gh0strat | 582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b

General

Target

582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe
Size

1.4MB
MD5

814facf133229c7452ab4f3b2f7bc689
SHA1

eb6fdd9949187a3b3211ec2d22595555393e7b87
SHA256

582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b
SHA512

ca69df9f1cbac9d8a98a2d3ae1c39d42f28f45a2b79f1e2090085799bda9c6adce57730f834a27893b829b1041ac5e00d5285bf1a36560da9e18500509362dea
SSDEEP

24576:F39WkOyHutimZ9VSly2hVvHW6qMnSbTBBhBMN:59qHPkVOBTK

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 2 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2504-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/2000-19-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/memory/2504-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/2000-19-0x0000000010000000-0x000000001019F000-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	Stumn.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"	Stumn.exe

Deletes itself 1 IoCs

pid	Process
2696	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2876	Stumn.exe
2000	Stumn.exe

Loads dropped DLL 1 IoCs

pid	Process
2876	Stumn.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)	\??\B:	Stumn.exe
File opened (read-only)	\??\I:	Stumn.exe
File opened (read-only)	\??\J:	Stumn.exe
File opened (read-only)	\??\K:	Stumn.exe
File opened (read-only)	\??\L:	Stumn.exe
File opened (read-only)	\??\V:	Stumn.exe
File opened (read-only)	\??\Z:	Stumn.exe
File opened (read-only)	\??\N:	Stumn.exe
File opened (read-only)	\??\Y:	Stumn.exe
File opened (read-only)	\??\G:	Stumn.exe
File opened (read-only)	\??\H:	Stumn.exe
File opened (read-only)	\??\O:	Stumn.exe
File opened (read-only)	\??\P:	Stumn.exe
File opened (read-only)	\??\E:	Stumn.exe
File opened (read-only)	\??\M:	Stumn.exe
File opened (read-only)	\??\Q:	Stumn.exe
File opened (read-only)	\??\R:	Stumn.exe
File opened (read-only)	\??\S:	Stumn.exe
File opened (read-only)	\??\T:	Stumn.exe
File opened (read-only)	\??\U:	Stumn.exe
File opened (read-only)	\??\W:	Stumn.exe
File opened (read-only)	\??\X:	Stumn.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Stumn.exe	582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe
File created	C:\Windows\SysWOW64\Stumn.exe	582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.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	Stumn.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	582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Stumn.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
2860	PING.EXE
2696	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	Stumn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Stumn.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	Stumn.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	Stumn.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	Stumn.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Stumn.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Stumn.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	Stumn.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	Stumn.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	Stumn.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	Stumn.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Stumn.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Stumn.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Stumn.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	Stumn.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	Stumn.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	Stumn.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2860	PING.EXE

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe
2000	Stumn.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2000	Stumn.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2504	582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe
Token: SeLoadDriverPrivilege	2000	Stumn.exe
Token: 33	2000	Stumn.exe
Token: SeIncBasePriorityPrivilege	2000	Stumn.exe
Token: 33	2000	Stumn.exe
Token: SeIncBasePriorityPrivilege	2000	Stumn.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2696	2504	582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe	31
PID 2504 wrote to memory of 2696	2504	582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe	31
PID 2504 wrote to memory of 2696	2504	582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe	31
PID 2504 wrote to memory of 2696	2504	582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe	31
PID 2876 wrote to memory of 2000	2876	Stumn.exe	32
PID 2876 wrote to memory of 2000	2876	Stumn.exe	32
PID 2876 wrote to memory of 2000	2876	Stumn.exe	32
PID 2876 wrote to memory of 2000	2876	Stumn.exe	32
PID 2696 wrote to memory of 2860	2696	cmd.exe	34
PID 2696 wrote to memory of 2860	2696	cmd.exe	34
PID 2696 wrote to memory of 2860	2696	cmd.exe	34
PID 2696 wrote to memory of 2860	2696	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe
"C:\Users\Admin\AppData\Local\Temp\582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2504
- 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\582446~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2696
- - 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:2860

C:\Windows\SysWOW64\Stumn.exe
C:\Windows\SysWOW64\Stumn.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\Stumn.exe
  C:\Windows\SysWOW64\Stumn.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:2000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\Stumn.exe

Filesize
1.4MB

MD5
814facf133229c7452ab4f3b2f7bc689

SHA1
eb6fdd9949187a3b3211ec2d22595555393e7b87

SHA256
582446fd4b92b3112a998e2e78e42ffc750610b007918c7420b259d04c31367b

SHA512
ca69df9f1cbac9d8a98a2d3ae1c39d42f28f45a2b79f1e2090085799bda9c6adce57730f834a27893b829b1041ac5e00d5285bf1a36560da9e18500509362dea

Download Submit
memory/2000-19-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2504-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads