gh0strat | 55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf

General

Target

55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.exe
Size

3.5MB
MD5

24a89759ceffa4f3535fe73e46d11438
SHA1

752a4a1de91d9225cece5f60d507515e246597cf
SHA256

55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf
SHA512

c634af32b6eedcf1cf67f49c425daa132691ac2dabc2bf3a66acc94c5deb03cf7cf7450fe597bebf7006166149f2ee2dd979069e419b6a776bab026826a242e2
SSDEEP

24576:VOyHutimZ9VSly2hVvHW6qMnSbTBBhBMN6h2:IHPkVOBTK02

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/4092-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/1236-11-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/852-18-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4092-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/1236-11-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/852-18-0x0000000010000000-0x000000001019F000-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	Phxph.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"	Phxph.exe

Executes dropped EXE 2 IoCs

pid	Process
1236	Phxph.exe
852	Phxph.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Phxph.exe	55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.exe
File opened for modification	C:\Windows\SysWOW64\Phxph.exe	55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.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	55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Phxph.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Phxph.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
708	cmd.exe
908	PING.EXE

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Phxph.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Phxph.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Phxph.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
908	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
852	Phxph.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4092	55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.exe
Token: SeLoadDriverPrivilege	852	Phxph.exe
Token: 33	852	Phxph.exe
Token: SeIncBasePriorityPrivilege	852	Phxph.exe
Token: 33	852	Phxph.exe
Token: SeIncBasePriorityPrivilege	852	Phxph.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4092 wrote to memory of 708	4092	55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.exe	83
PID 4092 wrote to memory of 708	4092	55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.exe	83
PID 4092 wrote to memory of 708	4092	55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.exe	83
PID 1236 wrote to memory of 852	1236	Phxph.exe	85
PID 1236 wrote to memory of 852	1236	Phxph.exe	85
PID 1236 wrote to memory of 852	1236	Phxph.exe	85
PID 708 wrote to memory of 908	708	cmd.exe	86
PID 708 wrote to memory of 908	708	cmd.exe	86
PID 708 wrote to memory of 908	708	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.exe
"C:\Users\Admin\AppData\Local\Temp\55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4092
- 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\55AF4C~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:708
- - 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:908

C:\Windows\SysWOW64\Phxph.exe
C:\Windows\SysWOW64\Phxph.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Windows\SysWOW64\Phxph.exe
  C:\Windows\SysWOW64\Phxph.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:852

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

Remote System Discovery

1

T1018

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\Phxph.exe

Filesize
3.5MB

MD5
24a89759ceffa4f3535fe73e46d11438

SHA1
752a4a1de91d9225cece5f60d507515e246597cf

SHA256
55af4c367acd615faf1cf7fb4ef90342017ecc55694b24fee418245f64591fdf

SHA512
c634af32b6eedcf1cf67f49c425daa132691ac2dabc2bf3a66acc94c5deb03cf7cf7450fe597bebf7006166149f2ee2dd979069e419b6a776bab026826a242e2

Download Submit
memory/852-18-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/1236-11-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4092-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads