xworm | 474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b

Resubmissions

04/03/2025, 01:15

250304-bmlphsvqy4 10

03/03/2025, 23:00

250303-2zbcessthy 10

Analysis

max time kernel
18s
max time network
20s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250218-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250218-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
04/03/2025, 01:15

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General

Target

XClient.exe
Size

78KB
MD5

a25ac87d1fea176e553d1892811b8c8d
SHA1

9b624bebe8d344209f6c3d4fa160becb9a3e11dc
SHA256

474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b
SHA512

7a137d4ccc1766351f2ea1a20f4866491b36edaff4902c54d5edf1b69fe22fcae200a14a8d779fbb439f190bd070e91e2bdcbd7b7d2b508901167586a4b31db6
SSDEEP

1536:MeQgyB1wb3whRLC7CkbPOOsexl6FdyOGL8jRBYb:Bp61wbKkbPumOGL8jRBY

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

37.114.39.24:7000

Attributes

Install_directory
%AppData%
install_file
winxd9.exe
telegram
https://api.telegram.org/bot7574778549:AAEqgXDQvR3Aj3QmQtNrJtln4Nkd7sNBWVc/sendMessage?chat_id=6855762756

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral3/memory/4220-1-0x00000000005C0000-0x00000000005DA000-memory.dmp	family_xworm
behavioral3/files/0x0007000000027f09-73.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
888	powershell.exe
1528	powershell.exe
3344	powershell.exe
4256	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-1-5-21-556327730-4249790997-552795783-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winxd9.lnk	XClient.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winxd9.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-1-5-21-556327730-4249790997-552795783-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winxd9 = "C:\\Users\\Admin\\AppData\\Roaming\\winxd9.exe"	XClient.exe

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
3300	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
888	powershell.exe
888	powershell.exe
1528	powershell.exe
1528	powershell.exe
3344	powershell.exe
3344	powershell.exe
4256	powershell.exe
4256	powershell.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4220	XClient.exe
Token: SeDebugPrivilege	888	powershell.exe
Token: SeIncreaseQuotaPrivilege	888	powershell.exe
Token: SeSecurityPrivilege	888	powershell.exe
Token: SeTakeOwnershipPrivilege	888	powershell.exe
Token: SeLoadDriverPrivilege	888	powershell.exe
Token: SeSystemProfilePrivilege	888	powershell.exe
Token: SeSystemtimePrivilege	888	powershell.exe
Token: SeProfSingleProcessPrivilege	888	powershell.exe
Token: SeIncBasePriorityPrivilege	888	powershell.exe
Token: SeCreatePagefilePrivilege	888	powershell.exe
Token: SeBackupPrivilege	888	powershell.exe
Token: SeRestorePrivilege	888	powershell.exe
Token: SeShutdownPrivilege	888	powershell.exe
Token: SeDebugPrivilege	888	powershell.exe
Token: SeSystemEnvironmentPrivilege	888	powershell.exe
Token: SeRemoteShutdownPrivilege	888	powershell.exe
Token: SeUndockPrivilege	888	powershell.exe
Token: SeManageVolumePrivilege	888	powershell.exe
Token: 33	888	powershell.exe
Token: 34	888	powershell.exe
Token: 35	888	powershell.exe
Token: 36	888	powershell.exe
Token: SeDebugPrivilege	1528	powershell.exe
Token: SeIncreaseQuotaPrivilege	1528	powershell.exe
Token: SeSecurityPrivilege	1528	powershell.exe
Token: SeTakeOwnershipPrivilege	1528	powershell.exe
Token: SeLoadDriverPrivilege	1528	powershell.exe
Token: SeSystemProfilePrivilege	1528	powershell.exe
Token: SeSystemtimePrivilege	1528	powershell.exe
Token: SeProfSingleProcessPrivilege	1528	powershell.exe
Token: SeIncBasePriorityPrivilege	1528	powershell.exe
Token: SeCreatePagefilePrivilege	1528	powershell.exe
Token: SeBackupPrivilege	1528	powershell.exe
Token: SeRestorePrivilege	1528	powershell.exe
Token: SeShutdownPrivilege	1528	powershell.exe
Token: SeDebugPrivilege	1528	powershell.exe
Token: SeSystemEnvironmentPrivilege	1528	powershell.exe
Token: SeRemoteShutdownPrivilege	1528	powershell.exe
Token: SeUndockPrivilege	1528	powershell.exe
Token: SeManageVolumePrivilege	1528	powershell.exe
Token: 33	1528	powershell.exe
Token: 34	1528	powershell.exe
Token: 35	1528	powershell.exe
Token: 36	1528	powershell.exe
Token: SeDebugPrivilege	3344	powershell.exe
Token: SeIncreaseQuotaPrivilege	3344	powershell.exe
Token: SeSecurityPrivilege	3344	powershell.exe
Token: SeTakeOwnershipPrivilege	3344	powershell.exe
Token: SeLoadDriverPrivilege	3344	powershell.exe
Token: SeSystemProfilePrivilege	3344	powershell.exe
Token: SeSystemtimePrivilege	3344	powershell.exe
Token: SeProfSingleProcessPrivilege	3344	powershell.exe
Token: SeIncBasePriorityPrivilege	3344	powershell.exe
Token: SeCreatePagefilePrivilege	3344	powershell.exe
Token: SeBackupPrivilege	3344	powershell.exe
Token: SeRestorePrivilege	3344	powershell.exe
Token: SeShutdownPrivilege	3344	powershell.exe
Token: SeDebugPrivilege	3344	powershell.exe
Token: SeSystemEnvironmentPrivilege	3344	powershell.exe
Token: SeRemoteShutdownPrivilege	3344	powershell.exe
Token: SeUndockPrivilege	3344	powershell.exe
Token: SeManageVolumePrivilege	3344	powershell.exe
Token: 33	3344	powershell.exe

Suspicious use of FindShellTrayWindow 23 IoCs

pid	Process
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe

Suspicious use of SendNotifyMessage 23 IoCs

pid	Process
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe
4832	taskmgr.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4220 wrote to memory of 888	4220	XClient.exe	80
PID 4220 wrote to memory of 888	4220	XClient.exe	80
PID 4220 wrote to memory of 1528	4220	XClient.exe	83
PID 4220 wrote to memory of 1528	4220	XClient.exe	83
PID 4220 wrote to memory of 3344	4220	XClient.exe	85
PID 4220 wrote to memory of 3344	4220	XClient.exe	85
PID 4220 wrote to memory of 4256	4220	XClient.exe	87
PID 4220 wrote to memory of 4256	4220	XClient.exe	87
PID 4220 wrote to memory of 3300	4220	XClient.exe	91
PID 4220 wrote to memory of 3300	4220	XClient.exe	91

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:4220
- 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:888
- 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:1528
- 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\winxd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3344
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'winxd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4256
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "winxd9" /tr "C:\Users\Admin\AppData\Roaming\winxd9.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3300

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4832

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

Exfiltration

Impact

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Downloads

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

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
c67441dfa09f61bca500bb43407c56b8

SHA1
5a56cf7cbeb48c109e2128c31b681fac3959157b

SHA256
63082da456c124d0bc516d2161d1613db5f3008d903e4066d2c7b4e90b435f33

SHA512
325de8b718b3a01df05e20e028c5882240e5fd2e96c771361b776312923ff178f27494a1f5249bf6d7365a99155eb8735a51366e85597008e6a10462e63ee0e8

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

Filesize
1KB

MD5
ce9ebbf09cb7ff19e26c48150ebb84b0

SHA1
c970bbeae6dd927f38bf261eb16700c6d5f3f3aa

SHA256
ce290c73b9bc43330208a5ffbd96cec25de1ee665a8adbdcc76b13997a27ae38

SHA512
48ab245cddf078ec99d96f950ae32e73ff3d0029dff49e209394c17e3f566be2b61e2018775f56f4442e88a81c6e0235741cd4d058c37519a8dd23301dcbd702

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

Filesize
1KB

MD5
38ca1a109e14171bd3a3a8a1cec17399

SHA1
1564aeca3bbf2eaacd775e7026b1e4f8942d9118

SHA256
ba0f9fc15a3eec415f1d9f9f9b9638c60f24aecc14062493b20cdb98e1dd0ea1

SHA512
cada941969630d3baef3003e2bf46cff50a1fc242616292d275006c4fb8b641848e4b2f9666189cbd2de2b20fc7c603b5fcbe394b925ccd055bd1e02abe36561

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c23fsygk.l4t.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winxd9.lnk

Filesize
766B

MD5
f3621a5d93a0a52ad93dc8a22c363ba5

SHA1
848fd141b4753737058b0660846b38241c5b0608

SHA256
57da25c5b26af2821cf1ee120d04e4917ccb3eb8af50d636996ce2389139fc87

SHA512
40709b698ea1ea9c2300cb79a85155c3e12f70b8485cdd05eac84f6b9c1c8a1603b6121aa95a0f2d12e97c01029d1b692768dc43cd42a9dc04d2685ff49baa3a

Download Submit
C:\Users\Admin\AppData\Roaming\winxd9.exe

Filesize
78KB

MD5
a25ac87d1fea176e553d1892811b8c8d

SHA1
9b624bebe8d344209f6c3d4fa160becb9a3e11dc

SHA256
474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b

SHA512
7a137d4ccc1766351f2ea1a20f4866491b36edaff4902c54d5edf1b69fe22fcae200a14a8d779fbb439f190bd070e91e2bdcbd7b7d2b508901167586a4b31db6

Download Submit
memory/888-14-0x00007FF91C790000-0x00007FF91D252000-memory.dmp

Filesize
10.8MB

Download
memory/888-19-0x00007FF91C790000-0x00007FF91D252000-memory.dmp

Filesize
10.8MB

Download
memory/888-15-0x00007FF91C790000-0x00007FF91D252000-memory.dmp

Filesize
10.8MB

Download
memory/888-13-0x00007FF91C790000-0x00007FF91D252000-memory.dmp

Filesize
10.8MB

Download
memory/888-12-0x00007FF91C790000-0x00007FF91D252000-memory.dmp

Filesize
10.8MB

Download
memory/888-2-0x000001B09AC30000-0x000001B09AC52000-memory.dmp

Filesize
136KB

Download
memory/888-16-0x00007FF91C790000-0x00007FF91D252000-memory.dmp

Filesize
10.8MB

Download
memory/4220-71-0x00007FF91C790000-0x00007FF91D252000-memory.dmp

Filesize
10.8MB

Download
memory/4220-0-0x00007FF91C793000-0x00007FF91C795000-memory.dmp

Filesize
8KB

Download
memory/4220-1-0x00000000005C0000-0x00000000005DA000-memory.dmp

Filesize
104KB

Download
memory/4832-55-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download
memory/4832-66-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download
memory/4832-65-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download
memory/4832-63-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download
memory/4832-62-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download
memory/4832-61-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download
memory/4832-60-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download
memory/4832-64-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download
memory/4832-56-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download
memory/4832-54-0x000001D9B9A30000-0x000001D9B9A31000-memory.dmp

Filesize
4KB

Download