glupteba | 223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564

General

Target

223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Size

4.1MB
MD5

3c3e5e054d80fe6a93805f951aad3197
SHA1

b04691e1925d6f303a794fa0b9f2e96283084613
SHA256

223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564
SHA512

f6ff2affa2c51a576c9a8b1db6826c6977cd67718f0c91d4968e2d381ab8e2e71a9d3083c57c9f915e0bea28eef9b288476102169bf333a94735caf01a46242e
SSDEEP

98304:evej2jzuLTCK6bGHQe8qXT4IB6EaKjsS0McNup3lXC81Vy5sDCDB:IjzuijuXTAZKn0JNgX91VyeDCDB

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/4296-134-0x0000000005150000-0x00000000059C7000-memory.dmp	family_glupteba
behavioral1/memory/4296-135-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/3740-141-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-148-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-149-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-150-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-151-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-152-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-153-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-154-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-155-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-156-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-157-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-158-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-159-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-160-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba
behavioral1/memory/1384-161-0x0000000000400000-0x0000000002F49000-memory.dmp	family_glupteba

Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

2120 netsh.exe
Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

1384 csrss.exe
3432 injector.exe

pid	process
2120	netsh.exe

pid	process
1384	csrss.exe
3432	injector.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.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\""	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.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
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:

223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe

description ioc process

File opened (read-only) \??\VBoxMiniRdrDN 223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe

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

description	ioc	process
File opened (read-only)	\??\VBoxMiniRdrDN	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe

Drops file in Windows directory 2 IoCs

Processes:

223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe

description	ioc	process
File opened for modification	C:\Windows\rss	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
File created	C:\Windows\rss\csrss.exe	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

5056 3740 WerFault.exe 223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.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

3956 schtasks.exe
1564 schtasks.exe

pid	pid_target	process	target process
5056	3740	WerFault.exe	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe

pid	process
3956	schtasks.exe
1564	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-161 = "Central Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-741 = "New Zealand Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-792 = "SA Western Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-142 = "Canada Central Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-231 = "Hawaiian Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1801 = "Line Islands Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1412 = "Syria Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2412 = "Marquesas Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-591 = "Malay Peninsula Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2892 = "Sudan Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-191 = "Mountain Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-172 = "Central Standard Time (Mexico)"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-262 = "GMT Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2871 = "Magallanes Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-384 = "Namibia Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-722 = "Central Pacific Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-681 = "E. Australia Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2372 = "Easter Island Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2342 = "Haiti Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-962 = "Paraguay Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1832 = "Russia TZ 2 Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-151 = "Central America Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-241 = "Samoa Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-42 = "E. South America Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-331 = "E. Europe Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-371 = "Jerusalem Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.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"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-82 = "Atlantic Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1021 = "Bangladesh Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-141 = "Canada Central Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-491 = "India Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-372 = "Jerusalem Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-841 = "Argentina Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.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"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2872 = "Magallanes Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-11 = "Azores Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-52 = "Greenland Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.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"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-511 = "Central Asia Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2141 = "Transbaikal Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1041 = "Ulaanbaatar Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1972 = "Belarus Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2002 = "Cabo Verde Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1722 = "Libya Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1971 = "Belarus Daylight Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-732 = "Fiji Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exeinjector.execsrss.exe

pid	process
4296	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
4296	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
1384	csrss.exe
1384	csrss.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
1384	csrss.exe
1384	csrss.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe
3432	injector.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	4296	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Token: SeImpersonatePrivilege	4296	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
Token: SeSystemEnvironmentPrivilege	1384	csrss.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.execmd.execsrss.exe

description	pid	process	target process
PID 3740 wrote to memory of 3972	3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe	cmd.exe
PID 3740 wrote to memory of 3972	3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe	cmd.exe
PID 3972 wrote to memory of 2120	3972	cmd.exe	netsh.exe
PID 3972 wrote to memory of 2120	3972	cmd.exe	netsh.exe
PID 3740 wrote to memory of 1384	3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe	csrss.exe
PID 3740 wrote to memory of 1384	3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe	csrss.exe
PID 3740 wrote to memory of 1384	3740	223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe	csrss.exe
PID 1384 wrote to memory of 3432	1384	csrss.exe	injector.exe
PID 1384 wrote to memory of 3432	1384	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\223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
"C:\Users\Admin\AppData\Local\Temp\223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4296

C:\Users\Admin\AppData\Local\Temp\223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.exe
"C:\Users\Admin\AppData\Local\Temp\223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564.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:3740

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:3972

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:2120

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1384

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:3956

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:3624

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:3432

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:1564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3740 -s 844
3⤵
- Program crash
PID:5056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3740 -ip 3740
1⤵
PID:4752

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\csrss\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
3c3e5e054d80fe6a93805f951aad3197

SHA1
b04691e1925d6f303a794fa0b9f2e96283084613

SHA256
223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564

SHA512
f6ff2affa2c51a576c9a8b1db6826c6977cd67718f0c91d4968e2d381ab8e2e71a9d3083c57c9f915e0bea28eef9b288476102169bf333a94735caf01a46242e

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

MD5
3c3e5e054d80fe6a93805f951aad3197

SHA1
b04691e1925d6f303a794fa0b9f2e96283084613

SHA256
223fdcb7b2addedab9da616b3abc6b107e8a9f6a53221cbc2e4643d19f726564

SHA512
f6ff2affa2c51a576c9a8b1db6826c6977cd67718f0c91d4968e2d381ab8e2e71a9d3083c57c9f915e0bea28eef9b288476102169bf333a94735caf01a46242e

Download Submit
memory/1384-151-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-154-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-161-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-148-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-149-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-150-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-160-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-152-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-153-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-159-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-155-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-156-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-157-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/1384-158-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/3740-141-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download
memory/4296-134-0x0000000005150000-0x00000000059C7000-memory.dmp

Filesize
8.5MB

Download
memory/4296-135-0x0000000000400000-0x0000000002F49000-memory.dmp

Filesize
43.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads