gh0strat | 934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82

General

Target

934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe
Size

1.3MB
MD5

e0c915507befa8295c381d618b0463cf
SHA1

de67e5e8cbf16c0cb2088774fa0cf1d797eaa0e9
SHA256

934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82
SHA512

799081469c2c50574408065828183d27ea7081298c490bf5246314f8924dac7487b84396ce1113e4df64a04346650cc76ffa6a14ae3483f30dca98daab2a969a
SSDEEP

24576:MOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNT:9HPkVOBTK

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/2420-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/2452-19-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/memory/2420-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/2452-19-0x0000000010000000-0x000000001019F000-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
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	Skcsk.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"	Skcsk.exe

Deletes itself 1 IoCs

pid	Process
1148	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2456	Skcsk.exe
2452	Skcsk.exe

Loads dropped DLL 1 IoCs

pid	Process
2456	Skcsk.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Google\Skcsk.exe	934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe
File opened for modification	C:\Program Files (x86)\Google\Skcsk.exe	934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Skcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Skcsk.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
2756	PING.EXE
1148	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2756	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2452	Skcsk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2420	934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe
Token: SeLoadDriverPrivilege	2452	Skcsk.exe
Token: 33	2452	Skcsk.exe
Token: SeIncBasePriorityPrivilege	2452	Skcsk.exe
Token: 33	2452	Skcsk.exe
Token: SeIncBasePriorityPrivilege	2452	Skcsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 1148	2420	934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe	32
PID 2420 wrote to memory of 1148	2420	934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe	32
PID 2420 wrote to memory of 1148	2420	934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe	32
PID 2420 wrote to memory of 1148	2420	934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe	32
PID 2456 wrote to memory of 2452	2456	Skcsk.exe	33
PID 2456 wrote to memory of 2452	2456	Skcsk.exe	33
PID 2456 wrote to memory of 2452	2456	Skcsk.exe	33
PID 2456 wrote to memory of 2452	2456	Skcsk.exe	33
PID 1148 wrote to memory of 2756	1148	cmd.exe	35
PID 1148 wrote to memory of 2756	1148	cmd.exe	35
PID 1148 wrote to memory of 2756	1148	cmd.exe	35
PID 1148 wrote to memory of 2756	1148	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe
"C:\Users\Admin\AppData\Local\Temp\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2420
- 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\934234~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1148
- - 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:2756

C:\Program Files (x86)\Google\Skcsk.exe
"C:\Program Files (x86)\Google\Skcsk.exe" -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Program Files (x86)\Google\Skcsk.exe
  "C:\Program Files (x86)\Google\Skcsk.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:2452

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:\Program Files (x86)\Google\Skcsk.exe

Filesize
1.3MB

MD5
e0c915507befa8295c381d618b0463cf

SHA1
de67e5e8cbf16c0cb2088774fa0cf1d797eaa0e9

SHA256
934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82

SHA512
799081469c2c50574408065828183d27ea7081298c490bf5246314f8924dac7487b84396ce1113e4df64a04346650cc76ffa6a14ae3483f30dca98daab2a969a

Download Submit
memory/2420-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2452-19-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads