gh0strat | 785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86

General

Target

785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe
Size

720KB
MD5

1503f941f4342798b87e4cca4a32c41b
SHA1

997d4799a979b008d546987eb03fea32e921f7de
SHA256

785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86
SHA512

af07c073534c4a2bce5f8183b2f98013d25c7c01fa653d6dc0e7b8787cd3915df9c097f2583cea78f7655533f33d5e28e5ee65535b11cc40a4201c6e3fc6f0eb
SSDEEP

6144:IFyGTrwC+pSxlKuIxYQPkMhNjufnlGqo2Hu8vFqR8FB3jey9uDyVuMgLB6M/cRxu:IrEdjQnlGqo/EER4ZeUuyuFkM/ci

Score

10^/10

gh0strat purplefox evasion persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 7 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral1/memory/1484-55-0x0000000003090000-0x0000000003236000-memory.dmp	purplefox_rootkit
behavioral1/memory/1484-61-0x0000000003090000-0x0000000003236000-memory.dmp	purplefox_rootkit
behavioral1/memory/1484-60-0x0000000002DB0000-0x0000000002F74000-memory.dmp	purplefox_rootkit
behavioral1/memory/1340-68-0x0000000002290000-0x0000000002436000-memory.dmp	purplefox_rootkit
behavioral1/memory/1340-72-0x0000000002150000-0x0000000002289000-memory.dmp	purplefox_rootkit
behavioral1/memory/1340-73-0x0000000002290000-0x0000000002436000-memory.dmp	purplefox_rootkit
behavioral1/memory/1340-77-0x0000000002290000-0x0000000002436000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1484-55-0x0000000003090000-0x0000000003236000-memory.dmp	family_gh0strat
behavioral1/memory/1484-61-0x0000000003090000-0x0000000003236000-memory.dmp	family_gh0strat
behavioral1/memory/1340-68-0x0000000002290000-0x0000000002436000-memory.dmp	family_gh0strat
behavioral1/memory/1340-72-0x0000000002150000-0x0000000002289000-memory.dmp	family_gh0strat
behavioral1/memory/1340-73-0x0000000002290000-0x0000000002436000-memory.dmp	family_gh0strat
behavioral1/memory/1340-77-0x0000000002290000-0x0000000002436000-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
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

windows.exe

pid process

1340 windows.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1144 attrib.exe
1704 attrib.exe
Loads dropped DLL 1 IoCs

Processes:

785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe

pid process

1484 785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe

pid	process
1340	windows.exe

pid	process
1144	attrib.exe
1704	attrib.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

windows.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Window°²È«·À»¤ÖÐÐÄÄ£¿é = "C:\\ProgramData\\Micros\\svchost.exe"	windows.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:

windows.exe

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

Drops file in Program Files directory 1 IoCs

Processes:

attrib.exe

description ioc process

File opened for modification C:\PROGRA~3\windows.exe attrib.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\PROGRA~3\windows.exe	attrib.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:

windows.exe

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

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exewindows.exe

pid	process
1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe
1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe
1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe
1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe
1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe
1340	windows.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exewindows.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe
Token: SeIncBasePriorityPrivilege	1340	windows.exe
Token: 33	1340	windows.exe
Token: SeIncBasePriorityPrivilege	1340	windows.exe
Token: 33	1340	windows.exe
Token: SeIncBasePriorityPrivilege	1340	windows.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exewindows.exe

pid process

1484 785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe
1340 windows.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.execmd.exewindows.execmd.exe

description	pid	process	target process
PID 1484 wrote to memory of 1752	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 1752	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 1752	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 1752	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 1164	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 1164	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 1164	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 1164	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 832	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 832	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 832	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1484 wrote to memory of 832	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	cmd.exe
PID 1752 wrote to memory of 1704	1752	cmd.exe	attrib.exe
PID 1752 wrote to memory of 1704	1752	cmd.exe	attrib.exe
PID 1752 wrote to memory of 1704	1752	cmd.exe	attrib.exe
PID 1752 wrote to memory of 1704	1752	cmd.exe	attrib.exe
PID 1484 wrote to memory of 1340	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	windows.exe
PID 1484 wrote to memory of 1340	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	windows.exe
PID 1484 wrote to memory of 1340	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	windows.exe
PID 1484 wrote to memory of 1340	1484	785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe	windows.exe
PID 1340 wrote to memory of 1896	1340	windows.exe	cmd.exe
PID 1340 wrote to memory of 1896	1340	windows.exe	cmd.exe
PID 1340 wrote to memory of 1896	1340	windows.exe	cmd.exe
PID 1340 wrote to memory of 1896	1340	windows.exe	cmd.exe
PID 1896 wrote to memory of 1144	1896	cmd.exe	attrib.exe
PID 1896 wrote to memory of 1144	1896	cmd.exe	attrib.exe
PID 1896 wrote to memory of 1144	1896	cmd.exe	attrib.exe
PID 1896 wrote to memory of 1144	1896	cmd.exe	attrib.exe
PID 1340 wrote to memory of 1760	1340	windows.exe	cmd.exe
PID 1340 wrote to memory of 1760	1340	windows.exe	cmd.exe
PID 1340 wrote to memory of 1760	1340	windows.exe	cmd.exe
PID 1340 wrote to memory of 1760	1340	windows.exe	cmd.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1704 attrib.exe
1144 attrib.exe

pid	process
1704	attrib.exe
1144	attrib.exe

C:\Users\Admin\AppData\Local\Temp\785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe
"C:\Users\Admin\AppData\Local\Temp\785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1484

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c attrib C:\Users\Admin\AppData\Local\Temp\785A96~1.EXE +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\SysWOW64\attrib.exe
attrib C:\Users\Admin\AppData\Local\Temp\785A96~1.EXE +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1704

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\Micros
2⤵
PID:1164

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\Micros
2⤵
PID:832

C:\ProgramData\windows.exe
C:\ProgramData\windows.exe
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1340

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c attrib C:\PROGRA~3\windows.exe +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:1896

C:\Windows\SysWOW64\attrib.exe
attrib C:\PROGRA~3\windows.exe +s +h
4⤵
- Sets file to hidden
- Drops file in Program Files directory
- Views/modifies file attributes
PID:1144

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\ru
3⤵
PID:1760

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

2

T1158

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\PROGRA~3\windows.exe
Filesize
720KB

MD5
1503f941f4342798b87e4cca4a32c41b

SHA1
997d4799a979b008d546987eb03fea32e921f7de

SHA256
785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86

SHA512
af07c073534c4a2bce5f8183b2f98013d25c7c01fa653d6dc0e7b8787cd3915df9c097f2583cea78f7655533f33d5e28e5ee65535b11cc40a4201c6e3fc6f0eb

Download Submit
C:\ProgramData\Micros\1.txt
Filesize
76KB

MD5
a0174e9945895fa8ace11f6bb4a64298

SHA1
527c4ebc005deb88f29edd83a23ac977735d76c4

SHA256
2dcd521895377ae3463dd61369c7fc6aafd8610e020592bf29b88888fc295ca0

SHA512
974f26161cc94c42fbe781db476562ccee90051f5c419ad156d4d17ab63231fa62a064c32cf1acc648e06d01d7f69e785f1421407859f2d78976d76a89b27dec

Download Submit
C:\ProgramData\Micros\2.txt
Filesize
44KB

MD5
96d097045736a2a1526d63c2d83a6b22

SHA1
dde933d7fcc22e41f981d043a3aa835e3b19f86e

SHA256
abbd451b402243bf00ad76f253d2b1c3f80d1d6f6c7f5b2f0d5e3fdd7f9c06e5

SHA512
e6ef5a7f25af760fef212b46b1796b8b386575e258a8b02a4c74510bb600e7fac3d344cceae14ef4b72a2520022e7cc611b34a56f737892ed4970ed1150945bd

Download Submit
C:\ProgramData\SHELL.TXT
Filesize
1.2MB

MD5
399dbed89b6eb31237ab085dbc18728a

SHA1
2ec1384fcbeef7122fc3ef97cb6a18ead214f7b8

SHA256
9d1d6b9d33f33fb777706e4a48fe3efec12f32a0b19d16db45995451d71ed44a

SHA512
4b4f7fd02754209b7527a7f1e68d87e072485e1bf12324850917afb384e59dc783170a0b11ec39acad2fea6753492ab07d8f610199074c1808a5bb3c7f42a1c4

Download Submit
C:\ProgramData\SHELL.ini
Filesize
92B

MD5
f1c9d622e621cdbdb0c6f2e3a22e0f2b

SHA1
3e0c97a7ab4965c7def4bc64efee5ecf62f0bec0

SHA256
c19f380144fb4d440735d4089d2a485f3eb70a55f404e5752eea94551cb0ee71

SHA512
baaf1840c8f0f72cc7541aa45db4e34ddb108e146bceeaf6045adfbd13d2a065e95f49e17c7ed57b873c65442f11cbaf068fca19559815e8c46e51cb5edbc1f2

Download Submit
C:\ProgramData\windows.exe
Filesize
720KB

MD5
1503f941f4342798b87e4cca4a32c41b

SHA1
997d4799a979b008d546987eb03fea32e921f7de

SHA256
785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86

SHA512
af07c073534c4a2bce5f8183b2f98013d25c7c01fa653d6dc0e7b8787cd3915df9c097f2583cea78f7655533f33d5e28e5ee65535b11cc40a4201c6e3fc6f0eb

Download Submit
\ProgramData\windows.exe
Filesize
720KB

MD5
1503f941f4342798b87e4cca4a32c41b

SHA1
997d4799a979b008d546987eb03fea32e921f7de

SHA256
785a96f2f975b6126b7951124a80961b53f513f2536ceea5d547a7926f951f86

SHA512
af07c073534c4a2bce5f8183b2f98013d25c7c01fa653d6dc0e7b8787cd3915df9c097f2583cea78f7655533f33d5e28e5ee65535b11cc40a4201c6e3fc6f0eb

Download Submit
memory/832-58-0x0000000000000000-mapping.dmp

Download
memory/1144-70-0x0000000000000000-mapping.dmp

Download
memory/1164-57-0x0000000000000000-mapping.dmp

Download
memory/1340-77-0x0000000002290000-0x0000000002436000-memory.dmp

Filesize
1.6MB

Download
memory/1340-63-0x0000000000000000-mapping.dmp

Download
memory/1340-73-0x0000000002290000-0x0000000002436000-memory.dmp

Filesize
1.6MB

Download
memory/1340-72-0x0000000002150000-0x0000000002289000-memory.dmp

Filesize
1.2MB

Download
memory/1340-68-0x0000000002290000-0x0000000002436000-memory.dmp

Filesize
1.6MB

Download
memory/1484-54-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

Filesize
8KB

Download
memory/1484-61-0x0000000003090000-0x0000000003236000-memory.dmp

Filesize
1.6MB

Download
memory/1484-55-0x0000000003090000-0x0000000003236000-memory.dmp

Filesize
1.6MB

Download
memory/1484-60-0x0000000002DB0000-0x0000000002F74000-memory.dmp

Filesize
1.8MB

Download
memory/1704-59-0x0000000000000000-mapping.dmp

Download
memory/1752-56-0x0000000000000000-mapping.dmp

Download
memory/1760-74-0x0000000000000000-mapping.dmp

Download
memory/1896-69-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads