Malware Analysis Report

2025-08-10 17:53

Sample ID 230822-3wk8wsgd33
Target 0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1
SHA256 0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1
Tags
gh0strat purplefox persistence rat rootkit trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1

Threat Level: Known bad

The file 0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1 was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan upx

Gh0strat

Detect PurpleFox Rootkit

Gh0st RAT payload

PurpleFox

Sets service image path in registry

Drops file in Drivers directory

UPX packed file

Loads dropped DLL

Executes dropped EXE

Deletes itself

Drops file in System32 directory

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: LoadsDriver

Runs ping.exe

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-08-22 23:51

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-22 23:51

Reported

2023-08-22 23:54

Platform

win7-20230712-en

Max time kernel

150s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe"

Signatures

Detect PurpleFox Rootkit

rootkit
Description Indicator Process Target
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Gh0st RAT payload

Description Indicator Process Target
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Gh0strat

rat gh0strat

PurpleFox

rootkit trojan purplefox

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\drivers\QAssist.sys C:\Windows\SysWOW64\Jbcdt.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" C:\Windows\SysWOW64\Jbcdt.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
N/A N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Jbcdt.exe C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe N/A
File opened for modification C:\Windows\SysWOW64\Jbcdt.exe C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: LoadsDriver

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2676 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe C:\Windows\SysWOW64\cmd.exe
PID 2676 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe C:\Windows\SysWOW64\cmd.exe
PID 2676 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe C:\Windows\SysWOW64\cmd.exe
PID 2676 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe C:\Windows\SysWOW64\cmd.exe
PID 1876 wrote to memory of 1440 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 1876 wrote to memory of 1440 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 1876 wrote to memory of 1440 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 1876 wrote to memory of 1440 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 1876 wrote to memory of 1440 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 1876 wrote to memory of 1440 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 1876 wrote to memory of 1440 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 1520 wrote to memory of 2196 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1520 wrote to memory of 2196 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1520 wrote to memory of 2196 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1520 wrote to memory of 2196 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe

"C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe"

C:\Windows\SysWOW64\Jbcdt.exe

C:\Windows\SysWOW64\Jbcdt.exe -auto

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\0575C3~1.EXE > nul

C:\Windows\SysWOW64\Jbcdt.exe

C:\Windows\SysWOW64\Jbcdt.exe -acsi

C:\Windows\SysWOW64\PING.EXE

ping -n 2 127.0.0.1

Network

Country Destination Domain Proto
CN 43.143.210.13:8060 tcp
CN 43.143.210.13:8060 tcp
CN 43.143.210.13:8060 tcp
CN 43.143.210.13:8060 tcp
CN 43.143.210.13:8060 tcp

Files

memory/2676-53-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2676-55-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2676-56-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2676-57-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Jbcdt.exe

MD5 1621e7cc411c8a27adad7fd2afe1485c
SHA1 41c07add4edf52b22416b20904edc2ef315d2397
SHA256 21e07fac3743ecd6a33b6b2e1521e1852884281e833f8bead4b046f87aef4a49
SHA512 0de1b4590744dc10ffec2dc6183469805485f37ba3ccf2f0102b04c27546e3ee260b9c63062f895122365c36df2203f792f6b5f24d5e590a402fbbe43124e7e2

memory/1876-65-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Jbcdt.exe

MD5 1621e7cc411c8a27adad7fd2afe1485c
SHA1 41c07add4edf52b22416b20904edc2ef315d2397
SHA256 21e07fac3743ecd6a33b6b2e1521e1852884281e833f8bead4b046f87aef4a49
SHA512 0de1b4590744dc10ffec2dc6183469805485f37ba3ccf2f0102b04c27546e3ee260b9c63062f895122365c36df2203f792f6b5f24d5e590a402fbbe43124e7e2

C:\Windows\SysWOW64\Jbcdt.exe

MD5 1621e7cc411c8a27adad7fd2afe1485c
SHA1 41c07add4edf52b22416b20904edc2ef315d2397
SHA256 21e07fac3743ecd6a33b6b2e1521e1852884281e833f8bead4b046f87aef4a49
SHA512 0de1b4590744dc10ffec2dc6183469805485f37ba3ccf2f0102b04c27546e3ee260b9c63062f895122365c36df2203f792f6b5f24d5e590a402fbbe43124e7e2

\Windows\SysWOW64\Jbcdt.exe

MD5 1621e7cc411c8a27adad7fd2afe1485c
SHA1 41c07add4edf52b22416b20904edc2ef315d2397
SHA256 21e07fac3743ecd6a33b6b2e1521e1852884281e833f8bead4b046f87aef4a49
SHA512 0de1b4590744dc10ffec2dc6183469805485f37ba3ccf2f0102b04c27546e3ee260b9c63062f895122365c36df2203f792f6b5f24d5e590a402fbbe43124e7e2

memory/2676-71-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1440-76-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1876-73-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1440-77-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1440-80-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1440-82-0x0000000010000000-0x00000000101BA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-22 23:51

Reported

2023-08-22 23:54

Platform

win10v2004-20230703-en

Max time kernel

149s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe"

Signatures

Detect PurpleFox Rootkit

rootkit
Description Indicator Process Target
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Gh0st RAT payload

Description Indicator Process Target
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Gh0strat

rat gh0strat

PurpleFox

rootkit trojan purplefox

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\drivers\QAssist.sys C:\Windows\SysWOW64\Jbcdt.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" C:\Windows\SysWOW64\Jbcdt.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
N/A N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\Jbcdt.exe C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe N/A
File created C:\Windows\SysWOW64\Jbcdt.exe C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: LoadsDriver

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe

"C:\Users\Admin\AppData\Local\Temp\0575c396843f6701ad18dcb27fa352e9cfe8d85bebd3507e019a343223038ca1.exe"

C:\Windows\SysWOW64\Jbcdt.exe

C:\Windows\SysWOW64\Jbcdt.exe -auto

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\0575C3~1.EXE > nul

C:\Windows\SysWOW64\Jbcdt.exe

C:\Windows\SysWOW64\Jbcdt.exe -acsi

C:\Windows\SysWOW64\PING.EXE

ping -n 2 127.0.0.1

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 126.138.241.8.in-addr.arpa udp
CN 43.143.210.13:8060 tcp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
CN 43.143.210.13:8060 tcp
CN 43.143.210.13:8060 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
CN 43.143.210.13:8060 tcp
US 8.8.8.8:53 130.109.69.13.in-addr.arpa udp
CN 43.143.210.13:8060 tcp

Files

memory/1876-133-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1876-136-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1876-137-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Jbcdt.exe

MD5 1621e7cc411c8a27adad7fd2afe1485c
SHA1 41c07add4edf52b22416b20904edc2ef315d2397
SHA256 21e07fac3743ecd6a33b6b2e1521e1852884281e833f8bead4b046f87aef4a49
SHA512 0de1b4590744dc10ffec2dc6183469805485f37ba3ccf2f0102b04c27546e3ee260b9c63062f895122365c36df2203f792f6b5f24d5e590a402fbbe43124e7e2

C:\Windows\SysWOW64\Jbcdt.exe

MD5 1621e7cc411c8a27adad7fd2afe1485c
SHA1 41c07add4edf52b22416b20904edc2ef315d2397
SHA256 21e07fac3743ecd6a33b6b2e1521e1852884281e833f8bead4b046f87aef4a49
SHA512 0de1b4590744dc10ffec2dc6183469805485f37ba3ccf2f0102b04c27546e3ee260b9c63062f895122365c36df2203f792f6b5f24d5e590a402fbbe43124e7e2

memory/3620-143-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/3620-146-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/3620-147-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Jbcdt.exe

MD5 1621e7cc411c8a27adad7fd2afe1485c
SHA1 41c07add4edf52b22416b20904edc2ef315d2397
SHA256 21e07fac3743ecd6a33b6b2e1521e1852884281e833f8bead4b046f87aef4a49
SHA512 0de1b4590744dc10ffec2dc6183469805485f37ba3ccf2f0102b04c27546e3ee260b9c63062f895122365c36df2203f792f6b5f24d5e590a402fbbe43124e7e2

memory/3620-151-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1876-150-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2412-154-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2412-155-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2412-153-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2412-156-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2412-159-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2412-161-0x0000000010000000-0x00000000101BA000-memory.dmp