glupteba | e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df

General

Target

e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Size

4.1MB
MD5

a7ec7cd185ceb330ffd94409a6265f1e
SHA1

ee9d5b1d72236e1b5a838b36dec04d355f67eb82
SHA256

e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df
SHA512

d8a25e8699d26d4bac2535296aa6d9dfc03db43a2c37a991225b8edf922fe019412ca156452fb1bd6e865f198adc27fedcfd1fd32f21cb61655138dc3cc9f531
SSDEEP

98304:aUwzay3/eNse6eXt0f8PeFsnpObm1b2OjOkqWQTMeoC8X2wWLO3gZWLQr1jY7:arey3/rCMGeMIyN2ObnbXIS3LQe7

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/2848-134-0x0000000002FD0000-0x0000000003847000-memory.dmp	family_glupteba
behavioral1/memory/2848-135-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/2356-137-0x0000000002FC0000-0x0000000003837000-memory.dmp	family_glupteba
behavioral1/memory/2356-143-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-149-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-150-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-151-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-152-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-153-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-154-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-155-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-156-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-157-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-158-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-159-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-160-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba
behavioral1/memory/4436-167-0x0000000000400000-0x0000000000EA6000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3488 netsh.exe
Executes dropped EXE 3 IoCs

Processes:

csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exe

pid process

4436 csrss.exe
2968 injector.exe
444 f801950a962ddba14caaa44bf084b55c.exe

pid	process
3488	netsh.exe

pid	process
4436	csrss.exe
2968	injector.exe
444	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/444-166-0x0000000000400000-0x0000000000C25000-memory.dmp	upx
behavioral1/memory/444-168-0x0000000000400000-0x0000000000C25000-memory.dmp	upx
behavioral1/memory/444-170-0x0000000000400000-0x0000000000C25000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\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:

e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe

Drops file in Windows directory 2 IoCs

Processes:

e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe

description	ioc	process
File opened for modification	C:\Windows\rss	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
File created	C:\Windows\rss\csrss.exe	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.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

1972 schtasks.exe
408 schtasks.exe

pid	process
1972	schtasks.exe
408	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-671 = "AUS Eastern Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-441 = "Arabian Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-751 = "Tonga Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-352 = "FLE Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.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"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-842 = "Argentina Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2182 = "Astrakhan Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2492 = "Aus Central W. Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2532 = "Chatham Islands Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-871 = "Pakistan Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2752 = "Tomsk Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.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"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1872 = "Russia TZ 7 Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.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"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-392 = "Arab Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.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"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-532 = "Sri Lanka Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-111 = "Eastern Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-12 = "Azores Standard Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2531 = "Chatham Islands Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exee3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exeinjector.execsrss.exe

pid	process
2848	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2848	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
4436	csrss.exe
4436	csrss.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
4436	csrss.exe
4436	csrss.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe
2968	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	2848	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Token: SeImpersonatePrivilege	2848	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
Token: SeSystemEnvironmentPrivilege	4436	csrss.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.execmd.execsrss.exe

description	pid	process	target process
PID 2356 wrote to memory of 3536	2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe	cmd.exe
PID 2356 wrote to memory of 3536	2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe	cmd.exe
PID 3536 wrote to memory of 3488	3536	cmd.exe	netsh.exe
PID 3536 wrote to memory of 3488	3536	cmd.exe	netsh.exe
PID 2356 wrote to memory of 4436	2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe	csrss.exe
PID 2356 wrote to memory of 4436	2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe	csrss.exe
PID 2356 wrote to memory of 4436	2356	e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe	csrss.exe
PID 4436 wrote to memory of 2968	4436	csrss.exe	injector.exe
PID 4436 wrote to memory of 2968	4436	csrss.exe	injector.exe
PID 4436 wrote to memory of 444	4436	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 4436 wrote to memory of 444	4436	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 4436 wrote to memory of 444	4436	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\e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
"C:\Users\Admin\AppData\Local\Temp\e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2848

C:\Users\Admin\AppData\Local\Temp\e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.exe
"C:\Users\Admin\AppData\Local\Temp\e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df.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:2356

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:3536

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:3488

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:4436

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:1972

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:2132

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:2968

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:408

C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
4⤵
- Executes dropped EXE
PID:444

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn "csrss" /f
5⤵
PID:388

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn "ScheduledUpdate" /f
5⤵
PID:4948

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
a7ec7cd185ceb330ffd94409a6265f1e

SHA1
ee9d5b1d72236e1b5a838b36dec04d355f67eb82

SHA256
e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df

SHA512
d8a25e8699d26d4bac2535296aa6d9dfc03db43a2c37a991225b8edf922fe019412ca156452fb1bd6e865f198adc27fedcfd1fd32f21cb61655138dc3cc9f531

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

MD5
a7ec7cd185ceb330ffd94409a6265f1e

SHA1
ee9d5b1d72236e1b5a838b36dec04d355f67eb82

SHA256
e3e2873c78945587b024f00ff311a89f6a93f5734851ca449c9fbc859c3391df

SHA512
d8a25e8699d26d4bac2535296aa6d9dfc03db43a2c37a991225b8edf922fe019412ca156452fb1bd6e865f198adc27fedcfd1fd32f21cb61655138dc3cc9f531

Download Submit
memory/444-170-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/444-168-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/444-166-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/2356-143-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/2356-137-0x0000000002FC0000-0x0000000003837000-memory.dmp

Filesize
8.5MB

Download
memory/2848-134-0x0000000002FD0000-0x0000000003847000-memory.dmp

Filesize
8.5MB

Download
memory/2848-135-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-153-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-156-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-157-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-158-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-159-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-160-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-155-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-154-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-152-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-167-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-151-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-150-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download
memory/4436-149-0x0000000000400000-0x0000000000EA6000-memory.dmp

Filesize
10.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads