castlerat | f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20250619-en
resource tags

arch:x64arch:x86image:win10v2004-20250619-enlocale:en-usos:windows10-2004-x64system
submitted
18/09/2025, 13:18

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General

Target
f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe
Size 12.4MB
Sample250918-qj9pha1nz4
SHA256 f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af
MD5 8e57620fc89bac21cdee0b40219b8341
SHA1 c8c27eb034e01bc4b3d85571556dd178bc30ffa6
SHA512 9fe97b647ad7524cfe7e18156178f7a0f6bf07ce28d3a1e978d8f905e64d2b51078398034c6f7822e154f1955193f7899a1f7dd076c6034360f88257918bfb30
SSDEEP 98304:MRkyhrOHMsfh0V2Qcni6u4+PfyPz4ep/LEdQI:Mnhr/spCXciPf4zz
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tag_150 apt castlerat persistence trojan

Malware Config

Extracted

Family

castlerat

5.35.44.176
77.238.241.203

Signatures

CastleRAT
CastleRAT is a trojan available in both Python and C variants.
trojan castlerat
Castlerat family
castlerat

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4512	powershell.exe
4512	powershell.exe
5012	f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe
5012	f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe
4908	powershell.exe
4908	powershell.exe
2484	powershell.exe
2484	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4512	powershell.exe
Token: SeDebugPrivilege	4908	powershell.exe
Token: SeDebugPrivilege	2484	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5012	f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5012 wrote to memory of 4512	5012	f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe	84
PID 5012 wrote to memory of 4512	5012	f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe	84
PID 5012 wrote to memory of 4908	5012	f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe	95
PID 5012 wrote to memory of 4908	5012	f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe	95
PID 5012 wrote to memory of 2484	5012	f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe	98
PID 5012 wrote to memory of 2484	5012	f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe	98

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe
"C:\Users\Admin\AppData\Local\Temp\f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4512
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4908
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2484

C:\Users\Admin\AppData\Local\Temp\f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe
C:\Users\Admin\AppData\Local\Temp\f2e36ccfeb225009ae229a2be905deff587c471b8d47690dc7f5111e1bc611af.exe
1⤵
PID:4820

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 3KB
SHA256 36b51e575810b6af6fc5e778ce0f228bc7797cd3224839b00829ca166fa13f9a
MD5 3f01549ee3e4c18244797530b588dad9
SHA1 3e87863fc06995fe4b741357c68931221d6cc0b9
SHA512 73843215228865a4186ac3709bf2896f0f68da0ba3601cc20226203dd429a2ad9817b904a45f6b0456b8be68deebf3b011742a923ce4a77c0c6f3a155522ab50
MD5 SHA1 SHA512

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StartupProfileData-Interactive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Size 2KB
SHA256 23c35f4fcd9f110592d3ff34490e261efbcf6c73aa753887479197fd15289457
MD5 e4de99c1795fd54aa87da05fa39c199c
SHA1 dfaaac2de1490fae01104f0a6853a9d8fe39a9d7
SHA512 796b6d3f7b9a336bc347eae8fb11cdbf2ae2ad73aae58de79e096c3ad57bd45eadddae445a95c4ee7452554568d7ab55b0307972b24e2ff75eae4a098ba9e926
MD5 SHA1 SHA512

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StartupProfileData-Interactive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
Size 2KB
SHA256 97fc7e96b11e38def801fb517a0e7ecd856b3b75bc791946f17c009b3d940a9a
MD5 71e5cc23e0c80d26177bcede5a82a309
SHA1 8d2aed970f7b588acdd3acef4a23efa29f00799d
SHA512 b7a49096eeb4449b4f8fe016a6b9bbd6058056b6057f2aeb7b88c4a7a876c95dae39f0a53ee2a9f6e81d467b819049931bc05fbb229c937d61a0dc6b4ac2a8a9
MD5 SHA1 SHA512

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__PSScriptPolicyTest_snh32swm.uli.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_snh32swm.uli.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/4512-8-0x000001EFF3C60000-0x000001EFF3C70000-memory.dmp

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memory/4512-9-0x000001EFF3B70000-0x000001EFF3B92000-memory.dmp

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memory/4512-19-0x000001EFF3BF0000-0x000001EFF3C34000-memory.dmp

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memory/4512-20-0x000001EFF6DA0000-0x000001EFF6E16000-memory.dmp

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memory/4512-21-0x000001EFF3C60000-0x000001EFF3C70000-memory.dmp

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memory/4820-59-0x0000000000400000-0x0000000001097000-memory.dmp

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memory/5012-26-0x0000000140000000-0x0000000140184000-memory.dmp

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memory/5012-25-0x0000000140000000-0x0000000140184000-memory.dmp

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memory/5012-30-0x0000000140000000-0x0000000140184000-memory.dmp

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memory/5012-33-0x00000000010E0000-0x00000000010E1000-memory.dmp

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memory/5012-34-0x0000000003740000-0x00000000038D3000-memory.dmp

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memory/5012-35-0x0000000000400000-0x0000000001097000-memory.dmp

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memory/5012-0-0x00000000010E0000-0x00000000010E1000-memory.dmp

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memory/5012-24-0x0000000140000000-0x0000000140184000-memory.dmp

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memory/5012-3-0x0000000140000000-0x0000000140184000-memory.dmp

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memory/5012-1-0x0000000003740000-0x00000000038D3000-memory.dmp

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