glupteba | 0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a

Analysis

max time kernel
143s
max time network
158s
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, 00:29

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General

Target
0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Size 4.2MB
Sample240419-asz9esbc33
SHA256 0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a
MD5 a1ba7703972b944f80457568e342ea46
SHA1 73ff7f896b756cc66eab3dd549e029408ae5b12b
SHA512 ca9dae5cf0c7d129ec2412419703d5452496abaa94159b1bfff8c6749ce9de573eb04516e93d8d323ccd28e2ad9d33b89adc515395c08726603ffd8ac8ec61df
SSDEEP 98304:+bvDuo/zvoC5HERRwr8YNEXJ0TS4JBXxT3BRfe7gLCxccCwfp3PGPzDBAeGjYAe:+nBoCproYNEXJ0O+Xpe7jrRPGnBARjfe
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba discovery dropper evasion loader persistence

Malware Config

Signatures

Glupteba
Glupteba is a modular loader written in Golang with various components.
loader dropper glupteba

Glupteba payload 15 IoCs

resource	yara_rule
behavioral2/memory/1008-2-0x00000000052D0000-0x0000000005BBB000-memory.dmp	family_glupteba
behavioral2/memory/1008-3-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1008-4-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1008-27-0x00000000052D0000-0x0000000005BBB000-memory.dmp	family_glupteba
behavioral2/memory/1008-31-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1008-60-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1008-61-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1188-64-0x0000000005150000-0x0000000005A3B000-memory.dmp	family_glupteba
behavioral2/memory/1188-65-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1188-79-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1188-98-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1188-150-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1188-157-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1912-223-0x0000000000400000-0x0000000003009000-memory.dmp	family_glupteba
behavioral2/memory/1912-255-0x0000000000400000-0x0000000003009000-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
3204	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
1912	csrss.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2516240262-2296879883-3965305654-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.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

Drops file in System32 directory 6 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 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	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\rss	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
File created	C:\Windows\rss\csrss.exe	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2000	1008	WerFault.exe	79

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
3428	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-291 = "Central European Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-362 = "GTB Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-691 = "Tasmania Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2891 = "Sudan Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.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\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.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\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
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,-832 = "SA Eastern Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.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\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.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,-492 = "India Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	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\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	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\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.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\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
2040	powershell.exe
2040	powershell.exe
1008	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1008	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
4756	powershell.exe
4756	powershell.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
4856	powershell.exe
4856	powershell.exe
2580	powershell.exe
2580	powershell.exe
3756	powershell.exe
3756	powershell.exe
3896	powershell.exe
3896	powershell.exe
4264	powershell.exe
4264	powershell.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2040	powershell.exe
Token: SeDebugPrivilege	1008	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Token: SeImpersonatePrivilege	1008	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
Token: SeDebugPrivilege	4756	powershell.exe
Token: SeDebugPrivilege	4856	powershell.exe
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	3756	powershell.exe
Token: SeDebugPrivilege	3896	powershell.exe
Token: SeDebugPrivilege	4264	powershell.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1008 wrote to memory of 2040	1008	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	82
PID 1008 wrote to memory of 2040	1008	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	82
PID 1008 wrote to memory of 2040	1008	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	82
PID 1188 wrote to memory of 4756	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	90
PID 1188 wrote to memory of 4756	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	90
PID 1188 wrote to memory of 4756	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	90
PID 1188 wrote to memory of 1028	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	92
PID 1188 wrote to memory of 1028	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	92
PID 1028 wrote to memory of 3204	1028	cmd.exe	94
PID 1028 wrote to memory of 3204	1028	cmd.exe	94
PID 1188 wrote to memory of 4856	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	95
PID 1188 wrote to memory of 4856	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	95
PID 1188 wrote to memory of 4856	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	95
PID 1188 wrote to memory of 2580	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	97
PID 1188 wrote to memory of 2580	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	97
PID 1188 wrote to memory of 2580	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	97
PID 1188 wrote to memory of 1912	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	99
PID 1188 wrote to memory of 1912	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	99
PID 1188 wrote to memory of 1912	1188	0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe	99
PID 1912 wrote to memory of 3756	1912	csrss.exe	100
PID 1912 wrote to memory of 3756	1912	csrss.exe	100
PID 1912 wrote to memory of 3756	1912	csrss.exe	100
PID 1912 wrote to memory of 3896	1912	csrss.exe	106
PID 1912 wrote to memory of 3896	1912	csrss.exe	106
PID 1912 wrote to memory of 3896	1912	csrss.exe	106
PID 1912 wrote to memory of 4264	1912	csrss.exe	108
PID 1912 wrote to memory of 4264	1912	csrss.exe	108
PID 1912 wrote to memory of 4264	1912	csrss.exe	108

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\0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
"C:\Users\Admin\AppData\Local\Temp\0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1008
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2040
- C:\Users\Admin\AppData\Local\Temp\0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.exe
  "C:\Users\Admin\AppData\Local\Temp\0c965a2d8dd9953f5241e79f8707361a3e1d49e0292c44006b99ac1a14e4139a.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:1188
- - 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:4756
- - 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:1028
  - - 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:4856
- - 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:2580
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1912
  - - 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:3756
  - - 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:3428
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:4880
  - - 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:3896
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Modifies data under HKEY_USERS
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4264
  - - 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⤵
      PID:1996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1008 -s 796
  2⤵
  - Program crash
  PID:2000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1008 -ip 1008
1⤵
PID:4192

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_ka3pbhby.ukn.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ka3pbhby.ukn.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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