gh0strat | 7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196

Analysis

max time kernel
142s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
31/08/2023, 22:24

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General

Target
7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196.exe
Size 1.3MB
Sample230831-2bls9abb86
SHA256 7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196
MD5 66d1a5be08297437d08c0b365359ccf5
SHA1 599ef66c3593ce5fc9549b35048c14c921ec10df
SHA512 b8226280647e92b36ac13c9096295e318e385cc7ca65fc0e27c3db303a17e5b9be095489f8a0fec67e9331e8643b1186b1eba0d9c32922bc67da3116545c1a4b
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNY:QHPkVOBTK
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 2 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/396-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/2540-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral2/memory/396-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/2540-10-0x0000000010000000-0x000000001019F000-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	Xypqr.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"	Xypqr.exe

Executes dropped EXE 2 IoCs

pid	Process
2540	Xypqr.exe
3516	Xypqr.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)	\??\J:	Xypqr.exe
File opened (read-only)	\??\L:	Xypqr.exe
File opened (read-only)	\??\N:	Xypqr.exe
File opened (read-only)	\??\O:	Xypqr.exe
File opened (read-only)	\??\T:	Xypqr.exe
File opened (read-only)	\??\E:	Xypqr.exe
File opened (read-only)	\??\I:	Xypqr.exe
File opened (read-only)	\??\S:	Xypqr.exe
File opened (read-only)	\??\X:	Xypqr.exe
File opened (read-only)	\??\Y:	Xypqr.exe
File opened (read-only)	\??\Z:	Xypqr.exe
File opened (read-only)	\??\B:	Xypqr.exe
File opened (read-only)	\??\H:	Xypqr.exe
File opened (read-only)	\??\K:	Xypqr.exe
File opened (read-only)	\??\M:	Xypqr.exe
File opened (read-only)	\??\U:	Xypqr.exe
File opened (read-only)	\??\V:	Xypqr.exe
File opened (read-only)	\??\W:	Xypqr.exe
File opened (read-only)	\??\G:	Xypqr.exe
File opened (read-only)	\??\Q:	Xypqr.exe
File opened (read-only)	\??\R:	Xypqr.exe
File opened (read-only)	\??\P:	Xypqr.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Xypqr.exe	7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196.exe
File created	C:\Windows\SysWOW64\Xypqr.exe	7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Xypqr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	Xypqr.exe

Modifies data under HKEY_USERS 5 IoCs

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2380	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe
3516	Xypqr.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3516	Xypqr.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	396	7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196.exe
Token: SeLoadDriverPrivilege	3516	Xypqr.exe
Token: 33	3516	Xypqr.exe
Token: SeIncBasePriorityPrivilege	3516	Xypqr.exe
Token: 33	3516	Xypqr.exe
Token: SeIncBasePriorityPrivilege	3516	Xypqr.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 2752	396	7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196.exe	82
PID 396 wrote to memory of 2752	396	7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196.exe	82
PID 396 wrote to memory of 2752	396	7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196.exe	82
PID 2540 wrote to memory of 3516	2540	Xypqr.exe	83
PID 2540 wrote to memory of 3516	2540	Xypqr.exe	83
PID 2540 wrote to memory of 3516	2540	Xypqr.exe	83
PID 2752 wrote to memory of 2380	2752	cmd.exe	85
PID 2752 wrote to memory of 2380	2752	cmd.exe	85
PID 2752 wrote to memory of 2380	2752	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196.exe
"C:\Users\Admin\AppData\Local\Temp\7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:396
- 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\7A3132~1.EXE > nul
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:2380

C:\Windows\SysWOW64\Xypqr.exe
C:\Windows\SysWOW64\Xypqr.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\SysWOW64\Xypqr.exe
  C:\Windows\SysWOW64\Xypqr.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:3516

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

Replay Monitor

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Downloads

Xypqr.exe

Path C:\Windows\SysWOW64\Xypqr.exe
Size 1.3MB
SHA256 7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196
MD5 66d1a5be08297437d08c0b365359ccf5
SHA1 599ef66c3593ce5fc9549b35048c14c921ec10df
SHA512 b8226280647e92b36ac13c9096295e318e385cc7ca65fc0e27c3db303a17e5b9be095489f8a0fec67e9331e8643b1186b1eba0d9c32922bc67da3116545c1a4b
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNY:QHPkVOBTK
MD5 SHA1 SHA512 SSDEEP

Submit Download

Xypqr.exe

Path C:\Windows\SysWOW64\Xypqr.exe
Size 1.3MB
SHA256 7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196
MD5 66d1a5be08297437d08c0b365359ccf5
SHA1 599ef66c3593ce5fc9549b35048c14c921ec10df
SHA512 b8226280647e92b36ac13c9096295e318e385cc7ca65fc0e27c3db303a17e5b9be095489f8a0fec67e9331e8643b1186b1eba0d9c32922bc67da3116545c1a4b
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNY:QHPkVOBTK
MD5 SHA1 SHA512 SSDEEP

Submit Download

Xypqr.exe

Path C:\Windows\SysWOW64\Xypqr.exe
Size 1.3MB
SHA256 7a3132895925d9fe27e94795690c5e95c035d222cb4a29ae0cf5ded4d6b6e196
MD5 66d1a5be08297437d08c0b365359ccf5
SHA1 599ef66c3593ce5fc9549b35048c14c921ec10df
SHA512 b8226280647e92b36ac13c9096295e318e385cc7ca65fc0e27c3db303a17e5b9be095489f8a0fec67e9331e8643b1186b1eba0d9c32922bc67da3116545c1a4b
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNY:QHPkVOBTK
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/396-0-0x0000000010000000-0x000000001019F000-memory.dmp

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memory/2540-10-0x0000000010000000-0x000000001019F000-memory.dmp

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