glupteba | e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0

General

Target

e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Size

4.1MB
MD5

4f61b0db0fbd7b7c524624af58030785
SHA1

a1febb88a29edbe10d427c4549833b6ab5befcea
SHA256

e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0
SHA512

fe82d2e20c1583ee219a0dbec864951bcf6c183a8cb12e07564c244710d3f10164146554bc8a3211f59406387e3ca806e1914ad47b49d45272f94f479efbcfce
SSDEEP

98304:CR4aIsqGXrMM5+XC79bek6AV6rp64timIOdgjmBZlYVyYAb:42RGgM5+y7kk6AV6/LIygjgZ2VI

Score

10^/10

glupteba discovery dropper evasion loader persistence rootkit

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/4616-134-0x0000000003020000-0x0000000003897000-memory.dmp	family_glupteba
behavioral1/memory/4616-135-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1992-141-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-148-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-149-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-150-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-151-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-152-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-153-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-154-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-155-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-156-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-157-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-158-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-159-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-160-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba
behavioral1/memory/1812-161-0x0000000000400000-0x0000000000EA7000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

224 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

1812 csrss.exe
3984 injector.exe

pid	process
224	netsh.exe

pid	process
1812	csrss.exe
3984	injector.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\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:

e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe

Drops file in Windows directory 2 IoCs

Processes:

e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe

description	ioc	process
File opened for modification	C:\Windows\rss	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
File created	C:\Windows\rss\csrss.exe	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.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

1208 schtasks.exe
2876 schtasks.exe

pid	process
1208	schtasks.exe
2876	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.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"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-91 = "Pacific SA Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-272 = "Greenwich Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.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"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1911 = "Russia TZ 10 Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-831 = "SA Eastern Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-104 = "Central Brazilian Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-692 = "Tasmania Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2062 = "North Korea Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-131 = "US Eastern Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-112 = "Eastern Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1802 = "Line Islands Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-632 = "Tokyo Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-451 = "Caucasus Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-434 = "Georgian Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2142 = "Transbaikal Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-572 = "China Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-682 = "E. Australia Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-361 = "GTB Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-981 = "Kamchatka Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.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"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	csrss.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2391 = "Aleutian Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2162 = "Altai Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.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"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-621 = "Korea Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1892 = "Russia TZ 3 Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-292 = "Central European Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.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,-672 = "AUS Eastern Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2001 = "Cabo Verde Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-452 = "Caucasus Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-105 = "Central Brazilian Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2451 = "Saint Pierre Daylight Time"	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exee54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exeinjector.execsrss.exe

pid	process
4616	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
4616	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
1812	csrss.exe
1812	csrss.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
1812	csrss.exe
1812	csrss.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe
3984	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	4616	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Token: SeImpersonatePrivilege	4616	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
Token: SeSystemEnvironmentPrivilege	1812	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.execmd.execsrss.exe

description	pid	process	target process
PID 1992 wrote to memory of 4020	1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe	cmd.exe
PID 1992 wrote to memory of 4020	1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe	cmd.exe
PID 4020 wrote to memory of 224	4020	cmd.exe	netsh.exe
PID 4020 wrote to memory of 224	4020	cmd.exe	netsh.exe
PID 1992 wrote to memory of 1812	1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe	csrss.exe
PID 1992 wrote to memory of 1812	1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe	csrss.exe
PID 1992 wrote to memory of 1812	1992	e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe	csrss.exe
PID 1812 wrote to memory of 3984	1812	csrss.exe	injector.exe
PID 1812 wrote to memory of 3984	1812	csrss.exe	injector.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\e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
"C:\Users\Admin\AppData\Local\Temp\e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4616

C:\Users\Admin\AppData\Local\Temp\e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.exe
"C:\Users\Admin\AppData\Local\Temp\e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0.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:1992

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:4020

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:224

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:1812

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:1208

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:4140

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:3984

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:2876

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

Loading Replay Monitor...

Downloads

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
4f61b0db0fbd7b7c524624af58030785

SHA1
a1febb88a29edbe10d427c4549833b6ab5befcea

SHA256
e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0

SHA512
fe82d2e20c1583ee219a0dbec864951bcf6c183a8cb12e07564c244710d3f10164146554bc8a3211f59406387e3ca806e1914ad47b49d45272f94f479efbcfce

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

MD5
4f61b0db0fbd7b7c524624af58030785

SHA1
a1febb88a29edbe10d427c4549833b6ab5befcea

SHA256
e54e80053d377c84e97906ad2bf2acb44428832c4eb839c6f5b3273c357292f0

SHA512
fe82d2e20c1583ee219a0dbec864951bcf6c183a8cb12e07564c244710d3f10164146554bc8a3211f59406387e3ca806e1914ad47b49d45272f94f479efbcfce

Download Submit
memory/1812-151-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-154-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-161-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-148-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-149-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-150-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-160-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-152-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-153-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-159-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-155-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-156-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-157-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1812-158-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/1992-141-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download
memory/4616-134-0x0000000003020000-0x0000000003897000-memory.dmp

Filesize
8.5MB

Download
memory/4616-135-0x0000000000400000-0x0000000000EA7000-memory.dmp

Filesize
10.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads