gh0strat | e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e

General

Target

e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe
Size

2.1MB
MD5

55a23539bc3282087a0379888b5e5346
SHA1

33472cc014d2cb8ec0f3906ac2163d3b56460b56
SHA256

e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e
SHA512

77df53a83022029554c0ec96d50adf53438c32df3816b9594f6d8c751f30a4240fa9433d96b6d914f15295a68e2bf5d5ecfae8cd00f02764cc03f5a85c038b7d
SSDEEP

24576:FOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNxrWPoYnJGCNY1nJGCNYB+93dt:4HPkVOBTKxrWgCka+9Nt

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral2/memory/4480-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/4496-11-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/4940-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4480-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/4496-11-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/4940-17-0x0000000010000000-0x000000001019F000-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

Processes:

Gwxyq.exe

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

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Gwxyq.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys"	Gwxyq.exe

Executes dropped EXE 2 IoCs

Processes:

Gwxyq.exeGwxyq.exe

pid	Process
4496	Gwxyq.exe
4940	Gwxyq.exe

Drops file in System32 directory 2 IoCs

Processes:

e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\Gwxyq.exe	e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe
File opened for modification	C:\Windows\SysWOW64\Gwxyq.exe	e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.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

Processes:

e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exeGwxyq.exeGwxyq.execmd.exePING.EXE

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gwxyq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gwxyq.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

Processes:

cmd.exePING.EXE

pid	Process
4892	cmd.exe
3188	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
3188	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

Gwxyq.exe

pid	Process
4940	Gwxyq.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exeGwxyq.exe

description	pid	Process
Token: SeIncBasePriorityPrivilege	4480	e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe
Token: SeLoadDriverPrivilege	4940	Gwxyq.exe
Token: 33	4940	Gwxyq.exe
Token: SeIncBasePriorityPrivilege	4940	Gwxyq.exe
Token: 33	4940	Gwxyq.exe
Token: SeIncBasePriorityPrivilege	4940	Gwxyq.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exeGwxyq.execmd.exe

description	pid	Process	procid_target
PID 4480 wrote to memory of 4892	4480	e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe	86
PID 4480 wrote to memory of 4892	4480	e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe	86
PID 4480 wrote to memory of 4892	4480	e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe	86
PID 4496 wrote to memory of 4940	4496	Gwxyq.exe	88
PID 4496 wrote to memory of 4940	4496	Gwxyq.exe	88
PID 4496 wrote to memory of 4940	4496	Gwxyq.exe	88
PID 4892 wrote to memory of 3188	4892	cmd.exe	90
PID 4892 wrote to memory of 3188	4892	cmd.exe	90
PID 4892 wrote to memory of 3188	4892	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe
"C:\Users\Admin\AppData\Local\Temp\e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4480
- 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\E77371~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4892
- - 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:3188

C:\Windows\SysWOW64\Gwxyq.exe
C:\Windows\SysWOW64\Gwxyq.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Windows\SysWOW64\Gwxyq.exe
  C:\Windows\SysWOW64\Gwxyq.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:4940

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\Gwxyq.exe

Filesize
2.1MB

MD5
55a23539bc3282087a0379888b5e5346

SHA1
33472cc014d2cb8ec0f3906ac2163d3b56460b56

SHA256
e773718d1b0fceff0263cea1b8a55e6becaad95e9d407019c773d014ab6c783e

SHA512
77df53a83022029554c0ec96d50adf53438c32df3816b9594f6d8c751f30a4240fa9433d96b6d914f15295a68e2bf5d5ecfae8cd00f02764cc03f5a85c038b7d

Download Submit
memory/4480-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4496-11-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4940-17-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads