amadey | 4b44ce9da2d83d7fbd6238e6350ab35ec8a49b7a286c5270a299aaf41a5568dd

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	1a8911253a58c87f88292cf3345d292838ef8eab.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorgu.exe

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/files/0x000700000002328d-680.dat	UPX
behavioral2/memory/4320-686-0x0000000000400000-0x00000000008DF000-memory.dmp	UPX
behavioral2/memory/3100-690-0x0000000000400000-0x00000000008DF000-memory.dmp	UPX
behavioral2/memory/3100-698-0x0000000000400000-0x00000000008DF000-memory.dmp	UPX

Blocklisted process makes network request 2 IoCs

flow	pid	Process
88	2244	rundll32.exe
92	4332	rundll32.exe

Downloads MZ/PE file

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4072	netsh.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	1a8911253a58c87f88292cf3345d292838ef8eab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1a8911253a58c87f88292cf3345d292838ef8eab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorgu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorgu.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	explorgu.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	newsun.exe

Executes dropped EXE 17 IoCs

pid	Process
776	explorgu.exe
4436	InstallSetup3.exe
1284	BroomSetup.exe
4492	father1.exe
5024	nsnD99A.tmp
4592	lumma123142124.exe
1192	InstallSetup3.exe
2580	newsun.exe
2500	newsun.exe
4388	4767d2e713f2021e8fe856e3ea638b58.exe
3676	download.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
1684	csrss.exe
4796	injector.exe
1908	newsun.exe
4320	windefender.exe
3100	windefender.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\Software\Wine	1a8911253a58c87f88292cf3345d292838ef8eab.exe
Key opened	\REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\Software\Wine	explorgu.exe

Loads dropped DLL 9 IoCs

pid	Process
4436	InstallSetup3.exe
4436	InstallSetup3.exe
4436	InstallSetup3.exe
1084	rundll32.exe
2244	rundll32.exe
4332	rundll32.exe
5024	nsnD99A.tmp
5024	nsnD99A.tmp
4436	InstallSetup3.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000700000002328d-680.dat	upx
behavioral2/memory/4320-686-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3100-690-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3100-698-0x0000000000400000-0x00000000008DF000-memory.dmp	upx

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

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-1-5-21-1712835645-2080934712-2142796781-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	4767d2e713f2021e8fe856e3ea638b58.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\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

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2060	1a8911253a58c87f88292cf3345d292838ef8eab.exe
776	explorgu.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4492 set thread context of 1344	4492	father1.exe	107
PID 4592 set thread context of 2140	4592	lumma123142124.exe	112

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

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	4767d2e713f2021e8fe856e3ea638b58.exe

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\explorgu.job	1a8911253a58c87f88292cf3345d292838ef8eab.exe
File opened for modification	C:\Windows\rss	4767d2e713f2021e8fe856e3ea638b58.exe
File created	C:\Windows\rss\csrss.exe	4767d2e713f2021e8fe856e3ea638b58.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
1976	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4336	2140	WerFault.exe	112
2500	5024	WerFault.exe	106

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	nsnD99A.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	nsnD99A.tmp

Creates scheduled task(s) 1 TTPs 4 IoCs

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

persistence

Scheduled Task/Job

pid	Process
1904	schtasks.exe
3632	schtasks.exe
4392	schtasks.exe
2912	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2612 = "Bougainville Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-171 = "Central Daylight Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	4767d2e713f2021e8fe856e3ea638b58.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	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\22\52C64B7E\@tzres.dll,-2161 = "Altai Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-181 = "Mountain Daylight Time (Mexico)"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	4767d2e713f2021e8fe856e3ea638b58.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\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\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	4767d2e713f2021e8fe856e3ea638b58.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
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1832 = "Russia TZ 2 Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time"	4767d2e713f2021e8fe856e3ea638b58.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\22\52C64B7E\@tzres.dll,-342 = "Egypt Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2391 = "Aleutian Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time"	4767d2e713f2021e8fe856e3ea638b58.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	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\22\52C64B7E\@tzres.dll,-931 = "Coordinated Universal Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1721 = "Libya Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1932 = "Russia TZ 11 Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\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\TrustedPeople\CTLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-492 = "India Standard Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-721 = "Central Pacific Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-982 = "Kamchatka Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	4767d2e713f2021e8fe856e3ea638b58.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	4767d2e713f2021e8fe856e3ea638b58.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-2451 = "Saint Pierre Daylight Time"	windefender.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	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\22\52C64B7E\@tzres.dll,-2892 = "Sudan Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time"	4767d2e713f2021e8fe856e3ea638b58.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	4767d2e713f2021e8fe856e3ea638b58.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	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\22\52C64B7E\@tzres.dll,-1662 = "Bahia Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	4767d2e713f2021e8fe856e3ea638b58.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-252 = "Dateline Standard Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-71 = "Newfoundland Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	windefender.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time"	4767d2e713f2021e8fe856e3ea638b58.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\22\52C64B7E\@tzres.dll,-105 = "Central Brazilian Standard Time"	windefender.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2060	1a8911253a58c87f88292cf3345d292838ef8eab.exe
2060	1a8911253a58c87f88292cf3345d292838ef8eab.exe
776	explorgu.exe
776	explorgu.exe
2244	rundll32.exe
2244	rundll32.exe
2244	rundll32.exe
2244	rundll32.exe
2244	rundll32.exe
2244	rundll32.exe
1344	RegAsm.exe
1344	RegAsm.exe
5024	nsnD99A.tmp
5024	nsnD99A.tmp
2244	rundll32.exe
2244	rundll32.exe
2244	rundll32.exe
2244	rundll32.exe
4776	powershell.exe
4776	powershell.exe
4776	powershell.exe
5052	powershell.exe
5052	powershell.exe
5052	powershell.exe
4388	4767d2e713f2021e8fe856e3ea638b58.exe
4388	4767d2e713f2021e8fe856e3ea638b58.exe
5024	nsnD99A.tmp
5024	nsnD99A.tmp
1344	RegAsm.exe
1344	RegAsm.exe
1344	RegAsm.exe
1344	RegAsm.exe
1856	powershell.exe
1856	powershell.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4328	4767d2e713f2021e8fe856e3ea638b58.exe
4740	powershell.exe
4740	powershell.exe
3444	powershell.exe
3444	powershell.exe
1952	powershell.exe
1952	powershell.exe
3628	powershell.exe
3628	powershell.exe
3004	powershell.exe
3004	powershell.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
4796	injector.exe
1684	csrss.exe
1684	csrss.exe
4796	injector.exe
4796	injector.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	1344	RegAsm.exe
Token: SeDebugPrivilege	4776	powershell.exe
Token: SeDebugPrivilege	5052	powershell.exe
Token: SeDebugPrivilege	4388	4767d2e713f2021e8fe856e3ea638b58.exe
Token: SeImpersonatePrivilege	4388	4767d2e713f2021e8fe856e3ea638b58.exe
Token: SeDebugPrivilege	1856	powershell.exe
Token: SeDebugPrivilege	4740	powershell.exe
Token: SeDebugPrivilege	3444	powershell.exe
Token: SeDebugPrivilege	1952	powershell.exe
Token: SeDebugPrivilege	3628	powershell.exe
Token: SeDebugPrivilege	3004	powershell.exe
Token: SeSystemEnvironmentPrivilege	1684	csrss.exe
Token: SeSecurityPrivilege	1976	sc.exe
Token: SeSecurityPrivilege	1976	sc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1284	BroomSetup.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 776 wrote to memory of 4436	776	explorgu.exe	98
PID 776 wrote to memory of 4436	776	explorgu.exe	98
PID 776 wrote to memory of 4436	776	explorgu.exe	98
PID 4436 wrote to memory of 1284	4436	InstallSetup3.exe	99
PID 4436 wrote to memory of 1284	4436	InstallSetup3.exe	99
PID 4436 wrote to memory of 1284	4436	InstallSetup3.exe	99
PID 1284 wrote to memory of 2156	1284	BroomSetup.exe	100
PID 1284 wrote to memory of 2156	1284	BroomSetup.exe	100
PID 1284 wrote to memory of 2156	1284	BroomSetup.exe	100
PID 2156 wrote to memory of 4424	2156	cmd.exe	102
PID 2156 wrote to memory of 4424	2156	cmd.exe	102
PID 2156 wrote to memory of 4424	2156	cmd.exe	102
PID 2156 wrote to memory of 1904	2156	cmd.exe	103
PID 2156 wrote to memory of 1904	2156	cmd.exe	103
PID 2156 wrote to memory of 1904	2156	cmd.exe	103
PID 776 wrote to memory of 4492	776	explorgu.exe	104
PID 776 wrote to memory of 4492	776	explorgu.exe	104
PID 776 wrote to memory of 4492	776	explorgu.exe	104
PID 4436 wrote to memory of 5024	4436	InstallSetup3.exe	106
PID 4436 wrote to memory of 5024	4436	InstallSetup3.exe	106
PID 4436 wrote to memory of 5024	4436	InstallSetup3.exe	106
PID 4492 wrote to memory of 1344	4492	father1.exe	107
PID 4492 wrote to memory of 1344	4492	father1.exe	107
PID 4492 wrote to memory of 1344	4492	father1.exe	107
PID 4492 wrote to memory of 1344	4492	father1.exe	107
PID 4492 wrote to memory of 1344	4492	father1.exe	107
PID 4492 wrote to memory of 1344	4492	father1.exe	107
PID 4492 wrote to memory of 1344	4492	father1.exe	107
PID 4492 wrote to memory of 1344	4492	father1.exe	107
PID 776 wrote to memory of 4592	776	explorgu.exe	108
PID 776 wrote to memory of 4592	776	explorgu.exe	108
PID 776 wrote to memory of 4592	776	explorgu.exe	108
PID 776 wrote to memory of 1192	776	explorgu.exe	110
PID 776 wrote to memory of 1192	776	explorgu.exe	110
PID 776 wrote to memory of 1192	776	explorgu.exe	110
PID 776 wrote to memory of 2580	776	explorgu.exe	111
PID 776 wrote to memory of 2580	776	explorgu.exe	111
PID 776 wrote to memory of 2580	776	explorgu.exe	111
PID 4592 wrote to memory of 2140	4592	lumma123142124.exe	112
PID 4592 wrote to memory of 2140	4592	lumma123142124.exe	112
PID 4592 wrote to memory of 2140	4592	lumma123142124.exe	112
PID 4592 wrote to memory of 2140	4592	lumma123142124.exe	112
PID 4592 wrote to memory of 2140	4592	lumma123142124.exe	112
PID 4592 wrote to memory of 2140	4592	lumma123142124.exe	112
PID 4592 wrote to memory of 2140	4592	lumma123142124.exe	112
PID 4592 wrote to memory of 2140	4592	lumma123142124.exe	112
PID 4592 wrote to memory of 2140	4592	lumma123142124.exe	112
PID 2580 wrote to memory of 3632	2580	newsun.exe	113
PID 2580 wrote to memory of 3632	2580	newsun.exe	113
PID 2580 wrote to memory of 3632	2580	newsun.exe	113
PID 776 wrote to memory of 2500	776	explorgu.exe	115
PID 776 wrote to memory of 2500	776	explorgu.exe	115
PID 776 wrote to memory of 2500	776	explorgu.exe	115
PID 2580 wrote to memory of 4388	2580	newsun.exe	117
PID 2580 wrote to memory of 4388	2580	newsun.exe	117
PID 2580 wrote to memory of 4388	2580	newsun.exe	117
PID 776 wrote to memory of 1084	776	explorgu.exe	119
PID 776 wrote to memory of 1084	776	explorgu.exe	119
PID 776 wrote to memory of 1084	776	explorgu.exe	119
PID 1084 wrote to memory of 2244	1084	rundll32.exe	120
PID 1084 wrote to memory of 2244	1084	rundll32.exe	120
PID 2244 wrote to memory of 4332	2244	rundll32.exe	128
PID 2244 wrote to memory of 4332	2244	rundll32.exe	128
PID 2580 wrote to memory of 3676	2580	newsun.exe	123

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\1a8911253a58c87f88292cf3345d292838ef8eab.exe
"C:\Users\Admin\AppData\Local\Temp\1a8911253a58c87f88292cf3345d292838ef8eab.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:2060

C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:776
- C:\Users\Admin\AppData\Local\Temp\1000703001\InstallSetup3.exe
  "C:\Users\Admin\AppData\Local\Temp\1000703001\InstallSetup3.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:4436
- - C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
    C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1284
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2156
    - - C:\Windows\SysWOW64\chcp.com
        
        chcp 1251
        5⤵
        
        PID:4424
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F
        5⤵
        Creates scheduled task(s)
        
        PID:1904
- - C:\Users\Admin\AppData\Local\Temp\nsnD99A.tmp
    C:\Users\Admin\AppData\Local\Temp\nsnD99A.tmp
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:5024
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5024 -s 1016
      4⤵
      Program crash
      PID:2500
- C:\Users\Admin\AppData\Local\Temp\1000704001\father1.exe
  "C:\Users\Admin\AppData\Local\Temp\1000704001\father1.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4492
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1344
- C:\Users\Admin\AppData\Local\Temp\1000705001\lumma123142124.exe
  "C:\Users\Admin\AppData\Local\Temp\1000705001\lumma123142124.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4592
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:2140
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 1200
      4⤵
      Program crash
      PID:4336
- C:\Users\Admin\AppData\Local\Temp\1000706001\InstallSetup3.exe
  "C:\Users\Admin\AppData\Local\Temp\1000706001\InstallSetup3.exe"
  2⤵
  - Executes dropped EXE
  PID:1192
- C:\Users\Admin\AppData\Local\Temp\1000707001\newsun.exe
  "C:\Users\Admin\AppData\Local\Temp\1000707001\newsun.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2580
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN newsun.exe /TR "C:\Users\Admin\AppData\Local\Temp\1000707001\newsun.exe" /F
    3⤵
    - Creates scheduled task(s)
    PID:3632
- - C:\Users\Admin\AppData\Local\Temp\1000137001\4767d2e713f2021e8fe856e3ea638b58.exe
    "C:\Users\Admin\AppData\Local\Temp\1000137001\4767d2e713f2021e8fe856e3ea638b58.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4388
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:5052
  - - C:\Users\Admin\AppData\Local\Temp\1000137001\4767d2e713f2021e8fe856e3ea638b58.exe
      "C:\Users\Admin\AppData\Local\Temp\1000137001\4767d2e713f2021e8fe856e3ea638b58.exe"
      4⤵
      Executes dropped EXE
      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
      PID:4328
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -nologo -noprofile
        5⤵
        Drops file in System32 directory
        Modifies data under HKEY_USERS
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1856
    - - 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"
        5⤵
        
        PID:5080
      - C:\Windows\system32\netsh.exe
        
        netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
        6⤵
        Modifies Windows Firewall
        
        PID:4072
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -nologo -noprofile
        5⤵
        Drops file in System32 directory
        Modifies data under HKEY_USERS
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4740
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -nologo -noprofile
        5⤵
        Drops file in System32 directory
        Modifies data under HKEY_USERS
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3444
    - - C:\Windows\rss\csrss.exe
        
        C:\Windows\rss\csrss.exe
        5⤵
        Executes dropped EXE
        Adds Run key to start application
        Manipulates WinMonFS driver.
        Drops file in Windows directory
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1684
      - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -nologo -noprofile
        6⤵
        Drops file in System32 directory
        Modifies data under HKEY_USERS
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1952
      - C:\Windows\SYSTEM32\schtasks.exe
        
        schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
        6⤵
        Creates scheduled task(s)
        
        PID:4392
      - C:\Windows\SYSTEM32\schtasks.exe
        
        schtasks /delete /tn ScheduledUpdate /f
        6⤵
        
        PID:1252
      - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -nologo -noprofile
        6⤵
        Drops file in System32 directory
        Modifies data under HKEY_USERS
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3628
      - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -nologo -noprofile
        6⤵
        Drops file in System32 directory
        Modifies data under HKEY_USERS
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3004
      - 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
        6⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        
        PID:4796
      - C:\Windows\SYSTEM32\schtasks.exe
        
        schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
        6⤵
        Creates scheduled task(s)
        
        PID:2912
      - C:\Windows\windefender.exe
        
        "C:\Windows\windefender.exe"
        6⤵
        Executes dropped EXE
        
        PID:4320
        
        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)
        7⤵
        
        PID:2264
        
        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)
        8⤵
        Launches sc.exe
        Suspicious use of AdjustPrivilegeToken
        
        PID:1976
- - C:\Users\Admin\AppData\Local\Temp\1000138001\download.exe
    "C:\Users\Admin\AppData\Local\Temp\1000138001\download.exe"
    3⤵
    - Executes dropped EXE
    PID:3676
- C:\Users\Admin\AppData\Local\Temp\1000708001\newsun.exe
  "C:\Users\Admin\AppData\Local\Temp\1000708001\newsun.exe"
  2⤵
  - Executes dropped EXE
  PID:2500
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1084
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2244
  - - C:\Windows\system32\netsh.exe
      netsh wlan show profiles
      4⤵
      PID:4332
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\712835645208_Desktop.zip' -CompressionLevel Optimal
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4776
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\clip64.dll, Main
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  PID:4332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2140 -ip 2140
1⤵
PID:3876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 5024 -ip 5024
1⤵
PID:1348

C:\Users\Admin\AppData\Local\Temp\1000707001\newsun.exe
C:\Users\Admin\AppData\Local\Temp\1000707001\newsun.exe
1⤵
- Executes dropped EXE
PID:1908

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

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

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

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion