gh0strat | 62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1

General

Target

62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe
Size

248KB
MD5

dc38da17b0f0cc99f4831aba153bb28b
SHA1

b756ef1b0369e0822ed248363ae6c577d53a7834
SHA256

62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1
SHA512

2c5349b9555c7ddaa300652173eef422fdcfbe464b8f8fca9e2ac53088d860eb996c763506d8ca1fef9ae9a0fb4d9574c6faf164050deb8f27646607f1699f8c
SSDEEP

3072:whLXC/6ZxsIDrok7gJWyzebqkqNKktNXBPmaoTZ2xZS21+GCI2ekEbkAsH3mYBoj:whL46Z6IDvgJM5QmahxZS2EGCtr3X7F

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 1 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2684-12-0x0000000010000000-0x00000000101A4000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/memory/2684-12-0x0000000010000000-0x00000000101A4000-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
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2684	RuntimeBroker.exe

Loads dropped DLL 2 IoCs

pid	Process
2616	62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe
2684	RuntimeBroker.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Users\\Public\\Windows\\RuntimeBroker.exe"	RuntimeBroker.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\U:	RuntimeBroker.exe
File opened (read-only)	\??\W:	RuntimeBroker.exe
File opened (read-only)	\??\H:	RuntimeBroker.exe
File opened (read-only)	\??\M:	RuntimeBroker.exe
File opened (read-only)	\??\N:	RuntimeBroker.exe
File opened (read-only)	\??\P:	RuntimeBroker.exe
File opened (read-only)	\??\Q:	RuntimeBroker.exe
File opened (read-only)	\??\E:	RuntimeBroker.exe
File opened (read-only)	\??\I:	RuntimeBroker.exe
File opened (read-only)	\??\L:	RuntimeBroker.exe
File opened (read-only)	\??\Y:	RuntimeBroker.exe
File opened (read-only)	\??\T:	RuntimeBroker.exe
File opened (read-only)	\??\J:	RuntimeBroker.exe
File opened (read-only)	\??\K:	RuntimeBroker.exe
File opened (read-only)	\??\O:	RuntimeBroker.exe
File opened (read-only)	\??\R:	RuntimeBroker.exe
File opened (read-only)	\??\S:	RuntimeBroker.exe
File opened (read-only)	\??\B:	RuntimeBroker.exe
File opened (read-only)	\??\G:	RuntimeBroker.exe
File opened (read-only)	\??\V:	RuntimeBroker.exe
File opened (read-only)	\??\X:	RuntimeBroker.exe
File opened (read-only)	\??\Z:	RuntimeBroker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RuntimeBroker.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe
2684	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: 33	2684	RuntimeBroker.exe
Token: SeIncBasePriorityPrivilege	2684	RuntimeBroker.exe
Token: 33	2684	RuntimeBroker.exe
Token: SeIncBasePriorityPrivilege	2684	RuntimeBroker.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2616	62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe
2616	62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 2684	2616	62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe	31
PID 2616 wrote to memory of 2684	2616	62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe	31
PID 2616 wrote to memory of 2684	2616	62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe	31
PID 2616 wrote to memory of 2684	2616	62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe	31

C:\Users\Admin\AppData\Local\Temp\62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe
"C:\Users\Admin\AppData\Local\Temp\62856958c7571eacf182e9b38f59189d7681ac39513fe3d3778f4b0be4e6ede1.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Public\Windows\RuntimeBroker.exe
  "C:\Users\Public\Windows\RuntimeBroker.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Enumerates connected drives
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2684

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

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Public\Windows\UnityPlayer.dll

Filesize
1.6MB

MD5
e22704eb1f2d0773ec177ac4b8fa3185

SHA1
c0ab768d145525be8b6541de6aca8e19277e0771

SHA256
af3d583e35380b13afc52996cd53916f848eb409c9273f659f3ba0e9adbe9c1b

SHA512
0dfc92d2366cfe3aeea659dcb2fc2cd3f55bd8577c70bfb1d59f80e7d3f2a11695a29a4ec70b8428223d161d261409c3ddb7185daad79515726f72cc8dc47f1b

Download Submit
\Users\Public\Windows\RuntimeBroker.exe

Filesize
625KB

MD5
dec397e36e9f5e8a47040adbbf04e20b

SHA1
643f2b5b37723ebc493ba6993514a4b2d9171acb

SHA256
534fd2d6da5c361831eb7fbfd1b203fbb80cd363d33f69abc4eafc384bafdc5e

SHA512
b2cdd06c044ae8b4cf7ae5c32b65f2b03f733b93061b9076cf29103da53573460c7e5d53da72220055cdafb084c63019d4a134d562a06af81c1eaad30892845b

Download Submit
memory/2684-11-0x0000000076F00000-0x0000000076FD6000-memory.dmp

Filesize
856KB

Download
memory/2684-12-0x0000000010000000-0x00000000101A4000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads