xworm | 282393aa38b758eb429d55acbfc2df1638741ee18eaa2fccf1ea638e396c1606

Analysis

max time kernel
18s
max time network
17s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
07/11/2024, 21:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

XClient.exe
Size

43KB
MD5

b5cc96820c23ae9241f31f69ae0f4bd1
SHA1

2b34b1d40aaee3ad827f2f52c607078331bfa5d0
SHA256

282393aa38b758eb429d55acbfc2df1638741ee18eaa2fccf1ea638e396c1606
SHA512

3a08f0fa346c5a3823154d549c997aad2932c34c4d367729c89802a06029ae8dcdba9b053b93ebb279505f3aa96cdfa0d1addccd13065959be4fcec4553c15b0
SSDEEP

768:dOWZMZifma/E0s5qYhA4J1QD8PReLOY9bdJ5Zua6GhOOw2joI:dRv/ruAApiP9bf5V6GsOnjoI

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

23.ip.gl.ply.gg:51353

<Xwormmm>:1

Mutex

BsBmfJJT3ix8SkJS

Attributes

Install_directory
%LocalAppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4400-1-0x0000000000E10000-0x0000000000E22000-memory.dmp	family_xworm
behavioral1/files/0x002d00000004517c-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
656	powershell.exe
1224	powershell.exe
2700	powershell.exe
4972	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-1-5-21-4152190078-1497776152-96910572-1000\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\svchost.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.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-1-5-21-4152190078-1497776152-96910572-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.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
1848	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
656	powershell.exe
656	powershell.exe
1224	powershell.exe
1224	powershell.exe
2700	powershell.exe
2700	powershell.exe
4972	powershell.exe
4972	powershell.exe
4432	taskmgr.exe
4432	taskmgr.exe
4400	XClient.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4400	XClient.exe
Token: SeDebugPrivilege	656	powershell.exe
Token: SeIncreaseQuotaPrivilege	656	powershell.exe
Token: SeSecurityPrivilege	656	powershell.exe
Token: SeTakeOwnershipPrivilege	656	powershell.exe
Token: SeLoadDriverPrivilege	656	powershell.exe
Token: SeSystemProfilePrivilege	656	powershell.exe
Token: SeSystemtimePrivilege	656	powershell.exe
Token: SeProfSingleProcessPrivilege	656	powershell.exe
Token: SeIncBasePriorityPrivilege	656	powershell.exe
Token: SeCreatePagefilePrivilege	656	powershell.exe
Token: SeBackupPrivilege	656	powershell.exe
Token: SeRestorePrivilege	656	powershell.exe
Token: SeShutdownPrivilege	656	powershell.exe
Token: SeDebugPrivilege	656	powershell.exe
Token: SeSystemEnvironmentPrivilege	656	powershell.exe
Token: SeRemoteShutdownPrivilege	656	powershell.exe
Token: SeUndockPrivilege	656	powershell.exe
Token: SeManageVolumePrivilege	656	powershell.exe
Token: 33	656	powershell.exe
Token: 34	656	powershell.exe
Token: 35	656	powershell.exe
Token: 36	656	powershell.exe
Token: SeDebugPrivilege	1224	powershell.exe
Token: SeIncreaseQuotaPrivilege	1224	powershell.exe
Token: SeSecurityPrivilege	1224	powershell.exe
Token: SeTakeOwnershipPrivilege	1224	powershell.exe
Token: SeLoadDriverPrivilege	1224	powershell.exe
Token: SeSystemProfilePrivilege	1224	powershell.exe
Token: SeSystemtimePrivilege	1224	powershell.exe
Token: SeProfSingleProcessPrivilege	1224	powershell.exe
Token: SeIncBasePriorityPrivilege	1224	powershell.exe
Token: SeCreatePagefilePrivilege	1224	powershell.exe
Token: SeBackupPrivilege	1224	powershell.exe
Token: SeRestorePrivilege	1224	powershell.exe
Token: SeShutdownPrivilege	1224	powershell.exe
Token: SeDebugPrivilege	1224	powershell.exe
Token: SeSystemEnvironmentPrivilege	1224	powershell.exe
Token: SeRemoteShutdownPrivilege	1224	powershell.exe
Token: SeUndockPrivilege	1224	powershell.exe
Token: SeManageVolumePrivilege	1224	powershell.exe
Token: 33	1224	powershell.exe
Token: 34	1224	powershell.exe
Token: 35	1224	powershell.exe
Token: 36	1224	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeIncreaseQuotaPrivilege	2700	powershell.exe
Token: SeSecurityPrivilege	2700	powershell.exe
Token: SeTakeOwnershipPrivilege	2700	powershell.exe
Token: SeLoadDriverPrivilege	2700	powershell.exe
Token: SeSystemProfilePrivilege	2700	powershell.exe
Token: SeSystemtimePrivilege	2700	powershell.exe
Token: SeProfSingleProcessPrivilege	2700	powershell.exe
Token: SeIncBasePriorityPrivilege	2700	powershell.exe
Token: SeCreatePagefilePrivilege	2700	powershell.exe
Token: SeBackupPrivilege	2700	powershell.exe
Token: SeRestorePrivilege	2700	powershell.exe
Token: SeShutdownPrivilege	2700	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeSystemEnvironmentPrivilege	2700	powershell.exe
Token: SeRemoteShutdownPrivilege	2700	powershell.exe
Token: SeUndockPrivilege	2700	powershell.exe
Token: SeManageVolumePrivilege	2700	powershell.exe
Token: 33	2700	powershell.exe

Suspicious use of FindShellTrayWindow 23 IoCs

pid	Process
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe

Suspicious use of SendNotifyMessage 22 IoCs

pid	Process
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe
4432	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4400	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4400 wrote to memory of 656	4400	XClient.exe	84
PID 4400 wrote to memory of 656	4400	XClient.exe	84
PID 4400 wrote to memory of 1224	4400	XClient.exe	89
PID 4400 wrote to memory of 1224	4400	XClient.exe	89
PID 4400 wrote to memory of 2700	4400	XClient.exe	93
PID 4400 wrote to memory of 2700	4400	XClient.exe	93
PID 4400 wrote to memory of 4972	4400	XClient.exe	95
PID 4400 wrote to memory of 4972	4400	XClient.exe	95
PID 4400 wrote to memory of 1848	4400	XClient.exe	98
PID 4400 wrote to memory of 1848	4400	XClient.exe	98

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4400
- 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:656
- 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:1224
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2700
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4972
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1848

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:4432

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

Replay Monitor

Loading Replay Monitor...

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
6a807b1c91ac66f33f88a787d64904c1

SHA1
83c554c7de04a8115c9005709e5cd01fca82c5d3

SHA256
155314c1c86d8d4e5b802f1eef603c5dd4a2f7c949f069a38af5ba4959bd8256

SHA512
29f2d9f30fc081e7fe6e9fb772c810c9be0422afdc6aff5a286f49a990ededebcf0d083798c2d9f41ad8434393c6d0f5fa6df31226d9c3511ba2a41eb4a65200

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

Filesize
1KB

MD5
aa047e0b013dea9eec11fe2f2a120dcc

SHA1
dd7fe0f474204cd6c5c6da795999d4dad08d47f1

SHA256
e21b56fe298bcd922eda3e7e4f2fc90d669f3b243a873b583413bed928246ddc

SHA512
f7d1a1c0ee99221ab81814574bb8d518a02e00c19d70ac9a0c44178f4570a50f761348e2c3fcbdd293fd037c91738a88e8bc5f19a38bd78e27c6d2edba4f5156

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

Filesize
1KB

MD5
aeecd2e7bcdc958cdd5326ad82352ec5

SHA1
4209a6b9d8895f08de9ab3c14f3ab03fc805c1a4

SHA256
c4ff7547a2ecd269a98acea8ff77efbb8c991da0449afe175e823f8fc194ffb2

SHA512
81e40b3c1c0e759de7e2c60d948a1d15ec911296c5b4d592e7b917a0fee2a24df7a5930b2b5a07122c7a0dd10828d5c87c193f797992ca7de086357805f11af4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h3uvrqkz.a5h.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\svchost.exe

Filesize
43KB

MD5
b5cc96820c23ae9241f31f69ae0f4bd1

SHA1
2b34b1d40aaee3ad827f2f52c607078331bfa5d0

SHA256
282393aa38b758eb429d55acbfc2df1638741ee18eaa2fccf1ea638e396c1606

SHA512
3a08f0fa346c5a3823154d549c997aad2932c34c4d367729c89802a06029ae8dcdba9b053b93ebb279505f3aa96cdfa0d1addccd13065959be4fcec4553c15b0

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

Filesize
962B

MD5
c17c6d47db7e7aea7ad88a65a7825b45

SHA1
d02293c2df2ea36692f5c7c24618a9fcfdc3759b

SHA256
e17ca503977e00cb6d9482f85655fb37e22b902e0624f0d21fa9e47d520b5518

SHA512
6cc8842e1753cb01f4beea425f72ef4f999e3307d32018d716c2f5e1125bd7178841ddf8d882967dec287a62d849bb9ffb0a8b9c2441aa06d224a15da23a54fe

Download Submit
memory/656-14-0x00007FFE060D0000-0x00007FFE06B92000-memory.dmp

Filesize
10.8MB

Download
memory/656-7-0x0000014FD0070000-0x0000014FD0092000-memory.dmp

Filesize
136KB

Download
memory/656-19-0x00007FFE060D0000-0x00007FFE06B92000-memory.dmp

Filesize
10.8MB

Download
memory/656-15-0x00007FFE060D0000-0x00007FFE06B92000-memory.dmp

Filesize
10.8MB

Download
memory/656-13-0x00007FFE060D0000-0x00007FFE06B92000-memory.dmp

Filesize
10.8MB

Download
memory/656-12-0x00007FFE060D0000-0x00007FFE06B92000-memory.dmp

Filesize
10.8MB

Download
memory/656-16-0x00007FFE060D0000-0x00007FFE06B92000-memory.dmp

Filesize
10.8MB

Download
memory/4400-0-0x00007FFE060D3000-0x00007FFE060D5000-memory.dmp

Filesize
8KB

Download
memory/4400-53-0x00007FFE060D3000-0x00007FFE060D5000-memory.dmp

Filesize
8KB

Download
memory/4400-1-0x0000000000E10000-0x0000000000E22000-memory.dmp

Filesize
72KB

Download
memory/4432-60-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download
memory/4432-67-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download
memory/4432-71-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download
memory/4432-70-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download
memory/4432-69-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download
memory/4432-68-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download
memory/4432-66-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download
memory/4432-65-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download
memory/4432-59-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download
memory/4432-61-0x00000299A7E60000-0x00000299A7E61000-memory.dmp

Filesize
4KB

Download