glupteba | a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b

General

Target

a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Size

4.2MB
MD5

d663a1cb7b2878c65584a942804fcb32
SHA1

c3e59adaf9aa587a15bcf6ac07126fa526617bc0
SHA256

a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b
SHA512

52cd348ffc689e9b6169e597880c42709176a16e848a38f4d50360030cfd2947c6bace7cbf025768f5566afdf80076aaa68ad84c876d202cd8c4aa199de68fb2
SSDEEP

98304:OfNdT4ptf8b8DKUjc9bf3SL+7Qi3DT9b4/NVYjchdECzEhSBZJqb7L:OldT4ptf296OiL+v+/NHhdrzBZiL

Score

10^/10

glupteba discovery dropper evasion loader persistence

Malware Config

Signatures

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

Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs

Processes:

svchost.exe

description	pid	process	target process
PID 4444 created 1716	4444	svchost.exe	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
PID 4444 created 2068	4444	svchost.exe	csrss.exe
PID 4444 created 2068	4444	svchost.exe	csrss.exe
PID 4444 created 2068	4444	svchost.exe	csrss.exe

Executes dropped EXE 2 IoCs

Processes:

csrss.exeinjector.exe

pid process

2068 csrss.exe
5096 injector.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

2720 netsh.exe

pid	process
2068	csrss.exe
5096	injector.exe

pid	process
2720	netsh.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.execsrss.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\""	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\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

Drops file in Windows directory 2 IoCs

Processes:

a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe

description	ioc	process
File opened for modification	C:\Windows\rss	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
File created	C:\Windows\rss\csrss.exe	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.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

4672 schtasks.exe
4576 schtasks.exe

pid	process
4672	schtasks.exe
4576	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-571 = "China Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2411 = "Marquesas Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1862 = "Russia TZ 6 Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-242 = "Samoa Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1411 = "Syria Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-651 = "AUS Central Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-32 = "Mid-Atlantic Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3052 = "Qyzylorda Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-561 = "SE Asia Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-382 = "South Africa Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-171 = "Central Daylight Time (Mexico)"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-892 = "Morocco Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-541 = "Myanmar Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2452 = "Saint Pierre Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2592 = "Tocantins Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-791 = "SA Western Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-592 = "Malay Peninsula Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2431 = "Cuba Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2341 = "Haiti Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-232 = "Hawaiian Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-771 = "Montevideo Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-501 = "Nepal Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2751 = "Tomsk Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-932 = "Coordinated Universal Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1022 = "Bangladesh Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-282 = "Central Europe Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-731 = "Fiji Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-351 = "FLE Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-601 = "Taipei Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-462 = "Afghanistan Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-662 = "Cen. Australia Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-402 = "Arabic Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-92 = "Pacific SA Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-222 = "Alaskan Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.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"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-435 = "Georgian Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-432 = "Iran Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-192 = "Mountain Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-742 = "New Zealand Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-302 = "Romance Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1501 = "Turkey Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1661 = "Bahia Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-3141 = "South Sudan Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-631 = "Tokyo Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2181 = "Astrakhan Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-721 = "Central Pacific Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-411 = "E. Africa Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-301 = "Romance Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-1831 = "Russia TZ 2 Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-512 = "Central Asia Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-252 = "Dateline Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-891 = "Morocco Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-211 = "Pacific Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2321 = "Sakhalin Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2591 = "Tocantins Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-661 = "Cen. Australia Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-162 = "Central Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-652 = "AUS Central Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-622 = "Korea Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-2942 = "Sao Tome Standard Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-381 = "South Africa Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-931 = "Coordinated Universal Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-221 = "Alaskan Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\1e\52C64B7E\C:\Windows\system32\,@tzres.dll,-391 = "Arab Daylight Time"	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exea3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exeinjector.execsrss.exe

pid	process
1716	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
1716	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
2068	csrss.exe
2068	csrss.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
2068	csrss.exe
2068	csrss.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe
5096	injector.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

Processes:

a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exesvchost.execsrss.exe

description	pid	process
Token: SeDebugPrivilege	1716	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Token: SeImpersonatePrivilege	1716	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
Token: SeTcbPrivilege	4444	svchost.exe
Token: SeTcbPrivilege	4444	svchost.exe
Token: SeBackupPrivilege	4444	svchost.exe
Token: SeRestorePrivilege	4444	svchost.exe
Token: SeBackupPrivilege	4444	svchost.exe
Token: SeRestorePrivilege	4444	svchost.exe
Token: SeBackupPrivilege	4444	svchost.exe
Token: SeRestorePrivilege	4444	svchost.exe
Token: SeBackupPrivilege	4444	svchost.exe
Token: SeRestorePrivilege	4444	svchost.exe
Token: SeSystemEnvironmentPrivilege	2068	csrss.exe
Token: SeBackupPrivilege	4444	svchost.exe
Token: SeRestorePrivilege	4444	svchost.exe
Token: SeBackupPrivilege	4444	svchost.exe
Token: SeRestorePrivilege	4444	svchost.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

svchost.exea3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.execmd.execsrss.exe

description	pid	process	target process
PID 4444 wrote to memory of 3512	4444	svchost.exe	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
PID 4444 wrote to memory of 3512	4444	svchost.exe	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
PID 4444 wrote to memory of 3512	4444	svchost.exe	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
PID 3512 wrote to memory of 4876	3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe	cmd.exe
PID 3512 wrote to memory of 4876	3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe	cmd.exe
PID 4876 wrote to memory of 2720	4876	cmd.exe	netsh.exe
PID 4876 wrote to memory of 2720	4876	cmd.exe	netsh.exe
PID 3512 wrote to memory of 2068	3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe	csrss.exe
PID 3512 wrote to memory of 2068	3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe	csrss.exe
PID 3512 wrote to memory of 2068	3512	a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe	csrss.exe
PID 4444 wrote to memory of 4672	4444	svchost.exe	schtasks.exe
PID 4444 wrote to memory of 4672	4444	svchost.exe	schtasks.exe
PID 4444 wrote to memory of 4580	4444	svchost.exe	schtasks.exe
PID 4444 wrote to memory of 4580	4444	svchost.exe	schtasks.exe
PID 2068 wrote to memory of 5096	2068	csrss.exe	injector.exe
PID 2068 wrote to memory of 5096	2068	csrss.exe	injector.exe
PID 4444 wrote to memory of 4576	4444	svchost.exe	schtasks.exe
PID 4444 wrote to memory of 4576	4444	svchost.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
"C:\Users\Admin\AppData\Local\Temp\a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1716

C:\Users\Admin\AppData\Local\Temp\a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe
"C:\Users\Admin\AppData\Local\Temp\a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b.exe"
2⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3512

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:4876

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:2720

C:\Windows\rss\csrss.exe
C:\Windows\rss\csrss.exe
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2068

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:4672

C:\Windows\SYSTEM32\schtasks.exe
schtasks /delete /tn ScheduledUpdate /f
4⤵
PID:4580

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:5096

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:4576

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon
1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4444

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

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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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
4.2MB

MD5
d663a1cb7b2878c65584a942804fcb32

SHA1
c3e59adaf9aa587a15bcf6ac07126fa526617bc0

SHA256
a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b

SHA512
52cd348ffc689e9b6169e597880c42709176a16e848a38f4d50360030cfd2947c6bace7cbf025768f5566afdf80076aaa68ad84c876d202cd8c4aa199de68fb2

Download Submit
C:\Windows\rss\csrss.exe
Filesize
4.2MB

MD5
d663a1cb7b2878c65584a942804fcb32

SHA1
c3e59adaf9aa587a15bcf6ac07126fa526617bc0

SHA256
a3fb3bac8b6ce48199da0184ca11936a7b1f07af9a2c0e3c8661bd877263ff5b

SHA512
52cd348ffc689e9b6169e597880c42709176a16e848a38f4d50360030cfd2947c6bace7cbf025768f5566afdf80076aaa68ad84c876d202cd8c4aa199de68fb2

Download Submit
memory/1716-133-0x0000000002E10000-0x0000000003687000-memory.dmp

Filesize
8.5MB

Download
memory/1716-134-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1716-136-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/1716-132-0x0000000002A1F000-0x0000000002E08000-memory.dmp

Filesize
3.9MB

Download
memory/2068-153-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2068-141-0x0000000000000000-mapping.dmp

Download
memory/2068-145-0x0000000002E00000-0x00000000031E9000-memory.dmp

Filesize
3.9MB

Download
memory/2068-146-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2720-140-0x0000000000000000-mapping.dmp

Download
memory/3512-137-0x00000000029ED000-0x0000000002DD6000-memory.dmp

Filesize
3.9MB

Download
memory/3512-144-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3512-138-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/3512-135-0x0000000000000000-mapping.dmp

Download
memory/4576-152-0x0000000000000000-mapping.dmp

Download
memory/4580-148-0x0000000000000000-mapping.dmp

Download
memory/4672-147-0x0000000000000000-mapping.dmp

Download
memory/4876-139-0x0000000000000000-mapping.dmp

Download
memory/5096-149-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads