gh0strat | b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6

Analysis

max time kernel
150s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
25/06/2024, 09:09

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General

Target
b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe
Size 3.7MB
Sample240625-k4h5dstepj
SHA256 b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6
MD5 e9d8433853d697f4bb6f48fd61f8a82b
SHA1 c4db47b81f25444f7176d3c22e234e9e8e2485cc
SHA512 1dbb874f1edc701cd3d0366afabc142f005fef4f61c0c4ec42c9fde68f142b3e7d1c7c7961fc1f005a872b8f8c6c987c16c300d1d1593e6348cec1d821c82542
SSDEEP 49152:9CwsbCANnKXferL7Vwe/Gg0P+WhfpdyZ1+217pdyZ1:Aws2ANnKXOaeOgmhfpYz+217pYz
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/3184-19-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3184-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3184-23-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2888-29-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2888-28-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/924-51-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/924-53-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/924-56-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 9 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023517-5.dat	family_gh0strat
behavioral2/memory/3184-19-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3184-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3184-23-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2888-29-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2888-28-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/924-51-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/924-53-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/924-56-0x0000000010000000-0x00000000101B6000-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

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Remote Data\Parameters\ServiceDll = "C:\\Windows\\system32\\240597109.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
1888	R.exe
3184	N.exe
2888	TXPlatfor.exe
4052	HD_b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe
924	TXPlatfor.exe
1740	Remote Data.exe

Loads dropped DLL 3 IoCs

pid	Process
1888	R.exe
1384	svchost.exe
1740	Remote Data.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3184-17-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3184-19-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3184-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3184-23-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2888-26-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2888-29-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2888-28-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/924-51-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/924-53-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/924-56-0x0000000010000000-0x00000000101B6000-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\240597109.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

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.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

pid	Process
1100	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe
1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
924	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3184	N.exe
Token: SeLoadDriverPrivilege	924	TXPlatfor.exe
Token: 33	924	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	924	TXPlatfor.exe
Token: 33	924	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	924	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe
1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 1888	1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe	82
PID 1896 wrote to memory of 1888	1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe	82
PID 1896 wrote to memory of 1888	1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe	82
PID 1896 wrote to memory of 3184	1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe	86
PID 1896 wrote to memory of 3184	1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe	86
PID 1896 wrote to memory of 3184	1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe	86
PID 3184 wrote to memory of 2900	3184	N.exe	89
PID 3184 wrote to memory of 2900	3184	N.exe	89
PID 3184 wrote to memory of 2900	3184	N.exe	89
PID 1896 wrote to memory of 4052	1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe	90
PID 1896 wrote to memory of 4052	1896	b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe	90
PID 2888 wrote to memory of 924	2888	TXPlatfor.exe	91
PID 2888 wrote to memory of 924	2888	TXPlatfor.exe	91
PID 2888 wrote to memory of 924	2888	TXPlatfor.exe	91
PID 2900 wrote to memory of 1100	2900	cmd.exe	94
PID 2900 wrote to memory of 1100	2900	cmd.exe	94
PID 2900 wrote to memory of 1100	2900	cmd.exe	94
PID 1384 wrote to memory of 1740	1384	svchost.exe	99
PID 1384 wrote to memory of 1740	1384	svchost.exe	99
PID 1384 wrote to memory of 1740	1384	svchost.exe	99

C:\Users\Admin\AppData\Local\Temp\b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe
"C:\Users\Admin\AppData\Local\Temp\b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1896
- 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:1888
- 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:3184
- - 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:2900
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 2 127.0.0.1
      4⤵
      Runs ping.exe
      PID:1100
- C:\Users\Admin\AppData\Local\Temp\HD_b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe
  C:\Users\Admin\AppData\Local\Temp\HD_b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe
  2⤵
  - Executes dropped EXE
  PID:4052

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
PID:1028

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:1384
- C:\Windows\SysWOW64\Remote Data.exe
  "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\240597109.txt",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1740

C:\Windows\SysWOW64\TXPlatfor.exe
C:\Windows\SysWOW64\TXPlatfor.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2888
- 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:924

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

Server Software Component

T1505

Terminal Services DLL

T1505.005

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

HD_X.dat

Path C:\Users\Admin\AppData\Local\Temp\HD_X.dat
Size 3.1MB
SHA256 16c96801bb46b0da64ac4675de8bc27a7f7979942b5fcba597960eb01aea77b2
MD5 f4ddd80c310c106fb73f1f71433c6ef6
SHA1 ab0755310a80f1800af10bc5b9d600760eec9a78
SHA512 4822c6726b1756c918956c15598f22ee5138f6b81fab9ba7cbcf42eb4352c9188b345b4bc40cdb58ea6cc645cdc43f48115879c4337f5a827ce9f1a0ab5439b6
SSDEEP 49152:9CwsbCANnKXferL7Vwe/Gg0P+WhfpdyZ1+2M:Aws2ANnKXOaeOgmhfpYz+2M
MD5 SHA1 SHA512 SSDEEP

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HD_b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe

Path C:\Users\Admin\AppData\Local\Temp\HD_b57f67a2d20bd296d04b89d19f5c4bb5b32071c2d4e266c4d290e9b0c8538aa6.exe
Size 638KB
SHA256 1d864dfbaa226f7501b87ba5132f68f1089cbfeb9b0abc2676843c41e754886f
MD5 114c8c08ab1263109fb8eda6bdfa0cb8
SHA1 76791f3bdfc1bb74bbea02eddc79d9e40a3d2cf0
SHA512 1ca48786d8cedfb0beb06f6a14dc60b8667d76797211993f8591f8d269da1ad4bc634464b2a41b7f41b0a6fbae6c2f2c9ee85ab90c4934c7a13493e6e2db4cc5
SSDEEP 12288:44eCi3BqDvVhY69H4Whwe4ispvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvCFly3x8:n7pH9ye4iOB8
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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240597109.txt

Path C:\Windows\SysWOW64\240597109.txt
Size 899KB
SHA256 ff19939e7943086efe5109a39e42f9b33772baab33820d474688d37c0f595de2
MD5 b058a3bc03ea65b714e3a3e985284e8e
SHA1 7c705031a5d4fd05ab3266377d5e3eb7c39b4638
SHA512 0c51dc7eb83b7f7fa2fe29d21315d08ef4e2a2b803e4e470ecf595251d1b8be64f27711f0a4894c41e1d19e3e43541d132d97558e205ba8d9866039cf9d77770
SSDEEP 24576:7V2bG+2gMir4fgt7ibhRM5QhKehFdMtRj7nH1PXD:7wqd87VD
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/924-56-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/924-53-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/924-51-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/2888-29-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/2888-28-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/2888-26-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3184-23-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3184-20-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3184-19-0x0000000010000000-0x00000000101B6000-memory.dmp

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memory/3184-17-0x0000000010000000-0x00000000101B6000-memory.dmp

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