xworm | 97cb37e235dfbc41b6a4718ca4ffeb61e36ce9ba6cd329fd5da75cc8cc12df29

Analysis

max time kernel
150s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260630-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260630-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
06/07/2026, 12:35

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General

Target
COTIZACIONGAMATRACTOR.vbs
Size 1.2MB
Sample260706-pskajaa17k
SHA256 97cb37e235dfbc41b6a4718ca4ffeb61e36ce9ba6cd329fd5da75cc8cc12df29
MD5 a543f03ad8afc6b428978585dbdfa6c2
SHA1 566334a34283c783d5225d326c1925a686ae7f65
SHA512 cdd280feee9dfaf7256621d875459eb1029993827bce2964bf462ee5a4a05342080c4932ecba19174053f187db00742508961c80eedad62202e49c5c48d30d21
SSDEEP 192:IX6TAhUe2A9HUQUSiI6yiQJ0406jJF2Hiyk5MhnaINIcLTvzS6mG53CxYjFH4a6H:MJ7xX2V9DCC8QM
TLSH
T1FA55823972C41175E72E106DC8E14F4026AD6A21BB2D72F43B134B760A37BDF1EB2A95
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution xworm persistence rat trojan

Malware Config

Signatures

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

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1584-24-0x0000000000400000-0x000000000041C000-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	2832	4092	powershell.exe	89

Badlisted process makes network request 2 IoCs

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

flow	pid	Process
2	2832	powershell.exe
3	2832	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Winrar32.lnk	MSBuild.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Winrar32.lnk	MSBuild.exe

Executes dropped EXE 2 IoCs

pid	Process
4780	Winrar32.exe
4956	Winrar32.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-1-5-21-1749168396-1890032557-311772428-1000\Software\Microsoft\Windows\CurrentVersion\Run\Winrar32 = "C:\\Users\\Admin\\AppData\\Roaming\\\\WindowsUpdate\\Winrar\\Winrar32.exe"	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2832 set thread context of 1584	2832	powershell.exe	96

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2832	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Winrar32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Winrar32.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe
2832	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeDebugPrivilege	1584	MSBuild.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1804	conhost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1804 wrote to memory of 6140	1804	conhost.exe	94
PID 2832 wrote to memory of 2348	2832	powershell.exe	95
PID 2832 wrote to memory of 1584	2832	powershell.exe	96
PID 2832 wrote to memory of 1584	2832	powershell.exe	96
PID 2832 wrote to memory of 1584	2832	powershell.exe	96
PID 2832 wrote to memory of 1584	2832	powershell.exe	96
PID 2832 wrote to memory of 1584	2832	powershell.exe	96

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\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\COTIZACIONGAMATRACTOR.vbs"
1⤵
PID:2760

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -NoProfile -Command "Invoke-Expression $env:ruggedizing"
1⤵
- Process spawned unexpected child process
- Badlisted process makes network request
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2832
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:2348
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1584

C:\Windows\System32\conhost.exe
conhost.exe
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe
  2⤵
  PID:6140

C:\Users\Admin\AppData\Roaming\WindowsUpdate\Winrar\Winrar32.exe
C:\Users\Admin\AppData\Roaming\\WindowsUpdate\Winrar\Winrar32.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4780

C:\Users\Admin\AppData\Roaming\WindowsUpdate\Winrar\Winrar32.exe
C:\Users\Admin\AppData\Roaming\WindowsUpdate\Winrar\Winrar32.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4956

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

__PSScriptPolicyTest_3yljadlv.yvz.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3yljadlv.yvz.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

Winrar32.exe

Path C:\Users\Admin\AppData\Roaming\WindowsUpdate\Winrar\Winrar32.exe
Size 249KB
SHA256 151d0125c20cdde578d02de3f2a56eb904870a887bb7f1c59bf61471da231916
MD5 f8e68d6abe411ce0c71d6b8c1c1b9048
SHA1 77360aa532c299f636f424a2866016ee6bd5c09b
SHA512 3e6c59395c8c5f07d39db829aa335420ffe426fb9a4ab831cfe1273e803afd5f91912ee341e01b4e108b298349bdeea9e7e52874b05fa1723ebc408be896b650
SSDEEP 3072:6DEKKwBWmSEoRooC7GvORoQYiY35e8w2XpFU4rwOe+ZbZEFf02RFivFuv4GuhK:UHK2W0u1tvORstRXfM102bicw4
TLSH
T103446A01A7EC4615F6FF1A78B8B015158B76F867E866E35E388C61AC1F73740EA60363
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1584-24-0x0000000000400000-0x000000000041C000-memory.dmp

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memory/1584-38-0x0000000007C30000-0x0000000007CC2000-memory.dmp

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memory/1584-29-0x0000000006070000-0x000000000662A000-memory.dmp

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memory/1584-28-0x0000000005A40000-0x0000000005AA6000-memory.dmp

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memory/1584-27-0x00000000059A0000-0x0000000005A3C000-memory.dmp

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memory/2832-12-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-23-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-14-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-15-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-16-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-17-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-18-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-19-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-20-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-21-0x000001C3EE5B0000-0x000001C3EE664000-memory.dmp

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memory/2832-22-0x000001C3EE660000-0x000001C3EE66A000-memory.dmp

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memory/2832-13-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-0-0x00007FFBC31FF000-0x00007FFBC3200000-memory.dmp

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memory/2832-26-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-11-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-9-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-8-0x000001C3EE550000-0x000001C3EE572000-memory.dmp

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memory/2832-7-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/2832-1-0x00007FFBC3070000-0x00007FFBC3A14000-memory.dmp

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memory/4780-34-0x0000000004B80000-0x0000000004B9A000-memory.dmp

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memory/4780-35-0x0000000004D60000-0x0000000004EBA000-memory.dmp

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memory/4780-33-0x0000000000240000-0x0000000000280000-memory.dmp

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