gh0strat | 3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95

General

Target

3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
Size

416KB
MD5

dfc7f23c614f09dbd3c51b91177ec88b
SHA1

0d3b03a486fa37e0fddd7e59c5a329869c663633
SHA256

3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95
SHA512

25e3d55463d672c18856598c9735e6d6b22152c2123769e1ebc8d13a6acc5843ff745ec1815d9f982b0b75f3036044baac326c8552a9a946eb787b3c4d8e3a7d
SSDEEP

6144:REg2/FmkfKc+Mz6aEctnbbWj/VI1N5kvsWT6kRXAfAarxGEEXXUOCwKHmp4N9:OtUsz6aEcV6rVI/HWTxRXAoi647

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
behavioral2/memory/4324-132-0x0000000002F50000-0x00000000030F6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4324-133-0x0000000002E10000-0x0000000002F49000-memory.dmp	purplefox_rootkit
behavioral2/memory/4324-134-0x0000000002F50000-0x00000000030F6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2492-145-0x00000000025B0000-0x0000000002756000-memory.dmp	purplefox_rootkit
behavioral2/memory/4324-146-0x0000000002F50000-0x00000000030F6000-memory.dmp	purplefox_rootkit
behavioral2/memory/2492-150-0x00000000025B0000-0x0000000002756000-memory.dmp	purplefox_rootkit
behavioral2/memory/2492-153-0x00000000025B0000-0x0000000002756000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 7 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4324-132-0x0000000002F50000-0x00000000030F6000-memory.dmp	family_gh0strat
behavioral2/memory/4324-133-0x0000000002E10000-0x0000000002F49000-memory.dmp	family_gh0strat
behavioral2/memory/4324-134-0x0000000002F50000-0x00000000030F6000-memory.dmp	family_gh0strat
behavioral2/memory/2492-145-0x00000000025B0000-0x0000000002756000-memory.dmp	family_gh0strat
behavioral2/memory/4324-146-0x0000000002F50000-0x00000000030F6000-memory.dmp	family_gh0strat
behavioral2/memory/2492-150-0x00000000025B0000-0x0000000002756000-memory.dmp	family_gh0strat
behavioral2/memory/2492-153-0x00000000025B0000-0x0000000002756000-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

2492 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

4552 attrib.exe
2856 attrib.exe

pid	process
2492	windows.exe

pid	process
4552	attrib.exe
2856	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:

3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exewindows.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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)	\??\B:	windows.exe
File opened (read-only)	\??\H:	windows.exe
File opened (read-only)	\??\I:	windows.exe
File opened (read-only)	\??\Q:	windows.exe
File opened (read-only)	\??\R:	windows.exe
File opened (read-only)	\??\U:	windows.exe
File opened (read-only)	\??\K:	windows.exe
File opened (read-only)	\??\L:	windows.exe
File opened (read-only)	\??\P:	windows.exe
File opened (read-only)	\??\Y:	windows.exe
File opened (read-only)	\??\F:	windows.exe
File opened (read-only)	\??\G:	windows.exe
File opened (read-only)	\??\O:	windows.exe
File opened (read-only)	\??\T:	windows.exe
File opened (read-only)	\??\V:	windows.exe
File opened (read-only)	\??\W:	windows.exe
File opened (read-only)	\??\X:	windows.exe
File opened (read-only)	\??\Z:	windows.exe
File opened (read-only)	\??\E:	windows.exe
File opened (read-only)	\??\J:	windows.exe
File opened (read-only)	\??\M:	windows.exe
File opened (read-only)	\??\N:	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 64 IoCs

Processes:

3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exewindows.exe

pid	process
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe
2492	windows.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exewindows.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
Token: SeIncBasePriorityPrivilege	2492	windows.exe
Token: 33	2492	windows.exe
Token: SeIncBasePriorityPrivilege	2492	windows.exe
Token: 33	2492	windows.exe
Token: SeIncBasePriorityPrivilege	2492	windows.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exewindows.exe

pid process

4324 3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
2492 windows.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.execmd.exewindows.execmd.exe

description	pid	process	target process
PID 4324 wrote to memory of 5036	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 5036	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 5036	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 4932	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 4932	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 4932	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 4280	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 4280	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 4280	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 460	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 460	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 4324 wrote to memory of 460	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	cmd.exe
PID 5036 wrote to memory of 4552	5036	cmd.exe	attrib.exe
PID 5036 wrote to memory of 4552	5036	cmd.exe	attrib.exe
PID 5036 wrote to memory of 4552	5036	cmd.exe	attrib.exe
PID 4324 wrote to memory of 2492	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	windows.exe
PID 4324 wrote to memory of 2492	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	windows.exe
PID 4324 wrote to memory of 2492	4324	3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe	windows.exe
PID 2492 wrote to memory of 2004	2492	windows.exe	cmd.exe
PID 2492 wrote to memory of 2004	2492	windows.exe	cmd.exe
PID 2492 wrote to memory of 2004	2492	windows.exe	cmd.exe
PID 2004 wrote to memory of 2856	2004	cmd.exe	attrib.exe
PID 2004 wrote to memory of 2856	2004	cmd.exe	attrib.exe
PID 2004 wrote to memory of 2856	2004	cmd.exe	attrib.exe
PID 2492 wrote to memory of 3996	2492	windows.exe	cmd.exe
PID 2492 wrote to memory of 3996	2492	windows.exe	cmd.exe
PID 2492 wrote to memory of 3996	2492	windows.exe	cmd.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4552 attrib.exe
2856 attrib.exe

pid	process
4552	attrib.exe
2856	attrib.exe

C:\Users\Admin\AppData\Local\Temp\3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe
"C:\Users\Admin\AppData\Local\Temp\3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4324

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c attrib C:\Users\Admin\AppData\Local\Temp\3783F3~1.EXE +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:5036

C:\Windows\SysWOW64\attrib.exe
attrib C:\Users\Admin\AppData\Local\Temp\3783F3~1.EXE +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4552

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\Micros
2⤵
PID:4280

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\Micros
2⤵
PID:4932

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\Micros
2⤵
PID:460

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:2492

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:2004

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:2856

C:\Windows\SysWOW64\cmd.exe
cmd /c md C:\ProgramData\ru
3⤵
PID:3996

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

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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
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
94B

MD5
0152439df609b41e4e0314303534dcc6

SHA1
7708dc87728d70cb230d9475154a44b82496d91c

SHA256
765bab985a52c6a63ee1af27bce853626e16a8a53106893a3560e0a97dc5806e

SHA512
ba80f943ad211c950cdd81f7d6e3caabf0db82227cd2eed340a76a21a6e56c21d2a2760e9acf89c78903f4c239e9df7db897e4e76a2ab7bb07242d9751c9f01c

Download Submit
C:\ProgramData\windows.exe
Filesize
416KB

MD5
dfc7f23c614f09dbd3c51b91177ec88b

SHA1
0d3b03a486fa37e0fddd7e59c5a329869c663633

SHA256
3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95

SHA512
25e3d55463d672c18856598c9735e6d6b22152c2123769e1ebc8d13a6acc5843ff745ec1815d9f982b0b75f3036044baac326c8552a9a946eb787b3c4d8e3a7d

Download Submit
C:\ProgramData\windows.exe
Filesize
416KB

MD5
dfc7f23c614f09dbd3c51b91177ec88b

SHA1
0d3b03a486fa37e0fddd7e59c5a329869c663633

SHA256
3783f305e648ec62701e1a3c57b8897e028a7294e77f8868eb72c04e41b4bb95

SHA512
25e3d55463d672c18856598c9735e6d6b22152c2123769e1ebc8d13a6acc5843ff745ec1815d9f982b0b75f3036044baac326c8552a9a946eb787b3c4d8e3a7d

Download Submit
memory/460-138-0x0000000000000000-mapping.dmp

Download
memory/2004-147-0x0000000000000000-mapping.dmp

Download
memory/2492-140-0x0000000000000000-mapping.dmp

Download
memory/2492-153-0x00000000025B0000-0x0000000002756000-memory.dmp

Filesize
1.6MB

Download
memory/2492-145-0x00000000025B0000-0x0000000002756000-memory.dmp

Filesize
1.6MB

Download
memory/2492-150-0x00000000025B0000-0x0000000002756000-memory.dmp

Filesize
1.6MB

Download
memory/2856-148-0x0000000000000000-mapping.dmp

Download
memory/3996-149-0x0000000000000000-mapping.dmp

Download
memory/4280-137-0x0000000000000000-mapping.dmp

Download
memory/4324-146-0x0000000002F50000-0x00000000030F6000-memory.dmp

Filesize
1.6MB

Download
memory/4324-132-0x0000000002F50000-0x00000000030F6000-memory.dmp

Filesize
1.6MB

Download
memory/4324-134-0x0000000002F50000-0x00000000030F6000-memory.dmp

Filesize
1.6MB

Download
memory/4324-133-0x0000000002E10000-0x0000000002F49000-memory.dmp

Filesize
1.2MB

Download
memory/4552-139-0x0000000000000000-mapping.dmp

Download
memory/4932-136-0x0000000000000000-mapping.dmp

Download
memory/5036-135-0x0000000000000000-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