gh0strat | 831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 06:26

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General

Target
831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe
Size 3.7MB
Sample240526-g7a2eaaf96
SHA256 831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60
MD5 2f1acd1dd640fd670765f273206c0922
SHA1 26bffc39b219d9e6223415c9913fd5ed5832920f
SHA512 54c53953ec8c2b292347e7067c8dd0c08091cb6fa55b56ed13dd18fa249b6a975dddc12da57089e7b3a1f887c9353cc617f195bc8cbea074bed258950b0bfefb
SSDEEP 49152:ZCwsbCANnKXferL7Vwe/Gg0P+WhXi7tjrlkWNE3LOEpFRMwXp0LW:Uws2ANnKXOaeOgmhXSwOEpFRpl
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 8 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/4652-19-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4652-23-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4652-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3148-29-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3148-28-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2708-40-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2708-45-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2708-43-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 9 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023400-5.dat	family_gh0strat
behavioral2/memory/4652-19-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4652-23-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4652-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3148-29-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3148-28-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2708-40-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2708-45-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2708-43-0x0000000010000000-0x00000000101B6000-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

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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Remote Data\Parameters\ServiceDll = "C:\\Windows\\system32\\240595531.txt"	R.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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

Executes dropped EXE 6 IoCs

pid	Process
2988	R.exe
4652	N.exe
3148	TXPlatfor.exe
2708	TXPlatfor.exe
1004	HD_831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe
768	Remote Data.exe

Loads dropped DLL 3 IoCs

pid	Process
2988	R.exe
3736	svchost.exe
768	Remote Data.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4652-17-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4652-19-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4652-23-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4652-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3148-26-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3148-29-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3148-28-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2708-40-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2708-45-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2708-43-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\TXPlatfor.exe	N.exe
File created	C:\Windows\SysWOW64\240595531.txt	R.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	R.exe
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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2032	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe
2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2708	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4652	N.exe
Token: SeLoadDriverPrivilege	2708	TXPlatfor.exe
Token: 33	2708	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2708	TXPlatfor.exe
Token: 33	2708	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2708	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe
2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2988	2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe	85
PID 2744 wrote to memory of 2988	2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe	85
PID 2744 wrote to memory of 2988	2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe	85
PID 2744 wrote to memory of 4652	2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe	88
PID 2744 wrote to memory of 4652	2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe	88
PID 2744 wrote to memory of 4652	2744	831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe	88
PID 4652 wrote to memory of 1008	4652	N.exe	90
PID 4652 wrote to memory of 1008	4652	N.exe	90
PID 4652 wrote to memory of 1008	4652	N.exe	90
PID 3148 wrote to memory of 2708	3148	TXPlatfor.exe	91
PID 3148 wrote to memory of 2708	3148	TXPlatfor.exe	91
PID 3148 wrote to memory of 2708	3148	TXPlatfor.exe	91
PID 1008 wrote to memory of 2032	1008	cmd.exe	94
PID 1008 wrote to memory of 2032	1008	cmd.exe	94
PID 1008 wrote to memory of 2032	1008	cmd.exe	94
PID 3736 wrote to memory of 768	3736	svchost.exe	104
PID 3736 wrote to memory of 768	3736	svchost.exe	104
PID 3736 wrote to memory of 768	3736	svchost.exe	104

C:\Users\Admin\AppData\Local\Temp\831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe
"C:\Users\Admin\AppData\Local\Temp\831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2744
- 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:2988
- 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:4652
- - 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:1008
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 2 127.0.0.1
      4⤵
      Runs ping.exe
      PID:2032
- C:\Users\Admin\AppData\Local\Temp\HD_831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe
  C:\Users\Admin\AppData\Local\Temp\HD_831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe
  2⤵
  - Executes dropped EXE
  PID:1004

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
PID:2788

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:3736
- C:\Windows\SysWOW64\Remote Data.exe
  "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\240595531.txt",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:768

C:\Windows\SysWOW64\TXPlatfor.exe
C:\Windows\SysWOW64\TXPlatfor.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3148
- 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:2708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

HD_831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe

Path C:\Users\Admin\AppData\Local\Temp\HD_831d21d8a97b90b6f0482fd6641df0e6b2d42c01ecfc3b125fd2a49eaf313e60.exe
Size 1.4MB
SHA256 76031a9049224f771ae0fbd8bbb21636a39fc588ef227c42eeb7774f03793509
MD5 1f2690d9d4498b366e38701cfe2d3ee6
SHA1 68c1c63a636a1dbdde6ddff3dcf7fd713bdae953
SHA512 07af9b3f02706bdc386886a0e083692bf0a47c37a3a334ac3884499da16fb715d7581fa8559ab7fb8976ce9e5d2aff3203ce4870af6a9e1cf0c285478e8f389a
SSDEEP 24576:CV72qVSbeRhrlkWNE3RN8uiIF8CVg7QpFRUbwX0wlQJLW:c7tjrlkWNE3LOEpFRMwXp0LW
MD5 SHA1 SHA512 SSDEEP

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HD_X.dat

Path C:\Users\Admin\AppData\Local\Temp\HD_X.dat
Size 2.3MB
SHA256 781c6d1068257e483a8fd115ed79b25aef65882b041b622c98a8283a05c09fea
MD5 f7e023a3f0cf6ae04bcf11a972707fad
SHA1 03592b1e588945bff959ab92786374d320f39059
SHA512 4fcc4865056e479571dd5dc3012acd896a7e292a21c0cbbd27ccae75ac5d2541f875cc7245ac0ebe7ae9063e1b66125c0e3b127a44d7a5ad5d2c2bd122d3585a
SSDEEP 24576:ZCwsbKgbQ5NANIvGTYwMHXA+wT1kfTw4SIuvB74fgt7ibhRM5QhKehFdMtRj7nH3:ZCwsbCANnKXferL7Vwe/Gg0P+WhXQ
MD5 SHA1 SHA512 SSDEEP

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N.exe

Path C:\Users\Admin\AppData\Local\Temp\N.exe
Size 377KB
SHA256 3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8
MD5 4a36a48e58829c22381572b2040b6fe0
SHA1 f09d30e44ff7e3f20a5de307720f3ad148c6143b
SHA512 5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0
SSDEEP 6144:5UGp2l6zRmeVLNHfkQ2TAygOcqAJwQZgb4YtjH6/MuQafORzEOmFfMzi71o+YHL7:HclcceBKlKwAg0Mja/UafOVwbha
MD5 SHA1 SHA512 SSDEEP

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R.exe

Path C:\Users\Admin\AppData\Local\Temp\R.exe
Size 941KB
SHA256 bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c
MD5 8dc3adf1c490211971c1e2325f1424d2
SHA1 4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5
SHA512 ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d
SSDEEP 24576:N+wT1kfTw4SIuvB74fgt7ibhRM5QhKehFdMtRj7nH1PXw:cerL7Vw
MD5 SHA1 SHA512 SSDEEP

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240595531.txt

Path C:\Windows\SysWOW64\240595531.txt
Size 899KB
SHA256 2b492f96af6acff123b6e22b98522ce01b98c4f95d11c46e86288fd04ad9b884
MD5 19853c8878133ee8c9245a02f1e96aaa
SHA1 05dd4d744d8c7a21c2ffedbb4254a68e7220e54f
SHA512 adce430c7907796bad08b6c35669728becb51987125ff52c76ba339c90d7b884f770dc5cb02d31a09f2cb979cd0363adec6c3b46c10d3043bafc3c7f61fcb412
SSDEEP 24576:7V2bG+2gMir4fgt7ibhRM5QhKehFdMtRj7nH1PX9:7wqd87V9
MD5 SHA1 SHA512 SSDEEP

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Remote Data.exe

Path C:\Windows\SysWOW64\Remote Data.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
MD5 SHA1 SHA512 SSDEEP

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memory/2708-43-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/2708-45-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/2708-40-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3148-29-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3148-28-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3148-26-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/4652-20-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/4652-23-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/4652-19-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/4652-17-0x0000000010000000-0x00000000101B6000-memory.dmp

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