glupteba | fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f

General

Target

fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Size

4.1MB
MD5

e7494820b6188a50cbd343e428139500
SHA1

8ab2a453956c4cd5e1f0529c20891be609d8958e
SHA256

fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f
SHA512

3deda711a90b79849076e1e15da695f1efd2584ed8e85ad525faad9bdaf596130ef9813499084de1adcb079c475b681d64c68bf2b34ad4741c3ecc0d75139b30
SSDEEP

98304:yLqWm8EUt/RsxsyuOliVwdHZMwkg3X+WAEpeoGZdJ:jynt/Sxsyu+yc2wkUX+GURv

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/428-134-0x0000000002F10000-0x0000000003787000-memory.dmp	family_glupteba
behavioral1/memory/428-135-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2244-142-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-148-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-149-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-150-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-151-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-152-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-153-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-154-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-155-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-156-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-157-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-158-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-159-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-160-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/4384-167-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3164 netsh.exe
Executes dropped EXE 3 IoCs

Processes:

csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exe

pid process

4384 csrss.exe
3640 injector.exe
4972 f801950a962ddba14caaa44bf084b55c.exe

pid	process
3164	netsh.exe

pid	process
4384	csrss.exe
3640	injector.exe
4972	f801950a962ddba14caaa44bf084b55c.exe

UPX packed file 3 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/4972-166-0x0000000000400000-0x0000000000C25000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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\""	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
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:

fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe

Drops file in Windows directory 2 IoCs

Processes:

fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe

description	ioc	process
File opened for modification	C:\Windows\rss	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
File created	C:\Windows\rss\csrss.exe	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2252 2244 WerFault.exe fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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

4052 schtasks.exe
4612 schtasks.exe

pid	pid_target	process	target process
2252	2244	WerFault.exe	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe

pid	process
4052	schtasks.exe
4612	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-911 = "Mauritius Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2941 = "Sao Tome Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2842 = "Saratov Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2612 = "Bougainville Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-871 = "Pakistan Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2611 = "Bougainville Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	csrss.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"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-772 = "Montevideo Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-281 = "Central Europe Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3142 = "South Sudan Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-531 = "Sri Lanka Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3051 = "Qyzylorda Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-201 = "US Mountain Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1502 = "Turkey Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-672 = "AUS Eastern Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-364 = "Middle East Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2631 = "Norfolk Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exefb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exeinjector.execsrss.exe

pid	process
428	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
428	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
4384	csrss.exe
4384	csrss.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
4384	csrss.exe
4384	csrss.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe
3640	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	428	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Token: SeImpersonatePrivilege	428	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
Token: SeSystemEnvironmentPrivilege	4384	csrss.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.execmd.execsrss.exe

description	pid	process	target process
PID 2244 wrote to memory of 4592	2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe	cmd.exe
PID 2244 wrote to memory of 4592	2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe	cmd.exe
PID 4592 wrote to memory of 3164	4592	cmd.exe	netsh.exe
PID 4592 wrote to memory of 3164	4592	cmd.exe	netsh.exe
PID 2244 wrote to memory of 4384	2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe	csrss.exe
PID 2244 wrote to memory of 4384	2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe	csrss.exe
PID 2244 wrote to memory of 4384	2244	fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe	csrss.exe
PID 4384 wrote to memory of 3640	4384	csrss.exe	injector.exe
PID 4384 wrote to memory of 3640	4384	csrss.exe	injector.exe
PID 4384 wrote to memory of 4972	4384	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 4384 wrote to memory of 4972	4384	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 4384 wrote to memory of 4972	4384	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\fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
"C:\Users\Admin\AppData\Local\Temp\fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:428

C:\Users\Admin\AppData\Local\Temp\fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.exe
"C:\Users\Admin\AppData\Local\Temp\fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f.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:2244

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:4592

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:3164

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4384

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:4052

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:1444

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:3640

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:4612

C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
4⤵
- Executes dropped EXE
PID:4972

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn "csrss" /f
5⤵
PID:1836

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn "ScheduledUpdate" /f
5⤵
PID:1264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2244 -s 744
3⤵
- Program crash
PID:2252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2244 -ip 2244
1⤵
PID:1672

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

Web Service

1

T1102

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\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
e7494820b6188a50cbd343e428139500

SHA1
8ab2a453956c4cd5e1f0529c20891be609d8958e

SHA256
fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f

SHA512
3deda711a90b79849076e1e15da695f1efd2584ed8e85ad525faad9bdaf596130ef9813499084de1adcb079c475b681d64c68bf2b34ad4741c3ecc0d75139b30

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

MD5
e7494820b6188a50cbd343e428139500

SHA1
8ab2a453956c4cd5e1f0529c20891be609d8958e

SHA256
fb5801749d5404ae4b95846fd45527a3268aae3fa8bbf292f5155830bc25150f

SHA512
3deda711a90b79849076e1e15da695f1efd2584ed8e85ad525faad9bdaf596130ef9813499084de1adcb079c475b681d64c68bf2b34ad4741c3ecc0d75139b30

Download Submit
memory/428-134-0x0000000002F10000-0x0000000003787000-memory.dmp

Filesize
8.5MB

Download
memory/428-135-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2244-142-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-153-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-157-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-152-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-150-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-154-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-155-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-156-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-151-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-158-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-159-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-160-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-149-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-148-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4384-167-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4972-166-0x0000000000400000-0x0000000000C25000-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