gh0strat | b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-12-2024 23:44

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General

Target

b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
Size

2.9MB
MD5

5d1d06e1409923826904057c78b16898
SHA1

76299d4c408e8a559d1f45ad3e069b20edf3bc11
SHA256

b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f
SHA512

633c29a85483e7199eac47b615d1657b45520443b85fd8a8821290ac382f244833f8be9070fd07d66cabfc2b00b0c6f9a3cacff725acb33f4660c46298891470
SSDEEP

49152:OCwsbCANnKXferL7Vwe/Gg0P+WhIsABTuLEfF:pws2ANnKXOaeOgmhI1BTuLEfF

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/2140-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2140-21-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2856-44-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2856-49-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2856-51-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 6 IoCs

resource	yara_rule
behavioral1/files/0x00070000000192f0-6.dat	family_gh0strat
behavioral1/memory/2140-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2140-21-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2856-44-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2856-49-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2856-51-0x0000000010000000-0x00000000101B6000-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\\259432392.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 7 IoCs

pid	Process
1036	R.exe
2140	N.exe
2220	TXPlatfor.exe
2856	TXPlatfor.exe
2844	HD_b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
1192	Process not Found
2296	Remote Data.exe

Loads dropped DLL 10 IoCs

pid	Process
2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
1036	R.exe
2128	svchost.exe
2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
2220	TXPlatfor.exe
2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
2964	Process not Found
1192	Process not Found
2128	svchost.exe
2296	Remote Data.exe

Drops file in System32 directory 6 IoCs

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\259432392.txt	R.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	R.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2140-18-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2140-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2140-21-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2856-44-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2856-49-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2856-51-0x0000000010000000-0x00000000101B6000-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	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	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	R.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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
2852	cmd.exe
2600	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2600	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2856	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2140	N.exe
Token: SeLoadDriverPrivilege	2856	TXPlatfor.exe
Token: 33	2856	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2856	TXPlatfor.exe
Token: 33	2856	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2856	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 1036	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	30
PID 2504 wrote to memory of 1036	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	30
PID 2504 wrote to memory of 1036	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	30
PID 2504 wrote to memory of 1036	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	30
PID 2504 wrote to memory of 2140	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	33
PID 2504 wrote to memory of 2140	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	33
PID 2504 wrote to memory of 2140	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	33
PID 2504 wrote to memory of 2140	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	33
PID 2504 wrote to memory of 2140	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	33
PID 2504 wrote to memory of 2140	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	33
PID 2504 wrote to memory of 2140	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	33
PID 2140 wrote to memory of 2852	2140	N.exe	35
PID 2140 wrote to memory of 2852	2140	N.exe	35
PID 2140 wrote to memory of 2852	2140	N.exe	35
PID 2140 wrote to memory of 2852	2140	N.exe	35
PID 2220 wrote to memory of 2856	2220	TXPlatfor.exe	36
PID 2220 wrote to memory of 2856	2220	TXPlatfor.exe	36
PID 2220 wrote to memory of 2856	2220	TXPlatfor.exe	36
PID 2220 wrote to memory of 2856	2220	TXPlatfor.exe	36
PID 2220 wrote to memory of 2856	2220	TXPlatfor.exe	36
PID 2220 wrote to memory of 2856	2220	TXPlatfor.exe	36
PID 2220 wrote to memory of 2856	2220	TXPlatfor.exe	36
PID 2504 wrote to memory of 2844	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	38
PID 2504 wrote to memory of 2844	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	38
PID 2504 wrote to memory of 2844	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	38
PID 2504 wrote to memory of 2844	2504	b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe	38
PID 2852 wrote to memory of 2600	2852	cmd.exe	40
PID 2852 wrote to memory of 2600	2852	cmd.exe	40
PID 2852 wrote to memory of 2600	2852	cmd.exe	40
PID 2852 wrote to memory of 2600	2852	cmd.exe	40
PID 2128 wrote to memory of 2296	2128	svchost.exe	41
PID 2128 wrote to memory of 2296	2128	svchost.exe	41
PID 2128 wrote to memory of 2296	2128	svchost.exe	41
PID 2128 wrote to memory of 2296	2128	svchost.exe	41

C:\Users\Admin\AppData\Local\Temp\b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
"C:\Users\Admin\AppData\Local\Temp\b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2504
- 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:1036
- 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:2140
- - 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:2852
  - - 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:2600
- C:\Users\Admin\AppData\Local\Temp\HD_b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
  C:\Users\Admin\AppData\Local\Temp\HD_b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe
  2⤵
  - Executes dropped EXE
  PID:2844

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
PID:2116

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:2128
- C:\Windows\SysWOW64\Remote Data.exe
  "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\259432392.txt",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2296

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:2220
- 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:2856

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\HD_X.dat

Filesize
2.6MB

MD5
97958c76750221e2953392782e393c54

SHA1
125961f3d7ba5404792478b929e331a3188c0e42

SHA256
93bba883b08d311455ffdcd4c2a8f70a5e5eb4294a158c840ef6757b10259f6b

SHA512
2d5cfb8751911c4d3980cf2059e87c37ef3d9cf02736d8494f8983a05677abbcc750613b2d609540e0c317b94359b74b8347491a9417b36a3ad5b2d03d6363e2

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

Filesize
377KB

MD5
4a36a48e58829c22381572b2040b6fe0

SHA1
f09d30e44ff7e3f20a5de307720f3ad148c6143b

SHA256
3de6c02f52a661b8f934f59541d0cf297bb489eb2155e346b63c7338e09aeaf8

SHA512
5d0ea398792f6b9eb3f188813c50b7f43929183b5733d2b595b2fd1c78722764fd15f62db1086b5c7edfb157661a6dcd544ddd80907ee7699dddbca1ef4022d0

Download Submit
\Users\Admin\AppData\Local\Temp\HD_b1673641b8add78f790c75969ccf71aeb2616baa03c5988b8e5724afda0f123f.exe

Filesize
340KB

MD5
eaafc4a453542acc13ea783c61578b24

SHA1
680a5fb691def55fd459fc28e7b2ee460e2507eb

SHA256
675e19bfe804a6e02d4e669027146942ebc158dcd223e1419fa1f3f0e1906f72

SHA512
388bdc67e365b74a0fdafcd8a74f1ac6573b3005db93d1bd1bba817f9b7f99340f4fbe72fb48b4dd186966d30611317ed57fa9d280082178ee3107fcc38e5b1e

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

Filesize
941KB

MD5
8dc3adf1c490211971c1e2325f1424d2

SHA1
4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

SHA256
bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

SHA512
ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

Download Submit
\Windows\SysWOW64\259432392.txt

Filesize
899KB

MD5
55c10814638a6fa4e6f568e31bca2098

SHA1
4d38b950a0a06251f25af6df8acf94181e3b84e6

SHA256
db5fd6d2cd86c777a0ce800ea4c0e138aacfd3d90e0f5d9cbaf650401552da8b

SHA512
d326fbb0d077911567bb320bcc1acd94a74f962d1de0cda08a171859720979f7c066217babf2a6ddbb30f0e32b0350d7ea68a29dc9939ab3e0d67b75f0cd8b6f

Download Submit
\Windows\SysWOW64\Remote Data.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/2140-18-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2140-20-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2140-21-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2856-44-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2856-49-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2856-51-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download