gh0strat | 9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b

Analysis

max time kernel
120s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 02:11

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General

Target

9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe
Size

1.5MB
MD5

65fe8e2dc05c8ae90caf91809c77bbc3
SHA1

317c19da97aa28e7459d4dce179730fa1b272d1a
SHA256

9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b
SHA512

893efe2b0148d28e2919d806976df452f22914223408f68c5c33917392ddaefba5f167dff19a2057062bf640ba00c4aaeb3e295e7c49a708808e769ae811a071
SSDEEP

24576:eYVLN+uGOyHutimZ9VSly2hVvHW6qMnSbTBBhBMN:BTT3HPkVOBTK

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/1192-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3092-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3948-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/1192-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3092-10-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3948-17-0x0000000010000000-0x000000001019F000-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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\QAssist.sys	Jbrja.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys"	Jbrja.exe

Executes dropped EXE 2 IoCs

pid	Process
3092	Jbrja.exe
3948	Jbrja.exe

Enumerates connected drives 3 TTPs 22 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

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

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Jbrja.exe	9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe
File opened for modification	C:\Windows\SysWOW64\Jbrja.exe	9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Jbrja.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Jbrja.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4204	PING.EXE
1656	cmd.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

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 5 IoCs

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4204	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe
3948	Jbrja.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3948	Jbrja.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1192	9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe
Token: SeLoadDriverPrivilege	3948	Jbrja.exe
Token: 33	3948	Jbrja.exe
Token: SeIncBasePriorityPrivilege	3948	Jbrja.exe
Token: 33	3948	Jbrja.exe
Token: SeIncBasePriorityPrivilege	3948	Jbrja.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 1656	1192	9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe	83
PID 1192 wrote to memory of 1656	1192	9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe	83
PID 1192 wrote to memory of 1656	1192	9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe	83
PID 3092 wrote to memory of 3948	3092	Jbrja.exe	85
PID 3092 wrote to memory of 3948	3092	Jbrja.exe	85
PID 3092 wrote to memory of 3948	3092	Jbrja.exe	85
PID 1656 wrote to memory of 4204	1656	cmd.exe	86
PID 1656 wrote to memory of 4204	1656	cmd.exe	86
PID 1656 wrote to memory of 4204	1656	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe
"C:\Users\Admin\AppData\Local\Temp\9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1192
- 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\9740FB~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1656
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4204

C:\Windows\SysWOW64\Jbrja.exe
C:\Windows\SysWOW64\Jbrja.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Windows\SysWOW64\Jbrja.exe
  C:\Windows\SysWOW64\Jbrja.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Enumerates connected drives
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:3948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\Jbrja.exe

Filesize
1.5MB

MD5
65fe8e2dc05c8ae90caf91809c77bbc3

SHA1
317c19da97aa28e7459d4dce179730fa1b272d1a

SHA256
9740fb71580a1e6809c694ebd1aa132e76d0dc985dbc0721ae6590f3bf5ed19b

SHA512
893efe2b0148d28e2919d806976df452f22914223408f68c5c33917392ddaefba5f167dff19a2057062bf640ba00c4aaeb3e295e7c49a708808e769ae811a071

Download Submit
memory/1192-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3092-10-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3948-17-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download