glupteba | 6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb

General

Target

6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Size

4.1MB
MD5

4cb984343c50aefb5b841ae4cef74781
SHA1

d5237867341d8154c363da2287197b8d37c23245
SHA256

6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb
SHA512

64ee8cbbf50c24d958768b1414da7057fe872bb47a1f917dcffd4cddb5dcd59197f94d7ea29649eafed0b4ca68a3624c4484454d5bf0271b7faf6f81c0a94932
SSDEEP

98304:RBxzdpH15bUFqXTsM1L0NlUAzzctxmpG5AzXLUQW/d3UXoBfYPDTK/0l/rY:5V5b3Qe0MAzzqmpGU7UQMd3UX6YPDq0i

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 14 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4416-134-0x0000000002F00000-0x0000000003777000-memory.dmp	family_glupteba
behavioral1/memory/4416-135-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/1264-140-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-148-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-149-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-150-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-151-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-152-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-153-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-154-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-155-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-156-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-157-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2968-163-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

2856 netsh.exe
Executes dropped EXE 3 IoCs

Processes:

csrss.exeinjector.exef801950a962ddba14caaa44bf084b55c.exe

pid process

2968 csrss.exe
2904 injector.exe
1160 f801950a962ddba14caaa44bf084b55c.exe

pid	process
2856	netsh.exe

pid	process
2968	csrss.exe
2904	injector.exe
1160	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/1160-164-0x0000000000400000-0x0000000000C25000-memory.dmp	upx
behavioral1/memory/1160-165-0x0000000000400000-0x0000000000C25000-memory.dmp	upx
behavioral1/memory/1160-167-0x0000000000400000-0x0000000000C25000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\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:

6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN 6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe

Drops file in Windows directory 2 IoCs

Processes:

6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe

description	ioc	process
File opened for modification	C:\Windows\rss	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
File created	C:\Windows\rss\csrss.exe	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1472 4416 WerFault.exe 6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.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

3432 schtasks.exe
3640 schtasks.exe

pid	pid_target	process	target process
1472	4416	WerFault.exe	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe

pid	process
3432	schtasks.exe
3640	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-341 = "Egypt Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-562 = "SE Asia Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2792 = "Novosibirsk Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1891 = "Russia TZ 3 Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-41 = "E. South America Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2371 = "Easter Island Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2772 = "Omsk Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	csrss.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"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-214 = "Pacific Daylight Time (Mexico)"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2491 = "Aus Central W. Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-431 = "Iran Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-752 = "Tonga Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1721 = "Libya Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-542 = "Myanmar Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2841 = "Saratov Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2632 = "Norfolk Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2771 = "Omsk Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-332 = "E. Europe Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-31 = "Mid-Atlantic Daylight Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time"	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exeinjector.execsrss.exe

pid	process
4416	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
4416	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2968	csrss.exe
2968	csrss.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2968	csrss.exe
2968	csrss.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe
2904	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	4416	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Token: SeImpersonatePrivilege	4416	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
Token: SeSystemEnvironmentPrivilege	2968	csrss.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.execmd.execsrss.exe

description	pid	process	target process
PID 1264 wrote to memory of 4092	1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe	cmd.exe
PID 1264 wrote to memory of 4092	1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe	cmd.exe
PID 4092 wrote to memory of 2856	4092	cmd.exe	netsh.exe
PID 4092 wrote to memory of 2856	4092	cmd.exe	netsh.exe
PID 1264 wrote to memory of 2968	1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe	csrss.exe
PID 1264 wrote to memory of 2968	1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe	csrss.exe
PID 1264 wrote to memory of 2968	1264	6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe	csrss.exe
PID 2968 wrote to memory of 2904	2968	csrss.exe	injector.exe
PID 2968 wrote to memory of 2904	2968	csrss.exe	injector.exe
PID 2968 wrote to memory of 1160	2968	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 2968 wrote to memory of 1160	2968	csrss.exe	f801950a962ddba14caaa44bf084b55c.exe
PID 2968 wrote to memory of 1160	2968	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\6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
"C:\Users\Admin\AppData\Local\Temp\6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4416
- C:\Users\Admin\AppData\Local\Temp\6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.exe
  "C:\Users\Admin\AppData\Local\Temp\6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb.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:1264
- - 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:4092
  - - 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:2856
- - 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: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:3432
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:100
  - - 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:2904
  - - 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:3640
  - - C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
      C:\Users\Admin\AppData\Local\Temp\csrss\f801950a962ddba14caaa44bf084b55c.exe
      4⤵
      Executes dropped EXE
      PID:1160
    - - C:\Windows\SYSTEM32\schtasks.exe
        
        schtasks /delete /tn "csrss" /f
        5⤵
        
        PID:380
    - - C:\Windows\SYSTEM32\schtasks.exe
        
        schtasks /delete /tn "ScheduledUpdate" /f
        5⤵
        
        PID:3456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4416 -s 904
  2⤵
  - Program crash
  PID:1472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4416 -ip 4416
1⤵
PID:3088

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

Web Service

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

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
4cb984343c50aefb5b841ae4cef74781

SHA1
d5237867341d8154c363da2287197b8d37c23245

SHA256
6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb

SHA512
64ee8cbbf50c24d958768b1414da7057fe872bb47a1f917dcffd4cddb5dcd59197f94d7ea29649eafed0b4ca68a3624c4484454d5bf0271b7faf6f81c0a94932

Download Submit
C:\Windows\rss\csrss.exe

Filesize
4.1MB

MD5
4cb984343c50aefb5b841ae4cef74781

SHA1
d5237867341d8154c363da2287197b8d37c23245

SHA256
6631c363a923af5945dc551512b7e4a2f7d8b9223cb485a66a1cc6d3fa753cbb

SHA512
64ee8cbbf50c24d958768b1414da7057fe872bb47a1f917dcffd4cddb5dcd59197f94d7ea29649eafed0b4ca68a3624c4484454d5bf0271b7faf6f81c0a94932

Download Submit
memory/1160-167-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/1160-165-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/1160-164-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/1264-140-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-150-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-153-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-154-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-155-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-156-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-157-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-152-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-151-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-163-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-149-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2968-148-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4416-135-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/4416-134-0x0000000002F00000-0x0000000003777000-memory.dmp

Filesize
8.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads