gh0strat | 0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3

General

Target
0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3.exe
Size 1.3MB
Sample240613-v62dvsxdla
SHA256 0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3
MD5 dfe77b041dfe28d5b56fe938da0862e3
SHA1 af57b770147a9487062bbeb5bf91f8b0c0507cc3
SHA512 b092eb8165f23a2a736ae4e0df15eaf3880ff5a6bf0bb81f370d6e443b15ba9242ebfd8f5fe92f660763cb212f5de98342a662bb7e4276201c794914aa521a87
SSDEEP 24576:5OyHutimZ9VSly2hVvHW6qMnSbTBBhBMNk:0HPkVOBTK
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/4780-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/4312-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/760-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4780-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/4312-10-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/760-17-0x0000000010000000-0x000000001019F000-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

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

Executes dropped EXE 2 IoCs

pid	Process
4312	Stlme.exe
760	Stlme.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Stlme.exe	0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3.exe
File opened for modification	C:\Windows\SysWOW64\Stlme.exe	0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3788	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
760	Stlme.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4780	0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3.exe
Token: SeLoadDriverPrivilege	760	Stlme.exe
Token: 33	760	Stlme.exe
Token: SeIncBasePriorityPrivilege	760	Stlme.exe
Token: 33	760	Stlme.exe
Token: SeIncBasePriorityPrivilege	760	Stlme.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4780 wrote to memory of 3080	4780	0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3.exe	84
PID 4780 wrote to memory of 3080	4780	0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3.exe	84
PID 4780 wrote to memory of 3080	4780	0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3.exe	84
PID 4312 wrote to memory of 760	4312	Stlme.exe	85
PID 4312 wrote to memory of 760	4312	Stlme.exe	85
PID 4312 wrote to memory of 760	4312	Stlme.exe	85
PID 3080 wrote to memory of 3788	3080	cmd.exe	87
PID 3080 wrote to memory of 3788	3080	cmd.exe	87
PID 3080 wrote to memory of 3788	3080	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3.exe
"C:\Users\Admin\AppData\Local\Temp\0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4780
- 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\0B20B2~1.EXE > nul
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3080
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:3788

C:\Windows\SysWOW64\Stlme.exe
C:\Windows\SysWOW64\Stlme.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4312
- C:\Windows\SysWOW64\Stlme.exe
  C:\Windows\SysWOW64\Stlme.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:760

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Stlme.exe

Path C:\Windows\SysWOW64\Stlme.exe
Size 1.3MB
SHA256 0b20b2c89a90fc294b267fca4b5b20944d6e750151548e554e25e2a109249fd3
MD5 dfe77b041dfe28d5b56fe938da0862e3
SHA1 af57b770147a9487062bbeb5bf91f8b0c0507cc3
SHA512 b092eb8165f23a2a736ae4e0df15eaf3880ff5a6bf0bb81f370d6e443b15ba9242ebfd8f5fe92f660763cb212f5de98342a662bb7e4276201c794914aa521a87
SSDEEP 24576:5OyHutimZ9VSly2hVvHW6qMnSbTBBhBMNk:0HPkVOBTK
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/760-17-0x0000000010000000-0x000000001019F000-memory.dmp

Download

memory/4312-10-0x0000000010000000-0x000000001019F000-memory.dmp

Download

memory/4780-1-0x0000000010000000-0x000000001019F000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads