gh0strat | bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d

General

Target

bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d.exe
Size

1.3MB
MD5

08c5306f17c22bca316beeec5a0ed6ee
SHA1

6a05b53cb816e5ac8b873cf642f05fd4fb4492a4
SHA256

bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d
SHA512

2e80cd94d58d23fff6fa476113df5183095850971a49dd2564994ba7018356434b716118d4c0b5c4b1c820a836edb29defb4a2b5a04aa467a4c94e19b6b58145
SSDEEP

24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNw:QHPkVOBTK

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/4200-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/4436-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral2/memory/4200-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/4436-10-0x0000000010000000-0x000000001019F000-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	Wxypq.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"	Wxypq.exe

Executes dropped EXE 2 IoCs

pid	Process
4436	Wxypq.exe
4152	Wxypq.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Wxypq.exe	bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d.exe
File created	C:\Windows\SysWOW64\Wxypq.exe	bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d.exe

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Wxypq.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Wxypq.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Wxypq.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1792	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4152	Wxypq.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4200	bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d.exe
Token: SeLoadDriverPrivilege	4152	Wxypq.exe
Token: 33	4152	Wxypq.exe
Token: SeIncBasePriorityPrivilege	4152	Wxypq.exe
Token: 33	4152	Wxypq.exe
Token: SeIncBasePriorityPrivilege	4152	Wxypq.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4200 wrote to memory of 5004	4200	bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d.exe	86
PID 4200 wrote to memory of 5004	4200	bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d.exe	86
PID 4200 wrote to memory of 5004	4200	bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d.exe	86
PID 4436 wrote to memory of 4152	4436	Wxypq.exe	88
PID 4436 wrote to memory of 4152	4436	Wxypq.exe	88
PID 4436 wrote to memory of 4152	4436	Wxypq.exe	88
PID 5004 wrote to memory of 1792	5004	cmd.exe	89
PID 5004 wrote to memory of 1792	5004	cmd.exe	89
PID 5004 wrote to memory of 1792	5004	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d.exe
"C:\Users\Admin\AppData\Local\Temp\bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4200
- 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\BF98A3~1.EXE > nul
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5004
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:1792

C:\Windows\SysWOW64\Wxypq.exe
C:\Windows\SysWOW64\Wxypq.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4436
- C:\Windows\SysWOW64\Wxypq.exe
  C:\Windows\SysWOW64\Wxypq.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Modifies data under HKEY_USERS
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:4152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\Wxypq.exe

Filesize
1.3MB

MD5
08c5306f17c22bca316beeec5a0ed6ee

SHA1
6a05b53cb816e5ac8b873cf642f05fd4fb4492a4

SHA256
bf98a376c8cc4e3c68ad4497909d28e569c3694b15c34afa56031396b2fb9f5d

SHA512
2e80cd94d58d23fff6fa476113df5183095850971a49dd2564994ba7018356434b716118d4c0b5c4b1c820a836edb29defb4a2b5a04aa467a4c94e19b6b58145

Download Submit
memory/4200-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4436-10-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads