gh0strat | 76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235

Analysis

max time kernel
148s
max time network
155s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12-12-2024 23:26

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General

Target

76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe
Size

1.4MB
MD5

42eb813b6d1d942487977b2d1c99849d
SHA1

ed176942204d852d66b1b0401431be6b6233325a
SHA256

76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235
SHA512

13784b32ff6dd7b8a699251a30a9d75e0e967d447a01e1ef357596652ff26a8c5a5a812db2d8d08c581f9d9f1f071ed28030546e7b2a57095d9e00927bfbd0f9
SSDEEP

24576:MXU1T7iVITXAY9Pl4+va/61tvjnqZ3D6iyzwQngZqIVC9nSJhTNJDINp4X17uCD/:zTxDva/6nj3LbnqVVSSvINp4ks

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
behavioral1/memory/2796-16488-0x0000000000400000-0x000000000062A000-memory.dmp	purplefox_rootkit
behavioral1/memory/8100-16491-0x0000000000400000-0x000000000062A000-memory.dmp	purplefox_rootkit
behavioral1/memory/5100-25196-0x0000000000400000-0x000000000062A000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral1/memory/2796-16488-0x0000000000400000-0x000000000062A000-memory.dmp	family_gh0strat
behavioral1/memory/8100-16491-0x0000000000400000-0x000000000062A000-memory.dmp	family_gh0strat
behavioral1/memory/5100-25196-0x0000000000400000-0x000000000062A000-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
Gh0strat family
gh0strat
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Purplefox family
purplefox

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
5872	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
8100	Vnfvn.exe
5100	Vnfvn.exe

Loads dropped DLL 1 IoCs

pid	Process
8100	Vnfvn.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)	\??\P:	Vnfvn.exe
File opened (read-only)	\??\R:	Vnfvn.exe
File opened (read-only)	\??\T:	Vnfvn.exe
File opened (read-only)	\??\V:	Vnfvn.exe
File opened (read-only)	\??\E:	Vnfvn.exe
File opened (read-only)	\??\G:	Vnfvn.exe
File opened (read-only)	\??\L:	Vnfvn.exe
File opened (read-only)	\??\M:	Vnfvn.exe
File opened (read-only)	\??\X:	Vnfvn.exe
File opened (read-only)	\??\I:	Vnfvn.exe
File opened (read-only)	\??\Q:	Vnfvn.exe
File opened (read-only)	\??\S:	Vnfvn.exe
File opened (read-only)	\??\W:	Vnfvn.exe
File opened (read-only)	\??\N:	Vnfvn.exe
File opened (read-only)	\??\O:	Vnfvn.exe
File opened (read-only)	\??\U:	Vnfvn.exe
File opened (read-only)	\??\Y:	Vnfvn.exe
File opened (read-only)	\??\B:	Vnfvn.exe
File opened (read-only)	\??\H:	Vnfvn.exe
File opened (read-only)	\??\J:	Vnfvn.exe
File opened (read-only)	\??\K:	Vnfvn.exe
File opened (read-only)	\??\Z:	Vnfvn.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Vnfvn.exe	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe
File opened for modification	C:\Windows\SysWOW64\Vnfvn.exe	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 32 IoCs

pid	Process
2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe
2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe
2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe
2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe
8100	Vnfvn.exe
2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe
8100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.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	Vnfvn.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	Vnfvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.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
5872	cmd.exe
3568	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	Vnfvn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Vnfvn.exe

Modifies data under HKEY_USERS 11 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	Vnfvn.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	Vnfvn.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	Vnfvn.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	Vnfvn.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	Vnfvn.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	Vnfvn.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	Vnfvn.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	Vnfvn.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Vnfvn.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	Vnfvn.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Vnfvn.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3568	PING.EXE

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe
5100	Vnfvn.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
5100	Vnfvn.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe
Token: SeLoadDriverPrivilege	5100	Vnfvn.exe
Token: 33	5100	Vnfvn.exe
Token: SeIncBasePriorityPrivilege	5100	Vnfvn.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 5872	2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe	31
PID 2796 wrote to memory of 5872	2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe	31
PID 2796 wrote to memory of 5872	2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe	31
PID 2796 wrote to memory of 5872	2796	76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe	31
PID 8100 wrote to memory of 5100	8100	Vnfvn.exe	32
PID 8100 wrote to memory of 5100	8100	Vnfvn.exe	32
PID 8100 wrote to memory of 5100	8100	Vnfvn.exe	32
PID 8100 wrote to memory of 5100	8100	Vnfvn.exe	32
PID 5872 wrote to memory of 3568	5872	cmd.exe	34
PID 5872 wrote to memory of 3568	5872	cmd.exe	34
PID 5872 wrote to memory of 3568	5872	cmd.exe	34
PID 5872 wrote to memory of 3568	5872	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe
"C:\Users\Admin\AppData\Local\Temp\76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2796
- 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\76A236~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5872
- - 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:3568

C:\Windows\SysWOW64\Vnfvn.exe
C:\Windows\SysWOW64\Vnfvn.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:8100
- C:\Windows\SysWOW64\Vnfvn.exe
  C:\Windows\SysWOW64\Vnfvn.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Enumerates connected drives
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - 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:5100

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

Replay Monitor

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Downloads

C:\Windows\SysWOW64\Vnfvn.exe

Filesize
1.4MB

MD5
42eb813b6d1d942487977b2d1c99849d

SHA1
ed176942204d852d66b1b0401431be6b6233325a

SHA256
76a236349c0820e4dfba81e3382e50833ee238452c0c271d6a0cf83b4fcca235

SHA512
13784b32ff6dd7b8a699251a30a9d75e0e967d447a01e1ef357596652ff26a8c5a5a812db2d8d08c581f9d9f1f071ed28030546e7b2a57095d9e00927bfbd0f9

Download Submit
memory/2796-542-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-560-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-504-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-506-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-508-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-510-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-522-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-524-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-516-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-518-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-526-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-514-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-512-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-528-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-530-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-532-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-534-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-0-0x0000000000400000-0x000000000062A000-memory.dmp

Filesize
2.2MB

Download
memory/2796-520-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-536-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-550-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-540-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-544-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-546-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-548-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-538-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-562-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-564-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-503-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-558-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-556-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-555-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-552-0x0000000002340000-0x0000000002451000-memory.dmp

Filesize
1.1MB

Download
memory/2796-4339-0x0000000000400000-0x000000000062A000-memory.dmp

Filesize
2.2MB

Download
memory/2796-1-0x0000000076BD0000-0x0000000076C17000-memory.dmp

Filesize
284KB

Download
memory/2796-16488-0x0000000000400000-0x000000000062A000-memory.dmp

Filesize
2.2MB

Download
memory/5100-25196-0x0000000000400000-0x000000000062A000-memory.dmp

Filesize
2.2MB

Download
memory/8100-16491-0x0000000000400000-0x000000000062A000-memory.dmp

Filesize
2.2MB

Download