xworm | 427a4cc7d184449eb70a2c75462b3a142ab718b9d4d22d3f94b8c5923c164b35

Analysis

user interaction
yes
max time kernel
395s
max time network
901s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
16/09/2026, 16:55

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General

Target
XClient.exe
Size 30KB
Sample260916-vfas8adn31
SHA256 427a4cc7d184449eb70a2c75462b3a142ab718b9d4d22d3f94b8c5923c164b35
MD5 0a79de74fa4bda262e7d74b8aca27984
SHA1 bbb6b4163511f81961a499bb1fe44d5575cbcb1b
SHA512 607887e4b1953fc28b68fa2b7acf79bddb33ca0893c3c08f3a87a9308b1fb74a6a68e4964e290055f228977393fad308e801a0c1ba9374300e31ea3f4bf3686b
SSDEEP 768:yHZrtxekwo1YETDNAsbBFR9Rl9OqhCb4:WZr6AAsFFR9Rl9OqAc
TLSH
T1FBD24C0877E58327C6EF2FF229B291010375D907D923EF5E4CD885A76F67A8142003EA
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

bootkit defense_evasion discovery xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

188.52.56.123:5000

Mutex

A9qFI6duEDgQB152

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 1 IoCs

resource	yara_rule
behavioral2/memory/1336-1-0x0000000000490000-0x000000000049E000-memory.dmp	family_xworm

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Active Setup\Installed Components	Explorer.EXE

Disables Task Manager via registry modification
defense_evasion

Executes dropped EXE 6 IoCs

pid	Process
2316	lwqmap.exe
4216	yckhxo.exe
4928	cpdxvz.exe
2824	dkutli.exe
2912	nobsim.exe
5368	ianssf.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysWinHost = "C:\\Users\\Admin\\AppData\\Roaming\\sys_win_host.exe"	yckhxo.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysWinHost = "C:\\Users\\Admin\\AppData\\Roaming\\sys_win_host.exe"	nobsim.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysWinHost = "C:\\Users\\Admin\\AppData\\Roaming\\sys_win_host.exe"	lwqmap.exe

Contacts third-party web service commonly abused for C2 1 TTPs 4 IoCs

Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

Web Service

T1102

flow	ioc
21	discord.com
22	discord.com
2	discord.com
10	discord.com

Looks up external IP address via web service 1 TTPs 7 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
3	api.ipify.org
5	api.ipify.org
6	ipapi.co
8	api.ipify.org
9	ipapi.co
2	api.ipify.org
2	ipapi.co

Writes to the Master Boot Record (MBR) 1 TTPs 6 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	dkutli.exe
File opened for modification	\??\PhysicalDrive0	nobsim.exe
File opened for modification	\??\PhysicalDrive0	ianssf.exe
File opened for modification	\??\PhysicalDrive0	lwqmap.exe
File opened for modification	\??\PhysicalDrive0	yckhxo.exe
File opened for modification	\??\PhysicalDrive0	cpdxvz.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-4154726816-2055034831-2297277433-1000\{72BA453D-37F4-49C6-A80F-ECB0D13E78D5}	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe
2912	nobsim.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	1336	XClient.exe
Token: SeDebugPrivilege	2316	lwqmap.exe
Token: SeDebugPrivilege	4216	yckhxo.exe
Token: 33	1928	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1928	AUDIODG.EXE
Token: SeDebugPrivilege	2912	nobsim.exe
Token: SeShutdownPrivilege	4316	Explorer.EXE
Token: SeCreatePagefilePrivilege	4316	Explorer.EXE
Token: SeShutdownPrivilege	4316	Explorer.EXE
Token: SeCreatePagefilePrivilege	4316	Explorer.EXE

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2912	nobsim.exe
2316	lwqmap.exe
4216	yckhxo.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1336 wrote to memory of 2316	1336	XClient.exe	90
PID 1336 wrote to memory of 4216	1336	XClient.exe	91
PID 1336 wrote to memory of 4928	1336	XClient.exe	92
PID 1336 wrote to memory of 2824	1336	XClient.exe	93
PID 1336 wrote to memory of 2912	1336	XClient.exe	95
PID 2352 wrote to memory of 4316	2352	userinit.exe	97
PID 1336 wrote to memory of 5368	1336	XClient.exe	98

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Users\Admin\AppData\Local\Temp\lwqmap.exe
  "C:\Users\Admin\AppData\Local\Temp\lwqmap.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:2316
- C:\Users\Admin\AppData\Local\Temp\yckhxo.exe
  "C:\Users\Admin\AppData\Local\Temp\yckhxo.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:4216
- C:\Users\Admin\AppData\Local\Temp\cpdxvz.exe
  "C:\Users\Admin\AppData\Local\Temp\cpdxvz.exe"
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  PID:4928
- C:\Users\Admin\AppData\Local\Temp\dkutli.exe
  "C:\Users\Admin\AppData\Local\Temp\dkutli.exe"
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  PID:2824
- C:\Users\Admin\AppData\Local\Temp\nobsim.exe
  "C:\Users\Admin\AppData\Local\Temp\nobsim.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:2912
- C:\Users\Admin\AppData\Local\Temp\ianssf.exe
  "C:\Users\Admin\AppData\Local\Temp\ianssf.exe"
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  PID:5368

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x00000000000004FC 0x00000000000004F0
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1928

C:\Windows\system32\userinit.exe
C:\Windows\system32\userinit.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Windows\Explorer.EXE
  C:\Windows\Explorer.EXE
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  PID:4316

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:700

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:1904
- C:\Windows\explorer.exe
  explorer.exe /LOADSAVEDWINDOWS
  2⤵
  PID:3852

C:\Windows\System32\SecurityHealthHost.exe
\\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
1⤵
PID:1332

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

cpdxvz.exe

Path C:\Users\Admin\AppData\Local\Temp\cpdxvz.exe
Size 802KB
SHA256 68a2b9da01ab0d8999c490f680d3e3fa7f12c0ec80a5c1ecae51af6047663cf4
MD5 d0d0328089b837492585e0da68731986
SHA1 7a654dc8e8b62bcecb6b4ea6d1bd561f153a672e
SHA512 0eaf20de487d1831901ed13bec53aa2bb60be4e0be90899cc6fdf88868b5c485d7e180644f508c8668e42654170fadf2df50b1ebc41a0e0f97e7370f75ee05ab
SSDEEP 12288:zX5Ftmfz8+5HPG7kZFJXHByzhsR3roZeepwU9LNC:z5F41PVPXHByzhqepVLNC
TLSH
T17805384B99558F4CDC2243F75442C8B21D436D8868B486A625FBFE2FB3B609768C7C47
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

lwqmap.exe

Path C:\Users\Admin\AppData\Local\Temp\lwqmap.exe
Size 4.4MB
SHA256 fc1d570bcc04951b6b4dc2767d73469f67ef701eadcecdd2522915aef50c7169
MD5 cd279dcc8fc14d390dd0df404def40e8
SHA1 780c6ed1d62f55dfed413628e0113d448968f1f9
SHA512 be061ca9855777f30a1083650daa72c6229b0f6efd4646dd1f5299346a4765b722e27e2de857ef4a34db02c6a4e21232a33ad1a495e88614cba465fa74b05b3e
SSDEEP 24576:xduDmDs2fTgsVFL5lI+aceov+cl7+JVdf8zdhQR9SNUaEDkRZuWKOFngdq7n3Hz1:xQmDsKgsVFLLkKudf19DpObn3nFkW7
TLSH
T1D5264A3439EA5029B2B3EF695FE4B49ADA6FB3733B07645D10A1038A4723A41DDC163D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1336-1-0x0000000000490000-0x000000000049E000-memory.dmp

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memory/1336-2-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/1336-3-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/1336-4-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/1336-5-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/1336-6-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/1336-0-0x00007FFB06E6F000-0x00007FFB06E70000-memory.dmp

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memory/1336-63-0x000000001CDA0000-0x000000001CDAA000-memory.dmp

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memory/2316-15-0x0000000000870000-0x0000000000CDA000-memory.dmp

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memory/2316-18-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/2316-19-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/2316-20-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/2316-21-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/2316-17-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/2316-16-0x00007FFB06CE0000-0x00007FFB07684000-memory.dmp

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memory/4928-38-0x0000025E79350000-0x0000025E7941E000-memory.dmp

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