WerFault.exe	87

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
2112	schtasks.exe
1756	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	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\26\52C64B7E\@tzres.dll,-912 = "Mauritius Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	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,-2612 = "Bougainville Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-662 = "Cen. Australia Standard Time"	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
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-601 = "Taipei Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1871 = "Russia TZ 7 Daylight Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-731 = "Fiji Daylight 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,-931 = "Coordinated Universal Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-151 = "Central America Daylight Time"	windefender.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\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.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,-214 = "Pacific Daylight Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-571 = "China Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2531 = "Chatham Islands Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-192 = "Mountain Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1872 = "Russia TZ 7 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-962 = "Paraguay Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-302 = "Romance 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"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2141 = "Transbaikal Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2182 = "Astrakhan Standard Time"	windefender.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,-3142 = "South Sudan Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2002 = "Cabo Verde Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-364 = "Middle East Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2451 = "Saint Pierre Daylight Time"	windefender.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\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2512 = "Lord Howe Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-602 = "Taipei Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-41 = "E. South America Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1721 = "Libya Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2511 = "Lord Howe Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-391 = "Arab Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-651 = "AUS Central Daylight Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2604	powershell.exe
2604	powershell.exe
1188	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
1188	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
2804	powershell.exe
2804	powershell.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
4372	powershell.exe
4372	powershell.exe
5084	powershell.exe
5084	powershell.exe
2512	powershell.exe
2512	powershell.exe
1272	powershell.exe
1272	powershell.exe
1580	powershell.exe
1580	powershell.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
2200	csrss.exe
2200	csrss.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
2200	csrss.exe
2200	csrss.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
2200	csrss.exe
2200	csrss.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe
1780	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	powershell.exe
Token: SeDebugPrivilege	1188	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Token: SeImpersonatePrivilege	1188	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
Token: SeDebugPrivilege	2804	powershell.exe
Token: SeDebugPrivilege	4372	powershell.exe
Token: SeDebugPrivilege	5084	powershell.exe
Token: SeDebugPrivilege	2512	powershell.exe
Token: SeDebugPrivilege	1272	powershell.exe
Token: SeDebugPrivilege	1580	powershell.exe
Token: SeSystemEnvironmentPrivilege	2200	csrss.exe
Token: SeSecurityPrivilege	3720	sc.exe
Token: SeSecurityPrivilege	3720	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1188 wrote to memory of 2604	1188	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	83
PID 1188 wrote to memory of 2604	1188	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	83
PID 1188 wrote to memory of 2604	1188	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	83
PID 4876 wrote to memory of 2804	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	91
PID 4876 wrote to memory of 2804	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	91
PID 4876 wrote to memory of 2804	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	91
PID 4876 wrote to memory of 3708	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	93
PID 4876 wrote to memory of 3708	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	93
PID 3708 wrote to memory of 788	3708	cmd.exe	95
PID 3708 wrote to memory of 788	3708	cmd.exe	95
PID 4876 wrote to memory of 4372	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	96
PID 4876 wrote to memory of 4372	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	96
PID 4876 wrote to memory of 4372	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	96
PID 4876 wrote to memory of 5084	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	98
PID 4876 wrote to memory of 5084	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	98
PID 4876 wrote to memory of 5084	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	98
PID 4876 wrote to memory of 2200	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	100
PID 4876 wrote to memory of 2200	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	100
PID 4876 wrote to memory of 2200	4876	fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe	100
PID 2200 wrote to memory of 2512	2200	csrss.exe	103
PID 2200 wrote to memory of 2512	2200	csrss.exe	103
PID 2200 wrote to memory of 2512	2200	csrss.exe	103
PID 2200 wrote to memory of 1272	2200	csrss.exe	109
PID 2200 wrote to memory of 1272	2200	csrss.exe	109
PID 2200 wrote to memory of 1272	2200	csrss.exe	109
PID 2200 wrote to memory of 1580	2200	csrss.exe	111
PID 2200 wrote to memory of 1580	2200	csrss.exe	111
PID 2200 wrote to memory of 1580	2200	csrss.exe	111
PID 2200 wrote to memory of 1780	2200	csrss.exe	113
PID 2200 wrote to memory of 1780	2200	csrss.exe	113
PID 1068 wrote to memory of 4232	1068	windefender.exe	119
PID 1068 wrote to memory of 4232	1068	windefender.exe	119
PID 1068 wrote to memory of 4232	1068	windefender.exe	119
PID 4232 wrote to memory of 3720	4232	cmd.exe	120
PID 4232 wrote to memory of 3720	4232	cmd.exe	120
PID 4232 wrote to memory of 3720	4232	cmd.exe	120

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\fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
"C:\Users\Admin\AppData\Local\Temp\fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2604
- C:\Users\Admin\AppData\Local\Temp\fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.exe
  "C:\Users\Admin\AppData\Local\Temp\fdd9d005bfa848e7377bf7434b9ad693f686ddc7eabf5fa389a80bd56ba88d42.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:4876
- - 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:2804
- - 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:3708
  - - 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:788
- - 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:4372
- - 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:5084
- - 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:2200
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2512
  - - C:\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:2112
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1620
  - - 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:1272
  - - 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:1780
  - - 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:1756
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1068
    - - 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:4232
      - 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:3720
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 624
    3⤵
    - Program crash
    PID:5012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1188 -s 860
  2⤵
  - Program crash
  PID:2480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1188 -ip 1188
1⤵
PID:3672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4876 -ip 4876
1⤵
PID:2424

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4904

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_akgi0wjy.3wp.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_akgi0wjy.3wp.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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