gh0strat | dd06f7e555b0db061ef0f4a44eef9875d0b13341c0c701ae13274d5f473d2b90

General

Target

tmp.exe
Size

392KB
MD5

2f99005e926985ec16ad11e7c95e11b6
SHA1

540599b46fb10facdaf9f47ab987880a44aa1eff
SHA256

dd06f7e555b0db061ef0f4a44eef9875d0b13341c0c701ae13274d5f473d2b90
SHA512

bb171884a014b66e6690e4bf12466143140102813afff3ce2b61cb38eaec619795f62086442b7e7f7b1e5a325bf5447b54bc8cf7fb419f590b3807775dfa17a0
SSDEEP

6144:VRjbUHOvGUNIE/FDjBazqjWgR+MSEtvlZTONpRGX5B4PY3mA0O0Gp8Nhh5JodPU0:Ljbh9tDjiuT+xEtl0u4w3mAZyadMd

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 8 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral1/memory/1348-57-0x0000000010000000-0x00000000101A5000-memory.dmp	purplefox_rootkit
behavioral1/memory/1348-58-0x0000000010000000-0x00000000101A5000-memory.dmp	purplefox_rootkit
behavioral1/memory/1348-59-0x0000000010000000-0x00000000101A5000-memory.dmp	purplefox_rootkit
behavioral1/memory/2044-71-0x0000000010000000-0x00000000101A5000-memory.dmp	purplefox_rootkit
behavioral1/memory/536-78-0x0000000010000000-0x00000000101A5000-memory.dmp	purplefox_rootkit
behavioral1/memory/536-77-0x0000000010000000-0x00000000101A5000-memory.dmp	purplefox_rootkit
behavioral1/memory/536-79-0x0000000010000000-0x00000000101A5000-memory.dmp	purplefox_rootkit
behavioral1/memory/536-80-0x0000000010000000-0x00000000101A5000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 8 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1348-57-0x0000000010000000-0x00000000101A5000-memory.dmp	family_gh0strat
behavioral1/memory/1348-58-0x0000000010000000-0x00000000101A5000-memory.dmp	family_gh0strat
behavioral1/memory/1348-59-0x0000000010000000-0x00000000101A5000-memory.dmp	family_gh0strat
behavioral1/memory/2044-71-0x0000000010000000-0x00000000101A5000-memory.dmp	family_gh0strat
behavioral1/memory/536-78-0x0000000010000000-0x00000000101A5000-memory.dmp	family_gh0strat
behavioral1/memory/536-77-0x0000000010000000-0x00000000101A5000-memory.dmp	family_gh0strat
behavioral1/memory/536-79-0x0000000010000000-0x00000000101A5000-memory.dmp	family_gh0strat
behavioral1/memory/536-80-0x0000000010000000-0x00000000101A5000-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:

Skcsk.exe

description ioc process

File created C:\Windows\system32\drivers\QAssist.sys Skcsk.exe
Executes dropped EXE 2 IoCs

Processes:

Skcsk.exeSkcsk.exe

pid process

2044 Skcsk.exe
536 Skcsk.exe
Sets service image path in registry 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Processes:

Skcsk.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" Skcsk.exe

description	ioc	process
File created	C:\Windows\system32\drivers\QAssist.sys	Skcsk.exe

pid	process
2044	Skcsk.exe
536	Skcsk.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys"	Skcsk.exe

UPX packed file 10 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1348-55-0x0000000010000000-0x00000000101A5000-memory.dmp	upx
behavioral1/memory/1348-57-0x0000000010000000-0x00000000101A5000-memory.dmp	upx
behavioral1/memory/1348-58-0x0000000010000000-0x00000000101A5000-memory.dmp	upx
behavioral1/memory/1348-59-0x0000000010000000-0x00000000101A5000-memory.dmp	upx
behavioral1/memory/2044-71-0x0000000010000000-0x00000000101A5000-memory.dmp	upx
behavioral1/memory/536-75-0x0000000010000000-0x00000000101A5000-memory.dmp	upx
behavioral1/memory/536-78-0x0000000010000000-0x00000000101A5000-memory.dmp	upx
behavioral1/memory/536-77-0x0000000010000000-0x00000000101A5000-memory.dmp	upx
behavioral1/memory/536-79-0x0000000010000000-0x00000000101A5000-memory.dmp	upx
behavioral1/memory/536-80-0x0000000010000000-0x00000000101A5000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1428 cmd.exe

pid	process
1428	cmd.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:

Skcsk.exe

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

Drops file in Windows directory 2 IoCs

Processes:

tmp.exe

description ioc process

File created C:\Windows\Skcsk.exe tmp.exe
File opened for modification C:\Windows\Skcsk.exe tmp.exe

description	ioc	process
File created	C:\Windows\Skcsk.exe	tmp.exe
File opened for modification	C:\Windows\Skcsk.exe	tmp.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:

Skcsk.exe

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

Modifies data under HKEY_USERS 6 IoCs

Processes:

Skcsk.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	Skcsk.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	Skcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	Skcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	Skcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	Skcsk.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	Skcsk.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

892 PING.EXE

pid	process
892	PING.EXE

Suspicious behavior: EnumeratesProcesses 33 IoCs

Processes:

Skcsk.exe

pid	process
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe
536	Skcsk.exe

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

Skcsk.exe

pid process

536 Skcsk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

tmp.exeSkcsk.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	1348	tmp.exe
Token: SeLoadDriverPrivilege	536	Skcsk.exe
Token: 33	536	Skcsk.exe
Token: SeIncBasePriorityPrivilege	536	Skcsk.exe
Token: 33	536	Skcsk.exe
Token: SeIncBasePriorityPrivilege	536	Skcsk.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Skcsk.exetmp.execmd.exe

description	pid	process	target process
PID 2044 wrote to memory of 536	2044	Skcsk.exe	Skcsk.exe
PID 2044 wrote to memory of 536	2044	Skcsk.exe	Skcsk.exe
PID 2044 wrote to memory of 536	2044	Skcsk.exe	Skcsk.exe
PID 2044 wrote to memory of 536	2044	Skcsk.exe	Skcsk.exe
PID 2044 wrote to memory of 536	2044	Skcsk.exe	Skcsk.exe
PID 2044 wrote to memory of 536	2044	Skcsk.exe	Skcsk.exe
PID 2044 wrote to memory of 536	2044	Skcsk.exe	Skcsk.exe
PID 1348 wrote to memory of 1428	1348	tmp.exe	cmd.exe
PID 1348 wrote to memory of 1428	1348	tmp.exe	cmd.exe
PID 1348 wrote to memory of 1428	1348	tmp.exe	cmd.exe
PID 1348 wrote to memory of 1428	1348	tmp.exe	cmd.exe
PID 1348 wrote to memory of 1428	1348	tmp.exe	cmd.exe
PID 1348 wrote to memory of 1428	1348	tmp.exe	cmd.exe
PID 1348 wrote to memory of 1428	1348	tmp.exe	cmd.exe
PID 1428 wrote to memory of 892	1428	cmd.exe	PING.EXE
PID 1428 wrote to memory of 892	1428	cmd.exe	PING.EXE
PID 1428 wrote to memory of 892	1428	cmd.exe	PING.EXE
PID 1428 wrote to memory of 892	1428	cmd.exe	PING.EXE
PID 1428 wrote to memory of 892	1428	cmd.exe	PING.EXE
PID 1428 wrote to memory of 892	1428	cmd.exe	PING.EXE
PID 1428 wrote to memory of 892	1428	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1348

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\tmp.exe > nul
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1428

C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
3⤵
- Runs ping.exe
PID:892

C:\Windows\Skcsk.exe
C:\Windows\Skcsk.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2044

C:\Windows\Skcsk.exe
C:\Windows\Skcsk.exe -acsi
2⤵
- Drops file in Drivers directory
- Executes dropped EXE
- Sets service image path in registry
- Enumerates connected drives
- Checks processor information in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
PID:536

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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

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Downloads

C:\Windows\Skcsk.exe
Filesize
392KB

MD5
2f99005e926985ec16ad11e7c95e11b6

SHA1
540599b46fb10facdaf9f47ab987880a44aa1eff

SHA256
dd06f7e555b0db061ef0f4a44eef9875d0b13341c0c701ae13274d5f473d2b90

SHA512
bb171884a014b66e6690e4bf12466143140102813afff3ce2b61cb38eaec619795f62086442b7e7f7b1e5a325bf5447b54bc8cf7fb419f590b3807775dfa17a0

Download Submit
C:\Windows\Skcsk.exe
Filesize
392KB

MD5
2f99005e926985ec16ad11e7c95e11b6

SHA1
540599b46fb10facdaf9f47ab987880a44aa1eff

SHA256
dd06f7e555b0db061ef0f4a44eef9875d0b13341c0c701ae13274d5f473d2b90

SHA512
bb171884a014b66e6690e4bf12466143140102813afff3ce2b61cb38eaec619795f62086442b7e7f7b1e5a325bf5447b54bc8cf7fb419f590b3807775dfa17a0

Download Submit
C:\Windows\Skcsk.exe
Filesize
392KB

MD5
2f99005e926985ec16ad11e7c95e11b6

SHA1
540599b46fb10facdaf9f47ab987880a44aa1eff

SHA256
dd06f7e555b0db061ef0f4a44eef9875d0b13341c0c701ae13274d5f473d2b90

SHA512
bb171884a014b66e6690e4bf12466143140102813afff3ce2b61cb38eaec619795f62086442b7e7f7b1e5a325bf5447b54bc8cf7fb419f590b3807775dfa17a0

Download Submit
memory/536-75-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download
memory/536-78-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download
memory/536-80-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download
memory/536-79-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download
memory/536-67-0x0000000000000000-mapping.dmp

Download
memory/536-77-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download
memory/892-73-0x0000000000000000-mapping.dmp

Download
memory/1348-54-0x0000000075601000-0x0000000075603000-memory.dmp

Filesize
8KB

Download
memory/1348-59-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download
memory/1348-55-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download
memory/1348-57-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download
memory/1348-58-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download
memory/1428-70-0x0000000000000000-mapping.dmp

Download
memory/2044-71-0x0000000010000000-0x00000000101A5000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads