glupteba | 53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520

General

Target

53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Size

5.6MB
MD5

3e775c532ca83c1da3b32c45bed7ffc9
SHA1

0d84d2a84aa388ef2bd4e9f10af917d18577156e
SHA256

53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520
SHA512

93bcd2eb28ea5675d2cc9f80c2c4dbdff012f2e52b842f6c64ac0fc5c8635d6e78c08217a4d896dcc939325b66f345c4ffa88354b198805e8788a0e2ed0af1ef

Score

10^/10

glupteba dropper evasion loader persistence suricata trojan

Malware Config

Signatures

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

Glupteba Payload 3 IoCs

Processes:

resource	yara_rule
\Windows\rss\csrss.exe	family_glupteba
C:\Windows\rss\csrss.exe	family_glupteba
\Windows\rss\csrss.exe	family_glupteba

Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
suricata: ET MALWARE Glupteba CnC Domain in DNS Lookup
suricata: ET MALWARE Glupteba CnC Domain in DNS Lookup
suricata
suricata: ET MALWARE Glupteba CnC Observed in DNS Query
suricata: ET MALWARE Glupteba CnC Observed in DNS Query
suricata
Executes dropped EXE 1 IoCs

Processes:

csrss.exe

pid process

1980 csrss.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
1980	csrss.exe

Loads dropped DLL 2 IoCs

Processes:

53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

pid	process
1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

Windows security modification 2 TTPs 12 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\cloudnet.exe = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\EpicNet Inc\CloudNet = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\wup = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\SnowyWildflower = "0"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\SnowyWildflower = "\"C:\\Windows\\rss\\csrss.exe\""	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

Drops file in System32 directory 6 IoCs

Processes:

csrss.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E0F5C59F9FA661F6F4C50B87FEF3A15A	csrss.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015	csrss.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015	csrss.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357	csrss.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357	csrss.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E0F5C59F9FA661F6F4C50B87FEF3A15A	csrss.exe

Drops file in Windows directory 3 IoCs

Processes:

53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exemakecab.exe

description	ioc	process
File opened for modification	C:\Windows\rss	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
File created	C:\Windows\rss\csrss.exe	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
File created	C:\Windows\Logs\CBS\CbsPersist_20220524043235.cab	makecab.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

netsh.execsrss.exe53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\@%SystemRoot%\system32\eapqec.dll,-100 = "EAP Quarantine Enforcement Client"	netsh.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-132 = "US Eastern Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-51 = "Greenland Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-365 = "Middle East Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Control\NetTrace	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-1471 = "Magadan Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-72 = "Newfoundland Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-21 = "Cape Verde Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-492 = "India Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-202 = "US Mountain Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-385 = "Namibia Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-152 = "Central America Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-522 = "N. Central Asia Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-261 = "GMT Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-1472 = "Magadan Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-581 = "North Asia East Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-471 = "Ekaterinburg Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-212 = "Pacific Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-342 = "Egypt Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-334 = "Jordan Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-442 = "Arabian Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-71 = "Newfoundland Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\@%SystemRoot%\system32\napipsec.dll,-4 = "1.0"	netsh.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-502 = "Nepal Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	csrss.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

Modifies system certificate store 2 TTPs 6 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

csrss.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	csrss.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 0f00000001000000140000005bcaa1c2780f0bcb5a90770451d96f38963f012d0b000000010000001e000000440053005400200052006f006f0074002000430041002000580033000000090000000100000016000000301406082b0601050507030406082b06010505070301140000000100000014000000c4a7b1a47b2c71fadbe14b9075ffc415608589101d00000001000000100000004558d512eecb27464920897de7b66053030000000100000014000000dac9024f54d8f6df94935fb1732638ca6ad77c1320000000010000004e0300003082034a30820232a003020102021044afb080d6a327ba893039862ef8406b300d06092a864886f70d0101050500303f31243022060355040a131b4469676974616c205369676e617475726520547275737420436f2e311730150603550403130e44535420526f6f74204341205833301e170d3030303933303231313231395a170d3231303933303134303131355a303f31243022060355040a131b4469676974616c205369676e617475726520547275737420436f2e311730150603550403130e44535420526f6f7420434120583330820122300d06092a864886f70d01010105000382010f003082010a0282010100dfafe99750088357b4cc6265f69082ecc7d32c6b30ca5becd9c37dc740c118148be0e83376492ae33f214993ac4e0eaf3e48cb65eefcd3210f65d22ad9328f8ce5f777b0127bb595c089a3a9baed732e7a0c063283a27e8a1430cd11a0e12a38b9790a31fd50bd8065dfb7516383c8e28861ea4b6181ec526bb9a2e24b1a289f48a39e0cda098e3e172e1edd20df5bc62a8aab2ebd70adc50b1a25907472c57b6aab34d63089ffe568137b540bc8d6aeec5a9c921e3d64b38cc6dfbfc94170ec1672d526ec38553943d0fcfd185c40f197ebd59a9b8d1dbada25b9c6d8dfc115023aabda6ef13e2ef55c089c3cd68369e4109b192ab62957e3e53d9b9ff0025d0203010001a3423040300f0603551d130101ff040530030101ff300e0603551d0f0101ff040403020106301d0603551d0e04160414c4a7b1a47b2c71fadbe14b9075ffc41560858910300d06092a864886f70d01010505000382010100a31a2c9b17005ca91eee2866373abf83c73f4bc309a095205de3d95944d23e0d3ebd8a4ba0741fce10829c741a1d7e981addcb134bb32044e491e9ccfc7da5db6ae5fee6fde04eddb7003ab57049aff2e5eb02f1d1028b19cb943a5e48c4181e58195f1e025af00cf1b1ada9dc59868b6ee991f586cafab96633aa595bcee2a7167347cb2bcc99b03748cfe3564bf5cf0f0c723287c6f044bb53726d43f526489a5267b758abfe67767178db0da256141339243185a2a8025a3047e1dd5007bc02099000eb6463609b16bc88c912e6d27d918bf93d328d65b4e97cb15776eac5b62839bf15651cc8f677966a0a8d770bd8910b048e07db29b60aee9d82353510	csrss.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	csrss.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	csrss.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	csrss.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 0400000001000000100000000cd2f9e0da1773e9ed864da5e370e74e14000000010000001400000079b459e67bb6e5e40173800888c81a58f6e99b6e030000000100000014000000cabd2a79a1076a31f21d253635cb039d4329a5e80f00000001000000200000003f0411ede9c4477057d57e57883b1f205b20cdc0f3263129b1ee0269a2678f631900000001000000100000002fe1f70bb05d7c92335bc5e05b984da620000000010000006f0500003082056b30820353a0030201020211008210cfb0d240e3594463e0bb63828b00300d06092a864886f70d01010b0500304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f74205831301e170d3135303630343131303433385a170d3335303630343131303433385a304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f7420583130820222300d06092a864886f70d01010105000382020f003082020a0282020100ade82473f41437f39b9e2b57281c87bedcb7df38908c6e3ce657a078f775c2a2fef56a6ef6004f28dbde68866c4493b6b163fd14126bbf1fd2ea319b217ed1333cba48f5dd79dfb3b8ff12f1219a4bc18a8671694a66666c8f7e3c70bfad292206f3e4c0e680aee24b8fb7997e94039fd347977c99482353e838ae4f0a6f832ed149578c8074b6da2fd0388d7b0370211b75f2303cfa8faeddda63abeb164fc28e114b7ecf0be8ffb5772ef4b27b4ae04c12250c708d0329a0e15324ec13d9ee19bf10b34a8c3f89a36151deac870794f46371ec2ee26f5b9881e1895c34796c76ef3b906279e6dba49a2f26c5d010e10eded9108e16fbb7f7a8f7c7e50207988f360895e7e237960d36759efb0e72b11d9bbc03f94905d881dd05b42ad641e9ac0176950a0fd8dfd5bd121f352f28176cd298c1a80964776e4737baceac595e689d7f72d689c50641293e593edd26f524c911a75aa34c401f46a199b5a73a516e863b9e7d72a712057859ed3e5178150b038f8dd02f05b23e7b4a1c4b730512fcc6eae050137c439374b3ca74e78e1f0108d030d45b7136b407bac130305c48b7823b98a67d608aa2a32982ccbabd83041ba2830341a1d605f11bc2b6f0a87c863b46a8482a88dc769a76bf1f6aa53d198feb38f364dec82b0d0a28fff7dbe21542d422d0275de179fe18e77088ad4ee6d98b3ac6dd27516effbc64f533434f0203010001a3423040300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff301d0603551d0e0416041479b459e67bb6e5e40173800888c81a58f6e99b6e300d06092a864886f70d01010b05000382020100551f58a9bcb2a850d00cb1d81a6920272908ac61755c8a6ef882e5692fd5f6564bb9b8731059d321977ee74c71fbb2d260ad39a80bea17215685f1500e59ebcee059e9bac915ef869d8f8480f6e4e99190dc179b621b45f06695d27c6fc2ea3bef1fcfcbd6ae27f1a9b0c8aefd7d7e9afa2204ebffd97fea912b22b1170e8ff28a345b58d8fc01c954b9b826cc8a8833894c2d843c82dfee965705ba2cbbf7c4b7c74e3b82be31c822737392d1c280a43939103323824c3c9f86b255981dbe29868c229b9ee26b3b573a82704ddc09c789cb0a074d6ce85d8ec9efceabc7bbb52b4e45d64ad026cce572ca086aa595e315a1f7a4edc92c5fa5fbffac28022ebed77bbbe3717b9016d3075e46537c3707428cd3c4969cd599b52ae0951a8048ae4c3907cecc47a452952bbab8fbadd233537de51d4d6dd5a1b1c7426fe64027355ca328b7078de78d3390e7239ffb509c796c46d5b415b3966e7e9b0c963ab8522d3fd65be1fb08c284fe24a8a389daac6ae1182ab1a843615bd31fdc3b8d76f22de88d75df17336c3d53fb7bcb415fffdca2d06138e196b8ac5d8b37d775d533c09911ae9d41c1727584be0241425f67244894d19b27be073fb9b84f817451e17ab7ed9d23e2bee0d52804133c31039edd7a6c8fc60718c67fde478e3f289e0406cfa5543477bdec899be91743df5bdb5ffe8e1e57a2cd409d7e6222dade1827	csrss.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

pid	process
1580	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

description	pid	process
Token: SeDebugPrivilege	1580	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
Token: SeImpersonatePrivilege	1580	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.execmd.exe

description	pid	process	target process
PID 1384 wrote to memory of 1560	1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe	cmd.exe
PID 1384 wrote to memory of 1560	1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe	cmd.exe
PID 1384 wrote to memory of 1560	1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe	cmd.exe
PID 1384 wrote to memory of 1560	1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe	cmd.exe
PID 1560 wrote to memory of 956	1560	cmd.exe	netsh.exe
PID 1560 wrote to memory of 956	1560	cmd.exe	netsh.exe
PID 1560 wrote to memory of 956	1560	cmd.exe	netsh.exe
PID 1384 wrote to memory of 1980	1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe	csrss.exe
PID 1384 wrote to memory of 1980	1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe	csrss.exe
PID 1384 wrote to memory of 1980	1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe	csrss.exe
PID 1384 wrote to memory of 1980	1384	53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe	csrss.exe

C:\Users\Admin\AppData\Local\Temp\53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
"C:\Users\Admin\AppData\Local\Temp\53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1580

C:\Users\Admin\AppData\Local\Temp\53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe
"C:\Users\Admin\AppData\Local\Temp\53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520.exe"
2⤵
- Loads dropped DLL
- Windows security modification
- Adds Run key to start application
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1384

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:1560

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 data under HKEY_USERS
PID:956

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe ""
3⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Modifies system certificate store
PID:1980

C:\Windows\system32\makecab.exe
"C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20220524043235.log C:\Windows\Logs\CBS\CbsPersist_20220524043235.cab
1⤵
- Drops file in Windows directory
PID:2008

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Disabling Security Tools

2

T1089

Modify Registry

4

T1112

Install Root Certificate

1

T1130

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\rss\csrss.exe
Filesize
5.6MB

MD5
3e775c532ca83c1da3b32c45bed7ffc9

SHA1
0d84d2a84aa388ef2bd4e9f10af917d18577156e

SHA256
53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520

SHA512
93bcd2eb28ea5675d2cc9f80c2c4dbdff012f2e52b842f6c64ac0fc5c8635d6e78c08217a4d896dcc939325b66f345c4ffa88354b198805e8788a0e2ed0af1ef

Download Submit
\Windows\rss\csrss.exe
Filesize
5.6MB

MD5
3e775c532ca83c1da3b32c45bed7ffc9

SHA1
0d84d2a84aa388ef2bd4e9f10af917d18577156e

SHA256
53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520

SHA512
93bcd2eb28ea5675d2cc9f80c2c4dbdff012f2e52b842f6c64ac0fc5c8635d6e78c08217a4d896dcc939325b66f345c4ffa88354b198805e8788a0e2ed0af1ef

Download Submit
\Windows\rss\csrss.exe
Filesize
5.6MB

MD5
3e775c532ca83c1da3b32c45bed7ffc9

SHA1
0d84d2a84aa388ef2bd4e9f10af917d18577156e

SHA256
53fa72b47e4f28e3fd9440d8bd3f2dbfddbaf2e2e8c605354663c98b73313520

SHA512
93bcd2eb28ea5675d2cc9f80c2c4dbdff012f2e52b842f6c64ac0fc5c8635d6e78c08217a4d896dcc939325b66f345c4ffa88354b198805e8788a0e2ed0af1ef

Download Submit
memory/956-55-0x0000000000000000-mapping.dmp

Download
memory/956-56-0x000007FEFBF01000-0x000007FEFBF03000-memory.dmp

Filesize
8KB

Download
memory/1560-54-0x0000000000000000-mapping.dmp

Download
memory/1980-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads