gh0strat | f17af5296ff826f4199381574dccb3dcb8a5deeb811e40929f95c722ab70aeb7

Analysis

max time kernel
1s
max time network
60s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
02-09-2024 17:24

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General

Target

1.exe
Size

1.5MB
MD5

2978ce3b334332c2bf8e6c45652c599c
SHA1

d297e5a04848168db55cb7aa43ec9f68e88e3ff5
SHA256

f17af5296ff826f4199381574dccb3dcb8a5deeb811e40929f95c722ab70aeb7
SHA512

57f28c9287b185183f190f3864edd84de8e6f8a28ab86468eff195a717eb57bc1c89c2b144f3a60b5c8880983ef85e3387bb0e1805d3295bfbcc323a996a5b20
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
behavioral4/memory/1940-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral4/memory/4780-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral4/memory/1956-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral4/memory/1940-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral4/memory/4780-10-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral4/memory/1956-17-0x0000000010000000-0x000000001019F000-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
4780	Jbrja.exe
1956	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)	\??\E:	Jbrja.exe
File opened (read-only)	\??\H:	Jbrja.exe
File opened (read-only)	\??\J:	Jbrja.exe
File opened (read-only)	\??\S:	Jbrja.exe
File opened (read-only)	\??\V:	Jbrja.exe
File opened (read-only)	\??\X:	Jbrja.exe
File opened (read-only)	\??\B:	Jbrja.exe
File opened (read-only)	\??\I:	Jbrja.exe
File opened (read-only)	\??\K:	Jbrja.exe
File opened (read-only)	\??\M:	Jbrja.exe
File opened (read-only)	\??\O:	Jbrja.exe
File opened (read-only)	\??\P:	Jbrja.exe
File opened (read-only)	\??\Q:	Jbrja.exe
File opened (read-only)	\??\T:	Jbrja.exe
File opened (read-only)	\??\U:	Jbrja.exe
File opened (read-only)	\??\Y:	Jbrja.exe
File opened (read-only)	\??\Z:	Jbrja.exe
File opened (read-only)	\??\G:	Jbrja.exe
File opened (read-only)	\??\L:	Jbrja.exe
File opened (read-only)	\??\N:	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	1.exe
File opened for modification	C:\Windows\SysWOW64\Jbrja.exe	1.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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1.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
2020	cmd.exe
4504	PING.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\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
Key created	\REGISTRY\USER\.DEFAULT\Software	Jbrja.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	Jbrja.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4504	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
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1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
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1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
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1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe
1956	Jbrja.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
1956	Jbrja.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1940	1.exe
Token: SeLoadDriverPrivilege	1956	Jbrja.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 2020	1940	1.exe	79
PID 1940 wrote to memory of 2020	1940	1.exe	79
PID 1940 wrote to memory of 2020	1940	1.exe	79
PID 4780 wrote to memory of 1956	4780	Jbrja.exe	81
PID 4780 wrote to memory of 1956	4780	Jbrja.exe	81
PID 4780 wrote to memory of 1956	4780	Jbrja.exe	81
PID 2020 wrote to memory of 4504	2020	cmd.exe	82
PID 2020 wrote to memory of 4504	2020	cmd.exe	82
PID 2020 wrote to memory of 4504	2020	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\1.exe
"C:\Users\Admin\AppData\Local\Temp\1.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1940
- 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\1.exe > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2020
- - 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:4504

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:4780
- 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:1956

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
2978ce3b334332c2bf8e6c45652c599c

SHA1
d297e5a04848168db55cb7aa43ec9f68e88e3ff5

SHA256
f17af5296ff826f4199381574dccb3dcb8a5deeb811e40929f95c722ab70aeb7

SHA512
57f28c9287b185183f190f3864edd84de8e6f8a28ab86468eff195a717eb57bc1c89c2b144f3a60b5c8880983ef85e3387bb0e1805d3295bfbcc323a996a5b20

Download Submit
memory/1940-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/1956-17-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4780-10-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download