glupteba | cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371

General

Target

cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Size

4.1MB
MD5

22292eb2b0096ec984867034eed55e8a
SHA1

4408e912caa55816ae033cd9ffab3d6e6eb1d817
SHA256

cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371
SHA512

c50fddadc7690d4d657aac0c3a3a3ae25f84dbca30f1be13144455265cabc932524263f6f5f80d5d8d2f4bcb9bb4157989cbc7c906f6357c1997e65f1c07c4eb
SSDEEP

98304:u1zMpe1Qf99aDGxOrpj7unH9LBjGRKbLQ1JKAfMgoxmGhB5hb8GsNRJZ:TMqtxO1jinzKRcLcRRWBphAdb

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit upx

Malware Config

Signatures

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

Glupteba payload 18 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4820-134-0x0000000002F30000-0x00000000037A7000-memory.dmp	family_glupteba
behavioral1/memory/4820-136-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4820-137-0x0000000002F30000-0x00000000037A7000-memory.dmp	family_glupteba
behavioral1/memory/1992-138-0x0000000002DF0000-0x0000000003667000-memory.dmp	family_glupteba
behavioral1/memory/1992-144-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-150-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-151-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-152-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-153-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-154-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-155-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-156-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-157-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-158-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-159-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-160-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-161-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/688-168-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

2428 netsh.exe
Executes dropped EXE 3 IoCs

Processes:

csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exe

pid process

688 csrss.exe
1860 injector.exe
4780 f801950a962ddba14caaa44bf084b55c.exe

pid	process
2428	netsh.exe

pid	process
688	csrss.exe
1860	injector.exe
4780	f801950a962ddba14caaa44bf084b55c.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe	upx
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe	upx
behavioral1/memory/4780-167-0x0000000000400000-0x0000000000C25000-memory.dmp	upx
behavioral1/memory/4780-169-0x0000000000400000-0x0000000000C25000-memory.dmp	upx
behavioral1/memory/4780-171-0x0000000000400000-0x0000000000C25000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\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

Processes:

csrss.exe

description ioc process

File opened for modification \??\WinMonFS csrss.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

Processes:

cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe

description	ioc	process
File opened for modification	\??\WinMonFS	csrss.exe

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe

Drops file in Windows directory 2 IoCs

Processes:

cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe

description	ioc	process
File opened for modification	C:\Windows\rss	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
File created	C:\Windows\rss\csrss.exe	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3736 1992 WerFault.exe cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.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
T1053

Processes:

schtasks.exeschtasks.exe

pid process

4512 schtasks.exe
756 schtasks.exe

pid	pid_target	process	target process
3736	1992	WerFault.exe	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe

pid	process
4512	schtasks.exe
756	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-401 = "Arabic Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-461 = "Afghanistan Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1842 = "Russia TZ 4 Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1931 = "Russia TZ 11 Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1042 = "Ulaanbaatar Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1821 = "Russia TZ 1 Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1841 = "Russia TZ 4 Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-122 = "SA Pacific Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2572 = "Turks and Caicos Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-912 = "Mauritius Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-215 = "Pacific Standard Time (Mexico)"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2042 = "Eastern Standard Time (Mexico)"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2322 = "Sakhalin Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2571 = "Turks and Caicos Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-182 = "Mountain Standard Time (Mexico)"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-872 = "Pakistan Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1861 = "Russia TZ 6 Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2841 = "Saratov Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time"	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.execfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exeinjector.execsrss.exe

pid	process
4820	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
4820	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
688	csrss.exe
688	csrss.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
688	csrss.exe
688	csrss.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe
1860	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	4820	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Token: SeImpersonatePrivilege	4820	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
Token: SeSystemEnvironmentPrivilege	688	csrss.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.execmd.execsrss.exe

description	pid	process	target process
PID 1992 wrote to memory of 3300	1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe	cmd.exe
PID 1992 wrote to memory of 3300	1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe	cmd.exe
PID 3300 wrote to memory of 2428	3300	cmd.exe	netsh.exe
PID 3300 wrote to memory of 2428	3300	cmd.exe	netsh.exe
PID 1992 wrote to memory of 688	1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe	csrss.exe
PID 1992 wrote to memory of 688	1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe	csrss.exe
PID 1992 wrote to memory of 688	1992	cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe	csrss.exe
PID 688 wrote to memory of 1860	688	csrss.exe	injector.exe
PID 688 wrote to memory of 1860	688	csrss.exe	injector.exe
PID 688 wrote to memory of 4780	688	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 688 wrote to memory of 4780	688	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 688 wrote to memory of 4780	688	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe

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\cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
"C:\Users\Admin\AppData\Local\Temp\cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4820

C:\Users\Admin\AppData\Local\Temp\cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.exe
"C:\Users\Admin\AppData\Local\Temp\cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371.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:1992

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:3300

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:2428

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:688

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:4512

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:3456

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:1860

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:756

C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
4⤵
- Executes dropped EXE
PID:4780

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn "csrss" /f
5⤵
PID:452

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn "ScheduledUpdate" /f
5⤵
PID:2724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1992 -s 608
3⤵
- Program crash
PID:3736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1992 -ip 1992
1⤵
PID:4052

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
Filesize
3.2MB

MD5
f801950a962ddba14caaa44bf084b55c

SHA1
7cadc9076121297428442785536ba0df2d4ae996

SHA256
c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f

SHA512
4183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
Filesize
3.2MB

MD5
f801950a962ddba14caaa44bf084b55c

SHA1
7cadc9076121297428442785536ba0df2d4ae996

SHA256
c3946ec89e15b24b743c46f9acacb58cff47da63f3ce2799d71ed90496b8891f

SHA512
4183bc76bdc84fb779e2e573d9a63d7de47096b63b945f9e335bee95ae28eb208f5ee15f6501ac59623b97c5b77f3455ca313512e7d9803e1704ae22a52459c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
Filesize
99KB

MD5
09031a062610d77d685c9934318b4170

SHA1
880f744184e7774f3d14c1bb857e21cc7fe89a6d

SHA256
778bd69af403df3c4e074c31b3850d71bf0e64524bea4272a802ca9520b379dd

SHA512
9a276e1f0f55d35f2bf38eb093464f7065bdd30a660e6d1c62eed5e76d1fb2201567b89d9ae65d2d89dc99b142159e36fb73be8d5e08252a975d50544a7cda27

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.1MB

MD5
22292eb2b0096ec984867034eed55e8a

SHA1
4408e912caa55816ae033cd9ffab3d6e6eb1d817

SHA256
cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371

SHA512
c50fddadc7690d4d657aac0c3a3a3ae25f84dbca30f1be13144455265cabc932524263f6f5f80d5d8d2f4bcb9bb4157989cbc7c906f6357c1997e65f1c07c4eb

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.1MB

MD5
22292eb2b0096ec984867034eed55e8a

SHA1
4408e912caa55816ae033cd9ffab3d6e6eb1d817

SHA256
cfc0842867be1cc65326e2d4949bd92e6bd903e85cc228f7bd913f4b634a7371

SHA512
c50fddadc7690d4d657aac0c3a3a3ae25f84dbca30f1be13144455265cabc932524263f6f5f80d5d8d2f4bcb9bb4157989cbc7c906f6357c1997e65f1c07c4eb

Download Submit
memory/688-157-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-159-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-150-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-151-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-152-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-153-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-154-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-155-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-156-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-168-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-158-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-161-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/688-160-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1992-138-0x0000000002DF0000-0x0000000003667000-memory.dmp

Filesize
8.5MB

Download
memory/1992-144-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4780-167-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/4780-169-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/4780-171-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/4820-134-0x0000000002F30000-0x00000000037A7000-memory.dmp

Filesize
8.5MB

Download
memory/4820-137-0x0000000002F30000-0x00000000037A7000-memory.dmp

Filesize
8.5MB

Download
memory/4820-136-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads