gh0strat | 61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85

General

Target

61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe
Size

2.3MB
MD5

5630cbc8bab9ae8c880016900504284a
SHA1

ad94ae9fbf49ac02793078030097632349eebfa8
SHA256

61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85
SHA512

3afbc54695dd186c39d28189450acfddd1ac80bf51e2e58a4e88dc6c294dea1bfa483edc4c21d60bf08f04ad7ad4df11b09be856d34389b227bd3a9e5c15bb52
SSDEEP

49152:NvyXDbhPJiugp5H3fMOMdw9bjkxiIiFYh/oc51IXa+UI5moW:NvuVQFp5PMOzQyFYh/ZnIhv5mo

Score

10^/10

gh0strat purplefox rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 6 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral1/memory/1720-61-0x0000000010000000-0x00000000101A0000-memory.dmp	purplefox_rootkit
behavioral1/memory/1720-65-0x0000000000400000-0x00000000005B490F-memory.dmp	purplefox_rootkit
behavioral1/memory/1720-80-0x0000000000400000-0x00000000005B490F-memory.dmp	purplefox_rootkit
behavioral1/memory/664-82-0x0000000000400000-0x00000000005B490F-memory.dmp	purplefox_rootkit
behavioral1/memory/1432-84-0x0000000010000000-0x00000000101A0000-memory.dmp	purplefox_rootkit
behavioral1/memory/1432-86-0x0000000000400000-0x00000000005B490F-memory.dmp	purplefox_rootkit

Gh0st RAT payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1720-61-0x0000000010000000-0x00000000101A0000-memory.dmp	family_gh0strat
behavioral1/memory/1720-65-0x0000000000400000-0x00000000005B490F-memory.dmp	family_gh0strat
behavioral1/memory/1720-80-0x0000000000400000-0x00000000005B490F-memory.dmp	family_gh0strat
behavioral1/memory/664-82-0x0000000000400000-0x00000000005B490F-memory.dmp	family_gh0strat
behavioral1/memory/1432-84-0x0000000010000000-0x00000000101A0000-memory.dmp	family_gh0strat
behavioral1/memory/1432-86-0x0000000000400000-0x00000000005B490F-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
Executes dropped EXE 3 IoCs

Processes:

675.exeSSkGcsk.exeSSkGcsk.exe

pid process

1720 675.exe
664 SSkGcsk.exe
1432 SSkGcsk.exe
Loads dropped DLL 1 IoCs

Processes:

61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe

pid process

1764 61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe

pid	process
1720	675.exe
664	SSkGcsk.exe
1432	SSkGcsk.exe

Enumerates connected drives 3 TTPs 23 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

Processes:

SSkGcsk.exe

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

Drops file in System32 directory 4 IoCs

Processes:

61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe675.exe

description	ioc	process
File created	C:\Windows\SysWOW64\675.exe	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe
File created	C:\Windows\SysWOW64\SSkGcsk.exe	675.exe
File opened for modification	C:\Windows\SysWOW64\SSkGcsk.exe	675.exe
File opened for modification	C:\Windows\SysWOW64\675.exe	675.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe

pid	process
1764	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe
1764	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.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

Processes:

SSkGcsk.exe

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

Modifies data under HKEY_USERS 12 IoCs

Processes:

SSkGcsk.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	SSkGcsk.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	SSkGcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	SSkGcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	SSkGcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	SSkGcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	SSkGcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	SSkGcsk.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	SSkGcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	SSkGcsk.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	SSkGcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	SSkGcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	SSkGcsk.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1792 PING.EXE

pid	process
1792	PING.EXE

Suspicious behavior: EnumeratesProcesses 33 IoCs

Processes:

SSkGcsk.exe

pid	process
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe
1432	SSkGcsk.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe

pid process

1764 61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

675.exe

description pid process

Token: SeIncBasePriorityPrivilege 1720 675.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	1720	675.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe

pid	process
1764	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe
1764	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe
1764	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe675.exeSSkGcsk.execmd.exe

description	pid	process	target process
PID 1764 wrote to memory of 1720	1764	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe	675.exe
PID 1764 wrote to memory of 1720	1764	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe	675.exe
PID 1764 wrote to memory of 1720	1764	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe	675.exe
PID 1764 wrote to memory of 1720	1764	61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe	675.exe
PID 1720 wrote to memory of 1168	1720	675.exe	cmd.exe
PID 1720 wrote to memory of 1168	1720	675.exe	cmd.exe
PID 1720 wrote to memory of 1168	1720	675.exe	cmd.exe
PID 1720 wrote to memory of 1168	1720	675.exe	cmd.exe
PID 664 wrote to memory of 1432	664	SSkGcsk.exe	SSkGcsk.exe
PID 664 wrote to memory of 1432	664	SSkGcsk.exe	SSkGcsk.exe
PID 664 wrote to memory of 1432	664	SSkGcsk.exe	SSkGcsk.exe
PID 664 wrote to memory of 1432	664	SSkGcsk.exe	SSkGcsk.exe
PID 1168 wrote to memory of 1792	1168	cmd.exe	PING.EXE
PID 1168 wrote to memory of 1792	1168	cmd.exe	PING.EXE
PID 1168 wrote to memory of 1792	1168	cmd.exe	PING.EXE
PID 1168 wrote to memory of 1792	1168	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe
"C:\Users\Admin\AppData\Local\Temp\61c2dd595a4b99156cb45d62dda03eedd80e4fb4cb5ed2537fe14e72485c0c85.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1764

C:\Windows\SysWOW64\675.exe
C:\Windows\System32\675.exe
2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1720

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Windows\SysWOW64\675.exe > nul
3⤵
- Suspicious use of WriteProcessMemory
PID:1168

C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
4⤵
- Runs ping.exe
PID:1792

C:\Windows\SysWOW64\SSkGcsk.exe
C:\Windows\SysWOW64\SSkGcsk.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:664

C:\Windows\SysWOW64\SSkGcsk.exe
C:\Windows\SysWOW64\SSkGcsk.exe -acsi
2⤵
- Executes dropped EXE
- Enumerates connected drives
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
PID:1432

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\675.exe
Filesize
706KB

MD5
06b76d8bf89d24277e1f21de6037681f

SHA1
4b3fa3b2495500458ecc0eae1b40049d03d35924

SHA256
2a21847b38a710e2e2079184560014c8f72183d2ba32ae2f62198ab0f5e91447

SHA512
45434af995c413e5eeb56d703c5925363b916b87521deef418c3ef6fbdebaf72ef5caef10ec5dc330b438c46dd0c6be24a45c10097fdd27935749f9a9818454e

Download Submit
C:\Windows\SysWOW64\675.exe
Filesize
706KB

MD5
06b76d8bf89d24277e1f21de6037681f

SHA1
4b3fa3b2495500458ecc0eae1b40049d03d35924

SHA256
2a21847b38a710e2e2079184560014c8f72183d2ba32ae2f62198ab0f5e91447

SHA512
45434af995c413e5eeb56d703c5925363b916b87521deef418c3ef6fbdebaf72ef5caef10ec5dc330b438c46dd0c6be24a45c10097fdd27935749f9a9818454e

Download Submit
C:\Windows\SysWOW64\SSkGcsk.exe
Filesize
706KB

MD5
06b76d8bf89d24277e1f21de6037681f

SHA1
4b3fa3b2495500458ecc0eae1b40049d03d35924

SHA256
2a21847b38a710e2e2079184560014c8f72183d2ba32ae2f62198ab0f5e91447

SHA512
45434af995c413e5eeb56d703c5925363b916b87521deef418c3ef6fbdebaf72ef5caef10ec5dc330b438c46dd0c6be24a45c10097fdd27935749f9a9818454e

Download Submit
C:\Windows\SysWOW64\SSkGcsk.exe
Filesize
706KB

MD5
06b76d8bf89d24277e1f21de6037681f

SHA1
4b3fa3b2495500458ecc0eae1b40049d03d35924

SHA256
2a21847b38a710e2e2079184560014c8f72183d2ba32ae2f62198ab0f5e91447

SHA512
45434af995c413e5eeb56d703c5925363b916b87521deef418c3ef6fbdebaf72ef5caef10ec5dc330b438c46dd0c6be24a45c10097fdd27935749f9a9818454e

Download Submit
C:\Windows\SysWOW64\SSkGcsk.exe
Filesize
706KB

MD5
06b76d8bf89d24277e1f21de6037681f

SHA1
4b3fa3b2495500458ecc0eae1b40049d03d35924

SHA256
2a21847b38a710e2e2079184560014c8f72183d2ba32ae2f62198ab0f5e91447

SHA512
45434af995c413e5eeb56d703c5925363b916b87521deef418c3ef6fbdebaf72ef5caef10ec5dc330b438c46dd0c6be24a45c10097fdd27935749f9a9818454e

Download Submit
\Windows\SysWOW64\675.exe
Filesize
706KB

MD5
06b76d8bf89d24277e1f21de6037681f

SHA1
4b3fa3b2495500458ecc0eae1b40049d03d35924

SHA256
2a21847b38a710e2e2079184560014c8f72183d2ba32ae2f62198ab0f5e91447

SHA512
45434af995c413e5eeb56d703c5925363b916b87521deef418c3ef6fbdebaf72ef5caef10ec5dc330b438c46dd0c6be24a45c10097fdd27935749f9a9818454e

Download Submit
memory/664-82-0x0000000000400000-0x00000000005B490F-memory.dmp

Filesize
1.7MB

Download
memory/1168-78-0x0000000000000000-mapping.dmp

Download
memory/1432-86-0x0000000000400000-0x00000000005B490F-memory.dmp

Filesize
1.7MB

Download
memory/1432-84-0x0000000010000000-0x00000000101A0000-memory.dmp

Filesize
1.6MB

Download
memory/1432-79-0x0000000000000000-mapping.dmp

Download
memory/1720-65-0x0000000000400000-0x00000000005B490F-memory.dmp

Filesize
1.7MB

Download
memory/1720-80-0x0000000000400000-0x00000000005B490F-memory.dmp

Filesize
1.7MB

Download
memory/1720-57-0x0000000000000000-mapping.dmp

Download
memory/1720-61-0x0000000010000000-0x00000000101A0000-memory.dmp

Filesize
1.6MB

Download
memory/1764-54-0x00000000763D1000-0x00000000763D3000-memory.dmp

Filesize
8KB

Download
memory/1764-55-0x0000000000400000-0x0000000000943000-memory.dmp

Filesize
5.3MB

Download
memory/1764-63-0x0000000011C50000-0x0000000011E05000-memory.dmp

Filesize
1.7MB

Download
memory/1764-92-0x0000000000400000-0x0000000000943000-memory.dmp

Filesize
5.3MB

Download
memory/1792-91-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads