gh0strat | f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40

General

Target

f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40.exe
Size

1.3MB
MD5

eed7ed9dcc7e3e122772ce372452e737
SHA1

95730b2c5b994334ec66983af83124a1ca1da616
SHA256

f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40
SHA512

bcfe561c9b03efa4698d7a187e266916ff4eab9fca5f436dc14eeb3abc4fb497c4a94852d3fcb4dd5ab274c4d991559850aa92d7d55b75f03eab8439ddf325d5
SSDEEP

24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNA:QHPkVOBTK

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 1 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/1628-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/memory/1628-0-0x0000000010000000-0x000000001019F000-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
Gh0strat family
gh0strat
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Purplefox family
purplefox

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\QAssist.sys	Abcst.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"	Abcst.exe

Deletes itself 1 IoCs

pid	Process
1616	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
1300	Abcst.exe
2300	Abcst.exe

Loads dropped DLL 1 IoCs

pid	Process
1300	Abcst.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Abcst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Abcst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
1616	cmd.exe
2928	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2928	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2300	Abcst.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1628	f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40.exe
Token: SeLoadDriverPrivilege	2300	Abcst.exe
Token: 33	2300	Abcst.exe
Token: SeIncBasePriorityPrivilege	2300	Abcst.exe
Token: 33	2300	Abcst.exe
Token: SeIncBasePriorityPrivilege	2300	Abcst.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 1616	1628	f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40.exe	29
PID 1628 wrote to memory of 1616	1628	f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40.exe	29
PID 1628 wrote to memory of 1616	1628	f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40.exe	29
PID 1628 wrote to memory of 1616	1628	f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40.exe	29
PID 1300 wrote to memory of 2300	1300	Abcst.exe	31
PID 1300 wrote to memory of 2300	1300	Abcst.exe	31
PID 1300 wrote to memory of 2300	1300	Abcst.exe	31
PID 1300 wrote to memory of 2300	1300	Abcst.exe	31
PID 1616 wrote to memory of 2928	1616	cmd.exe	32
PID 1616 wrote to memory of 2928	1616	cmd.exe	32
PID 1616 wrote to memory of 2928	1616	cmd.exe	32
PID 1616 wrote to memory of 2928	1616	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40.exe
"C:\Users\Admin\AppData\Local\Temp\f436db1cb6d67d285f01a1106be8e129160d31d5079b4e130f40a6b3b57f2f40.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1628
- 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\F436DB~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1616
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2928

C:\ProgramData\Application Data\DRM\Abcst.exe
"C:\ProgramData\Application Data\DRM\Abcst.exe" -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1300
- C:\ProgramData\Application Data\DRM\Abcst.exe
  "C:\ProgramData\Application Data\DRM\Abcst.exe" -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:2300