gh0strat | 070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209

General

Target

070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe
Size

611KB
MD5

a4b124888d0af5544a3731d7cb92cf8c
SHA1

5371b2b1e31fcc13b2d871b1dd07337c82aa990c
SHA256

070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209
SHA512

f2f35fe71f962c01c7f16dce69c54ea151f42934fcc3e611e6081bb15696fe3004e997aabbda6040263f8e5202a2f728c9d92138c4b3afd0f85f3f22a5b39480
SSDEEP

12288:pFpuzZSkcBNrl5mTEUkDaSdJfpSaoNRVBUyMCe8VMM80B7qrI3iK1XBwZQ:pFmShDrngEUkDaiJfpSaoNRpMCe8CM8T

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 4 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2956-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/2956-18-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit
behavioral1/memory/2004-30-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit
behavioral1/memory/2180-29-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/memory/2956-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/2956-18-0x0000000000400000-0x0000000000585000-memory.dmp	family_gh0strat
behavioral1/memory/2004-30-0x0000000000400000-0x0000000000585000-memory.dmp	family_gh0strat
behavioral1/memory/2180-29-0x0000000000400000-0x0000000000585000-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	Skcsk.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"	Skcsk.exe

Deletes itself 1 IoCs

pid	Process
3032	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2004	Skcsk.exe
2180	Skcsk.exe

Loads dropped DLL 1 IoCs

pid	Process
2004	Skcsk.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Skcsk.exe	070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe
File opened for modification	C:\Windows\SysWOW64\Skcsk.exe	070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2956-0-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral1/files/0x0008000000012117-9.dat	upx
behavioral1/memory/2004-10-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral1/memory/2956-18-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral1/memory/2004-30-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral1/memory/2180-29-0x0000000000400000-0x0000000000585000-memory.dmp	upx

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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Skcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Skcsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
3032	cmd.exe
2156	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2156	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2180	Skcsk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2956	070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe
Token: SeLoadDriverPrivilege	2180	Skcsk.exe
Token: 33	2180	Skcsk.exe
Token: SeIncBasePriorityPrivilege	2180	Skcsk.exe
Token: 33	2180	Skcsk.exe
Token: SeIncBasePriorityPrivilege	2180	Skcsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 3032	2956	070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe	31
PID 2956 wrote to memory of 3032	2956	070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe	31
PID 2956 wrote to memory of 3032	2956	070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe	31
PID 2956 wrote to memory of 3032	2956	070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe	31
PID 2004 wrote to memory of 2180	2004	Skcsk.exe	33
PID 2004 wrote to memory of 2180	2004	Skcsk.exe	33
PID 2004 wrote to memory of 2180	2004	Skcsk.exe	33
PID 2004 wrote to memory of 2180	2004	Skcsk.exe	33
PID 3032 wrote to memory of 2156	3032	cmd.exe	34
PID 3032 wrote to memory of 2156	3032	cmd.exe	34
PID 3032 wrote to memory of 2156	3032	cmd.exe	34
PID 3032 wrote to memory of 2156	3032	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe
"C:\Users\Admin\AppData\Local\Temp\070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956
- 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\070CAE~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3032
- - 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:2156

C:\Windows\SysWOW64\Skcsk.exe
C:\Windows\SysWOW64\Skcsk.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Windows\SysWOW64\Skcsk.exe
  C:\Windows\SysWOW64\Skcsk.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:2180

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\Skcsk.exe

Filesize
611KB

MD5
a4b124888d0af5544a3731d7cb92cf8c

SHA1
5371b2b1e31fcc13b2d871b1dd07337c82aa990c

SHA256
070caef96c13a2495078d3be81e4177a9af23f51fbe89dc02a63f927f4053209

SHA512
f2f35fe71f962c01c7f16dce69c54ea151f42934fcc3e611e6081bb15696fe3004e997aabbda6040263f8e5202a2f728c9d92138c4b3afd0f85f3f22a5b39480

Download Submit
memory/2004-10-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/2004-30-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/2180-29-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/2956-0-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/2956-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2956-18-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads