gh0strat | a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c

General

Target

a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe
Size

611KB
MD5

c36546a1c28a51afe4533d1f3083bb3d
SHA1

a1de9a3f1b41d05f67161ad76613ca03c48ea8a7
SHA256

a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c
SHA512

b9018b7678ccc14524e245e8a08265c6927273475617dfd56267b483aaf3acee0fbb9c894582fc80bac81178d192729a6d58300e263fb2acf594379145cb4d50
SSDEEP

12288:QFpuzZSkcBNrl5mTEUkDaSdJfpSaoNRVBUyMCe8VMM80B7qrI3iK1XBwZQw:QFmShDrngEUkDaiJfpSaoNRpMCe8CM8x

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 7 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/3932-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/5096-12-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3932-19-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit
behavioral2/memory/5096-21-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit
behavioral2/memory/2044-22-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3932-37-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit
behavioral2/memory/2044-38-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 7 IoCs

resource	yara_rule
behavioral2/memory/3932-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/5096-12-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3932-19-0x0000000000400000-0x0000000000585000-memory.dmp	family_gh0strat
behavioral2/memory/5096-21-0x0000000000400000-0x0000000000585000-memory.dmp	family_gh0strat
behavioral2/memory/2044-22-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3932-37-0x0000000000400000-0x0000000000585000-memory.dmp	family_gh0strat
behavioral2/memory/2044-38-0x0000000000400000-0x0000000000585000-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	Phxph.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"	Phxph.exe

Executes dropped EXE 2 IoCs

pid	Process
5096	Phxph.exe
2044	Phxph.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Phxph.exe	a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe
File opened for modification	C:\Windows\SysWOW64\Phxph.exe	a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3932-0-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral2/memory/5096-11-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral2/files/0x000c000000023b1e-10.dat	upx
behavioral2/memory/3932-19-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral2/memory/5096-21-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral2/memory/3932-37-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral2/memory/2044-38-0x0000000000400000-0x0000000000585000-memory.dmp	upx

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	a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Phxph.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Phxph.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
3156	cmd.exe
3656	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3656	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2044	Phxph.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3932	a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe
Token: SeLoadDriverPrivilege	2044	Phxph.exe
Token: 33	2044	Phxph.exe
Token: SeIncBasePriorityPrivilege	2044	Phxph.exe
Token: 33	2044	Phxph.exe
Token: SeIncBasePriorityPrivilege	2044	Phxph.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 3156	3932	a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe	84
PID 3932 wrote to memory of 3156	3932	a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe	84
PID 3932 wrote to memory of 3156	3932	a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe	84
PID 5096 wrote to memory of 2044	5096	Phxph.exe	85
PID 5096 wrote to memory of 2044	5096	Phxph.exe	85
PID 5096 wrote to memory of 2044	5096	Phxph.exe	85
PID 3156 wrote to memory of 3656	3156	cmd.exe	87
PID 3156 wrote to memory of 3656	3156	cmd.exe	87
PID 3156 wrote to memory of 3656	3156	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe
"C:\Users\Admin\AppData\Local\Temp\a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3932
- 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\A2B98D~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3156
- - 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:3656

C:\Windows\SysWOW64\Phxph.exe
C:\Windows\SysWOW64\Phxph.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5096
- C:\Windows\SysWOW64\Phxph.exe
  C:\Windows\SysWOW64\Phxph.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:2044

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\Phxph.exe

Filesize
611KB

MD5
c36546a1c28a51afe4533d1f3083bb3d

SHA1
a1de9a3f1b41d05f67161ad76613ca03c48ea8a7

SHA256
a2b98d6820777aaacdb0646a2836b3ebc809b3fe9eef65d201e2ff343580721c

SHA512
b9018b7678ccc14524e245e8a08265c6927273475617dfd56267b483aaf3acee0fbb9c894582fc80bac81178d192729a6d58300e263fb2acf594379145cb4d50

Download Submit
memory/2044-22-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2044-38-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/3932-0-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/3932-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3932-19-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/3932-37-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/5096-11-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/5096-12-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/5096-21-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads