gh0strat | a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
15-10-2024 21:38

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General

Target

a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
Size

3.7MB
MD5

f256c44d4641c934aa30aaa2c262896e
SHA1

3db2152b6d53eb3d8d4b2093156131ebe6ad9ce6
SHA256

a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648
SHA512

0e9093839f4cfa7e8ad33240dec15865f487305b1c3f99d16c82bd08d1a8e1183e096b8829b73ec918fe71f788b501efc15922f6dff920d97ecf8f1d7027885c
SSDEEP

49152:LCwsbCANnKXferL7Vwe/Gg0P+WhBtqzEXw3HQqjNhbBT4:Ows2ANnKXOaeOgmhyR3HQKi

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/2132-20-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2132-19-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2736-43-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2736-47-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2736-49-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 6 IoCs

resource	yara_rule
behavioral1/files/0x0008000000016cc4-6.dat	family_gh0strat
behavioral1/memory/2132-20-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2132-19-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2736-43-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2736-47-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2736-49-0x0000000010000000-0x00000000101B6000-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	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\\259428040.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
1708	R.exe
2132	N.exe
2808	TXPlatfor.exe
2736	TXPlatfor.exe
2128	HD_a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
2660	Remote Data.exe

Loads dropped DLL 8 IoCs

pid	Process
2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
1708	R.exe
2176	svchost.exe
2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
2808	TXPlatfor.exe
2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
2176	svchost.exe
2660	Remote Data.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
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\259428040.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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2132-17-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2132-20-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2132-19-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2736-43-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2736-47-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2736-49-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 9 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	TXPlatfor.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HD_a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Remote Data.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
2764	cmd.exe
2664	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2664	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2736	TXPlatfor.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2132	N.exe
Token: SeBackupPrivilege	2128	HD_a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
Token: SeDebugPrivilege	2128	HD_a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
Token: SeLoadDriverPrivilege	2736	TXPlatfor.exe
Token: 33	2736	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2736	TXPlatfor.exe
Token: 33	2736	TXPlatfor.exe
Token: SeIncBasePriorityPrivilege	2736	TXPlatfor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 1708	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	30
PID 2280 wrote to memory of 1708	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	30
PID 2280 wrote to memory of 1708	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	30
PID 2280 wrote to memory of 1708	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	30
PID 2280 wrote to memory of 2132	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	33
PID 2280 wrote to memory of 2132	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	33
PID 2280 wrote to memory of 2132	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	33
PID 2280 wrote to memory of 2132	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	33
PID 2280 wrote to memory of 2132	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	33
PID 2280 wrote to memory of 2132	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	33
PID 2280 wrote to memory of 2132	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	33
PID 2132 wrote to memory of 2764	2132	N.exe	35
PID 2132 wrote to memory of 2764	2132	N.exe	35
PID 2132 wrote to memory of 2764	2132	N.exe	35
PID 2132 wrote to memory of 2764	2132	N.exe	35
PID 2808 wrote to memory of 2736	2808	TXPlatfor.exe	36
PID 2808 wrote to memory of 2736	2808	TXPlatfor.exe	36
PID 2808 wrote to memory of 2736	2808	TXPlatfor.exe	36
PID 2808 wrote to memory of 2736	2808	TXPlatfor.exe	36
PID 2808 wrote to memory of 2736	2808	TXPlatfor.exe	36
PID 2808 wrote to memory of 2736	2808	TXPlatfor.exe	36
PID 2808 wrote to memory of 2736	2808	TXPlatfor.exe	36
PID 2280 wrote to memory of 2128	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	38
PID 2280 wrote to memory of 2128	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	38
PID 2280 wrote to memory of 2128	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	38
PID 2280 wrote to memory of 2128	2280	a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe	38
PID 2764 wrote to memory of 2664	2764	cmd.exe	39
PID 2764 wrote to memory of 2664	2764	cmd.exe	39
PID 2764 wrote to memory of 2664	2764	cmd.exe	39
PID 2764 wrote to memory of 2664	2764	cmd.exe	39
PID 2176 wrote to memory of 2660	2176	svchost.exe	40
PID 2176 wrote to memory of 2660	2176	svchost.exe	40
PID 2176 wrote to memory of 2660	2176	svchost.exe	40
PID 2176 wrote to memory of 2660	2176	svchost.exe	40

C:\Users\Admin\AppData\Local\Temp\a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
"C:\Users\Admin\AppData\Local\Temp\a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2280
- 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:1708
- 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:2132
- - 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:2764
  - - 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:2664
- C:\Users\Admin\AppData\Local\Temp\HD_a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
  C:\Users\Admin\AppData\Local\Temp\HD_a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2128

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "Remote Data"
1⤵
PID:2544

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:2176
- C:\Windows\SysWOW64\Remote Data.exe
  "C:\Windows\system32\Remote Data.exe" "c:\windows\system32\259428040.txt",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2660

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:2808
- 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:2736

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
9de917f4b5a14bf41bc5318e4134a707

SHA1
a01aa8071d5729f07654181314f831590f722bd7

SHA256
d2c5011c5985ee30165b865041c5903c883aa93ac7a64d7c6982cfd84d3ca030

SHA512
ff693b35f5bcec6fe0c17c30c1a7a1d320ad1fc2e09893466e5e543c6e980ec5cda9bc00f97cbdeac075a5112dd23e7181960e6c778ff90abd384a1c430e12f7

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_a0239040a7128c6c3a7622063d1ecfcb9e345ea44652b09de3dc93923282e648.exe

Filesize
1.1MB

MD5
aac64ec400d1041f55871503c90707c9

SHA1
5abec44d794d428d15b055420bff241f871fe779

SHA256
212d1c30ceaafd16ac781145ab001adc92ed8c24254f2203f4171649ec4891bd

SHA512
c5001da5c21ced52a31f1ab1db1530489d12e74dccf3ad87693d97145cb4bfeb86e4cfde9fb905823968f65366488608ef9da586bee0d8abce615f638af0aa91

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

Filesize
941KB

MD5
8dc3adf1c490211971c1e2325f1424d2

SHA1
4eec4a4e7cb97c5efa6c72e0731cd090c0c4adc5

SHA256
bc29f2022ab3b812e50c8681ff196f090c038b5ab51e37daffac4469a8c2eb2c

SHA512
ae92ea20b359849dcdba4808119b154e3af5ef3687ee09de1797610fe8c4d3eb9065b068074d35adddb4b225d17c619baff3944cb137ad196bcef7a6507f920d

Download Submit
\Windows\SysWOW64\259428040.txt

Filesize
899KB

MD5
7a3cda09a0f92b7ef07731692b1db815

SHA1
aa35857e73860de298326c05ea9faea57cd56fd4

SHA256
5b13d716dd8233c79681bd57b4a76a62d843a61e940e75c158bd627e3aa7ba28

SHA512
bdb584ef30a18a5025324cf8beb8bd42449f53f2fd53d8e6e8b94de64d2ff187f5f3e0de1bfdd203ab22e8e7d4d9d062cda683ad6d7880d61e7000d4534515e2

Download Submit
\Windows\SysWOW64\Remote Data.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/2132-17-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2132-20-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2132-19-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2736-43-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2736-47-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2736-49-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download