gh0strat | 147b3fad1138c98d0ea5b781577f03dd7cf80b541bfc111c95760a26b80a003e

General

Target

gh0strat.exe
Size

396KB
MD5

4a3044c9ac651ba36a5735162ecc2ca6
SHA1

b45a2af26780f047fd918c3b1bb089f3f4478212
SHA256

147b3fad1138c98d0ea5b781577f03dd7cf80b541bfc111c95760a26b80a003e
SHA512

daa2b6734fae52ba5d3fec155dca05f464b1573193a2ebc746b798f669bc7b1b11c5637a6df555dd468e7a669194e14651419a436879e296366488393b9dfc57
SSDEEP

12288:sb5DbPowllDRf9Ib2JONfUcri1RcQP2at:s9Dbg6lV9C2JOBUIc12at

Score

10^/10

gh0strat purplefox rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral1/memory/912-56-0x0000000010000000-0x00000000101B9000-memory.dmp	purplefox_rootkit
behavioral1/memory/912-57-0x0000000010000000-0x00000000101B9000-memory.dmp	purplefox_rootkit
behavioral1/memory/824-72-0x0000000010000000-0x00000000101B9000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/912-56-0x0000000010000000-0x00000000101B9000-memory.dmp	family_gh0strat
behavioral1/memory/912-57-0x0000000010000000-0x00000000101B9000-memory.dmp	family_gh0strat
behavioral1/memory/824-72-0x0000000010000000-0x00000000101B9000-memory.dmp	family_gh0strat

Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1160 cmd.exe
Executes dropped EXE 2 IoCs

Processes:

Jbrja.exeJbrja.exe

pid process

2020 Jbrja.exe
824 Jbrja.exe
Loads dropped DLL 1 IoCs

Processes:

Jbrja.exe

pid process

2020 Jbrja.exe

pid	process
1160	cmd.exe

pid	process
2020	Jbrja.exe
824	Jbrja.exe

pid	process
2020	Jbrja.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/912-54-0x0000000010000000-0x00000000101B9000-memory.dmp	upx
behavioral1/memory/912-56-0x0000000010000000-0x00000000101B9000-memory.dmp	upx
behavioral1/memory/912-57-0x0000000010000000-0x00000000101B9000-memory.dmp	upx
behavioral1/memory/824-72-0x0000000010000000-0x00000000101B9000-memory.dmp	upx

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Jbrja.exe

description	ioc	process
File opened (read-only)	\??\B:	Jbrja.exe
File opened (read-only)	\??\J:	Jbrja.exe
File opened (read-only)	\??\P:	Jbrja.exe
File opened (read-only)	\??\T:	Jbrja.exe
File opened (read-only)	\??\V:	Jbrja.exe
File opened (read-only)	\??\W:	Jbrja.exe
File opened (read-only)	\??\F:	Jbrja.exe
File opened (read-only)	\??\G:	Jbrja.exe
File opened (read-only)	\??\M:	Jbrja.exe
File opened (read-only)	\??\O:	Jbrja.exe
File opened (read-only)	\??\Y:	Jbrja.exe
File opened (read-only)	\??\E:	Jbrja.exe
File opened (read-only)	\??\H:	Jbrja.exe
File opened (read-only)	\??\K:	Jbrja.exe
File opened (read-only)	\??\L:	Jbrja.exe
File opened (read-only)	\??\Q:	Jbrja.exe
File opened (read-only)	\??\R:	Jbrja.exe
File opened (read-only)	\??\Z:	Jbrja.exe
File opened (read-only)	\??\I:	Jbrja.exe
File opened (read-only)	\??\N:	Jbrja.exe
File opened (read-only)	\??\S:	Jbrja.exe
File opened (read-only)	\??\U:	Jbrja.exe
File opened (read-only)	\??\X:	Jbrja.exe

Drops file in System32 directory 2 IoCs

Processes:

gh0strat.exe

description ioc process

File created C:\Windows\SysWOW64\Jbrja.exe gh0strat.exe
File opened for modification C:\Windows\SysWOW64\Jbrja.exe gh0strat.exe

description	ioc	process
File created	C:\Windows\SysWOW64\Jbrja.exe	gh0strat.exe
File opened for modification	C:\Windows\SysWOW64\Jbrja.exe	gh0strat.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Jbrja.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Jbrja.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Jbrja.exe

Modifies data under HKEY_USERS 6 IoCs

Processes:

Jbrja.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	Jbrja.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	Jbrja.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	Jbrja.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	Jbrja.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	Jbrja.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	Jbrja.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1000 PING.EXE

pid	process
1000	PING.EXE

Suspicious behavior: EnumeratesProcesses 33 IoCs

Processes:

Jbrja.exe

pid	process
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe
824	Jbrja.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

gh0strat.exe

description pid process

Token: SeIncBasePriorityPrivilege 912 gh0strat.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	912	gh0strat.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

gh0strat.exeJbrja.execmd.exe

description	pid	process	target process
PID 912 wrote to memory of 1160	912	gh0strat.exe	cmd.exe
PID 912 wrote to memory of 1160	912	gh0strat.exe	cmd.exe
PID 912 wrote to memory of 1160	912	gh0strat.exe	cmd.exe
PID 912 wrote to memory of 1160	912	gh0strat.exe	cmd.exe
PID 2020 wrote to memory of 824	2020	Jbrja.exe	Jbrja.exe
PID 2020 wrote to memory of 824	2020	Jbrja.exe	Jbrja.exe
PID 2020 wrote to memory of 824	2020	Jbrja.exe	Jbrja.exe
PID 2020 wrote to memory of 824	2020	Jbrja.exe	Jbrja.exe
PID 2020 wrote to memory of 824	2020	Jbrja.exe	Jbrja.exe
PID 2020 wrote to memory of 824	2020	Jbrja.exe	Jbrja.exe
PID 2020 wrote to memory of 824	2020	Jbrja.exe	Jbrja.exe
PID 1160 wrote to memory of 1000	1160	cmd.exe	PING.EXE
PID 1160 wrote to memory of 1000	1160	cmd.exe	PING.EXE
PID 1160 wrote to memory of 1000	1160	cmd.exe	PING.EXE
PID 1160 wrote to memory of 1000	1160	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\gh0strat.exe
"C:\Users\Admin\AppData\Local\Temp\gh0strat.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:912

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\gh0strat.exe > nul
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1160

C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
3⤵
- Runs ping.exe
PID:1000

C:\Windows\SysWOW64\Jbrja.exe
C:\Windows\SysWOW64\Jbrja.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2020

C:\Windows\SysWOW64\Jbrja.exe
C:\Windows\SysWOW64\Jbrja.exe -acsi
2⤵
- Executes dropped EXE
- Enumerates connected drives
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
PID:824

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\Jbrja.exe
Filesize
396KB

MD5
4a3044c9ac651ba36a5735162ecc2ca6

SHA1
b45a2af26780f047fd918c3b1bb089f3f4478212

SHA256
147b3fad1138c98d0ea5b781577f03dd7cf80b541bfc111c95760a26b80a003e

SHA512
daa2b6734fae52ba5d3fec155dca05f464b1573193a2ebc746b798f669bc7b1b11c5637a6df555dd468e7a669194e14651419a436879e296366488393b9dfc57

Download Submit
C:\Windows\SysWOW64\Jbrja.exe
Filesize
396KB

MD5
4a3044c9ac651ba36a5735162ecc2ca6

SHA1
b45a2af26780f047fd918c3b1bb089f3f4478212

SHA256
147b3fad1138c98d0ea5b781577f03dd7cf80b541bfc111c95760a26b80a003e

SHA512
daa2b6734fae52ba5d3fec155dca05f464b1573193a2ebc746b798f669bc7b1b11c5637a6df555dd468e7a669194e14651419a436879e296366488393b9dfc57

Download Submit
\Windows\SysWOW64\Jbrja.exe
Filesize
396KB

MD5
4a3044c9ac651ba36a5735162ecc2ca6

SHA1
b45a2af26780f047fd918c3b1bb089f3f4478212

SHA256
147b3fad1138c98d0ea5b781577f03dd7cf80b541bfc111c95760a26b80a003e

SHA512
daa2b6734fae52ba5d3fec155dca05f464b1573193a2ebc746b798f669bc7b1b11c5637a6df555dd468e7a669194e14651419a436879e296366488393b9dfc57

Download Submit
memory/824-72-0x0000000010000000-0x00000000101B9000-memory.dmp

Filesize
1.7MB

Download
memory/912-54-0x0000000010000000-0x00000000101B9000-memory.dmp

Filesize
1.7MB

Download
memory/912-56-0x0000000010000000-0x00000000101B9000-memory.dmp

Filesize
1.7MB

Download
memory/912-57-0x0000000010000000-0x00000000101B9000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads