gh0strat | ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6

General

Target

ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
Size

1.6MB
MD5

786e1083e402c760a01f5bbb3a30394c
SHA1

9209554639aacf9618ca5984fec28099762df7ed
SHA256

ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6
SHA512

c6bb4e7b16d72215833f61bae5faf1e027c5067f173d6833749a0c64811f94ec3ec672652aa864ecc947508b3006cb7cd4821281b0fe882d5cb0f8c7a7015474
SSDEEP

24576:+NfyIrXxi199zh0eROY2ZvVSlVFwxInPkOgWhBMDN:+Nt4FYY2puFwxIsOaN

Score

10^/10

gh0strat purplefox evasion persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 2 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral2/memory/2476-132-0x0000000010000000-0x00000000101A6000-memory.dmp	purplefox_rootkit
behavioral2/memory/1460-145-0x0000000010000000-0x00000000101A6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2476-132-0x0000000010000000-0x00000000101A6000-memory.dmp	family_gh0strat
behavioral2/memory/1460-145-0x0000000010000000-0x00000000101A6000-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

1460 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

4792 attrib.exe
4308 attrib.exe

pid	process
1460	windows.exe

pid	process
4792	attrib.exe
4308	attrib.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exewindows.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	windows.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)	\??\Z:	windows.exe
File opened (read-only)	\??\B:	windows.exe
File opened (read-only)	\??\F:	windows.exe
File opened (read-only)	\??\H:	windows.exe
File opened (read-only)	\??\J:	windows.exe
File opened (read-only)	\??\N:	windows.exe
File opened (read-only)	\??\R:	windows.exe
File opened (read-only)	\??\Y:	windows.exe
File opened (read-only)	\??\M:	windows.exe
File opened (read-only)	\??\O:	windows.exe
File opened (read-only)	\??\P:	windows.exe
File opened (read-only)	\??\S:	windows.exe
File opened (read-only)	\??\T:	windows.exe
File opened (read-only)	\??\E:	windows.exe
File opened (read-only)	\??\L:	windows.exe
File opened (read-only)	\??\U:	windows.exe
File opened (read-only)	\??\X:	windows.exe
File opened (read-only)	\??\G:	windows.exe
File opened (read-only)	\??\I:	windows.exe
File opened (read-only)	\??\K:	windows.exe
File opened (read-only)	\??\Q:	windows.exe
File opened (read-only)	\??\V:	windows.exe
File opened (read-only)	\??\W:	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 64 IoCs

Processes:

ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exewindows.exe

pid	process
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe
1460	windows.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exewindows.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
Token: SeIncBasePriorityPrivilege	1460	windows.exe
Token: 33	1460	windows.exe
Token: SeIncBasePriorityPrivilege	1460	windows.exe
Token: 33	1460	windows.exe
Token: SeIncBasePriorityPrivilege	1460	windows.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exewindows.exe

pid process

2476 ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
1460 windows.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.execmd.exewindows.execmd.exe

description	pid	process	target process
PID 2476 wrote to memory of 4312	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	cmd.exe
PID 2476 wrote to memory of 4312	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	cmd.exe
PID 2476 wrote to memory of 4312	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	cmd.exe
PID 2476 wrote to memory of 3108	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	cmd.exe
PID 2476 wrote to memory of 3108	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	cmd.exe
PID 2476 wrote to memory of 3108	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	cmd.exe
PID 2476 wrote to memory of 4508	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	cmd.exe
PID 2476 wrote to memory of 4508	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	cmd.exe
PID 2476 wrote to memory of 4508	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	cmd.exe
PID 4312 wrote to memory of 4792	4312	cmd.exe	attrib.exe
PID 4312 wrote to memory of 4792	4312	cmd.exe	attrib.exe
PID 4312 wrote to memory of 4792	4312	cmd.exe	attrib.exe
PID 2476 wrote to memory of 1460	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	windows.exe
PID 2476 wrote to memory of 1460	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	windows.exe
PID 2476 wrote to memory of 1460	2476	ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe	windows.exe
PID 1460 wrote to memory of 4776	1460	windows.exe	cmd.exe
PID 1460 wrote to memory of 4776	1460	windows.exe	cmd.exe
PID 1460 wrote to memory of 4776	1460	windows.exe	cmd.exe
PID 4776 wrote to memory of 4308	4776	cmd.exe	attrib.exe
PID 4776 wrote to memory of 4308	4776	cmd.exe	attrib.exe
PID 4776 wrote to memory of 4308	4776	cmd.exe	attrib.exe
PID 1460 wrote to memory of 4284	1460	windows.exe	cmd.exe
PID 1460 wrote to memory of 4284	1460	windows.exe	cmd.exe
PID 1460 wrote to memory of 4284	1460	windows.exe	cmd.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4792 attrib.exe
4308 attrib.exe

pid	process
4792	attrib.exe
4308	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe
"C:\Users\Admin\AppData\Local\Temp\ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2476

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c attrib C:\Users\Admin\AppData\Local\Temp\ECF9E3~1.EXE +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4312

C:\Windows\SysWOW64\attrib.exe
attrib C:\Users\Admin\AppData\Local\Temp\ECF9E3~1.EXE +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4792

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\Micros
2⤵
PID:3108

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\Micros
2⤵
PID:4508

C:\ProgramData\windows.exe
C:\ProgramData\windows.exe
2⤵
- Executes dropped EXE
- Checks computer location settings
- 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:1460

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:4776

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:4308

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\ru
3⤵
PID:4284

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

3

T1012

System Information Discovery

4

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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
fad8ce9ef436709815a1cec228cf2ceb

SHA1
397b2d26ede8e205b8b6b5d57d2234dc797e7680

SHA256
675fa1a3d7c443b8b8634e35351bdc96942b944ef1083b0a0347671d5e4bf28e

SHA512
66c2649b97f86b276030de64fedb3f110c59dd8cd6a9b76752fbef520fdcb87d60311ae44d647afac8b5bc0ccac6b9f22f1c27ada41cc0cc89e5106ea1223de4

Download Submit
C:\ProgramData\windows.exe
Filesize
1.6MB

MD5
786e1083e402c760a01f5bbb3a30394c

SHA1
9209554639aacf9618ca5984fec28099762df7ed

SHA256
ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6

SHA512
c6bb4e7b16d72215833f61bae5faf1e027c5067f173d6833749a0c64811f94ec3ec672652aa864ecc947508b3006cb7cd4821281b0fe882d5cb0f8c7a7015474

Download Submit
C:\ProgramData\windows.exe
Filesize
1.6MB

MD5
786e1083e402c760a01f5bbb3a30394c

SHA1
9209554639aacf9618ca5984fec28099762df7ed

SHA256
ecf9e328df5c1c75dd26f7503d58fec21092271352754f2397773949934fd8b6

SHA512
c6bb4e7b16d72215833f61bae5faf1e027c5067f173d6833749a0c64811f94ec3ec672652aa864ecc947508b3006cb7cd4821281b0fe882d5cb0f8c7a7015474

Download Submit
memory/1460-145-0x0000000010000000-0x00000000101A6000-memory.dmp

Filesize
1.6MB

Download
memory/1460-142-0x0000000000000000-mapping.dmp

Download
memory/2476-132-0x0000000010000000-0x00000000101A6000-memory.dmp

Filesize
1.6MB

Download
memory/3108-139-0x0000000000000000-mapping.dmp

Download
memory/4284-153-0x0000000000000000-mapping.dmp

Download
memory/4308-152-0x0000000000000000-mapping.dmp

Download
memory/4312-138-0x0000000000000000-mapping.dmp

Download
memory/4508-140-0x0000000000000000-mapping.dmp

Download
memory/4776-151-0x0000000000000000-mapping.dmp

Download
memory/4792-141-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads