glupteba | f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e

General

Target

f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Size

4.1MB
MD5

dfb9964823bdae17d0b1ae5d880b47a2
SHA1

399fdde3015966f789eba553197ba71950993f02
SHA256

f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e
SHA512

46a760e8f500996f3e321d547fee42b159a8e647a77b37aa03dfab306624f3a165fbfbdfce0e7b424dc82bba8ea95f072f99ee2a2ead098758980907e13dfb73
SSDEEP

98304:rvpOWouYO4mCfghlxU0b33zKayfkyhq08WG:rvAzuYO4JyHaFq+G

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 17 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3404-134-0x00000000031D0000-0x0000000003A47000-memory.dmp	family_glupteba
behavioral1/memory/3404-135-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/2736-140-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-148-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-149-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-150-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-151-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-152-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-153-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-154-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-155-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-156-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-157-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-158-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-159-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-160-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/1528-167-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4280 netsh.exe
Executes dropped EXE 3 IoCs

Processes:

csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exe

pid process

1528 csrss.exe
748 injector.exe
5084 f801950a962ddba14caaa44bf084b55c.exe

pid	process
4280	netsh.exe

pid	process
1528	csrss.exe
748	injector.exe
5084	f801950a962ddba14caaa44bf084b55c.exe

UPX packed file 4 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/5084-166-0x0000000000400000-0x0000000000C25000-memory.dmp	upx
behavioral1/memory/5084-168-0x0000000000400000-0x0000000000C25000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\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:

f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe

Drops file in Windows directory 2 IoCs

Processes:

f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe

description	ioc	process
File created	C:\Windows\rss\csrss.exe	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
File opened for modification	C:\Windows\rss	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.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

8 schtasks.exe
2112 schtasks.exe

pid	process
8	schtasks.exe
2112	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2791 = "Novosibirsk Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-121 = "SA Pacific Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-335 = "Jordan Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.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"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-251 = "Dateline Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1822 = "Russia TZ 1 Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-832 = "SA Eastern Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2432 = "Cuba Standard Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time"	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exef67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exeinjector.execsrss.exe

pid	process
3404	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
3404	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
1528	csrss.exe
1528	csrss.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
1528	csrss.exe
1528	csrss.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe
748	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	3404	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Token: SeImpersonatePrivilege	3404	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
Token: SeSystemEnvironmentPrivilege	1528	csrss.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.execmd.execsrss.exe

description	pid	process	target process
PID 2736 wrote to memory of 3020	2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe	cmd.exe
PID 2736 wrote to memory of 3020	2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe	cmd.exe
PID 3020 wrote to memory of 4280	3020	cmd.exe	netsh.exe
PID 3020 wrote to memory of 4280	3020	cmd.exe	netsh.exe
PID 2736 wrote to memory of 1528	2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe	csrss.exe
PID 2736 wrote to memory of 1528	2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe	csrss.exe
PID 2736 wrote to memory of 1528	2736	f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe	csrss.exe
PID 1528 wrote to memory of 748	1528	csrss.exe	injector.exe
PID 1528 wrote to memory of 748	1528	csrss.exe	injector.exe
PID 1528 wrote to memory of 5084	1528	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 1528 wrote to memory of 5084	1528	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 1528 wrote to memory of 5084	1528	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\f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
"C:\Users\Admin\AppData\Local\Temp\f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3404

C:\Users\Admin\AppData\Local\Temp\f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.exe
"C:\Users\Admin\AppData\Local\Temp\f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e.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:2736

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:3020

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:4280

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:1528

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:8

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:4584

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:748

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:2112

C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
4⤵
- Executes dropped EXE
PID:5084

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn "csrss" /f
5⤵
PID:4280

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn "ScheduledUpdate" /f
5⤵
PID:752

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

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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\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
dfb9964823bdae17d0b1ae5d880b47a2

SHA1
399fdde3015966f789eba553197ba71950993f02

SHA256
f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e

SHA512
46a760e8f500996f3e321d547fee42b159a8e647a77b37aa03dfab306624f3a165fbfbdfce0e7b424dc82bba8ea95f072f99ee2a2ead098758980907e13dfb73

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

MD5
dfb9964823bdae17d0b1ae5d880b47a2

SHA1
399fdde3015966f789eba553197ba71950993f02

SHA256
f67dc6b44e11240cda86d02ff214499e1696f6a5612b5dca0aa5dff85c4a458e

SHA512
46a760e8f500996f3e321d547fee42b159a8e647a77b37aa03dfab306624f3a165fbfbdfce0e7b424dc82bba8ea95f072f99ee2a2ead098758980907e13dfb73

Download Submit
memory/1528-153-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-156-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-149-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-150-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-151-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-152-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-167-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-154-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-155-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-148-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-157-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-158-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-159-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/1528-160-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/2736-140-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/3404-135-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/3404-134-0x00000000031D0000-0x0000000003A47000-memory.dmp

Filesize
8.5MB

Download
memory/5084-166-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/5084-168-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads