gh0strat | 3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863

General

Target

3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe
Size

2.4MB
MD5

c9f506ff598e1cabe30e4d31b9f6323b
SHA1

503c6b7994e5f91a70a1fac6d172b10cb1f07e15
SHA256

3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863
SHA512

8a9237bbf8190427c12f18f1eb1403c56fc6940249b905805f619ca177173cd3f6b4b97d8702a8a4aebd1efa1793f4addb392133ebd64f846953a3f58c992dcd
SSDEEP

24576:xCwsbKgbQ5NANIvGTYwMHXA+wT1kfTw4SIuvB74fgt7ibhRM5QhKehFdMtRj7nH/:xCwsbCANnKXferL7Vwe/Gg0P+Wh3/3c

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 8 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral2/memory/2448-19-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2448-23-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2448-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2936-28-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2936-29-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1940-46-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1940-51-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1940-52-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 9 IoCs

Processes:

resource	yara_rule
behavioral2/files/0x0008000000023cd1-5.dat	family_gh0strat
behavioral2/memory/2448-19-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2448-23-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2448-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2936-28-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/2936-29-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1940-46-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1940-51-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/1940-52-0x0000000010000000-0x00000000101B6000-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

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

Processes:

R.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Remote Data\Parameters\ServiceDll = "C:\\Windows\\system32\\240634718.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 5 IoCs

Processes:

R.exeN.exeTXPlatfor.exeTXPlatfor.exeRemote Data.exe

pid	Process
4220	R.exe
2448	N.exe
2936	TXPlatfor.exe
1940	TXPlatfor.exe
4712	Remote Data.exe

Loads dropped DLL 3 IoCs

Processes:

R.exesvchost.exeRemote Data.exe

pid	Process
4220	R.exe
3256	svchost.exe
4712	Remote Data.exe

Drops file in System32 directory 6 IoCs

Processes:

svchost.exeN.exeR.exe

description	ioc	Process
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
File opened for modification	C:\Windows\SysWOW64\TXPlatfor.exe	N.exe
File created	C:\Windows\SysWOW64\240634718.txt	R.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	R.exe

UPX packed file 10 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2448-19-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2448-18-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2448-23-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2448-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2936-26-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2936-28-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/2936-29-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1940-46-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1940-51-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/1940-52-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

Processes:

3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 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

Processes:

svchost.exeN.exeTXPlatfor.execmd.exePING.EXERemote Data.exe3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exeR.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TXPlatfor.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Remote Data.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	R.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

Processes:

cmd.exePING.EXE

pid	Process
4768	cmd.exe
3928	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
3928	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

TXPlatfor.exe

pid	Process
1940	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

N.exeTXPlatfor.exe

description	pid	Process
Token: SeIncBasePriorityPrivilege	2448	N.exe
Token: SeLoadDriverPrivilege	1940	TXPlatfor.exe
Token: 33	1940	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	1940	TXPlatfor.exe
Token: 33	1940	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	1940	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe

pid	Process
2564	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe
2564	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exeN.exeTXPlatfor.execmd.exesvchost.exe

description	pid	Process	procid_target
PID 2564 wrote to memory of 4220	2564	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe	84
PID 2564 wrote to memory of 4220	2564	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe	84
PID 2564 wrote to memory of 4220	2564	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe	84
PID 2564 wrote to memory of 2448	2564	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe	88
PID 2564 wrote to memory of 2448	2564	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe	88
PID 2564 wrote to memory of 2448	2564	3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe	88
PID 2448 wrote to memory of 4768	2448	N.exe	91
PID 2448 wrote to memory of 4768	2448	N.exe	91
PID 2448 wrote to memory of 4768	2448	N.exe	91
PID 2936 wrote to memory of 1940	2936	TXPlatfor.exe	92
PID 2936 wrote to memory of 1940	2936	TXPlatfor.exe	92
PID 2936 wrote to memory of 1940	2936	TXPlatfor.exe	92
PID 4768 wrote to memory of 3928	4768	cmd.exe	94
PID 4768 wrote to memory of 3928	4768	cmd.exe	94
PID 4768 wrote to memory of 3928	4768	cmd.exe	94
PID 3256 wrote to memory of 4712	3256	svchost.exe	95
PID 3256 wrote to memory of 4712	3256	svchost.exe	95
PID 3256 wrote to memory of 4712	3256	svchost.exe	95

C:\Users\Admin\AppData\Local\Temp\3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe
"C:\Users\Admin\AppData\Local\Temp\3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2564
- 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
  - System Location Discovery: System Language Discovery
  PID:4220
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2448
- - 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⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:4768
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 2 127.0.0.1
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:3928

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
PID:3852

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3256
- C:\Windows\SysWOW64\Remote Data.exe
  "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\240634718.txt",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4712

C:\Windows\SysWOW64\TXPlatfor.exe
C:\Windows\SysWOW64\TXPlatfor.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- 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:1940

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

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

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
c9f506ff598e1cabe30e4d31b9f6323b

SHA1
503c6b7994e5f91a70a1fac6d172b10cb1f07e15

SHA256
3a4cf3f8b89de0d5e163e062ffed8395ae5e531235d3aff60b057589136e1863

SHA512
8a9237bbf8190427c12f18f1eb1403c56fc6940249b905805f619ca177173cd3f6b4b97d8702a8a4aebd1efa1793f4addb392133ebd64f846953a3f58c992dcd

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\240634718.txt

Filesize
899KB

MD5
4ba9a3880f58384c96864c9ce804ecde

SHA1
969edba5367fe44f2eb88e831018990e1c411cdd

SHA256
077a1dc60e446e91e7f39f71945d2c5e27d30413b8cf299a3e978ecabd07d82b

SHA512
ab6f8f834005e076a278bc8d66d2fc7b6fa15f001fbd8c82dda420e1ac5c92d66ef67525be1a4d0fc2f77a1cc045b14fc2aa7774dfa59fd5974fd273ba711c89

Download Submit
C:\Windows\SysWOW64\Remote Data.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
memory/1940-52-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/1940-51-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/1940-46-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2448-20-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2448-23-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2448-18-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2448-19-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2936-29-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2936-28-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2936-26-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads