gh0strat | 6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399

General

Target

6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe
Size

575KB
MD5

944a1dcabfba38590bd48d1079f5c37e
SHA1

1bb078e5719846c45086adb2bf0b4d2913ad08f8
SHA256

6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399
SHA512

d075080a055db07bebbb7054d1fcce80552751488b75a6c7e96f103e8b7aa9f21415b90f247fb66d08acee1c855ddb41b16184ff18ac458809dc2a7d4a6639a6
SSDEEP

12288:ThymnwJFPNdgBAEHApqePJN1AmLM7uVq9sSvx5f5:TUmwrl2Ao7sJNlM7ymsSvff5

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 6 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2520-0-0x0000000000400000-0x0000000000559000-memory.dmp	purplefox_rootkit
behavioral1/memory/2520-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/2520-20-0x0000000000400000-0x0000000000559000-memory.dmp	purplefox_rootkit
behavioral1/memory/1740-22-0x0000000000400000-0x0000000000559000-memory.dmp	purplefox_rootkit
behavioral1/memory/3008-24-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/3008-39-0x0000000000400000-0x0000000000559000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 5 IoCs

resource	yara_rule
behavioral1/memory/2520-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/2520-20-0x0000000000400000-0x0000000000559000-memory.dmp	family_gh0strat
behavioral1/memory/1740-22-0x0000000000400000-0x0000000000559000-memory.dmp	family_gh0strat
behavioral1/memory/3008-24-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/3008-39-0x0000000000400000-0x0000000000559000-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	sainbox.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"	sainbox.exe

Deletes itself 1 IoCs

pid	Process
2416	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
1740	sainbox.exe
3008	sainbox.exe

Loads dropped DLL 1 IoCs

pid	Process
1740	sainbox.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sainbox.exe	6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe
File opened for modification	C:\Windows\SysWOW64\sainbox.exe	6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2520-0-0x0000000000400000-0x0000000000559000-memory.dmp	upx
behavioral1/files/0x0007000000012116-9.dat	upx
behavioral1/memory/1740-10-0x0000000000400000-0x0000000000559000-memory.dmp	upx
behavioral1/memory/2520-20-0x0000000000400000-0x0000000000559000-memory.dmp	upx
behavioral1/memory/1740-22-0x0000000000400000-0x0000000000559000-memory.dmp	upx
behavioral1/memory/3008-39-0x0000000000400000-0x0000000000559000-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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sainbox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sainbox.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
2416	cmd.exe
2960	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2960	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3008	sainbox.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2520	6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe
Token: SeLoadDriverPrivilege	3008	sainbox.exe
Token: 33	3008	sainbox.exe
Token: SeIncBasePriorityPrivilege	3008	sainbox.exe
Token: 33	3008	sainbox.exe
Token: SeIncBasePriorityPrivilege	3008	sainbox.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2416	2520	6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe	31
PID 2520 wrote to memory of 2416	2520	6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe	31
PID 2520 wrote to memory of 2416	2520	6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe	31
PID 2520 wrote to memory of 2416	2520	6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe	31
PID 1740 wrote to memory of 3008	1740	sainbox.exe	32
PID 1740 wrote to memory of 3008	1740	sainbox.exe	32
PID 1740 wrote to memory of 3008	1740	sainbox.exe	32
PID 1740 wrote to memory of 3008	1740	sainbox.exe	32
PID 2416 wrote to memory of 2960	2416	cmd.exe	34
PID 2416 wrote to memory of 2960	2416	cmd.exe	34
PID 2416 wrote to memory of 2960	2416	cmd.exe	34
PID 2416 wrote to memory of 2960	2416	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe
"C:\Users\Admin\AppData\Local\Temp\6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2520
- 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\6591E1~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2416
- - 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:2960

C:\Windows\SysWOW64\sainbox.exe
C:\Windows\SysWOW64\sainbox.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Windows\SysWOW64\sainbox.exe
  C:\Windows\SysWOW64\sainbox.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:3008

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\sainbox.exe

Filesize
575KB

MD5
944a1dcabfba38590bd48d1079f5c37e

SHA1
1bb078e5719846c45086adb2bf0b4d2913ad08f8

SHA256
6591e1bb2aec0502cb4402b20bdcdf9af9d03322cb1305457401c5eb57658399

SHA512
d075080a055db07bebbb7054d1fcce80552751488b75a6c7e96f103e8b7aa9f21415b90f247fb66d08acee1c855ddb41b16184ff18ac458809dc2a7d4a6639a6

Download Submit
memory/1740-10-0x0000000000400000-0x0000000000559000-memory.dmp

Filesize
1.3MB

Download
memory/1740-22-0x0000000000400000-0x0000000000559000-memory.dmp

Filesize
1.3MB

Download
memory/2520-0-0x0000000000400000-0x0000000000559000-memory.dmp

Filesize
1.3MB

Download
memory/2520-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2520-20-0x0000000000400000-0x0000000000559000-memory.dmp

Filesize
1.3MB

Download
memory/3008-24-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3008-39-0x0000000000400000-0x0000000000559000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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