gh0strat | f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3

General

Target

f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.exe
Size

1.3MB
MD5

ac8fd4cc5e96f3037bd4246681b1f37a
SHA1

2c8bf4e25d9028a5381867b9eed9893a7c00e10d
SHA256

f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3
SHA512

e2934f60e1796868c79e5adeb5910abd0f3d169c1834574dde7ff89ae381f609a306c4a8ab9c8bb990117cdcecda315069f26db57cb5aea1b06ffcc212d74157
SSDEEP

24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMN1:QHPkVOBTK

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/4648-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/4108-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3240-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4648-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/4108-10-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3240-17-0x0000000010000000-0x000000001019F000-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	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

Executes dropped EXE 2 IoCs

pid	Process
4108	sainbox.exe
3240	sainbox.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sainbox.exe	f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.exe
File opened for modification	C:\Windows\SysWOW64\sainbox.exe	f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.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	sainbox.exe
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	f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.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
1200	cmd.exe
452	PING.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	sainbox.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	sainbox.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	sainbox.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
452	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3240	sainbox.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4648	f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.exe
Token: SeLoadDriverPrivilege	3240	sainbox.exe
Token: 33	3240	sainbox.exe
Token: SeIncBasePriorityPrivilege	3240	sainbox.exe
Token: 33	3240	sainbox.exe
Token: SeIncBasePriorityPrivilege	3240	sainbox.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 1200	4648	f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.exe	84
PID 4648 wrote to memory of 1200	4648	f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.exe	84
PID 4648 wrote to memory of 1200	4648	f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.exe	84
PID 4108 wrote to memory of 3240	4108	sainbox.exe	86
PID 4108 wrote to memory of 3240	4108	sainbox.exe	86
PID 4108 wrote to memory of 3240	4108	sainbox.exe	86
PID 1200 wrote to memory of 452	1200	cmd.exe	87
PID 1200 wrote to memory of 452	1200	cmd.exe	87
PID 1200 wrote to memory of 452	1200	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.exe
"C:\Users\Admin\AppData\Local\Temp\f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4648
- 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\F52CB5~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1200
- - 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:452

C:\Windows\SysWOW64\sainbox.exe
C:\Windows\SysWOW64\sainbox.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4108
- 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
  - Modifies data under HKEY_USERS
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:3240

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
1.3MB

MD5
ac8fd4cc5e96f3037bd4246681b1f37a

SHA1
2c8bf4e25d9028a5381867b9eed9893a7c00e10d

SHA256
f52cb5765f362b43e18ddafb2e31118fe684b22e142d3775621956ec8d1957b3

SHA512
e2934f60e1796868c79e5adeb5910abd0f3d169c1834574dde7ff89ae381f609a306c4a8ab9c8bb990117cdcecda315069f26db57cb5aea1b06ffcc212d74157

Download Submit
memory/3240-17-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4108-10-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4648-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads