gh0strat | b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1

General

Target

b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
Size

2.8MB
MD5

65a1b857deefd387b9ad6060a3012e13
SHA1

91631b9b04c3d091503d55f5ff3032ae122f9e5c
SHA256

b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1
SHA512

95f6af13491da2d63799095535d3013d72093697d14f9fcec355843095241bdd5fb6a2242620020bf53432deecc22a1fc5aa58d8223bcc5cbf7e5c4d6fe26dcc
SSDEEP

49152:dCwsbCANnKXferL7Vwe/Gg0P+WhjlTjm21t:gws2ANnKXOaeOgmhjlt

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
behavioral1/memory/3020-16-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/3020-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/3020-15-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/1276-26-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/1276-36-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2640-39-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2640-47-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2640-45-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 9 IoCs

Processes:

resource	yara_rule
\Windows\SysWOW64\259395420.txt	family_gh0strat
behavioral1/memory/3020-16-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/3020-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/3020-15-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/1276-26-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/1276-36-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2640-39-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2640-47-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2640-45-0x0000000010000000-0x00000000101B6000-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 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 5 IoCs

Processes:

R.exeN.exeTXPlatfor.exeTXPlatfor.exeHD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe

pid process

500 R.exe
3020 N.exe
1276 TXPlatfor.exe
2640 TXPlatfor.exe
1060 HD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe

pid	process
500	R.exe
3020	N.exe
1276	TXPlatfor.exe
2640	TXPlatfor.exe
1060	HD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe

Loads dropped DLL 5 IoCs

Processes:

b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exeR.exeTXPlatfor.exe

pid	process
2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
500	R.exe
2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
1276	TXPlatfor.exe
2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe

UPX packed file 9 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/3020-16-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/3020-13-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/3020-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/3020-15-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/1276-26-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/1276-36-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2640-39-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2640-47-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2640-45-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

Processes:

R.exeN.exe

description	ioc	process
File created	C:\Windows\SysWOW64\259395420.txt	R.exe
File created	C:\Windows\SysWOW64\TXPlatfor.exe	N.exe
File opened for modification	C:\Windows\SysWOW64\TXPlatfor.exe	N.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2612 PING.EXE
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe

pid process

2372 b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
Suspicious behavior: LoadsDriver 1 IoCs

Processes:

TXPlatfor.exe

pid process

2640 TXPlatfor.exe

pid	process
2612	PING.EXE

pid	process
2640	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

N.exeTXPlatfor.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	3020	N.exe
Token: SeLoadDriverPrivilege	2640	TXPlatfor.exe
Token: 33	2640	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2640	TXPlatfor.exe
Token: 33	2640	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2640	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe

pid	process
2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exeN.exeTXPlatfor.execmd.exe

description	pid	process	target process
PID 2372 wrote to memory of 500	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	R.exe
PID 2372 wrote to memory of 500	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	R.exe
PID 2372 wrote to memory of 500	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	R.exe
PID 2372 wrote to memory of 500	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	R.exe
PID 2372 wrote to memory of 3020	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	N.exe
PID 2372 wrote to memory of 3020	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	N.exe
PID 2372 wrote to memory of 3020	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	N.exe
PID 2372 wrote to memory of 3020	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	N.exe
PID 2372 wrote to memory of 3020	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	N.exe
PID 2372 wrote to memory of 3020	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	N.exe
PID 2372 wrote to memory of 3020	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	N.exe
PID 3020 wrote to memory of 2664	3020	N.exe	cmd.exe
PID 3020 wrote to memory of 2664	3020	N.exe	cmd.exe
PID 3020 wrote to memory of 2664	3020	N.exe	cmd.exe
PID 3020 wrote to memory of 2664	3020	N.exe	cmd.exe
PID 1276 wrote to memory of 2640	1276	TXPlatfor.exe	TXPlatfor.exe
PID 1276 wrote to memory of 2640	1276	TXPlatfor.exe	TXPlatfor.exe
PID 1276 wrote to memory of 2640	1276	TXPlatfor.exe	TXPlatfor.exe
PID 1276 wrote to memory of 2640	1276	TXPlatfor.exe	TXPlatfor.exe
PID 1276 wrote to memory of 2640	1276	TXPlatfor.exe	TXPlatfor.exe
PID 1276 wrote to memory of 2640	1276	TXPlatfor.exe	TXPlatfor.exe
PID 1276 wrote to memory of 2640	1276	TXPlatfor.exe	TXPlatfor.exe
PID 2372 wrote to memory of 1060	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	HD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
PID 2372 wrote to memory of 1060	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	HD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
PID 2372 wrote to memory of 1060	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	HD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
PID 2372 wrote to memory of 1060	2372	b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe	HD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
PID 2664 wrote to memory of 2612	2664	cmd.exe	PING.EXE
PID 2664 wrote to memory of 2612	2664	cmd.exe	PING.EXE
PID 2664 wrote to memory of 2612	2664	cmd.exe	PING.EXE
PID 2664 wrote to memory of 2612	2664	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
"C:\Users\Admin\AppData\Local\Temp\b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2372

C:\Users\Admin\AppData\Local\Temp\R.exe
C:\Users\Admin\AppData\Local\Temp\\R.exe
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
PID:500

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:3020

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:2664

C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
4⤵
- Runs ping.exe
PID:2612

C:\Users\Admin\AppData\Local\Temp\HD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
C:\Users\Admin\AppData\Local\Temp\HD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe
2⤵
- Executes dropped EXE
PID:1060

C:\Windows\SysWOW64\TXPlatfor.exe
C:\Windows\SysWOW64\TXPlatfor.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1276

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:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2.4MB

MD5
66435a7fcef61ed4340f1486812ff234

SHA1
6e59c10d3946d411c06b411be76f36f114272a75

SHA256
0477cfacf49db06fe954f833fe05c4a2c5952c456c666f02719acabb055510dc

SHA512
f86c0c6236b691c8c6d43fabf1f7aa1fa8e6473ccf155f4bc84aacff6af159d62a9069e2ad70e6bdb6ad9f4e220ef3786e517f9744cb13eb9cb8f2b4e75fbf2a

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

Filesize
377KB

MD5
4a36a48e58829c22381572b2040b6fe0

SHA1
f09d30e44ff7e3f20a5de307720f3ad148c6143b

SHA256
3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

SHA512
5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

Download Submit
\Users\Admin\AppData\Local\Temp\HD_b7b673ddf46adbc5c9c7bd90073b5c67955ea012409ce0c648f4e2cdfecfaef1.exe

Filesize
441KB

MD5
3893aeb4428ba5c5aa57471add1a03b0

SHA1
d0b0f401366293a7b01e897f027fabbcd49d299f

SHA256
f18fcddf3a06cc817a94a5dd61d8f1ac7d2bbe1e04e42f6fd803d3b944e8757e

SHA512
81ad48194131863dd8740ab28795450fc00fb346e8048fb95326588394dd26eec5cf39601fef78b2e48ac2cbf38d60fbb110af96dbfa4ad0424fc0f1dd06a599

Download Submit
\Users\Admin\AppData\Local\Temp\R.exe

Filesize
941KB

MD5
8dc3adf1c490211971c1e2325f1424d2

SHA1
4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

SHA256
bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

SHA512
ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

Download Submit
\Windows\SysWOW64\259395420.txt

Filesize
899KB

MD5
6bdbf739ce91ba34e5c2cb2d0bbe9346

SHA1
9dc4b58f5f1e63450b695687c2c1376ae439fd70

SHA256
94b19cccbd05a0cc64ad97a70d17e0f386ab0cb2045c25e167535bb259869035

SHA512
c52956725b5f82569516029613fedced255a4d9000e4cbcb8b6440d5ee50e501075548b52eb35e3a9b0c5e6b700d7587b7185866cf1618ea1825b978da49476b

Download Submit
memory/1276-26-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/1276-36-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2640-39-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2640-45-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2640-47-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3020-16-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3020-15-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3020-20-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3020-13-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads