gh0strat | 324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355

General

Target
324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355.exe
Size 1.3MB
Sample261007-lvtp7se17w
SHA256 324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355
MD5 aac92957065a3143f4cceb44792b285f
SHA1 d872e238c494084c9fa78a67fabb12f5231cf0e4
SHA512 0478b60eb7a3f126480e9e433bbd10b4238a9b1e706315fbf6bcbec8edd4816521a570f4ac76a802432f1d265b855befeff0eee4be5385f7df78e484d592cf88
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNJ:QHPkVOBTK
TLSH
T187557A591BAB4256DB5877B9C8A6A69409090F432F58C4B11E311E1EBD2734FFC23EBC
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution gh0strat purplefox persistence rat rootkit trojan

Malware Config

Signatures

Family: 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
Family: PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/5232-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/1620-7-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/5020-14-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/5232-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/1620-7-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/5020-14-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat

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 3 TTPs 1 IoCs

This determines the executable launched when a service starts. It can be used to establish persistence.

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Windows Service

T1543.003

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
1620	sainbox.exe
5020	sainbox.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sainbox.exe	324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355.exe
File opened for modification	C:\Windows\SysWOW64\sainbox.exe	324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3460	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	sainbox.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	sainbox.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	324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sainbox.exe
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

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
5024	PING.EXE
3460	cmd.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\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
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	sainbox.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5024	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
5020	sainbox.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	5232	324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355.exe
Token: SeLoadDriverPrivilege	5020	sainbox.exe
Token: 33	5020	sainbox.exe
Token: SeIncBasePriorityPrivilege	5020	sainbox.exe
Token: 33	5020	sainbox.exe
Token: SeIncBasePriorityPrivilege	5020	sainbox.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5232 wrote to memory of 3460	5232	324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355.exe	90
PID 1620 wrote to memory of 5020	1620	sainbox.exe	91
PID 3460 wrote to memory of 5024	3460	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355.exe
"C:\Users\Admin\AppData\Local\Temp\324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5232
- 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\324C6C~1.EXE > nul
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3460
- - 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:5024

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:1620
- 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
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:5020

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

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

2

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

sainbox.exe

Path C:\Windows\SysWOW64\sainbox.exe
Size 1.3MB
SHA256 324c6caa6c1b36e0f04bc55c9a6fe164457a9afef3e1131b441d0ddd76b52355
MD5 aac92957065a3143f4cceb44792b285f
SHA1 d872e238c494084c9fa78a67fabb12f5231cf0e4
SHA512 0478b60eb7a3f126480e9e433bbd10b4238a9b1e706315fbf6bcbec8edd4816521a570f4ac76a802432f1d265b855befeff0eee4be5385f7df78e484d592cf88
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNJ:QHPkVOBTK
TLSH
T187557A591BAB4256DB5877B9C8A6A69409090F432F58C4B11E311E1EBD2734FFC23EBC
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1620-7-0x0000000010000000-0x000000001019F000-memory.dmp

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memory/5020-14-0x0000000010000000-0x000000001019F000-memory.dmp

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memory/5232-0-0x0000000010000000-0x000000001019F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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