gh0strat | b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b

General

Target

b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
Size

2.9MB
MD5

59af0356bc57f48c901c02373c8286d4
SHA1

be3a4cf6c3c763ae83ff379b092dd66e809439ba
SHA256

b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b
SHA512

49a909c873295b9ebde2e68275d298c76265d579f8ba772d0fb42bdcff32a2611de53b6f77f32cc5f4644c68dd9a45c6cb4f6e9fbe478d40c2e73b8b11497dad
SSDEEP

49152:YCwsbCANnKXferL7Vwe/Gg0P+WhVuoMjEm1:zws2ANnKXOaeOgmhVuo

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 8 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral2/memory/4044-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4044-19-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4044-23-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4900-28-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3292-40-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3292-42-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4900-29-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3292-45-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 9 IoCs

Processes:

resource	yara_rule
C:\Windows\SysWOW64\240597468.txt	family_gh0strat
behavioral2/memory/4044-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4044-19-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4044-23-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4900-28-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3292-40-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3292-42-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4900-29-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3292-45-0x0000000010000000-0x00000000101B6000-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
Drops file in Drivers directory 1 IoCs

Processes:

TXPlatfor.exe

description ioc process

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

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

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

R.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Remote Data\Parameters\ServiceDll = "C:\\Windows\\system32\\240597468.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_b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exeRemote Data.exe

pid	process
4588	R.exe
4044	N.exe
4900	TXPlatfor.exe
3292	TXPlatfor.exe
452	HD_b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
2308	Remote Data.exe

Loads dropped DLL 3 IoCs

Processes:

R.exesvchost.exeRemote Data.exe

pid process

4588 R.exe
3100 svchost.exe
2308 Remote Data.exe

UPX packed file 10 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4044-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4044-19-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4044-17-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4044-23-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4900-26-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4900-28-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3292-40-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3292-42-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4900-29-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3292-45-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

Drops file in System32 directory 6 IoCs

Processes:

svchost.exeN.exeR.exe

description	ioc	process
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\240597468.txt	R.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	R.exe
File created	C:\Windows\SysWOW64\Remote Data.exe	svchost.exe

Drops file in Program Files directory 1 IoCs

Processes:

b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

3128 PING.EXE

pid	process
3128	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe

pid	process
3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

TXPlatfor.exe

pid process

3292 TXPlatfor.exe

pid	process
3292	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

N.exeTXPlatfor.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	4044	N.exe
Token: SeLoadDriverPrivilege	3292	TXPlatfor.exe
Token: 33	3292	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	3292	TXPlatfor.exe
Token: 33	3292	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	3292	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe

pid	process
3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exeTXPlatfor.exeN.execmd.exesvchost.exe

description	pid	process	target process
PID 3172 wrote to memory of 4588	3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe	R.exe
PID 3172 wrote to memory of 4588	3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe	R.exe
PID 3172 wrote to memory of 4588	3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe	R.exe
PID 3172 wrote to memory of 4044	3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe	N.exe
PID 3172 wrote to memory of 4044	3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe	N.exe
PID 3172 wrote to memory of 4044	3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe	N.exe
PID 4900 wrote to memory of 3292	4900	TXPlatfor.exe	TXPlatfor.exe
PID 4900 wrote to memory of 3292	4900	TXPlatfor.exe	TXPlatfor.exe
PID 4900 wrote to memory of 3292	4900	TXPlatfor.exe	TXPlatfor.exe
PID 4044 wrote to memory of 768	4044	N.exe	cmd.exe
PID 4044 wrote to memory of 768	4044	N.exe	cmd.exe
PID 4044 wrote to memory of 768	4044	N.exe	cmd.exe
PID 3172 wrote to memory of 452	3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe	HD_b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
PID 3172 wrote to memory of 452	3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe	HD_b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
PID 3172 wrote to memory of 452	3172	b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe	HD_b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
PID 768 wrote to memory of 3128	768	cmd.exe	PING.EXE
PID 768 wrote to memory of 3128	768	cmd.exe	PING.EXE
PID 768 wrote to memory of 3128	768	cmd.exe	PING.EXE
PID 3100 wrote to memory of 2308	3100	svchost.exe	Remote Data.exe
PID 3100 wrote to memory of 2308	3100	svchost.exe	Remote Data.exe
PID 3100 wrote to memory of 2308	3100	svchost.exe	Remote Data.exe

C:\Users\Admin\AppData\Local\Temp\b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
"C:\Users\Admin\AppData\Local\Temp\b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3172

C:\Users\Admin\AppData\Local\Temp\R.exe
C:\Users\Admin\AppData\Local\Temp\\R.exe
2⤵
- Sets DLL path for service in the registry
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
PID:4588

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:4044

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:768

C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
4⤵
- Runs ping.exe
PID:3128

C:\Users\Admin\AppData\Local\Temp\HD_b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
C:\Users\Admin\AppData\Local\Temp\HD_b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
2⤵
- Executes dropped EXE
PID:452

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
PID:1816

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:3100

C:\Windows\SysWOW64\Remote Data.exe
"C:\Windows\system32\Remote Data.exe" "c:\windows\system32\240597468.txt",MainThread
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2308

C:\Windows\SysWOW64\TXPlatfor.exe
C:\Windows\SysWOW64\TXPlatfor.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4900

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:3292

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\HD_X.dat
Filesize
2.5MB

MD5
bf8ec257e90cbeaf5706520f0664af66

SHA1
020bcf401214e24573003b44f11bb4145afa8032

SHA256
b7fafd8374cd884ab3f92583b58f484eebbb1b78787353cc261596f5a4cd7a7d

SHA512
e09edfab4f0fda54004bd1c8fe7677611269cdd8933b0a4eef230264176a23b0a6068058942c35eb6a005fdb158c5fde44542ead2acd820bc16695be0a737057

Download Submit
C:\Users\Admin\AppData\Local\Temp\HD_b540bccf4371c17ee9843f4f2603d9d3762de061816658784ec31746bf96941b.exe
Filesize
439KB

MD5
6098bdb3693c9583577b2eecf6919c28

SHA1
adb756bc598bc7f448f6cc3de65f51fad2ea8bce

SHA256
9972d1f9c8cca5b6b283b6a99d745daa6129bbafe7efe2360bc986362885174d

SHA512
50dc69b501b4f20894a66e1ef447de8d386d7645a40bc024190870cc7496e359dd03b3d2c574ac318228a2dd13d80ebbcf7448b9a2135929a0c3ca281a7e6c3d

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

MD5
4a36a48e58829c22381572b2040b6fe0

SHA1
f09d30e44ff7e3f20a5de307720f3ad148c6143b

SHA256
3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

SHA512
5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

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

MD5
8dc3adf1c490211971c1e2325f1424d2

SHA1
4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

SHA256
bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

SHA512
ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

Download Submit
C:\Windows\SysWOW64\240597468.txt
Filesize
899KB

MD5
2a46129053db1d722ed088d0427edb95

SHA1
c6dd79432156b8bb94aeac327d6598647eca6a7f

SHA256
4d46304b566fec283e272d831249071cc82627de1ad92eb6bce551f6448a6181

SHA512
4c435069323e6ff34e852f9b1962bff0c7575086ced90466c69c6feeb3b0aff662998eccf9a1af58360c59ace692d565a02f57e2b2746832ec44e2b084f656c0

Download Submit
C:\Windows\SysWOW64\Remote Data.exe
Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
memory/3292-45-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3292-42-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3292-40-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4044-20-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4044-23-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4044-17-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4044-19-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4900-28-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4900-29-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4900-26-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads