gh0strat | fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30-06-2024 03:50

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General

Target

fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
Size

3.1MB
MD5

9248a9fc5df948dbb159b679f115fa35
SHA1

45cfa6903b5a4b6b591769cab17dc4981c915918
SHA256

fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c
SHA512

43d383cf3218c1570f3444dab9d493f866c77c338b9f690b0ac40644497125939e3f9dbd56b6977e2ffe0deb631b8fb5ae064c063427d4e3fc3d48608caefddb
SSDEEP

49152:6CwsbCANnKXferL7Vwe/Gg0P+WhKGalI81eaS0hK:tws2ANnKXOaeOgmhKGiI8189

Score

10^/10

gh0strat purplefox bootkit persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 4 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral1/memory/2560-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2560-21-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2540-44-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2540-50-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 5 IoCs

Processes:

resource	yara_rule
\Windows\SysWOW64\259394812.txt	family_gh0strat
behavioral1/memory/2560-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2560-21-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2540-44-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2540-50-0x0000000010000000-0x00000000101B6000-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

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2560-20-0x0000000010000000-0x00000000101B6000-memory.dmp	UPX
behavioral1/memory/2560-21-0x0000000010000000-0x00000000101B6000-memory.dmp	UPX
behavioral1/memory/2560-18-0x0000000010000000-0x00000000101B6000-memory.dmp	UPX
behavioral1/memory/2540-44-0x0000000010000000-0x00000000101B6000-memory.dmp	UPX
behavioral1/memory/2540-50-0x0000000010000000-0x00000000101B6000-memory.dmp	UPX

Drops file in Drivers directory 1 IoCs

Processes:

TXPlatfor.exe

description ioc process

File created C:\Windows\system32\drivers\QAssist.sys TXPlatfor.exe
Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs
persistence

Terminal Services DLL
T1505.005

Processes:

R.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Remote Data\Parameters\ServiceDll = "C:\\Windows\\system32\\259394812.txt" R.exe
Sets service image path in registry 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Processes:

TXPlatfor.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" TXPlatfor.exe
Executes dropped EXE 6 IoCs

Processes:

R.exeN.exeTXPlatfor.exeTXPlatfor.exeHD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exeRemote Data.exe

pid process

1840 R.exe
2560 N.exe
2504 TXPlatfor.exe
2540 TXPlatfor.exe
2928 HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
1636 Remote Data.exe

description	ioc	process
File created	C:\Windows\system32\drivers\QAssist.sys	TXPlatfor.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Remote Data\Parameters\ServiceDll = "C:\\Windows\\system32\\259394812.txt"	R.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys"	TXPlatfor.exe

pid	process
1840	R.exe
2560	N.exe
2504	TXPlatfor.exe
2540	TXPlatfor.exe
2928	HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
1636	Remote Data.exe

Loads dropped DLL 8 IoCs

Processes:

fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exeR.exesvchost.exeTXPlatfor.exeRemote Data.exe

pid	process
2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
1840	R.exe
1664	svchost.exe
2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
2504	TXPlatfor.exe
2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
1664	svchost.exe
1636	Remote Data.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2560-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2560-21-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2560-18-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2540-44-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2540-50-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe

description ioc process

File opened for modification \??\PhysicalDrive0 HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe

Drops file in System32 directory 6 IoCs

Processes:

svchost.exeN.exeR.exe

description	ioc	process
File created	C:\Windows\SysWOW64\Remote Data.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\Remote Data.exe	svchost.exe
File created	C:\Windows\SysWOW64\TXPlatfor.exe	N.exe
File opened for modification	C:\Windows\SysWOW64\TXPlatfor.exe	N.exe
File created	C:\Windows\SysWOW64\259394812.txt	R.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	R.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2108 PING.EXE
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe

pid process

2240 fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
Suspicious behavior: LoadsDriver 1 IoCs

Processes:

TXPlatfor.exe

pid process

2540 TXPlatfor.exe

pid	process
2108	PING.EXE

pid	process
2540	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

N.exeTXPlatfor.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	2560	N.exe
Token: SeLoadDriverPrivilege	2540	TXPlatfor.exe
Token: 33	2540	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2540	TXPlatfor.exe
Token: 33	2540	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2540	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe

pid process

2240 fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
2240 fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exeN.exeTXPlatfor.execmd.exesvchost.exe

description	pid	process	target process
PID 2240 wrote to memory of 1840	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	R.exe
PID 2240 wrote to memory of 1840	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	R.exe
PID 2240 wrote to memory of 1840	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	R.exe
PID 2240 wrote to memory of 1840	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	R.exe
PID 2240 wrote to memory of 2560	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	N.exe
PID 2240 wrote to memory of 2560	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	N.exe
PID 2240 wrote to memory of 2560	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	N.exe
PID 2240 wrote to memory of 2560	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	N.exe
PID 2240 wrote to memory of 2560	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	N.exe
PID 2240 wrote to memory of 2560	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	N.exe
PID 2240 wrote to memory of 2560	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	N.exe
PID 2560 wrote to memory of 2640	2560	N.exe	cmd.exe
PID 2560 wrote to memory of 2640	2560	N.exe	cmd.exe
PID 2560 wrote to memory of 2640	2560	N.exe	cmd.exe
PID 2560 wrote to memory of 2640	2560	N.exe	cmd.exe
PID 2504 wrote to memory of 2540	2504	TXPlatfor.exe	TXPlatfor.exe
PID 2504 wrote to memory of 2540	2504	TXPlatfor.exe	TXPlatfor.exe
PID 2504 wrote to memory of 2540	2504	TXPlatfor.exe	TXPlatfor.exe
PID 2504 wrote to memory of 2540	2504	TXPlatfor.exe	TXPlatfor.exe
PID 2504 wrote to memory of 2540	2504	TXPlatfor.exe	TXPlatfor.exe
PID 2504 wrote to memory of 2540	2504	TXPlatfor.exe	TXPlatfor.exe
PID 2504 wrote to memory of 2540	2504	TXPlatfor.exe	TXPlatfor.exe
PID 2240 wrote to memory of 2928	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
PID 2240 wrote to memory of 2928	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
PID 2240 wrote to memory of 2928	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
PID 2240 wrote to memory of 2928	2240	fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe	HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
PID 2640 wrote to memory of 2108	2640	cmd.exe	PING.EXE
PID 2640 wrote to memory of 2108	2640	cmd.exe	PING.EXE
PID 2640 wrote to memory of 2108	2640	cmd.exe	PING.EXE
PID 2640 wrote to memory of 2108	2640	cmd.exe	PING.EXE
PID 1664 wrote to memory of 1636	1664	svchost.exe	Remote Data.exe
PID 1664 wrote to memory of 1636	1664	svchost.exe	Remote Data.exe
PID 1664 wrote to memory of 1636	1664	svchost.exe	Remote Data.exe
PID 1664 wrote to memory of 1636	1664	svchost.exe	Remote Data.exe

C:\Users\Admin\AppData\Local\Temp\fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
"C:\Users\Admin\AppData\Local\Temp\fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2240

C:\Users\Admin\AppData\Local\Temp\R.exe
C:\Users\Admin\AppData\Local\Temp\\R.exe
2⤵
- Server Software Component: Terminal Services DLL
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
PID:1840

C:\Users\Admin\AppData\Local\Temp\N.exe
C:\Users\Admin\AppData\Local\Temp\\N.exe
2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2560

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\N.exe > nul
3⤵
- Suspicious use of WriteProcessMemory
PID:2640

C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
4⤵
- Runs ping.exe
PID:2108

C:\Users\Admin\AppData\Local\Temp\HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
C:\Users\Admin\AppData\Local\Temp\HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
PID:2928

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
PID:2664

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\SysWOW64\Remote Data.exe
"C:\Windows\system32\Remote Data.exe" "c:\windows\system32\259394812.txt",MainThread
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1636

C:\Windows\SysWOW64\TXPlatfor.exe
C:\Windows\SysWOW64\TXPlatfor.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2504

C:\Windows\SysWOW64\TXPlatfor.exe
C:\Windows\SysWOW64\TXPlatfor.exe -acsi
2⤵
- Drops file in Drivers directory
- Sets service image path in registry
- Executes dropped EXE
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
PID:2540

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\HD_X.dat
Filesize
2.4MB

MD5
e3049e526e6dec607420a79fc077fd64

SHA1
a1794a765909b48ca570b25db1dc3fe3da2e4edd

SHA256
ee4f3a7956186575f9cba2aa5da61dad0b5d20a30e3b03f9e1972ff47b704632

SHA512
450e7ac0a0909944c08f326a9b1651dc3d1316b7804f844d2c0a42a631f176173ef27a6db9e594f595e3c1cabc81b0bbf9be031cc57fd08e04bc0be90ee4ab86

Download Submit
\Users\Admin\AppData\Local\Temp\HD_fb34095a4f6fc662382827526c7688593a076506091304348aff5fc13b0ebe1c.exe
Filesize
709KB

MD5
837169673ad6244a5dd29e46a3f4988e

SHA1
6f224390cfbf28e6977c362235f940f7ecf0436e

SHA256
d3d31c10e808da399674353370cca8aa3d2db86586e6830f629c0fcb46cfd772

SHA512
7970e18df7e2fdec98593d662579e7ebbef7a0db2f08c9f185452676c372a719256d2a53a99d37489f912a82918a424e4f953a1bab657728540c5c887a674d13

Download Submit
\Users\Admin\AppData\Local\Temp\N.exe
Filesize
377KB

MD5
4a36a48e58829c22381572b2040b6fe0

SHA1
f09d30e44ff7e3f20a5de307720f3ad148c6143b

SHA256
3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

SHA512
5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

Download Submit
\Users\Admin\AppData\Local\Temp\R.exe
Filesize
941KB

MD5
8dc3adf1c490211971c1e2325f1424d2

SHA1
4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

SHA256
bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

SHA512
ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

Download Submit
\Windows\SysWOW64\259394812.txt
Filesize
899KB

MD5
f23c5aa44055e7564320e57c11d4a4ba

SHA1
863b57318e1421d817359ab0844ea7f5779cc26e

SHA256
2f35953a7923cc390cd1b51af11b57f233c4f93f9ea5be5a6f676417baba6944

SHA512
a3dfb44c2116a13b76717eeaf2035490961e4b71be8e81c3f148a0387837d51dc126960306b212a524d77a372e637921d273fb3e0532224c398fc1a5b25b2e6d

Download Submit
\Windows\SysWOW64\Remote Data.exe
Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/2540-44-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2540-50-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2560-20-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2560-21-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2560-18-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download