gh0strat | 457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e

General

Target

457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe
Size

843KB
MD5

5978f114f65f127c2c001c9072f5ada1
SHA1

9911fead53712004d935eae494cff85f4535ca36
SHA256

457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e
SHA512

79fc94437616da3012eafe473f6cc9774976c77fb648ee82f85de7fb441da3d28cb815b318dc2f8b85be6cc084c3f774bc2f80c9414cb14f297cd5fe0081af27
SSDEEP

24576:4KnZJNXNon3Nr+C+l/pHIV5f0FENIxLtaT:4KnZj6ul/poTf0A4q

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 5 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/2304-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/1244-11-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/2304-18-0x0000000000400000-0x0000000000620000-memory.dmp	purplefox_rootkit
behavioral2/memory/1244-21-0x0000000000400000-0x0000000000620000-memory.dmp	purplefox_rootkit
behavioral2/memory/4500-37-0x0000000000400000-0x0000000000620000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/2304-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/1244-11-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/2304-18-0x0000000000400000-0x0000000000620000-memory.dmp	family_gh0strat
behavioral2/memory/1244-21-0x0000000000400000-0x0000000000620000-memory.dmp	family_gh0strat
behavioral2/memory/4500-37-0x0000000000400000-0x0000000000620000-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	Gwxyq.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"	Gwxyq.exe

Executes dropped EXE 2 IoCs

pid	Process
1244	Gwxyq.exe
4500	Gwxyq.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Gwxyq.exe	457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe
File opened for modification	C:\Windows\SysWOW64\Gwxyq.exe	457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2304-0-0x0000000000400000-0x0000000000620000-memory.dmp	upx
behavioral2/files/0x000a0000000234c7-9.dat	upx
behavioral2/memory/2304-18-0x0000000000400000-0x0000000000620000-memory.dmp	upx
behavioral2/memory/1244-21-0x0000000000400000-0x0000000000620000-memory.dmp	upx
behavioral2/memory/4500-37-0x0000000000400000-0x0000000000620000-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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gwxyq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gwxyq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2672	cmd.exe
4780	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4780	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4500	Gwxyq.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2304	457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe
Token: SeLoadDriverPrivilege	4500	Gwxyq.exe
Token: 33	4500	Gwxyq.exe
Token: SeIncBasePriorityPrivilege	4500	Gwxyq.exe
Token: 33	4500	Gwxyq.exe
Token: SeIncBasePriorityPrivilege	4500	Gwxyq.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 2672	2304	457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe	83
PID 2304 wrote to memory of 2672	2304	457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe	83
PID 2304 wrote to memory of 2672	2304	457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe	83
PID 1244 wrote to memory of 4500	1244	Gwxyq.exe	85
PID 1244 wrote to memory of 4500	1244	Gwxyq.exe	85
PID 1244 wrote to memory of 4500	1244	Gwxyq.exe	85
PID 2672 wrote to memory of 4780	2672	cmd.exe	86
PID 2672 wrote to memory of 4780	2672	cmd.exe	86
PID 2672 wrote to memory of 4780	2672	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe
"C:\Users\Admin\AppData\Local\Temp\457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2304
- 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\457D1E~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2672
- - 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:4780

C:\Windows\SysWOW64\Gwxyq.exe
C:\Windows\SysWOW64\Gwxyq.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Windows\SysWOW64\Gwxyq.exe
  C:\Windows\SysWOW64\Gwxyq.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:4500

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\Gwxyq.exe

Filesize
843KB

MD5
5978f114f65f127c2c001c9072f5ada1

SHA1
9911fead53712004d935eae494cff85f4535ca36

SHA256
457d1e7965ef93c5312bb892c02e70ac4eb69ae24c3bffc00016aa42eae96c1e

SHA512
79fc94437616da3012eafe473f6cc9774976c77fb648ee82f85de7fb441da3d28cb815b318dc2f8b85be6cc084c3f774bc2f80c9414cb14f297cd5fe0081af27

Download Submit
memory/1244-11-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/1244-21-0x0000000000400000-0x0000000000620000-memory.dmp

Filesize
2.1MB

Download
memory/2304-0-0x0000000000400000-0x0000000000620000-memory.dmp

Filesize
2.1MB

Download
memory/2304-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2304-18-0x0000000000400000-0x0000000000620000-memory.dmp

Filesize
2.1MB

Download
memory/4500-37-0x0000000000400000-0x0000000000620000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads