gh0strat | 755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-10-2024 18:22

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General

Target

755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe
Size

2.5MB
MD5

f7559b288c0da13c5893d0114a2fecd9
SHA1

4be74885d7b6abe955982622c1b189af58963205
SHA256

755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce
SHA512

c8ae26533869d8cdbc246b4a052c94076894a781c3ac945a81920af1830894eac647f30a6b8784ed8c38709cf220577bbe9220ee9a95bb4beb5cd87a35c92527
SSDEEP

24576:8CwsbKgbQ5NANIvGTYwMHXA+wT1kfTw4SIuvB74fgt7ibhRM5QhKehFdMtRj7nH1:8CwsbCANnKXferL7Vwe/Gg0P+WhK

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 7 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral1/memory/1896-21-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/1896-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2940-36-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2940-37-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2940-38-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2940-42-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2940-43-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 8 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x0008000000016d31-6.dat	family_gh0strat
behavioral1/memory/1896-21-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/1896-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2940-36-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2940-37-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2940-38-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2940-42-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2940-43-0x0000000010000000-0x00000000101B6000-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\\259446931.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
2052	R.exe
1896	N.exe
2672	TXPlatfor.exe
2940	TXPlatfor.exe
2564	Remote Data.exe

Loads dropped DLL 7 IoCs

Processes:

755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exeR.exesvchost.exeTXPlatfor.exeRemote Data.exe

pid	Process
2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe
2052	R.exe
832	svchost.exe
2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe
2672	TXPlatfor.exe
832	svchost.exe
2564	Remote Data.exe

Drops file in System32 directory 6 IoCs

Processes:

R.exesvchost.exeN.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\259446931.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
File opened for modification	C:\Windows\SysWOW64\TXPlatfor.exe	N.exe

UPX packed file 9 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1896-17-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/1896-21-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/1896-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2940-36-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2940-35-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2940-37-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2940-38-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2940-42-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2940-43-0x0000000010000000-0x00000000101B6000-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

Processes:

cmd.exePING.EXERemote Data.exe755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exeR.exesvchost.exeN.exeTXPlatfor.exe

description	ioc	Process
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	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe
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

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:

PING.EXEcmd.exe

pid	Process
2884	PING.EXE
2836	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
2884	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

TXPlatfor.exe

pid	Process
2940	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

N.exeTXPlatfor.exe

description	pid	Process
Token: SeIncBasePriorityPrivilege	1896	N.exe
Token: SeLoadDriverPrivilege	2940	TXPlatfor.exe
Token: 33	2940	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2940	TXPlatfor.exe
Token: 33	2940	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2940	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe

pid	Process
2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe
2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exeN.exeTXPlatfor.execmd.exesvchost.exe

description	pid	Process	procid_target
PID 2100 wrote to memory of 2052	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	31
PID 2100 wrote to memory of 2052	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	31
PID 2100 wrote to memory of 2052	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	31
PID 2100 wrote to memory of 2052	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	31
PID 2100 wrote to memory of 1896	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	34
PID 2100 wrote to memory of 1896	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	34
PID 2100 wrote to memory of 1896	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	34
PID 2100 wrote to memory of 1896	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	34
PID 2100 wrote to memory of 1896	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	34
PID 2100 wrote to memory of 1896	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	34
PID 2100 wrote to memory of 1896	2100	755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe	34
PID 1896 wrote to memory of 2836	1896	N.exe	36
PID 1896 wrote to memory of 2836	1896	N.exe	36
PID 1896 wrote to memory of 2836	1896	N.exe	36
PID 1896 wrote to memory of 2836	1896	N.exe	36
PID 2672 wrote to memory of 2940	2672	TXPlatfor.exe	37
PID 2672 wrote to memory of 2940	2672	TXPlatfor.exe	37
PID 2672 wrote to memory of 2940	2672	TXPlatfor.exe	37
PID 2672 wrote to memory of 2940	2672	TXPlatfor.exe	37
PID 2672 wrote to memory of 2940	2672	TXPlatfor.exe	37
PID 2672 wrote to memory of 2940	2672	TXPlatfor.exe	37
PID 2672 wrote to memory of 2940	2672	TXPlatfor.exe	37
PID 2836 wrote to memory of 2884	2836	cmd.exe	39
PID 2836 wrote to memory of 2884	2836	cmd.exe	39
PID 2836 wrote to memory of 2884	2836	cmd.exe	39
PID 2836 wrote to memory of 2884	2836	cmd.exe	39
PID 832 wrote to memory of 2564	832	svchost.exe	40
PID 832 wrote to memory of 2564	832	svchost.exe	40
PID 832 wrote to memory of 2564	832	svchost.exe	40
PID 832 wrote to memory of 2564	832	svchost.exe	40

C:\Users\Admin\AppData\Local\Temp\755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe
"C:\Users\Admin\AppData\Local\Temp\755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2100
- 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:2052
- 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:1896
- - 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:2836
  - - 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:2884

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
PID:2300

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:832
- C:\Windows\SysWOW64\Remote Data.exe
  "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\259446931.txt",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2564

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:2672
- 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:2940

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
2.5MB

MD5
f7559b288c0da13c5893d0114a2fecd9

SHA1
4be74885d7b6abe955982622c1b189af58963205

SHA256
755c3b2c9c6d09e97a16067552a7d5fd18ac7b3e84b827eef0a84a7bb61071ce

SHA512
c8ae26533869d8cdbc246b4a052c94076894a781c3ac945a81920af1830894eac647f30a6b8784ed8c38709cf220577bbe9220ee9a95bb4beb5cd87a35c92527

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\R.exe

Filesize
941KB

MD5
8dc3adf1c490211971c1e2325f1424d2

SHA1
4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

SHA256
bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

SHA512
ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

Download Submit
\Windows\SysWOW64\259446931.txt

Filesize
899KB

MD5
c2ca23ca36d58530d766ffe61cafd5d3

SHA1
2e98ce76e5ab72d37e0cd4b1b03ff080c4ed47c8

SHA256
77bfd4f3f6a572ab07e2c15387b59b5721483d3faadb697cad912362ddd57dc6

SHA512
ee6b3ce66f230bf31e435afca1bc9d6ac512d8ea0e464c7163bca21b7bfbbe05a179641f523bcebaf9c10332fd8f2f066601199f1690f817d028eb6feaa890f6

Download Submit
\Windows\SysWOW64\Remote Data.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/1896-17-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/1896-21-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/1896-20-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2940-36-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2940-38-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2940-42-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2940-43-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2940-37-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2940-35-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download