gh0strat | 1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078

Analysis

max time kernel
140s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/03/2024, 05:58

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General

Target
1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078.exe
Size 1.3MB
Sample240318-gpcghshh64
SHA256 1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078
MD5 21b6763e437304ff41e05c1ded33afb4
SHA1 cf74f2c6074ac2a4ab32f864b799e57b4e36bbe9
SHA512 0d75aa577e74d4c4fee9b2fc0f02bb9e899ba1607ee58828950a1ba85837f85e5cc1701dd6dc4f1cadb03890d719a14edb69297d7d48c8a1b5fff65e32e63574
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNj:QHPkVOBTK
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/4148-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3008-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/4976-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4148-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3008-10-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/4976-17-0x0000000010000000-0x000000001019F000-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	sainbox.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"	sainbox.exe

Executes dropped EXE 2 IoCs

pid	Process
3008	sainbox.exe
4976	sainbox.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\Y:	sainbox.exe
File opened (read-only)	\??\Z:	sainbox.exe
File opened (read-only)	\??\J:	sainbox.exe
File opened (read-only)	\??\L:	sainbox.exe
File opened (read-only)	\??\Q:	sainbox.exe
File opened (read-only)	\??\R:	sainbox.exe
File opened (read-only)	\??\T:	sainbox.exe
File opened (read-only)	\??\U:	sainbox.exe
File opened (read-only)	\??\E:	sainbox.exe
File opened (read-only)	\??\N:	sainbox.exe
File opened (read-only)	\??\O:	sainbox.exe
File opened (read-only)	\??\V:	sainbox.exe
File opened (read-only)	\??\X:	sainbox.exe
File opened (read-only)	\??\B:	sainbox.exe
File opened (read-only)	\??\G:	sainbox.exe
File opened (read-only)	\??\H:	sainbox.exe
File opened (read-only)	\??\I:	sainbox.exe
File opened (read-only)	\??\K:	sainbox.exe
File opened (read-only)	\??\W:	sainbox.exe
File opened (read-only)	\??\M:	sainbox.exe
File opened (read-only)	\??\P:	sainbox.exe
File opened (read-only)	\??\S:	sainbox.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sainbox.exe	1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078.exe
File opened for modification	C:\Windows\SysWOW64\sainbox.exe	1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	sainbox.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	sainbox.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	sainbox.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	sainbox.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	sainbox.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	sainbox.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	sainbox.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3336	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe
4976	sainbox.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4976	sainbox.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4148	1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078.exe
Token: SeLoadDriverPrivilege	4976	sainbox.exe
Token: 33	4976	sainbox.exe
Token: SeIncBasePriorityPrivilege	4976	sainbox.exe
Token: 33	4976	sainbox.exe
Token: SeIncBasePriorityPrivilege	4976	sainbox.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4148 wrote to memory of 5116	4148	1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078.exe	96
PID 4148 wrote to memory of 5116	4148	1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078.exe	96
PID 4148 wrote to memory of 5116	4148	1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078.exe	96
PID 3008 wrote to memory of 4976	3008	sainbox.exe	98
PID 3008 wrote to memory of 4976	3008	sainbox.exe	98
PID 3008 wrote to memory of 4976	3008	sainbox.exe	98
PID 5116 wrote to memory of 3336	5116	cmd.exe	100
PID 5116 wrote to memory of 3336	5116	cmd.exe	100
PID 5116 wrote to memory of 3336	5116	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078.exe
"C:\Users\Admin\AppData\Local\Temp\1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4148
- 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\1B8D20~1.EXE > nul
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5116
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:3336

C:\Windows\SysWOW64\sainbox.exe
C:\Windows\SysWOW64\sainbox.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\SysWOW64\sainbox.exe
  C:\Windows\SysWOW64\sainbox.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Enumerates connected drives
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:4976

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3748 --field-trial-handle=3044,i,17059189006398306756,4247826696353232857,262144 --variations-seed-version /prefetch:8
1⤵
PID:1512

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

sainbox.exe

Path C:\Windows\SysWOW64\sainbox.exe
Size 1.3MB
SHA256 1b8d2016df8ef47a8ae0a2eae5f3d948803a6f519d88317661783e5519a86078
MD5 21b6763e437304ff41e05c1ded33afb4
SHA1 cf74f2c6074ac2a4ab32f864b799e57b4e36bbe9
SHA512 0d75aa577e74d4c4fee9b2fc0f02bb9e899ba1607ee58828950a1ba85837f85e5cc1701dd6dc4f1cadb03890d719a14edb69297d7d48c8a1b5fff65e32e63574
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNj:QHPkVOBTK
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3008-10-0x0000000010000000-0x000000001019F000-memory.dmp

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memory/4148-0-0x0000000010000000-0x000000001019F000-memory.dmp

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memory/4976-17-0x0000000010000000-0x000000001019F000-memory.dmp

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