gh0strat | a0efb0165935acc802cfc2da23b50a7867ad7f740d747d08127fa27fa8280775

Analysis

max time kernel
148s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-10-2024 15:12

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

wtepktomp.exe
Size

27.6MB
MD5

4ce843f56cbad3ab43caec3ba7f6071d
SHA1

999ecf6203235a3efc3ffa2d599ac4b4ad3e3c2a
SHA256

ae783b3c7bcb5ea06fb5eb671da35cbab84fed9ce035c3a322733f409d1dbebe
SHA512

fc5992edb859c064a31128dc227158d79d29446d1036c453513e01ba201364b20be118243a36fffdd3deb8f3ec1da85a0896edc99e2de9e4dcdeaf49131e5b96
SSDEEP

786432:Dwn4l5mSUNsSjeNes2B2q8H9MNEjHzb141qwHX:DNfm/fUedZwXD0qA

Score

10^/10

gh0strat purplefox discovery rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 2 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2700-16491-0x0000000000400000-0x0000000001FA2000-memory.dmp	purplefox_rootkit
behavioral1/memory/7852-16494-0x0000000000400000-0x0000000001FA2000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral1/memory/2700-16491-0x0000000000400000-0x0000000001FA2000-memory.dmp	family_gh0strat
behavioral1/memory/7852-16494-0x0000000000400000-0x0000000001FA2000-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

Deletes itself 1 IoCs

pid	Process
7180	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
7852	Jkcdt.exe
6116	Jkcdt.exe

Loads dropped DLL 1 IoCs

pid	Process
7852	Jkcdt.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\V:	Jkcdt.exe
File opened (read-only)	\??\X:	Jkcdt.exe
File opened (read-only)	\??\Y:	Jkcdt.exe
File opened (read-only)	\??\G:	Jkcdt.exe
File opened (read-only)	\??\H:	Jkcdt.exe
File opened (read-only)	\??\M:	Jkcdt.exe
File opened (read-only)	\??\O:	Jkcdt.exe
File opened (read-only)	\??\R:	Jkcdt.exe
File opened (read-only)	\??\B:	Jkcdt.exe
File opened (read-only)	\??\I:	Jkcdt.exe
File opened (read-only)	\??\J:	Jkcdt.exe
File opened (read-only)	\??\N:	Jkcdt.exe
File opened (read-only)	\??\U:	Jkcdt.exe
File opened (read-only)	\??\K:	Jkcdt.exe
File opened (read-only)	\??\L:	Jkcdt.exe
File opened (read-only)	\??\P:	Jkcdt.exe
File opened (read-only)	\??\S:	Jkcdt.exe
File opened (read-only)	\??\E:	Jkcdt.exe
File opened (read-only)	\??\Q:	Jkcdt.exe
File opened (read-only)	\??\T:	Jkcdt.exe
File opened (read-only)	\??\W:	Jkcdt.exe
File opened (read-only)	\??\Z:	Jkcdt.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Jkcdt.exe	wtepktomp.exe
File opened for modification	C:\Windows\SysWOW64\Jkcdt.exe	wtepktomp.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 39 IoCs

pid	Process
2700	wtepktomp.exe
2700	wtepktomp.exe
2700	wtepktomp.exe
7852	Jkcdt.exe
7852	Jkcdt.exe
2700	wtepktomp.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.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	wtepktomp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Jkcdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Jkcdt.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
7180	cmd.exe
13700	PING.EXE

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Jkcdt.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Jkcdt.exe

Modifies data under HKEY_USERS 12 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Jkcdt.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	Jkcdt.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Jkcdt.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	Jkcdt.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	Jkcdt.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	Jkcdt.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	Jkcdt.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	Jkcdt.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	Jkcdt.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	Jkcdt.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	Jkcdt.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	Jkcdt.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
13700	PING.EXE

Suspicious behavior: EnumeratesProcesses 35 IoCs

pid	Process
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe
6116	Jkcdt.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2700	wtepktomp.exe
Token: 33	6116	Jkcdt.exe
Token: SeIncBasePriorityPrivilege	6116	Jkcdt.exe
Token: 33	6116	Jkcdt.exe
Token: SeIncBasePriorityPrivilege	6116	Jkcdt.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 7180	2700	wtepktomp.exe	32
PID 2700 wrote to memory of 7180	2700	wtepktomp.exe	32
PID 2700 wrote to memory of 7180	2700	wtepktomp.exe	32
PID 2700 wrote to memory of 7180	2700	wtepktomp.exe	32
PID 7852 wrote to memory of 6116	7852	Jkcdt.exe	33
PID 7852 wrote to memory of 6116	7852	Jkcdt.exe	33
PID 7852 wrote to memory of 6116	7852	Jkcdt.exe	33
PID 7852 wrote to memory of 6116	7852	Jkcdt.exe	33
PID 7180 wrote to memory of 13700	7180	cmd.exe	35
PID 7180 wrote to memory of 13700	7180	cmd.exe	35
PID 7180 wrote to memory of 13700	7180	cmd.exe	35
PID 7180 wrote to memory of 13700	7180	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\wtepktomp.exe
"C:\Users\Admin\AppData\Local\Temp\wtepktomp.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2700
- 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\WTEPKT~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:7180
- - 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:13700

C:\Windows\SysWOW64\Jkcdt.exe
C:\Windows\SysWOW64\Jkcdt.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:7852
- C:\Windows\SysWOW64\Jkcdt.exe
  C:\Windows\SysWOW64\Jkcdt.exe -acsi
  2⤵
  - Executes dropped EXE
  - Enumerates connected drives
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:6116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\Jkcdt.exe

Filesize
27.6MB

MD5
4ce843f56cbad3ab43caec3ba7f6071d

SHA1
999ecf6203235a3efc3ffa2d599ac4b4ad3e3c2a

SHA256
ae783b3c7bcb5ea06fb5eb671da35cbab84fed9ce035c3a322733f409d1dbebe

SHA512
fc5992edb859c064a31128dc227158d79d29446d1036c453513e01ba201364b20be118243a36fffdd3deb8f3ec1da85a0896edc99e2de9e4dcdeaf49131e5b96

Download Submit
memory/2700-542-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-16491-0x0000000000400000-0x0000000001FA2000-memory.dmp

Filesize
27.6MB

Download
memory/2700-504-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-540-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-530-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-536-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-544-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-546-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-560-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-564-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-562-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-558-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-556-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-554-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-552-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-550-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-548-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-0-0x0000000000400000-0x0000000001FA2000-memory.dmp

Filesize
27.6MB

Download
memory/2700-516-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-503-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-532-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-534-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-528-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-526-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-524-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-522-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-520-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-518-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-514-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-512-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-510-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-508-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-506-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/2700-1-0x0000000075B80000-0x0000000075BC7000-memory.dmp

Filesize
284KB

Download
memory/2700-538-0x0000000003D50000-0x0000000003E61000-memory.dmp

Filesize
1.1MB

Download
memory/7852-16492-0x0000000003410000-0x0000000004FB2000-memory.dmp

Filesize
27.6MB

Download
memory/7852-16494-0x0000000000400000-0x0000000001FA2000-memory.dmp

Filesize
27.6MB

Download