gh0strat | c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142

General

Target

c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.exe
Size

1.4MB
MD5

747cfab3e1cb5aa6735d1cbf1408ae60
SHA1

e231b96d6a5c411b85001a680cd0dedbaee32cf7
SHA256

c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142
SHA512

4684d4703c80f1ae783711418654aa3dd41013e43ceb11edfce1b54af0b0343cf7c49a71093f5d523aa8a505fe489c56ea49f1fabbcb982d4958bfeb439c2c66
SSDEEP

24576:F39WkOyHutimZ9VSly2hVvHW6qMnSbTBBhBMN:59qHPkVOBTK

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/4592-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/996-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/5116-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4592-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/996-10-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/5116-17-0x0000000010000000-0x000000001019F000-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
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
996	Skcsk.exe
5116	Skcsk.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Skcsk.exe	c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.exe
File created	C:\Windows\SysWOW64\Skcsk.exe	c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.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	c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.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
1484	cmd.exe
4652	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4652	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
5116	Skcsk.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4592	c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.exe
Token: SeLoadDriverPrivilege	5116	Skcsk.exe
Token: 33	5116	Skcsk.exe
Token: SeIncBasePriorityPrivilege	5116	Skcsk.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 1484	4592	c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.exe	85
PID 4592 wrote to memory of 1484	4592	c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.exe	85
PID 4592 wrote to memory of 1484	4592	c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.exe	85
PID 996 wrote to memory of 5116	996	Skcsk.exe	86
PID 996 wrote to memory of 5116	996	Skcsk.exe	86
PID 996 wrote to memory of 5116	996	Skcsk.exe	86
PID 1484 wrote to memory of 4652	1484	cmd.exe	88
PID 1484 wrote to memory of 4652	1484	cmd.exe	88
PID 1484 wrote to memory of 4652	1484	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.exe
"C:\Users\Admin\AppData\Local\Temp\c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4592
- 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\C0854F~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1484
- - 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:4652

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:996
- 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:5116

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
747cfab3e1cb5aa6735d1cbf1408ae60

SHA1
e231b96d6a5c411b85001a680cd0dedbaee32cf7

SHA256
c0854fe2e5181b26fb9baec7eabcff9e3781cadf0968afce8f2acbe796b11142

SHA512
4684d4703c80f1ae783711418654aa3dd41013e43ceb11edfce1b54af0b0343cf7c49a71093f5d523aa8a505fe489c56ea49f1fabbcb982d4958bfeb439c2c66

Download Submit
memory/996-10-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4592-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/5116-17-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads