gh0strat | 5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad

Analysis

max time kernel
5s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2023, 10:45

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General

Target

5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad.exe
Size

1.4MB
MD5

400644e43f796fb3c7c48dead2d5997e
SHA1

0afa85b6fcfdfff1f014240421d8af64106fad4a
SHA256

5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad
SHA512

7a6f14f52557c097431224f3169fb287e84b93ed6a68fb1bb0324dd7baba0e013a7d83d4015eee87e1c0170596e8594311d5d794f35f5b225c37c20411ca5455
SSDEEP

24576:wOyHutimZ9VSly2hVvHW6qMnSbTBBhBMN6c:5HPkVOBTK6

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/3640-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/2124-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3052-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/3640-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/2124-10-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3052-17-0x0000000010000000-0x000000001019F000-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	Pqiyq.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"	Pqiyq.exe

Executes dropped EXE 2 IoCs

pid	Process
2124	Pqiyq.exe
3052	Pqiyq.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)	\??\M:	Pqiyq.exe
File opened (read-only)	\??\O:	Pqiyq.exe
File opened (read-only)	\??\H:	Pqiyq.exe
File opened (read-only)	\??\L:	Pqiyq.exe
File opened (read-only)	\??\N:	Pqiyq.exe
File opened (read-only)	\??\Y:	Pqiyq.exe
File opened (read-only)	\??\Z:	Pqiyq.exe
File opened (read-only)	\??\J:	Pqiyq.exe
File opened (read-only)	\??\G:	Pqiyq.exe
File opened (read-only)	\??\I:	Pqiyq.exe
File opened (read-only)	\??\P:	Pqiyq.exe
File opened (read-only)	\??\U:	Pqiyq.exe
File opened (read-only)	\??\B:	Pqiyq.exe
File opened (read-only)	\??\K:	Pqiyq.exe
File opened (read-only)	\??\Q:	Pqiyq.exe
File opened (read-only)	\??\R:	Pqiyq.exe
File opened (read-only)	\??\S:	Pqiyq.exe
File opened (read-only)	\??\T:	Pqiyq.exe
File opened (read-only)	\??\V:	Pqiyq.exe
File opened (read-only)	\??\W:	Pqiyq.exe
File opened (read-only)	\??\E:	Pqiyq.exe
File opened (read-only)	\??\X:	Pqiyq.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Pqiyq.exe	5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad.exe
File opened for modification	C:\Windows\SysWOW64\Pqiyq.exe	5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad.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	Pqiyq.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Pqiyq.exe

Modifies data under HKEY_USERS 5 IoCs

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4164	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe
3052	Pqiyq.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3052	Pqiyq.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3640	5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad.exe
Token: SeLoadDriverPrivilege	3052	Pqiyq.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3640 wrote to memory of 2232	3640	5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad.exe	23
PID 3640 wrote to memory of 2232	3640	5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad.exe	23
PID 3640 wrote to memory of 2232	3640	5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad.exe	23
PID 2124 wrote to memory of 3052	2124	Pqiyq.exe	22
PID 2124 wrote to memory of 3052	2124	Pqiyq.exe	22
PID 2124 wrote to memory of 3052	2124	Pqiyq.exe	22
PID 2232 wrote to memory of 4164	2232	cmd.exe	20
PID 2232 wrote to memory of 4164	2232	cmd.exe	20
PID 2232 wrote to memory of 4164	2232	cmd.exe	20

C:\Users\Admin\AppData\Local\Temp\5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad.exe
"C:\Users\Admin\AppData\Local\Temp\5b0f4b6990fcd218cae55530e1fa4b5f7d18d5d58bf16407c02b17b58ea31cad.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3640
- 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\5B0F4B~1.EXE > nul
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2232

C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
1⤵
- Runs ping.exe
PID:4164

C:\Windows\SysWOW64\Pqiyq.exe
C:\Windows\SysWOW64\Pqiyq.exe -acsi
1⤵
- Drops file in Drivers directory
- Sets service image path in registry
- Executes dropped EXE
- Enumerates connected drives
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
PID:3052

C:\Windows\SysWOW64\Pqiyq.exe
C:\Windows\SysWOW64\Pqiyq.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2124

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2124-10-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3052-17-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3640-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download