gh0strat | 4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1

General

Target

4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe
Size

2.1MB
MD5

cc39d6c48eb9e93bb63e0b57af43e910
SHA1

8272d6188a3133092d5dcdc3777e262a74bc0912
SHA256

4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1
SHA512

1281b968c7a203a5d07efe67f3c7e1188366c0b13d7f24efba3d4c5576fe741191b11c0e02b89fa1b34195eefa960f573ec871c942d890a4beb02775d511eb86
SSDEEP

24576:bOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNKrWPoqnJGCNY1nJGCNYB+93dt:GHPkVOBTKKrWgUka+9Nt

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral2/memory/2384-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3800-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/3972-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2384-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3800-10-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/3972-17-0x0000000010000000-0x000000001019F000-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
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

Processes:

Jbrja.exe

description	ioc	Process
File created	C:\Windows\system32\drivers\QAssist.sys	Jbrja.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Jbrja.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys"	Jbrja.exe

Executes dropped EXE 2 IoCs

Processes:

Jbrja.exeJbrja.exe

pid	Process
3800	Jbrja.exe
3972	Jbrja.exe

Drops file in System32 directory 2 IoCs

Processes:

4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\Jbrja.exe	4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe
File opened for modification	C:\Windows\SysWOW64\Jbrja.exe	4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.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

Processes:

4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exeJbrja.exeJbrja.execmd.exePING.EXE

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Jbrja.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Jbrja.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

Processes:

PING.EXEcmd.exe

pid	Process
1072	PING.EXE
1728	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
1072	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

Jbrja.exe

pid	Process
3972	Jbrja.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exeJbrja.exe

description	pid	Process
Token: SeIncBasePriorityPrivilege	2384	4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe
Token: SeLoadDriverPrivilege	3972	Jbrja.exe
Token: 33	3972	Jbrja.exe
Token: SeIncBasePriorityPrivilege	3972	Jbrja.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exeJbrja.execmd.exe

description	pid	Process	procid_target
PID 2384 wrote to memory of 1728	2384	4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe	87
PID 2384 wrote to memory of 1728	2384	4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe	87
PID 2384 wrote to memory of 1728	2384	4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe	87
PID 3800 wrote to memory of 3972	3800	Jbrja.exe	89
PID 3800 wrote to memory of 3972	3800	Jbrja.exe	89
PID 3800 wrote to memory of 3972	3800	Jbrja.exe	89
PID 1728 wrote to memory of 1072	1728	cmd.exe	90
PID 1728 wrote to memory of 1072	1728	cmd.exe	90
PID 1728 wrote to memory of 1072	1728	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe
"C:\Users\Admin\AppData\Local\Temp\4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1N.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2384
- 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\4E44DD~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1728
- - 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:1072

C:\Windows\SysWOW64\Jbrja.exe
C:\Windows\SysWOW64\Jbrja.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3800
- C:\Windows\SysWOW64\Jbrja.exe
  C:\Windows\SysWOW64\Jbrja.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:3972

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\Jbrja.exe

Filesize
2.1MB

MD5
cc39d6c48eb9e93bb63e0b57af43e910

SHA1
8272d6188a3133092d5dcdc3777e262a74bc0912

SHA256
4e44dd4325beaf5d9e46cf3a34357d90280f7972e74f65ddf22bbf41398f6ae1

SHA512
1281b968c7a203a5d07efe67f3c7e1188366c0b13d7f24efba3d4c5576fe741191b11c0e02b89fa1b34195eefa960f573ec871c942d890a4beb02775d511eb86

Download Submit
memory/2384-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3800-10-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/3972-17-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads