glupteba | 225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898

Analysis

max time kernel
150s
max time network
137s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
19/05/2024, 20:38

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General

Target
225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Size 4.1MB
Sample240519-zexntagg34
SHA256 225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898
MD5 e2fd3f6c0c2dbc7067e3a4fd0431017a
SHA1 7f47fcfab1f58d6edf17f85e90452a60cfae6a1f
SHA512 6ababb4a85e2a4bfdcb9d6da2e68b1446ce8f0c0352ecd3911667b9ae2f23df619c654f683d0b765ca55b5409d8ebbf726f66d432af5b4901cbecb93a80deddd
SSDEEP 98304:77sgfTqZm7fywQIpjGUn+cmloZHued8miXbTsPufBvNI:7zgmDywQg+foZ8mw6SO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion execution loader persistence rootkit

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/3796-2-0x0000000004970000-0x000000000525B000-memory.dmp	family_glupteba
behavioral2/memory/3796-3-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/3796-74-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/3796-99-0x0000000004970000-0x000000000525B000-memory.dmp	family_glupteba
behavioral2/memory/1740-124-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/3796-127-0x0000000000400000-0x0000000000D1C000-memory.dmp	family_glupteba
behavioral2/memory/4296-194-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-202-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-204-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-207-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-209-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-210-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-212-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-215-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-217-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-218-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-220-0x0000000000400000-0x0000000002733000-memory.dmp	family_glupteba
behavioral2/memory/4296-223-0x0000000000400000-0x0000000002733000-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
760	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
4296	csrss.exe
576	injector.exe

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-1-5-21-3433428765-2473475212-4279855560-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3433428765-2473475212-4279855560-1000\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	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
File created	C:\Windows\rss\csrss.exe	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4024	powershell.exe
3912	powershell.exe
3664	powershell.exe
2664	powershell.exe
4184	powershell.exe
3212	powershell.exe
5108	powershell.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
4196	schtasks.exe
4808	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.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 (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2041 = "Eastern Daylight Time (Mexico)"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2511 = "Lord Howe Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.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\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4184	powershell.exe
4184	powershell.exe
3796	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
3796	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
3212	powershell.exe
3212	powershell.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
5108	powershell.exe
5108	powershell.exe
4024	powershell.exe
4024	powershell.exe
3912	powershell.exe
3912	powershell.exe
3664	powershell.exe
3664	powershell.exe
2664	powershell.exe
2664	powershell.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
4296	csrss.exe
576	injector.exe
4296	csrss.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
4296	csrss.exe
4296	csrss.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe
576	injector.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4184	powershell.exe
Token: SeDebugPrivilege	3796	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Token: SeImpersonatePrivilege	3796	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
Token: SeDebugPrivilege	3212	powershell.exe
Token: SeDebugPrivilege	5108	powershell.exe
Token: SeDebugPrivilege	4024	powershell.exe
Token: SeDebugPrivilege	3912	powershell.exe
Token: SeDebugPrivilege	3664	powershell.exe
Token: SeDebugPrivilege	2664	powershell.exe
Token: SeSystemEnvironmentPrivilege	4296	csrss.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3796 wrote to memory of 4184	3796	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	82
PID 3796 wrote to memory of 4184	3796	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	82
PID 3796 wrote to memory of 4184	3796	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	82
PID 1740 wrote to memory of 3212	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	87
PID 1740 wrote to memory of 3212	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	87
PID 1740 wrote to memory of 3212	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	87
PID 1740 wrote to memory of 644	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	89
PID 1740 wrote to memory of 644	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	89
PID 644 wrote to memory of 760	644	cmd.exe	91
PID 644 wrote to memory of 760	644	cmd.exe	91
PID 1740 wrote to memory of 5108	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	92
PID 1740 wrote to memory of 5108	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	92
PID 1740 wrote to memory of 5108	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	92
PID 1740 wrote to memory of 4024	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	94
PID 1740 wrote to memory of 4024	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	94
PID 1740 wrote to memory of 4024	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	94
PID 1740 wrote to memory of 4296	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	96
PID 1740 wrote to memory of 4296	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	96
PID 1740 wrote to memory of 4296	1740	225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe	96
PID 4296 wrote to memory of 3912	4296	csrss.exe	97
PID 4296 wrote to memory of 3912	4296	csrss.exe	97
PID 4296 wrote to memory of 3912	4296	csrss.exe	97
PID 4296 wrote to memory of 3664	4296	csrss.exe	102
PID 4296 wrote to memory of 3664	4296	csrss.exe	102
PID 4296 wrote to memory of 3664	4296	csrss.exe	102
PID 4296 wrote to memory of 2664	4296	csrss.exe	105
PID 4296 wrote to memory of 2664	4296	csrss.exe	105
PID 4296 wrote to memory of 2664	4296	csrss.exe	105
PID 4296 wrote to memory of 576	4296	csrss.exe	107
PID 4296 wrote to memory of 576	4296	csrss.exe	107

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\225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
"C:\Users\Admin\AppData\Local\Temp\225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3796
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4184
- C:\Users\Admin\AppData\Local\Temp\225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.exe
  "C:\Users\Admin\AppData\Local\Temp\225d3470a778ccafe32bc3fc70e5f56668dc3ede3d892bcb0d579d1866bc9898.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:1740
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3212
- - 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:644
  - - 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:760
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5108
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    - Drops file in System32 directory
    - Command and Scripting Interpreter: PowerShell
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4024
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Manipulates WinMonFS driver.
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4296
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3912
  - - 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:4808
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:2904
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3664
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Drops file in System32 directory
      Command and Scripting Interpreter: PowerShell
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2664
  - - 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:576
  - - 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:4196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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_u43vv00z.ljv.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u43vv00z.ljv.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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