glupteba | e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743

Analysis

max time kernel
150s
max time network
148s
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, 22:48

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General

Target
e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Size 4.2MB
Sample240419-2rf8psad8v
SHA256 e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743
MD5 7c5db887e99d14244e2d8616c6229523
SHA1 5b4c40ce8699f97e244fd3e8b7c13d1872308b92
SHA512 fa33743263ffe875009e912895c91716f04b4346f8e519135bd6935a4a8a5b11948f1c431a1afa2242dee6428ae90871d0bd1c52ee36a3240cf7fdaa61e15f99
SSDEEP 98304:f/40EOOAEftLoGWLNDgTXMgGOTrFzBqlMJaGItfGu6:XdVQtLoTZDg5GO9Bqlcn
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 20 IoCs

resource	yara_rule
behavioral2/memory/4908-2-0x00000000041B0000-0x0000000004A9B000-memory.dmp	family_glupteba
behavioral2/memory/4908-3-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/4908-51-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/4908-53-0x00000000041B0000-0x0000000004A9B000-memory.dmp	family_glupteba
behavioral2/memory/2072-55-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/2072-129-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/2072-147-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-246-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-255-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-257-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-259-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-261-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-263-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-265-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-267-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-269-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-271-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-273-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-275-0x0000000000400000-0x0000000001E06000-memory.dmp	family_glupteba
behavioral2/memory/6056-277-0x0000000000400000-0x0000000001E06000-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
3204	netsh.exe

Executes dropped EXE 4 IoCs

pid	Process
6056	csrss.exe
3760	injector.exe
5764	windefender.exe
4808	windefender.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000200000002aa46-249.dat	upx
behavioral2/memory/5764-253-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4808-256-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/4808-260-0x0000000000400000-0x00000000008DF000-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-1-5-21-801878912-692986033-442676226-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-801878912-692986033-442676226-1000\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	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
File created	C:\Windows\rss\csrss.exe	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.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
5000	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
1936	schtasks.exe
5856	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,-1022 = "Bangladesh Standard Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2772 = "Omsk Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	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\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1971 = "Belarus Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-772 = "Montevideo Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-81 = "Atlantic Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.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,-1972 = "Belarus Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-2942 = "Sao Tome 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\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	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,-222 = "Alaskan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-352 = "FLE Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-1912 = "Russia TZ 10 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-341 = "Egypt Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-732 = "Fiji Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-434 = "Georgian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-202 = "US Mountain Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-365 = "Middle East Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@tzres.dll,-771 = "Montevideo Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3156	powershell.exe
3156	powershell.exe
4908	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
4908	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
5892	powershell.exe
5892	powershell.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
3552	powershell.exe
3552	powershell.exe
1840	powershell.exe
1840	powershell.exe
3892	powershell.exe
3892	powershell.exe
1800	powershell.exe
1800	powershell.exe
1440	powershell.exe
1440	powershell.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
6056	csrss.exe
6056	csrss.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
6056	csrss.exe
6056	csrss.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
6056	csrss.exe
6056	csrss.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe
3760	injector.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3156	powershell.exe
Token: SeDebugPrivilege	4908	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Token: SeImpersonatePrivilege	4908	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
Token: SeDebugPrivilege	5892	powershell.exe
Token: SeDebugPrivilege	3552	powershell.exe
Token: SeDebugPrivilege	1840	powershell.exe
Token: SeDebugPrivilege	3892	powershell.exe
Token: SeDebugPrivilege	1800	powershell.exe
Token: SeDebugPrivilege	1440	powershell.exe
Token: SeSystemEnvironmentPrivilege	6056	csrss.exe
Token: SeSecurityPrivilege	5000	sc.exe
Token: SeSecurityPrivilege	5000	sc.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4908 wrote to memory of 3156	4908	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	81
PID 4908 wrote to memory of 3156	4908	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	81
PID 4908 wrote to memory of 3156	4908	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	81
PID 2072 wrote to memory of 5892	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	86
PID 2072 wrote to memory of 5892	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	86
PID 2072 wrote to memory of 5892	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	86
PID 2072 wrote to memory of 4924	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	119
PID 2072 wrote to memory of 4924	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	119
PID 4924 wrote to memory of 3204	4924	cmd.exe	90
PID 4924 wrote to memory of 3204	4924	cmd.exe	90
PID 2072 wrote to memory of 3552	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	91
PID 2072 wrote to memory of 3552	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	91
PID 2072 wrote to memory of 3552	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	91
PID 2072 wrote to memory of 1840	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	93
PID 2072 wrote to memory of 1840	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	93
PID 2072 wrote to memory of 1840	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	93
PID 2072 wrote to memory of 6056	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	95
PID 2072 wrote to memory of 6056	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	95
PID 2072 wrote to memory of 6056	2072	e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe	95
PID 6056 wrote to memory of 3892	6056	csrss.exe	96
PID 6056 wrote to memory of 3892	6056	csrss.exe	96
PID 6056 wrote to memory of 3892	6056	csrss.exe	96
PID 6056 wrote to memory of 1800	6056	csrss.exe	101
PID 6056 wrote to memory of 1800	6056	csrss.exe	101
PID 6056 wrote to memory of 1800	6056	csrss.exe	101
PID 6056 wrote to memory of 1440	6056	csrss.exe	104
PID 6056 wrote to memory of 1440	6056	csrss.exe	104
PID 6056 wrote to memory of 1440	6056	csrss.exe	104
PID 6056 wrote to memory of 3760	6056	csrss.exe	106
PID 6056 wrote to memory of 3760	6056	csrss.exe	106
PID 5764 wrote to memory of 3812	5764	windefender.exe	112
PID 5764 wrote to memory of 3812	5764	windefender.exe	112
PID 5764 wrote to memory of 3812	5764	windefender.exe	112
PID 3812 wrote to memory of 5000	3812	cmd.exe	113
PID 3812 wrote to memory of 5000	3812	cmd.exe	113
PID 3812 wrote to memory of 5000	3812	cmd.exe	113

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\e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
"C:\Users\Admin\AppData\Local\Temp\e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3156
- C:\Users\Admin\AppData\Local\Temp\e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.exe
  "C:\Users\Admin\AppData\Local\Temp\e982cfff440829fddcea5a149f67fe0c519cedd1d80be97002e5c9dff0681743.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:2072
- - 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:5892
- - 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:4924
  - - 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:3204
- - 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:3552
- - 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:1840
- - 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:6056
  - - 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:3892
  - - 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:1936
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4124
  - - 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:1800
  - - 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:1440
  - - 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:3760
  - - 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:5856
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:5764
    - - 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:3812
      - 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:5000

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4808

C:\Windows\system32\BackgroundTransferHost.exe
"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1
1⤵
PID:4924

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_gzzkuggf.bcg.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gzzkuggf.bcg.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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