gh0strat | c9279ecdd8061a0eac0ebf9dc022168adcb2c35c3be9234aa95e4887ab8cc459

General

Target

209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe
Size

940KB
MD5

c6d42e472da07b2416d8cf3fc53c1d72
SHA1

14ce51b4db350ee4b4d27b8345ba9c54eb451e39
SHA256

209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2
SHA512

d6483329d18c460f2fe35deb88db54d4ddd15d3687b1528aabda3cbe8f1410e2ad8358a01daa6f709919411d04d92a05a037c125f7728d4b8f3736e6f35ce666
SSDEEP

24576:uyVctzwg4HziULzs2CVUaAupwS0Bj9CjIv9dVrG3h:uyCtzCTiwCJiKjInVr

Score

10^/10

gh0strat purplefox rat rootkit trojan vmprotect

Malware Config

Signatures

Detect PurpleFox Rootkit 7 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral2/memory/4440-136-0x0000000000400000-0x0000000000683000-memory.dmp	purplefox_rootkit
behavioral2/memory/4440-135-0x0000000010000000-0x00000000101A0000-memory.dmp	purplefox_rootkit
behavioral2/memory/3376-148-0x0000000010000000-0x00000000101A0000-memory.dmp	purplefox_rootkit
behavioral2/memory/3376-157-0x0000000000400000-0x0000000000683000-memory.dmp	purplefox_rootkit
behavioral2/memory/4440-155-0x0000000000400000-0x0000000000683000-memory.dmp	purplefox_rootkit
behavioral2/memory/4044-159-0x0000000010000000-0x00000000101A0000-memory.dmp	purplefox_rootkit
behavioral2/memory/4044-166-0x0000000000400000-0x0000000000683000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 7 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4440-136-0x0000000000400000-0x0000000000683000-memory.dmp	family_gh0strat
behavioral2/memory/4440-135-0x0000000010000000-0x00000000101A0000-memory.dmp	family_gh0strat
behavioral2/memory/3376-148-0x0000000010000000-0x00000000101A0000-memory.dmp	family_gh0strat
behavioral2/memory/3376-157-0x0000000000400000-0x0000000000683000-memory.dmp	family_gh0strat
behavioral2/memory/4440-155-0x0000000000400000-0x0000000000683000-memory.dmp	family_gh0strat
behavioral2/memory/4044-159-0x0000000010000000-0x00000000101A0000-memory.dmp	family_gh0strat
behavioral2/memory/4044-166-0x0000000000400000-0x0000000000683000-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
Executes dropped EXE 2 IoCs

Processes:

GSkcsk.exeGSkcsk.exe

pid process

3376 GSkcsk.exe
4044 GSkcsk.exe

pid	process
3376	GSkcsk.exe
4044	GSkcsk.exe

VMProtect packed file 8 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
behavioral2/memory/4440-133-0x0000000000400000-0x0000000000683000-memory.dmp	vmprotect
behavioral2/memory/4440-136-0x0000000000400000-0x0000000000683000-memory.dmp	vmprotect
C:\Windows\SysWOW64\GSkcsk.exe	vmprotect
C:\Windows\SysWOW64\GSkcsk.exe	vmprotect
behavioral2/memory/3376-157-0x0000000000400000-0x0000000000683000-memory.dmp	vmprotect
behavioral2/memory/4440-155-0x0000000000400000-0x0000000000683000-memory.dmp	vmprotect
C:\Windows\SysWOW64\GSkcsk.exe	vmprotect
behavioral2/memory/4044-166-0x0000000000400000-0x0000000000683000-memory.dmp	vmprotect

Drops file in System32 directory 2 IoCs

Processes:

209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe

description	ioc	process
File created	C:\Windows\SysWOW64\GSkcsk.exe	209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe
File opened for modification	C:\Windows\SysWOW64\GSkcsk.exe	209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

3880 PING.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe

description pid process

Token: SeIncBasePriorityPrivilege 4440 209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe

pid	process
3880	PING.EXE

description	pid	process
Token: SeIncBasePriorityPrivilege	4440	209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exeGSkcsk.execmd.exe

description	pid	process	target process
PID 4440 wrote to memory of 4840	4440	209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe	cmd.exe
PID 4440 wrote to memory of 4840	4440	209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe	cmd.exe
PID 4440 wrote to memory of 4840	4440	209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe	cmd.exe
PID 3376 wrote to memory of 4044	3376	GSkcsk.exe	GSkcsk.exe
PID 3376 wrote to memory of 4044	3376	GSkcsk.exe	GSkcsk.exe
PID 3376 wrote to memory of 4044	3376	GSkcsk.exe	GSkcsk.exe
PID 4840 wrote to memory of 3880	4840	cmd.exe	PING.EXE
PID 4840 wrote to memory of 3880	4840	cmd.exe	PING.EXE
PID 4840 wrote to memory of 3880	4840	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe
"C:\Users\Admin\AppData\Local\Temp\209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4440

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\209B83~1.EXE > nul
2⤵
- Suspicious use of WriteProcessMemory
PID:4840

C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
3⤵
- Runs ping.exe
PID:3880

C:\Windows\SysWOW64\GSkcsk.exe
C:\Windows\SysWOW64\GSkcsk.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3376

C:\Windows\SysWOW64\GSkcsk.exe
C:\Windows\SysWOW64\GSkcsk.exe -acsi
2⤵
- Executes dropped EXE
PID:4044

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\GSkcsk.exe
Filesize
940KB

MD5
c6d42e472da07b2416d8cf3fc53c1d72

SHA1
14ce51b4db350ee4b4d27b8345ba9c54eb451e39

SHA256
209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2

SHA512
d6483329d18c460f2fe35deb88db54d4ddd15d3687b1528aabda3cbe8f1410e2ad8358a01daa6f709919411d04d92a05a037c125f7728d4b8f3736e6f35ce666

Download Submit
C:\Windows\SysWOW64\GSkcsk.exe
Filesize
940KB

MD5
c6d42e472da07b2416d8cf3fc53c1d72

SHA1
14ce51b4db350ee4b4d27b8345ba9c54eb451e39

SHA256
209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2

SHA512
d6483329d18c460f2fe35deb88db54d4ddd15d3687b1528aabda3cbe8f1410e2ad8358a01daa6f709919411d04d92a05a037c125f7728d4b8f3736e6f35ce666

Download Submit
C:\Windows\SysWOW64\GSkcsk.exe
Filesize
940KB

MD5
c6d42e472da07b2416d8cf3fc53c1d72

SHA1
14ce51b4db350ee4b4d27b8345ba9c54eb451e39

SHA256
209b830eaa3deaf113291266d72d05ab83d8c9719a50dc0ea12202adc64a07c2

SHA512
d6483329d18c460f2fe35deb88db54d4ddd15d3687b1528aabda3cbe8f1410e2ad8358a01daa6f709919411d04d92a05a037c125f7728d4b8f3736e6f35ce666

Download Submit
memory/3376-148-0x0000000010000000-0x00000000101A0000-memory.dmp

Filesize
1.6MB

Download
memory/3376-157-0x0000000000400000-0x0000000000683000-memory.dmp

Filesize
2.5MB

Download
memory/4044-159-0x0000000010000000-0x00000000101A0000-memory.dmp

Filesize
1.6MB

Download
memory/4044-166-0x0000000000400000-0x0000000000683000-memory.dmp

Filesize
2.5MB

Download
memory/4440-133-0x0000000000400000-0x0000000000683000-memory.dmp

Filesize
2.5MB

Download
memory/4440-136-0x0000000000400000-0x0000000000683000-memory.dmp

Filesize
2.5MB

Download
memory/4440-135-0x0000000010000000-0x00000000101A0000-memory.dmp

Filesize
1.6MB

Download
memory/4440-155-0x0000000000400000-0x0000000000683000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads