xworm | b6a12153debaab5e97179235e3f242aeed695db8a4a3f78f559f31bc6a0616c2

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
30/09/2026, 12:23

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General

Target
HF1W1Z5K.js
Size 2.5MB
Sample260930-pkgvfavwdx
SHA256 b6a12153debaab5e97179235e3f242aeed695db8a4a3f78f559f31bc6a0616c2
MD5 a95bedb18b9c2d7121b7763c4e7fcac8
SHA1 ffb94060dc16d00cfe958bebb4212e3cfa99d829
SHA512 e28b2b63a4bdb2e99fb90a1a9a7347ec89e17c0438b6adcec3868f27912154a476ea0aa88a1894d4121950fd1b6c7e6d159ec7c4533dfae00c652bf3c2f17645
SSDEEP 1536:ZXOGuF2TsuDyH/na7NttOMHzo6YcD15UXl2UAmeFNIMHOxEw6+S/JTVSu+0u5DX8:D
TLSH
T183C528E016AF265A2057984A9032E111E0E3CFD7D5B289F1B997083B06DFCC5EE6B735
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution xworm persistence privilege_escalation rat trojan

Malware Config

Extracted

Family

xworm

Version

84.38.129.15:4545

Mutex

wpfrUQhvmQHmDAUY

Attributes

Install_directory
%AppData%
install_file
XWormClient.exe

aes.plain

Signatures

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

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/4776-11-0x0000000000400000-0x0000000000410000-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	552	5092	powershell.exe	90

Badlisted process makes network request 1 IoCs

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

flow	pid	Process
9	552	powershell.exe

Creates a file in the Startup directory 1 TTPs 2 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

persistence privilege_escalation

Registry Run Keys / Startup Folder

T1547.001

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

Executes dropped EXE 1 IoCs

pid	Process
4256	XWormClient.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-1-5-21-939655444-3071939294-1401108526-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XWormClient = "C:\\Users\\Admin\\AppData\\Roaming\\XWormClient.exe"	RegAsm.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
552	powershell.exe

Enumerates connected drives 3 TTPs 1 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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 552 set thread context of 4776	552	powershell.exe	94

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Reads the TCP/IP host and domain name from the registry 1 TTPs 4 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
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	RegAsm.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	XWormClient.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4776	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
552	powershell.exe
552	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	552	powershell.exe
Token: SeDebugPrivilege	4776	RegAsm.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 552 wrote to memory of 4776	552	powershell.exe	94
PID 552 wrote to memory of 4776	552	powershell.exe	94
PID 552 wrote to memory of 4776	552	powershell.exe	94
PID 552 wrote to memory of 4776	552	powershell.exe	94
PID 552 wrote to memory of 4776	552	powershell.exe	94

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\HF1W1Z5K.js
1⤵
- Reads the TCP/IP host and domain name from the registry
PID:4856

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -NoProfile -Command "$portions=$env:P1+$env:P2+$env:P3+$env:P4+$env:P5+$env:P6;$oestrogen=[Convert]::FromBase64String($portions);[AppDomain]::CurrentDomain.Load($oestrogen)|Out-Null;[Win32.RMP.Cls_XdCUrBzoik]::Met_XdCUrBzoiksn('Goyw5XlDsmf/I9yvRvYOplvdi44UCPErfiTgDXBFX5mOaQdNmn9+uYlQ3Rubf2iF+XvTh0wVgtrqe6Qdbfti5g==','','QygWMnxvMWDH4KDnLCMF34j9q5jfdX5eT1G8a6Uavsn3OP8b7qxiGTZLUXqDxZ2Y','TsOoLtuOhReoSZeCizcHT8W1n9HGzShPfHgh3Ui5uw8=','KD97RjEG0mXnT5FxTPLpintwbs0NJ95AiJ5xG2cjCY0=','','k1n6ZnlOYJT3kD1UIVdXbNZtcBHhIURzu9IhSKrWfTM=','','4iZu056KSpGo7qqX3SuxP3qpjCRHj0gcFko3pdK8eWE=','iimXV7fGIQ42l3P3ZfwbD1W0TWv6XY2OmAvEHZSuUvjIDpw0HNjRISiu9U8zHuxP','9QD20NKtLyOixuvbuRyG+c32yvhbt+LqEchX9qoFs0c=','JUNQreauCubSqoNuqq77EVHRq8lotvKaPshRexy1Wg4=','wuRx9d/s8e/mZ1VGVQuX0HhuavNdDJG1/m4gO+iOKSI=','','JisJXg4009orpho3Go6ysMH9pKgMc1juxZhbONRkes4=','2nTzuLegKb37BnJiSePnRtTUB07t7uLz4pRKvWS8ncc=','','','')"
1⤵
- Process spawned unexpected child process
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:552
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Creates a file in the Startup directory
  - Adds Run key to start application
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of AdjustPrivilegeToken
  PID:4776

C:\Users\Admin\AppData\Roaming\XWormClient.exe
C:\Users\Admin\AppData\Roaming\XWormClient.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4256

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

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

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_z1a35in0.fzc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_z1a35in0.fzc.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

XWormClient.exe

Path C:\Users\Admin\AppData\Roaming\XWormClient.exe
Size 63KB
SHA256 c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc
MD5 0d5df43af2916f47d00c1573797c1a13
SHA1 230ab5559e806574d26b4c20847c368ed55483b0
SHA512 f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2
SSDEEP 768:X8XcJiMjm2ieHlPyCsSuJbn8dBhFwlSMF6Iq8KSYDKbQ22qWqO8w1R:rYMaNylPYSAb8dBnsHsPDKbQBqTY
TLSH
T12F53E814A7E84316F6FB4B71AAF5C047993AB553AD65C35C248D438D0B223C4DA23BBB
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/552-14-0x000001AFD8B50000-0x000001AFD8C9E000-memory.dmp

Download

memory/552-7-0x000001AFD8B20000-0x000001AFD8B42000-memory.dmp

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memory/552-10-0x000001AFD8CF0000-0x000001AFD8D12000-memory.dmp

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memory/552-1-0x000001AFBC7B0000-0x000001AFBC7C0000-memory.dmp

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memory/552-0-0x000001AFBC7B0000-0x000001AFBC7C0000-memory.dmp

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memory/4256-25-0x00000000004D0000-0x00000000004E2000-memory.dmp

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memory/4776-11-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4776-15-0x0000000005510000-0x00000000055AC000-memory.dmp

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memory/4776-20-0x00000000063A0000-0x0000000006944000-memory.dmp

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memory/4776-21-0x0000000005ED0000-0x0000000005F62000-memory.dmp

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memory/4776-22-0x0000000005EA0000-0x0000000005EAA000-memory.dmp

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memory/4776-27-0x00000000071C0000-0x0000000007226000-memory.dmp

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