gh0strat | 193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c

General

Target

193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.exe
Size

1.3MB
MD5

439ac8cec3e4e0cac179c2835b85dd60
SHA1

64d89e894053ba005ed1bd14bf4995dfda2e330e
SHA256

193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c
SHA512

b4e763d107c55c37f0535e44ebde489c443b95b1d405e7e105eb0016804a7294cf6b6111404f9b0c995d3782601376c4963b96881887c18c35a32e0ee79db944
SSDEEP

24576:TOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNM3y:+HPkVOBTKC

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 1 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/1768-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/memory/1768-0-0x0000000010000000-0x000000001019F000-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
2308	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
1992	Skcsk.exe
2428	Skcsk.exe

Loads dropped DLL 1 IoCs

pid	Process
1992	Skcsk.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Skcsk.exe	193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.exe
File opened for modification	C:\Windows\SysWOW64\Skcsk.exe	193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.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	Skcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Skcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.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
2308	cmd.exe
2676	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2676	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2428	Skcsk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1768	193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.exe
Token: SeLoadDriverPrivilege	2428	Skcsk.exe
Token: 33	2428	Skcsk.exe
Token: SeIncBasePriorityPrivilege	2428	Skcsk.exe
Token: 33	2428	Skcsk.exe
Token: SeIncBasePriorityPrivilege	2428	Skcsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 2308	1768	193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.exe	31
PID 1768 wrote to memory of 2308	1768	193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.exe	31
PID 1768 wrote to memory of 2308	1768	193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.exe	31
PID 1768 wrote to memory of 2308	1768	193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.exe	31
PID 1992 wrote to memory of 2428	1992	Skcsk.exe	32
PID 1992 wrote to memory of 2428	1992	Skcsk.exe	32
PID 1992 wrote to memory of 2428	1992	Skcsk.exe	32
PID 1992 wrote to memory of 2428	1992	Skcsk.exe	32
PID 2308 wrote to memory of 2676	2308	cmd.exe	34
PID 2308 wrote to memory of 2676	2308	cmd.exe	34
PID 2308 wrote to memory of 2676	2308	cmd.exe	34
PID 2308 wrote to memory of 2676	2308	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.exe
"C:\Users\Admin\AppData\Local\Temp\193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1768
- 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\193355~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2308
- - 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:2676

C:\Windows\SysWOW64\Skcsk.exe
C:\Windows\SysWOW64\Skcsk.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\Skcsk.exe
  C:\Windows\SysWOW64\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:2428

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\Skcsk.exe

Filesize
1.3MB

MD5
439ac8cec3e4e0cac179c2835b85dd60

SHA1
64d89e894053ba005ed1bd14bf4995dfda2e330e

SHA256
193355aeb845dad0fddbf9944389689c4c1f4e319fd8faa68988d56df727d40c

SHA512
b4e763d107c55c37f0535e44ebde489c443b95b1d405e7e105eb0016804a7294cf6b6111404f9b0c995d3782601376c4963b96881887c18c35a32e0ee79db944

Download Submit
memory/1768-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads