Malware Analysis Report

2024-09-22 15:10

Sample ID 240603-rydq2sah99
Target c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17
SHA256 c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17
Tags
gh0strat purplefox persistence rat rootkit trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17

Threat Level: Known bad

The file c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17 was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan upx

Detect PurpleFox Rootkit

Gh0strat

PurpleFox

Gh0st RAT payload

Drops file in Drivers directory

Sets service image path in registry

Loads dropped DLL

Executes dropped EXE

UPX packed file

Drops file in System32 directory

Unsigned PE

Suspicious use of WriteProcessMemory

Runs ping.exe

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: LoadsDriver

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-03 14:35

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 14:35

Reported

2024-06-03 14:38

Platform

win7-20240508-en

Max time kernel

150s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.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\TXPlatforn.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\TXPlatforn.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\RVN.exe N/A
N/A N/A C:\Windows\SysWOW64\TXPlatforn.exe N/A
N/A N/A C:\Windows\SysWOW64\TXPlatforn.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\TXPlatforn.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe N/A
File opened for modification C:\Windows\SysWOW64\TXPlatforn.exe C:\Users\Admin\AppData\Local\Temp\RVN.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\TXPlatforn.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2228 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 2228 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 2228 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 2228 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 2228 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 2228 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 2228 wrote to memory of 2424 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 2424 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\RVN.exe C:\Windows\SysWOW64\cmd.exe
PID 2424 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\RVN.exe C:\Windows\SysWOW64\cmd.exe
PID 2424 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\RVN.exe C:\Windows\SysWOW64\cmd.exe
PID 2424 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\RVN.exe C:\Windows\SysWOW64\cmd.exe
PID 3032 wrote to memory of 2748 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 3032 wrote to memory of 2748 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 3032 wrote to memory of 2748 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 3032 wrote to memory of 2748 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 3032 wrote to memory of 2748 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 3032 wrote to memory of 2748 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 3032 wrote to memory of 2748 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 2716 wrote to memory of 2908 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2716 wrote to memory of 2908 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2716 wrote to memory of 2908 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2716 wrote to memory of 2908 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe

"C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe"

C:\Users\Admin\AppData\Local\Temp\RVN.exe

C:\Users\Admin\AppData\Local\Temp\\RVN.exe

C:\Windows\SysWOW64\TXPlatforn.exe

C:\Windows\SysWOW64\TXPlatforn.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\RVN.exe > nul

C:\Windows\SysWOW64\TXPlatforn.exe

C:\Windows\SysWOW64\TXPlatforn.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 hackerinvasion.f3322.net udp

Files

\Users\Admin\AppData\Local\Temp\RVN.exe

MD5 80ade1893dec9cab7f2e63538a464fcc
SHA1 c06614da33a65eddb506db00a124a3fc3f5be02e
SHA256 57a920389c044e3f5cf93dabff67070b4511e79779b6f874e08f92d8b0d7afbd
SHA512 fffd4f3fccb5301b3c7a5b3bd92747f31549fbd9d0803fe5d502d1bb0ef979140988718c2ee1406ed3e755790d275185e120a56cbcb5ed2eadf62b5cdbfc4cc4

memory/2424-6-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/2424-10-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/2424-8-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/2424-9-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/3032-19-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/2748-28-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/2424-23-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/3032-29-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/2748-30-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/2748-34-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/2748-35-0x0000000010000000-0x00000000101B6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\HD_X.dat

MD5 c3b2e17e3ed6e98684507b447ab83598
SHA1 c4293b372039af61358b5176cd338d1b55bc3fc6
SHA256 c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17
SHA512 82c3e3588d4e6ab8a249811e9c188032c92923fef51d952a244bec7b91e099ca143736f66069a7a6b37c786a7d3f7f3926ad4a0d4c0423b75213cdea48247b52

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 14:35

Reported

2024-06-03 14:38

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe"

Signatures

Detect PurpleFox Rootkit

rootkit
Description Indicator Process Target
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Gh0st RAT payload

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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\TXPlatforn.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\TXPlatforn.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\RVN.exe N/A
N/A N/A C:\Windows\SysWOW64\TXPlatforn.exe N/A
N/A N/A C:\Windows\SysWOW64\TXPlatforn.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\TXPlatforn.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe N/A
File opened for modification C:\Windows\SysWOW64\TXPlatforn.exe C:\Users\Admin\AppData\Local\Temp\RVN.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\TXPlatforn.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3780 wrote to memory of 3264 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 3780 wrote to memory of 3264 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 3780 wrote to memory of 3264 N/A C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe C:\Users\Admin\AppData\Local\Temp\RVN.exe
PID 1408 wrote to memory of 924 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 1408 wrote to memory of 924 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 1408 wrote to memory of 924 N/A C:\Windows\SysWOW64\TXPlatforn.exe C:\Windows\SysWOW64\TXPlatforn.exe
PID 3264 wrote to memory of 676 N/A C:\Users\Admin\AppData\Local\Temp\RVN.exe C:\Windows\SysWOW64\cmd.exe
PID 3264 wrote to memory of 676 N/A C:\Users\Admin\AppData\Local\Temp\RVN.exe C:\Windows\SysWOW64\cmd.exe
PID 3264 wrote to memory of 676 N/A C:\Users\Admin\AppData\Local\Temp\RVN.exe C:\Windows\SysWOW64\cmd.exe
PID 676 wrote to memory of 1472 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 676 wrote to memory of 1472 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 676 wrote to memory of 1472 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe

"C:\Users\Admin\AppData\Local\Temp\c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17.exe"

C:\Users\Admin\AppData\Local\Temp\RVN.exe

C:\Users\Admin\AppData\Local\Temp\\RVN.exe

C:\Windows\SysWOW64\TXPlatforn.exe

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

C:\Windows\SysWOW64\TXPlatforn.exe

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

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\RVN.exe > nul

C:\Windows\SysWOW64\PING.EXE

ping -n 2 127.0.0.1

Network

Country Destination Domain Proto
US 8.8.8.8:53 hackerinvasion.f3322.net udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 hackerinvasion.f3322.net udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 hackerinvasion.f3322.net udp
US 8.8.8.8:53 hackerinvasion.f3322.net udp
US 8.8.8.8:53 hackerinvasion.f3322.net udp

Files

C:\Users\Admin\AppData\Local\Temp\RVN.exe

MD5 80ade1893dec9cab7f2e63538a464fcc
SHA1 c06614da33a65eddb506db00a124a3fc3f5be02e
SHA256 57a920389c044e3f5cf93dabff67070b4511e79779b6f874e08f92d8b0d7afbd
SHA512 fffd4f3fccb5301b3c7a5b3bd92747f31549fbd9d0803fe5d502d1bb0ef979140988718c2ee1406ed3e755790d275185e120a56cbcb5ed2eadf62b5cdbfc4cc4

memory/3264-6-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/3264-11-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/3264-8-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/3264-7-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/1408-16-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/1408-14-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/1408-18-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/1408-17-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/924-24-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/1408-25-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/924-26-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/924-30-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/924-31-0x0000000010000000-0x00000000101B6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\HD_X.dat

MD5 c3b2e17e3ed6e98684507b447ab83598
SHA1 c4293b372039af61358b5176cd338d1b55bc3fc6
SHA256 c52c8887118672ef3d81258d600a95606b2606ec1f0c37de04871a847147ee17
SHA512 82c3e3588d4e6ab8a249811e9c188032c92923fef51d952a244bec7b91e099ca143736f66069a7a6b37c786a7d3f7f3926ad4a0d4c0423b75213cdea48247b52