gh0strat | 0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e

General

Target

0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.exe
Size

1.4MB
MD5

11203ea26508bfff2ac2dea1625fa396
SHA1

d36fb6151fac563a3b082e395f6de31118b3ce03
SHA256

0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e
SHA512

6bd3b3981a5a4f2b36aa39721e83f428982f4b6fcb3d54eba34199104a0508e43c5d407756211fdc857401f955534984165644a29c0edf51cc30417af43117fc
SSDEEP

24576:n39WkOyHutimZ9VSly2hVvHW6qMnSbTBBhBMN:39qHPkVOBTK

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/3760-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/4816-12-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/2424-20-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/3760-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/4816-12-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/2424-20-0x0000000010000000-0x000000001019F000-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

Executes dropped EXE 2 IoCs

pid	Process
4816	Skcsk.exe
2424	Skcsk.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Skcsk.exe	0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.exe
File created	C:\Windows\SysWOW64\Skcsk.exe	0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.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	0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Skcsk.exe
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	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
3780	cmd.exe
1164	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1164	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2424	Skcsk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3760	0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.exe
Token: SeLoadDriverPrivilege	2424	Skcsk.exe
Token: 33	2424	Skcsk.exe
Token: SeIncBasePriorityPrivilege	2424	Skcsk.exe
Token: 33	2424	Skcsk.exe
Token: SeIncBasePriorityPrivilege	2424	Skcsk.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3760 wrote to memory of 3780	3760	0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.exe	85
PID 3760 wrote to memory of 3780	3760	0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.exe	85
PID 3760 wrote to memory of 3780	3760	0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.exe	85
PID 4816 wrote to memory of 2424	4816	Skcsk.exe	87
PID 4816 wrote to memory of 2424	4816	Skcsk.exe	87
PID 4816 wrote to memory of 2424	4816	Skcsk.exe	87
PID 3780 wrote to memory of 1164	3780	cmd.exe	88
PID 3780 wrote to memory of 1164	3780	cmd.exe	88
PID 3780 wrote to memory of 1164	3780	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.exe
"C:\Users\Admin\AppData\Local\Temp\0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3760
- 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\0C5B45~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3780
- - 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:1164

C:\Windows\SysWOW64\Skcsk.exe
C:\Windows\SysWOW64\Skcsk.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4816
- 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:2424

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
1.4MB

MD5
11203ea26508bfff2ac2dea1625fa396

SHA1
d36fb6151fac563a3b082e395f6de31118b3ce03

SHA256
0c5b450059f5d8ed5579e20cb3d5a6c4d684707b71ea0dcaa562ca948e7e8a9e

SHA512
6bd3b3981a5a4f2b36aa39721e83f428982f4b6fcb3d54eba34199104a0508e43c5d407756211fdc857401f955534984165644a29c0edf51cc30417af43117fc

Download Submit
memory/2424-20-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3760-0-0x0000000000400000-0x0000000000580000-memory.dmp

Filesize
1.5MB

Download
memory/3760-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4816-12-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads