gh0strat | 0ee170eb92a1063c45512e55aa2c4c7e40e58e1cdc77ce13b5fe56163b871531

Analysis

max time kernel
181s
max time network
303s
platform
windows10-1703_x64
resource
win10-20230915-en
resource tags

arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-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

resource	yara_rule
behavioral20/memory/4692-28-0x0000000010000000-0x000000001000B000-memory.dmp	family_gh0strat
behavioral20/memory/4692-31-0x0000000000400000-0x0000000000413000-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

pid	Process
4388	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-844837608-3875958368-2945961404-1000\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

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4388 set thread context of 4692	4388	svchost.exe	77

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

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

pid	Process
2164	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2056	timeout.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4940	nY4Ke1JkQH.exe
4388	svchost.exe
4388	svchost.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe
4692	aspnet_regiis.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	nY4Ke1JkQH.exe
Token: SeDebugPrivilege	4388	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4692	aspnet_regiis.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 2724	4940	nY4Ke1JkQH.exe	69
PID 4940 wrote to memory of 2724	4940	nY4Ke1JkQH.exe	69
PID 4940 wrote to memory of 2724	4940	nY4Ke1JkQH.exe	69
PID 4940 wrote to memory of 4840	4940	nY4Ke1JkQH.exe	70
PID 4940 wrote to memory of 4840	4940	nY4Ke1JkQH.exe	70
PID 4940 wrote to memory of 4840	4940	nY4Ke1JkQH.exe	70
PID 4840 wrote to memory of 2056	4840	cmd.exe	73
PID 4840 wrote to memory of 2056	4840	cmd.exe	73
PID 4840 wrote to memory of 2056	4840	cmd.exe	73
PID 2724 wrote to memory of 2164	2724	cmd.exe	74
PID 2724 wrote to memory of 2164	2724	cmd.exe	74
PID 2724 wrote to memory of 2164	2724	cmd.exe	74
PID 4840 wrote to memory of 4388	4840	cmd.exe	75
PID 4840 wrote to memory of 4388	4840	cmd.exe	75
PID 4840 wrote to memory of 4388	4840	cmd.exe	75
PID 4388 wrote to memory of 404	4388	svchost.exe	76
PID 4388 wrote to memory of 404	4388	svchost.exe	76
PID 4388 wrote to memory of 4692	4388	svchost.exe	77
PID 4388 wrote to memory of 4692	4388	svchost.exe	77
PID 4388 wrote to memory of 4692	4388	svchost.exe	77
PID 4388 wrote to memory of 4692	4388	svchost.exe	77
PID 4388 wrote to memory of 4692	4388	svchost.exe	77
PID 4388 wrote to memory of 4692	4388	svchost.exe	77
PID 4388 wrote to memory of 4692	4388	svchost.exe	77
PID 4388 wrote to memory of 4692	4388	svchost.exe	77
PID 4388 wrote to memory of 4692	4388	svchost.exe	77

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:4940
- 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:2724
- - 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:2164
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE975.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4840
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2056
- - 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:4388
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\EdmGen.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\EdmGen.exe"
      4⤵
      PID:404
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe"
      4⤵
      Enumerates connected drives
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of SetWindowsHookEx
      PID:4692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

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

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE975.tmp.bat

Filesize
151B

MD5
cc5d65641dde4b0d4b9ec19e47845a6c

SHA1
f683f4d1af84eb267cff15a38a90696392cfd6bc

SHA256
46b42182bdc14ab82a2186f9d035d2ddcee0444452de781e829b911a9efcbf2c

SHA512
b218d9f28ded2c32f6ede97e3e8683a68b76e4eaeb8aa32da0ac92ea98f0baf49af36ff1b95c0ca30a1f4ff5a99f32cb688070facce360f0b92473a1f2a82136

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
memory/4388-26-0x0000000073E90000-0x000000007457E000-memory.dmp

Filesize
6.9MB

Download
memory/4388-19-0x0000000005F00000-0x0000000006000000-memory.dmp

Filesize
1024KB

Download
memory/4388-18-0x0000000073E90000-0x000000007457E000-memory.dmp

Filesize
6.9MB

Download
memory/4692-20-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4692-25-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4692-31-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4692-28-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/4692-27-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4940-6-0x0000000004A50000-0x0000000004A5A000-memory.dmp

Filesize
40KB

Download
memory/4940-4-0x0000000004AE0000-0x0000000004B72000-memory.dmp

Filesize
584KB

Download
memory/4940-3-0x0000000004F40000-0x000000000543E000-memory.dmp

Filesize
5.0MB

Download
memory/4940-2-0x0000000004940000-0x00000000049DC000-memory.dmp

Filesize
624KB

Download
memory/4940-0-0x0000000000120000-0x000000000015C000-memory.dmp

Filesize
240KB

Download
memory/4940-5-0x0000000004D60000-0x0000000004D70000-memory.dmp

Filesize
64KB

Download
memory/4940-1-0x0000000073E90000-0x000000007457E000-memory.dmp

Filesize
6.9MB

Download
memory/4940-7-0x0000000004C40000-0x0000000004C6C000-memory.dmp

Filesize
176KB

Download
memory/4940-14-0x0000000073E90000-0x000000007457E000-memory.dmp

Filesize
6.9MB

Download
memory/4940-8-0x0000000004C90000-0x0000000004CAA000-memory.dmp

Filesize
104KB

Download