xworm | 9ee2b4dfcae8b6e7681dc6691ffd4dcfb521d061188b805e4c09f4151bbb9674

Analysis

max time kernel
45s
max time network
37s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
04/03/2025, 17:10

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General

Target

XClient.exe
Size

67KB
MD5

51c54850a03f6858fe61e195110f33d9
SHA1

6e804a790b2b9a63f02d756a963fb76472d789cf
SHA256

9ee2b4dfcae8b6e7681dc6691ffd4dcfb521d061188b805e4c09f4151bbb9674
SHA512

642e969c5dc7165cf63dda7423ea42042878949909e860a73fabeb1bd9b2083fe026a705eb94be99fc68f691f4ca0a3ed820037afb2a35323e628b52941ec16c
SSDEEP

1536:60UL9WC16LIK6u/VO2kbP8cnnSVzS06H3OCIDO495:HULOLXA2kbP8MO/C495

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
Sihost.exe
pastebin_url
https://pastebin.com/raw/hA5YVNf1

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4776-1-0x0000000000620000-0x0000000000638000-memory.dmp	family_xworm
behavioral1/files/0x0011000000023bc5-62.dat	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4496	powershell.exe
5008	powershell.exe
4996	powershell.exe
2096	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sihost.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sihost.lnk	XClient.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-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Sihost = "C:\\Users\\Admin\\AppData\\Roaming\\Sihost.exe"	XClient.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
29	pastebin.com
30	pastebin.com

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	taskmgr.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
2420	schtasks.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

pid	Process
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
2096	powershell.exe
2096	powershell.exe
248	taskmgr.exe
4496	powershell.exe
4496	powershell.exe
5008	powershell.exe
5008	powershell.exe
4996	powershell.exe
248	taskmgr.exe
4996	powershell.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	XClient.exe
Token: SeDebugPrivilege	248	taskmgr.exe
Token: SeSystemProfilePrivilege	248	taskmgr.exe
Token: SeCreateGlobalPrivilege	248	taskmgr.exe
Token: SeDebugPrivilege	2096	powershell.exe
Token: SeDebugPrivilege	4496	powershell.exe
Token: SeDebugPrivilege	5008	powershell.exe
Token: SeDebugPrivilege	4996	powershell.exe
Token: SeDebugPrivilege	4776	XClient.exe

Suspicious use of FindShellTrayWindow 57 IoCs

pid	Process
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe

Suspicious use of SendNotifyMessage 57 IoCs

pid	Process
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe
248	taskmgr.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 2096	4776	XClient.exe	91
PID 4776 wrote to memory of 2096	4776	XClient.exe	91
PID 4776 wrote to memory of 4496	4776	XClient.exe	93
PID 4776 wrote to memory of 4496	4776	XClient.exe	93
PID 4776 wrote to memory of 5008	4776	XClient.exe	95
PID 4776 wrote to memory of 5008	4776	XClient.exe	95
PID 4776 wrote to memory of 4996	4776	XClient.exe	97
PID 4776 wrote to memory of 4996	4776	XClient.exe	97
PID 4776 wrote to memory of 2420	4776	XClient.exe	99
PID 4776 wrote to memory of 2420	4776	XClient.exe	99

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:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2096
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4496
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Sihost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5008
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Sihost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4996
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Sihost" /tr "C:\Users\Admin\AppData\Roaming\Sihost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2420

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:248

Network

MITRE ATT&CK Enterprise v15

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

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
0e244c50da4e580dc275de70a263b2cf

SHA1
3126262dddf29251455a46b075f4bec6cc5c3a0f

SHA256
7b464d9a82c6d793a1d564309291217281e34eade01f05a1d37d5e3482fc5d69

SHA512
d21d483d3d17b253dcd41b703a16c315500f94edc376579577576c43324a47c79014dc8aecd47d3dc5ca2683dcd16996214cc16855fd00dbbc3102c6b8eea9a1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
a7cc007980e419d553568a106210549a

SHA1
c03099706b75071f36c3962fcc60a22f197711e0

SHA256
a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165

SHA512
b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wj2yaoli.tgt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sihost.lnk

Filesize
766B

MD5
127a8c2533a20feb0d01e64ee022083f

SHA1
144e5d1cd8bd6680aa32b3857f0d64a5019b66fd

SHA256
3b4095644b26f2aef3451b723b91f4aca868d02aa71e4ee0a9c0491b45744e7f

SHA512
71c263625b9ff301951adc74fd7c3dcaa8f811cc176c9c6db5d4cb6334e4acf1a4701e71ca326fbcd24a1e6eeaf48fa1bf58ee8a1017a2203d873b31b39b335c

Download Submit
C:\Users\Admin\AppData\Roaming\Sihost.exe

Filesize
67KB

MD5
51c54850a03f6858fe61e195110f33d9

SHA1
6e804a790b2b9a63f02d756a963fb76472d789cf

SHA256
9ee2b4dfcae8b6e7681dc6691ffd4dcfb521d061188b805e4c09f4151bbb9674

SHA512
642e969c5dc7165cf63dda7423ea42042878949909e860a73fabeb1bd9b2083fe026a705eb94be99fc68f691f4ca0a3ed820037afb2a35323e628b52941ec16c

Download Submit
memory/248-9-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/248-14-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/248-10-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/248-11-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/248-8-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/248-3-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/248-13-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/248-12-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/248-2-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/248-4-0x000002C7A0A70000-0x000002C7A0A71000-memory.dmp

Filesize
4KB

Download
memory/2096-20-0x0000018BE2700000-0x0000018BE2722000-memory.dmp

Filesize
136KB

Download
memory/4776-0-0x00007FFE28CD3000-0x00007FFE28CD5000-memory.dmp

Filesize
8KB

Download
memory/4776-1-0x0000000000620000-0x0000000000638000-memory.dmp

Filesize
96KB

Download
memory/4776-65-0x00007FFE28CD0000-0x00007FFE29791000-memory.dmp

Filesize
10.8MB

Download
memory/4776-66-0x00007FFE28CD0000-0x00007FFE29791000-memory.dmp

Filesize
10.8MB

Download
memory/4776-67-0x000000001BE90000-0x000000001BE9C000-memory.dmp

Filesize
48KB

Download