gh0strat | 81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
03/12/2024, 15:54

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General

Target

81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe
Size

4.5MB
MD5

506499c3920b5a37fb0278e902bbf166
SHA1

1ee4f1a5ce27ba60c8817d00160c2a64435c2887
SHA256

81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2
SHA512

b65a6802d3b6453a403829e346b451629a87580d1faf99d8699fdc593857834893a1ccf5434de800e7ffb10307a5e9aa3e6cb33a7446a8bc8f553bf259010174
SSDEEP

49152:kCwsbCANnKXferL7Vwe/Gg0P+WhvgWWHB5+0vY3u6c20LAonnOeJ9EWWf:nws2ANnKXOaeOgmh1WHBk0vjAoOe9Wf

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 5 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2356-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2356-21-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2756-43-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2756-52-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2756-53-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 6 IoCs

resource	yara_rule
behavioral1/files/0x0008000000015fe0-6.dat	family_gh0strat
behavioral1/memory/2356-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2356-21-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2756-43-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2756-52-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2756-53-0x0000000010000000-0x00000000101B6000-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
Gh0strat family
gh0strat
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Purplefox family
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\\259437603.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
2388	R.exe
2356	N.exe
2780	TXPlatfor.exe
2756	TXPlatfor.exe
2832	HD_81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe
2440	Remote Data.exe

Loads dropped DLL 8 IoCs

pid	Process
1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe
2388	R.exe
1412	svchost.exe
1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe
2780	TXPlatfor.exe
1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe
1412	svchost.exe
2440	Remote Data.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
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
File opened for modification	C:\Windows\SysWOW64\TXPlatfor.exe	N.exe
File created	C:\Windows\SysWOW64\259437603.txt	R.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2356-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2356-21-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2356-18-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2756-43-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2756-52-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2756-53-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	R.exe
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	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.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
1552	cmd.exe
2860	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2860	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2756	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2356	N.exe
Token: SeLoadDriverPrivilege	2756	TXPlatfor.exe
Token: 33	2756	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2756	TXPlatfor.exe
Token: 33	2756	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2756	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe
1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 2388	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	30
PID 1700 wrote to memory of 2388	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	30
PID 1700 wrote to memory of 2388	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	30
PID 1700 wrote to memory of 2388	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	30
PID 1700 wrote to memory of 2356	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	33
PID 1700 wrote to memory of 2356	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	33
PID 1700 wrote to memory of 2356	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	33
PID 1700 wrote to memory of 2356	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	33
PID 1700 wrote to memory of 2356	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	33
PID 1700 wrote to memory of 2356	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	33
PID 1700 wrote to memory of 2356	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	33
PID 2356 wrote to memory of 1552	2356	N.exe	35
PID 2356 wrote to memory of 1552	2356	N.exe	35
PID 2356 wrote to memory of 1552	2356	N.exe	35
PID 2356 wrote to memory of 1552	2356	N.exe	35
PID 2780 wrote to memory of 2756	2780	TXPlatfor.exe	37
PID 2780 wrote to memory of 2756	2780	TXPlatfor.exe	37
PID 2780 wrote to memory of 2756	2780	TXPlatfor.exe	37
PID 2780 wrote to memory of 2756	2780	TXPlatfor.exe	37
PID 2780 wrote to memory of 2756	2780	TXPlatfor.exe	37
PID 2780 wrote to memory of 2756	2780	TXPlatfor.exe	37
PID 2780 wrote to memory of 2756	2780	TXPlatfor.exe	37
PID 1700 wrote to memory of 2832	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	38
PID 1700 wrote to memory of 2832	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	38
PID 1700 wrote to memory of 2832	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	38
PID 1700 wrote to memory of 2832	1700	81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe	38
PID 1552 wrote to memory of 2860	1552	cmd.exe	39
PID 1552 wrote to memory of 2860	1552	cmd.exe	39
PID 1552 wrote to memory of 2860	1552	cmd.exe	39
PID 1552 wrote to memory of 2860	1552	cmd.exe	39
PID 1412 wrote to memory of 2440	1412	svchost.exe	41
PID 1412 wrote to memory of 2440	1412	svchost.exe	41
PID 1412 wrote to memory of 2440	1412	svchost.exe	41
PID 1412 wrote to memory of 2440	1412	svchost.exe	41

C:\Users\Admin\AppData\Local\Temp\81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe
"C:\Users\Admin\AppData\Local\Temp\81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1700
- 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:2388
- 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:2356
- - 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:1552
  - - 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:2860
- C:\Users\Admin\AppData\Local\Temp\HD_81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe
  C:\Users\Admin\AppData\Local\Temp\HD_81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe
  2⤵
  - Executes dropped EXE
  PID:2832

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
PID:1712

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:1412
- C:\Windows\SysWOW64\Remote Data.exe
  "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\259437603.txt",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2440

C:\Windows\SysWOW64\TXPlatfor.exe
C:\Windows\SysWOW64\TXPlatfor.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2780
- 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:2756

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 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\N.exe

Filesize
377KB

MD5
4a36a48e58829c22381572b2040b6fe0

SHA1
f09d30e44ff7e3f20a5de307720f3ad148c6143b

SHA256
3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

SHA512
5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

Download Submit
C:\Users\Admin\Desktop\BlockFind.exe

Filesize
3.3MB

MD5
26e7a3f0a10e7e81b01c413749e3475e

SHA1
08d05a436fd4aaa6074af829e5691bbd5d0d6804

SHA256
10ab4e2dd353937702432c8e2d30eecbe3592924e3a1763d9f984824510c8152

SHA512
341a3f81680f9dd78926d2fa6907c4d83fccd5af5b691765d5a54d53f20e3e29104fea9712d6e33114387692c2f7282522b2391f028fac8ec50d6e3dbff94dbb

Download Submit
\Users\Admin\AppData\Local\Temp\HD_81be4c5326479e09cc3f1ee0c29128c45bf197d24f2ca17931e36ccc32b955a2.exe

Filesize
2.1MB

MD5
1aa03156eb9d1a0dc99c857561cbab75

SHA1
43efbf608fa22ac1942ec7bb2b55b9eda8bd7e46

SHA256
df9e8bd64b9902bd59ccbbb2340a2e839a715e6275a012054b8e1fe26c5a33f9

SHA512
81f1c8c7bb289a2232a317e5834a5c194a48dd7406881d2dc40180f73ca8078a3fee6e0f17c4ed15c602e01ce1ad7007d00925e5dbe11585e4c4f43420adc884

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

Filesize
941KB

MD5
8dc3adf1c490211971c1e2325f1424d2

SHA1
4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

SHA256
bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

SHA512
ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

Download Submit
\Windows\SysWOW64\259437603.txt

Filesize
899KB

MD5
3050889692f79fedf835d42f47e9a2af

SHA1
ca161e630b068de2fa433c2f27e3e54e1664d616

SHA256
f8940f7423426d714c95595c6ea35e4068e317660f973318a4ab2fcd0cdb856b

SHA512
f7a6a711657c2a8acca5bdafb63e132f7794138d34fd306f4b3600ab8e1f653905df6c57d493fce12ee40586e073d76de91b46a505dc07adc8686cf4e3785047

Download Submit
\Windows\SysWOW64\Remote Data.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/1700-41-0x0000000003350000-0x0000000003623000-memory.dmp

Filesize
2.8MB

Download
memory/1700-60-0x0000000003350000-0x0000000003623000-memory.dmp

Filesize
2.8MB

Download
memory/2356-20-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2356-21-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2356-18-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2756-53-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2756-52-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2756-43-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2832-44-0x000000013FD60000-0x0000000140033000-memory.dmp

Filesize
2.8MB

Download
memory/2832-48-0x000000013FD60000-0x0000000140033000-memory.dmp

Filesize
2.8MB

Download