gh0strat | 0ee170eb92a1063c45512e55aa2c4c7e40e58e1cdc77ce13b5fe56163b871531

Analysis

max time kernel
122s
max time network
296s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
01-10-2023 09:07

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General

Target

nY4Ke1JkQH.exe
Size

214KB
MD5

415e87055596d88f1793be910abe60aa
SHA1

3182b59a3063df587987a6bc6f7e39c42c075e8f
SHA256

399e60f78e458f5e010da46a45c66ccf9b0fd30c128234a5dd9d9c9aa32ffa27
SHA512

4129ed2744ee101e22aefc63e495ddb2b877ae33d4d8aa957992bad9ea46896256c2272597e6c82d6ad94dc6dea24af0e3e706bdaa0b76d0e158b002597feda3
SSDEEP

3072:9kIcMtRin3zIf6naro5T6zaKPCbd5XX4E1Tgmn8Y5W646CN:9PPtRJ6NeKfocpnJ5W64

Score

10^/10

gh0strat persistence rat

Malware Config

Extracted

Family

gh0strat

154.221.25.208

Signatures

Gh0st RAT payload 2 IoCs

Processes:

resource	yara_rule
behavioral19/memory/2528-27-0x0000000010000000-0x000000001000B000-memory.dmp	family_gh0strat
behavioral19/memory/2528-30-0x0000000000400000-0x0000000000413000-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
Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

2560 svchost.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2800 cmd.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
2560	svchost.exe

pid	process
2800	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

nY4Ke1JkQH.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	nY4Ke1JkQH.exe

Enumerates connected drives 3 TTPs 22 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:

vbc.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

svchost.exe

description pid process target process

PID 2560 set thread context of 2528 2560 svchost.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 2560 set thread context of 2528	2560	svchost.exe	vbc.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:

vbc.exe

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

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2820 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2768 timeout.exe

pid	process
2820	schtasks.exe

pid	process
2768	timeout.exe

Suspicious behavior: EnumeratesProcesses 37 IoCs

Processes:

nY4Ke1JkQH.exesvchost.exevbc.exe

pid	process
2608	nY4Ke1JkQH.exe
2608	nY4Ke1JkQH.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe
2528	vbc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

nY4Ke1JkQH.exesvchost.exe

description pid process

Token: SeDebugPrivilege 2608 nY4Ke1JkQH.exe
Token: SeDebugPrivilege 2560 svchost.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

2528 vbc.exe

description	pid	process
Token: SeDebugPrivilege	2608	nY4Ke1JkQH.exe
Token: SeDebugPrivilege	2560	svchost.exe

pid	process
2528	vbc.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

nY4Ke1JkQH.execmd.execmd.exesvchost.exe

description	pid	process	target process
PID 2608 wrote to memory of 2380	2608	nY4Ke1JkQH.exe	cmd.exe
PID 2608 wrote to memory of 2380	2608	nY4Ke1JkQH.exe	cmd.exe
PID 2608 wrote to memory of 2380	2608	nY4Ke1JkQH.exe	cmd.exe
PID 2608 wrote to memory of 2380	2608	nY4Ke1JkQH.exe	cmd.exe
PID 2608 wrote to memory of 2800	2608	nY4Ke1JkQH.exe	cmd.exe
PID 2608 wrote to memory of 2800	2608	nY4Ke1JkQH.exe	cmd.exe
PID 2608 wrote to memory of 2800	2608	nY4Ke1JkQH.exe	cmd.exe
PID 2608 wrote to memory of 2800	2608	nY4Ke1JkQH.exe	cmd.exe
PID 2380 wrote to memory of 2820	2380	cmd.exe	schtasks.exe
PID 2380 wrote to memory of 2820	2380	cmd.exe	schtasks.exe
PID 2380 wrote to memory of 2820	2380	cmd.exe	schtasks.exe
PID 2380 wrote to memory of 2820	2380	cmd.exe	schtasks.exe
PID 2800 wrote to memory of 2768	2800	cmd.exe	timeout.exe
PID 2800 wrote to memory of 2768	2800	cmd.exe	timeout.exe
PID 2800 wrote to memory of 2768	2800	cmd.exe	timeout.exe
PID 2800 wrote to memory of 2768	2800	cmd.exe	timeout.exe
PID 2800 wrote to memory of 2560	2800	cmd.exe	svchost.exe
PID 2800 wrote to memory of 2560	2800	cmd.exe	svchost.exe
PID 2800 wrote to memory of 2560	2800	cmd.exe	svchost.exe
PID 2800 wrote to memory of 2560	2800	cmd.exe	svchost.exe
PID 2560 wrote to memory of 1220	2560	svchost.exe	AddInUtil.exe
PID 2560 wrote to memory of 1220	2560	svchost.exe	AddInUtil.exe
PID 2560 wrote to memory of 1220	2560	svchost.exe	AddInUtil.exe
PID 2560 wrote to memory of 1220	2560	svchost.exe	AddInUtil.exe
PID 2560 wrote to memory of 2636	2560	svchost.exe	Microsoft.Workflow.Compiler.exe
PID 2560 wrote to memory of 2636	2560	svchost.exe	Microsoft.Workflow.Compiler.exe
PID 2560 wrote to memory of 2636	2560	svchost.exe	Microsoft.Workflow.Compiler.exe
PID 2560 wrote to memory of 2636	2560	svchost.exe	Microsoft.Workflow.Compiler.exe
PID 2560 wrote to memory of 2580	2560	svchost.exe	dfsvc.exe
PID 2560 wrote to memory of 2580	2560	svchost.exe	dfsvc.exe
PID 2560 wrote to memory of 2580	2560	svchost.exe	dfsvc.exe
PID 2560 wrote to memory of 2580	2560	svchost.exe	dfsvc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe
PID 2560 wrote to memory of 2528	2560	svchost.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\nY4Ke1JkQH.exe
"C:\Users\Admin\AppData\Local\Temp\nY4Ke1JkQH.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2608

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2380

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
3⤵
- Creates scheduled task(s)
PID:2820

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp390A.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2800

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:2768

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2560

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInUtil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInUtil.exe"
4⤵
PID:1220

C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Workflow.Compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Workflow.Compiler.exe"
4⤵
PID:2636

C:\Windows\Microsoft.NET\Framework\v4.0.30319\dfsvc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\dfsvc.exe"
4⤵
PID:2580

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
4⤵
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scripting

T1064

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp390A.tmp.bat
Filesize
151B

MD5
a299045aeab36337517068076d6a20f4

SHA1
9fadd07064aa56185282ab4dbaf2851aff84e5c5

SHA256
3c134d57c5a6bd0da9ab056c583d259acd3490fbe22f38eb149087ff5d260c2a

SHA512
954c4060b08a6664b35c5fd031ba460bb6bc74de2e2dbf0c3139bbe4764d0fbf8ffb9a529c344bf443723c1b8af083b656af0caae08d3faeae8b18bbda72e5cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp390A.tmp.bat
Filesize
151B

MD5
a299045aeab36337517068076d6a20f4

SHA1
9fadd07064aa56185282ab4dbaf2851aff84e5c5

SHA256
3c134d57c5a6bd0da9ab056c583d259acd3490fbe22f38eb149087ff5d260c2a

SHA512
954c4060b08a6664b35c5fd031ba460bb6bc74de2e2dbf0c3139bbe4764d0fbf8ffb9a529c344bf443723c1b8af083b656af0caae08d3faeae8b18bbda72e5cf

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
Filesize
214KB

MD5
415e87055596d88f1793be910abe60aa

SHA1
3182b59a3063df587987a6bc6f7e39c42c075e8f

SHA256
399e60f78e458f5e010da46a45c66ccf9b0fd30c128234a5dd9d9c9aa32ffa27

SHA512
4129ed2744ee101e22aefc63e495ddb2b877ae33d4d8aa957992bad9ea46896256c2272597e6c82d6ad94dc6dea24af0e3e706bdaa0b76d0e158b002597feda3

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
Filesize
214KB

MD5
415e87055596d88f1793be910abe60aa

SHA1
3182b59a3063df587987a6bc6f7e39c42c075e8f

SHA256
399e60f78e458f5e010da46a45c66ccf9b0fd30c128234a5dd9d9c9aa32ffa27

SHA512
4129ed2744ee101e22aefc63e495ddb2b877ae33d4d8aa957992bad9ea46896256c2272597e6c82d6ad94dc6dea24af0e3e706bdaa0b76d0e158b002597feda3

Download Submit
\Users\Admin\AppData\Roaming\svchost.exe
Filesize
214KB

MD5
415e87055596d88f1793be910abe60aa

SHA1
3182b59a3063df587987a6bc6f7e39c42c075e8f

SHA256
399e60f78e458f5e010da46a45c66ccf9b0fd30c128234a5dd9d9c9aa32ffa27

SHA512
4129ed2744ee101e22aefc63e495ddb2b877ae33d4d8aa957992bad9ea46896256c2272597e6c82d6ad94dc6dea24af0e3e706bdaa0b76d0e158b002597feda3

Download Submit
memory/2528-22-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2528-30-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2528-27-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/2528-26-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2528-24-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2560-19-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2560-18-0x0000000001180000-0x00000000011BC000-memory.dmp

Filesize
240KB

Download
memory/2560-21-0x0000000000660000-0x000000000067A000-memory.dmp

Filesize
104KB

Download
memory/2560-20-0x0000000001030000-0x0000000001070000-memory.dmp

Filesize
256KB

Download
memory/2560-25-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2608-4-0x0000000000240000-0x000000000025A000-memory.dmp

Filesize
104KB

Download
memory/2608-0-0x0000000000020000-0x000000000005C000-memory.dmp

Filesize
240KB

Download
memory/2608-1-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/2608-2-0x0000000004BD0000-0x0000000004C10000-memory.dmp

Filesize
256KB

Download
memory/2608-13-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/2608-3-0x0000000000270000-0x000000000029C000-memory.dmp

Filesize
176KB

Download