gh0strat | fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 04:02

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General

Target

fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe
Size

2.0MB
MD5

2d47c5dfafadd7c7974be14370517fc0
SHA1

a4ca61746045adc930dac56179e589b9696b641f
SHA256

fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382
SHA512

eebaefda6914c2d8b8c1ff8c112c2f217910412e43a801cffb0df11a7d9849a654cbdf13e3b83cd669e2afd75693841da707f088a47089269d2822654dcd90ed
SSDEEP

49152:bM8kreqST3gNH92gVmc//////ZTVJ50BSRc0OlYouOP8GPhLZB:se53gNH92gVmc///////J5pW0Qui8GPt

Score

10^/10

gh0strat purplefox bootkit discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 7 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/3656-31-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/3656-30-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/5104-44-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/5104-43-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/856-50-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/856-53-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/856-55-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 8 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023473-25.dat	family_gh0strat
behavioral2/memory/3656-31-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/3656-30-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/5104-44-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/5104-43-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/856-50-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/856-53-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/856-55-0x0000000010000000-0x00000000101B6000-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	TXPlatforn.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\Ö÷¶¯·ÀÓù·þÎñ\Parameters\ServiceDll = "C:\\Windows\\system32\\240617125.bat"	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"	TXPlatforn.exe

Executes dropped EXE 6 IoCs

pid	Process
4940	OD¼ì²â.exe
4832	r.exe
3656	47.exe
5104	TXPlatforn.exe
856	TXPlatforn.exe
820	Ö÷¶¯·ÀÓù·þÎñ.exe

Loads dropped DLL 3 IoCs

pid	Process
4832	r.exe
904	svchost.exe
820	Ö÷¶¯·ÀÓù·þÎñ.exe

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

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\240617125.bat	r.exe
File created	C:\Windows\SysWOW64\TXPlatforn.exe	47.exe
File opened for modification	C:\Windows\SysWOW64\TXPlatforn.exe	47.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	r.exe
File created	C:\Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñ.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñ.exe	svchost.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3656-31-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3656-30-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/3656-28-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/5104-41-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/5104-44-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/5104-43-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/856-50-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/856-53-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/856-55-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TXPlatforn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	r.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Ö÷¶¯·ÀÓù·þÎñ.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OD¼ì²â.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1624	PING.EXE
888	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1624	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2772	fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe
2772	fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
856	TXPlatforn.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3656	47.exe
Token: SeLoadDriverPrivilege	856	TXPlatforn.exe
Token: 33	856	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	856	TXPlatforn.exe
Token: 33	856	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	856	TXPlatforn.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2772	fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe
2772	fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 4940	2772	fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe	82
PID 2772 wrote to memory of 4940	2772	fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe	82
PID 2772 wrote to memory of 4940	2772	fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe	82
PID 4940 wrote to memory of 5012	4940	OD¼ì²â.exe	83
PID 4940 wrote to memory of 5012	4940	OD¼ì²â.exe	83
PID 4940 wrote to memory of 5012	4940	OD¼ì²â.exe	83
PID 4940 wrote to memory of 2536	4940	OD¼ì²â.exe	84
PID 4940 wrote to memory of 2536	4940	OD¼ì²â.exe	84
PID 4940 wrote to memory of 2536	4940	OD¼ì²â.exe	84
PID 2536 wrote to memory of 4832	2536	cmd.exe	87
PID 2536 wrote to memory of 4832	2536	cmd.exe	87
PID 2536 wrote to memory of 4832	2536	cmd.exe	87
PID 5012 wrote to memory of 3656	5012	cmd.exe	88
PID 5012 wrote to memory of 3656	5012	cmd.exe	88
PID 5012 wrote to memory of 3656	5012	cmd.exe	88
PID 3656 wrote to memory of 888	3656	47.exe	92
PID 3656 wrote to memory of 888	3656	47.exe	92
PID 3656 wrote to memory of 888	3656	47.exe	92
PID 5104 wrote to memory of 856	5104	TXPlatforn.exe	93
PID 5104 wrote to memory of 856	5104	TXPlatforn.exe	93
PID 5104 wrote to memory of 856	5104	TXPlatforn.exe	93
PID 888 wrote to memory of 1624	888	cmd.exe	95
PID 888 wrote to memory of 1624	888	cmd.exe	95
PID 888 wrote to memory of 1624	888	cmd.exe	95
PID 904 wrote to memory of 820	904	svchost.exe	96
PID 904 wrote to memory of 820	904	svchost.exe	96
PID 904 wrote to memory of 820	904	svchost.exe	96

C:\Users\Admin\AppData\Local\Temp\fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe
"C:\Users\Admin\AppData\Local\Temp\fec4bc02d6327dfe396635b87b642cfd5d4fbcfbf951e23b3e2dfd839285b382.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\OD¼ì²â.exe
  C:\Users\Admin\AppData\Local\Temp\\OD¼ì²â.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4940
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\47.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5012
  - - C:\Users\Admin\AppData\Local\Temp\47.exe
      C:\Users\Admin\AppData\Local\Temp\47.exe
      4⤵
      Executes dropped EXE
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3656
    - - 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\47.exe > nul
        5⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Suspicious use of WriteProcessMemory
        
        PID:888
      - C:\Windows\SysWOW64\PING.EXE
        
        ping -n 2 127.0.0.1
        6⤵
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:1624
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\r.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2536
  - - C:\Users\Admin\AppData\Local\Temp\r.exe
      C:\Users\Admin\AppData\Local\Temp\r.exe
      4⤵
      Server Software Component: Terminal Services DLL
      Executes dropped EXE
      Loads dropped DLL
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      PID:4832

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Ö÷¶¯·ÀÓù·þÎñ"
1⤵
PID:4252

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Ö÷¶¯·ÀÓù·þÎñ"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:904
- C:\Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñ.exe
  C:\Windows\system32\Ö÷¶¯·ÀÓù·þÎñ.exe "c:\windows\system32\240617125.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:820

C:\Windows\SysWOW64\TXPlatforn.exe
C:\Windows\SysWOW64\TXPlatforn.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5104
- C:\Windows\SysWOW64\TXPlatforn.exe
  C:\Windows\SysWOW64\TXPlatforn.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:856

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

Pre-OS Boot

T1542

Bootkit

T1542.003

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

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\47.exe

Filesize
377KB

MD5
20b05a93c5de23f1fe6c87f6bc4dabd5

SHA1
8cfc236635ec6b7ce78da31d098bc42cfbe89fa0

SHA256
3aa540780b32d22430706ac275b967c2f93d308f1f57fb794b67f0941fc6fe89

SHA512
4786eeea8d57c5cb1b655c11795af2d75ba7620b493c37d01685574af2749f32589963fb78fadd621ea4d8d3b9616bb31a4e8cd8675dcbb5292c22ad040831ac

Download Submit
C:\Users\Admin\AppData\Local\Temp\OD¼ì²â.exe

Filesize
586KB

MD5
20bbaea0f63e79ddfd42da8cc35763e0

SHA1
bf48a4a1bd8e8b611bbe57a05d5d9e406d7bf9a6

SHA256
fae6449a0d0a6fbc4f1fc2ed341a6c10d81e07d864677116626b04f9ceb83c46

SHA512
532de5f15703de5c22c0593074e69f754f7590ede1529e774caa9cef133d9c228555b24e168645fa0d99ecaa18e78c56e5a17514e8158dcabca8d824a9af876f

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

Filesize
93KB

MD5
4992f3334ad36ff3f61a3b2e3ba7336c

SHA1
61d93ffde435d0d6b1ff0b4fdeef65d79d1f06e8

SHA256
f6b53c8cbef17932ef640bb83b07e56067ffaa582330bb1f68001194a84d1641

SHA512
4772747b159d887ec183c17142dab4bff3595d988a9fa1d28463b82a96f7da0069765cf9e71f1eb33d97c66eb2756103bdd6cc05693f6d76a2ba823ec128d3e0

Download Submit
C:\Windows\SysWOW64\240617125.bat

Filesize
50KB

MD5
c57227c2bb8651639a30bb1967b5b392

SHA1
5ce83f44660f2caecaa20efe106ddbf9a488bc34

SHA256
980a34bdc238d49573da9e766ec68e405619539f3e7212091875d8d8c263914b

SHA512
f4dccffd029a03c55475e03267667cb19b07177e0d25cc9e64e5d021d86e5e8fd8e1b881af83939e97e45715120bf8d190b74f149883ca3345f1d68fef4c27b5

Download Submit
C:\Windows\SysWOW64\Ö÷¶¯·ÀÓù·þÎñ.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
memory/856-55-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/856-53-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/856-50-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2772-14-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download
memory/2772-63-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download
memory/2772-62-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download
memory/2772-13-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download
memory/2772-8-0x00000000030B0000-0x00000000030B1000-memory.dmp

Filesize
4KB

Download
memory/2772-9-0x00000000030B0000-0x00000000030B1000-memory.dmp

Filesize
4KB

Download
memory/2772-12-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download
memory/2772-6-0x0000000000DD0000-0x0000000000DFB000-memory.dmp

Filesize
172KB

Download
memory/2772-65-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download
memory/2772-64-0x0000000005540000-0x0000000005541000-memory.dmp

Filesize
4KB

Download
memory/2772-61-0x00000000030B0000-0x00000000030B1000-memory.dmp

Filesize
4KB

Download
memory/2772-60-0x0000000000DD0000-0x0000000000DFB000-memory.dmp

Filesize
172KB

Download
memory/2772-10-0x00000000030B0000-0x00000000030B1000-memory.dmp

Filesize
4KB

Download
memory/2772-11-0x00000000030B0000-0x00000000030B1000-memory.dmp

Filesize
4KB

Download
memory/2772-7-0x00000000030B0000-0x00000000030B1000-memory.dmp

Filesize
4KB

Download
memory/3656-31-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3656-28-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/3656-30-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4940-17-0x0000000000400000-0x0000000000498000-memory.dmp

Filesize
608KB

Download
memory/5104-43-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/5104-44-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/5104-41-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download