xworm | 23ecee99ee4ab7a150f91d4202033a6629cf5af74d80b6a12c2396f1f775734f

Analysis

max time kernel
898s
max time network
903s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
09/03/2025, 09:56

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General

Target

Runtime Broker.exe
Size

73KB
MD5

7a5408d9535b2e5db8d194f4d8b93c23
SHA1

c8c6caf9f750b4bc756b40c41f00c3ed3af7fbeb
SHA256

23ecee99ee4ab7a150f91d4202033a6629cf5af74d80b6a12c2396f1f775734f
SHA512

95ef1bdb1e56b3d9c6809586ea0d8ff197375584f8625748811dceb4783fb693749b49c3ed0890c23782946acec3ba5baadcf49735a87985e30f14081a365fd8
SSDEEP

1536:Jb2yCofWhUvuJJH9o2qMnfAQPJwz7opMfQxnbSUyJhb/KpKU+k6eeOJ5w0pIBAM:nWhUvuJB9o2qMnfAQPJKy1jyJhb/KHhO

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%ProgramData%
install_file
USB.exe
pastebin_url
https://pastebin.com/raw/DSFaHH8B

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3888-1-0x00000000008D0000-0x00000000008E8000-memory.dmp	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
2672	powershell.exe
1384	powershell.exe
3564	powershell.exe
1456	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-1-5-21-80166876-2127584002-2233670790-1000\Control Panel\International\Geo\Nation	Runtime Broker.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-1-5-21-80166876-2127584002-2233670790-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Runtime Broker = "C:\\ProgramData\\Runtime Broker"	Runtime Broker.exe

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

Web Service

T1102

flow	ioc
14	pastebin.com
15	pastebin.com

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

System Information Discovery
T1082

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
4084	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3888	Runtime Broker.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1456	powershell.exe
1456	powershell.exe
2672	powershell.exe
2672	powershell.exe
1384	powershell.exe
1384	powershell.exe
3564	powershell.exe
3564	powershell.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
1648	powershell.exe
1648	powershell.exe
1648	powershell.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe
3888	Runtime Broker.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3888	Runtime Broker.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3888	Runtime Broker.exe
Token: SeDebugPrivilege	1456	powershell.exe
Token: SeIncreaseQuotaPrivilege	1456	powershell.exe
Token: SeSecurityPrivilege	1456	powershell.exe
Token: SeTakeOwnershipPrivilege	1456	powershell.exe
Token: SeLoadDriverPrivilege	1456	powershell.exe
Token: SeSystemProfilePrivilege	1456	powershell.exe
Token: SeSystemtimePrivilege	1456	powershell.exe
Token: SeProfSingleProcessPrivilege	1456	powershell.exe
Token: SeIncBasePriorityPrivilege	1456	powershell.exe
Token: SeCreatePagefilePrivilege	1456	powershell.exe
Token: SeBackupPrivilege	1456	powershell.exe
Token: SeRestorePrivilege	1456	powershell.exe
Token: SeShutdownPrivilege	1456	powershell.exe
Token: SeDebugPrivilege	1456	powershell.exe
Token: SeSystemEnvironmentPrivilege	1456	powershell.exe
Token: SeRemoteShutdownPrivilege	1456	powershell.exe
Token: SeUndockPrivilege	1456	powershell.exe
Token: SeManageVolumePrivilege	1456	powershell.exe
Token: 33	1456	powershell.exe
Token: 34	1456	powershell.exe
Token: 35	1456	powershell.exe
Token: 36	1456	powershell.exe
Token: SeDebugPrivilege	2672	powershell.exe
Token: SeIncreaseQuotaPrivilege	2672	powershell.exe
Token: SeSecurityPrivilege	2672	powershell.exe
Token: SeTakeOwnershipPrivilege	2672	powershell.exe
Token: SeLoadDriverPrivilege	2672	powershell.exe
Token: SeSystemProfilePrivilege	2672	powershell.exe
Token: SeSystemtimePrivilege	2672	powershell.exe
Token: SeProfSingleProcessPrivilege	2672	powershell.exe
Token: SeIncBasePriorityPrivilege	2672	powershell.exe
Token: SeCreatePagefilePrivilege	2672	powershell.exe
Token: SeBackupPrivilege	2672	powershell.exe
Token: SeRestorePrivilege	2672	powershell.exe
Token: SeShutdownPrivilege	2672	powershell.exe
Token: SeDebugPrivilege	2672	powershell.exe
Token: SeSystemEnvironmentPrivilege	2672	powershell.exe
Token: SeRemoteShutdownPrivilege	2672	powershell.exe
Token: SeUndockPrivilege	2672	powershell.exe
Token: SeManageVolumePrivilege	2672	powershell.exe
Token: 33	2672	powershell.exe
Token: 34	2672	powershell.exe
Token: 35	2672	powershell.exe
Token: 36	2672	powershell.exe
Token: SeDebugPrivilege	1384	powershell.exe
Token: SeIncreaseQuotaPrivilege	1384	powershell.exe
Token: SeSecurityPrivilege	1384	powershell.exe
Token: SeTakeOwnershipPrivilege	1384	powershell.exe
Token: SeLoadDriverPrivilege	1384	powershell.exe
Token: SeSystemProfilePrivilege	1384	powershell.exe
Token: SeSystemtimePrivilege	1384	powershell.exe
Token: SeProfSingleProcessPrivilege	1384	powershell.exe
Token: SeIncBasePriorityPrivilege	1384	powershell.exe
Token: SeCreatePagefilePrivilege	1384	powershell.exe
Token: SeBackupPrivilege	1384	powershell.exe
Token: SeRestorePrivilege	1384	powershell.exe
Token: SeShutdownPrivilege	1384	powershell.exe
Token: SeDebugPrivilege	1384	powershell.exe
Token: SeSystemEnvironmentPrivilege	1384	powershell.exe
Token: SeRemoteShutdownPrivilege	1384	powershell.exe
Token: SeUndockPrivilege	1384	powershell.exe
Token: SeManageVolumePrivilege	1384	powershell.exe
Token: 33	1384	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3888	Runtime Broker.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3888 wrote to memory of 1456	3888	Runtime Broker.exe	86
PID 3888 wrote to memory of 1456	3888	Runtime Broker.exe	86
PID 3888 wrote to memory of 2672	3888	Runtime Broker.exe	91
PID 3888 wrote to memory of 2672	3888	Runtime Broker.exe	91
PID 3888 wrote to memory of 1384	3888	Runtime Broker.exe	93
PID 3888 wrote to memory of 1384	3888	Runtime Broker.exe	93
PID 3888 wrote to memory of 3564	3888	Runtime Broker.exe	95
PID 3888 wrote to memory of 3564	3888	Runtime Broker.exe	95
PID 3888 wrote to memory of 4084	3888	Runtime Broker.exe	98
PID 3888 wrote to memory of 4084	3888	Runtime Broker.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\Runtime Broker.exe
"C:\Users\Admin\AppData\Local\Temp\Runtime Broker.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3888
- 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\Runtime Broker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1456
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Runtime Broker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Runtime Broker'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1384
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Runtime Broker'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:3564
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Runtime Broker" /tr "C:\ProgramData\Runtime Broker"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4084

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
PID:1648

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

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
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
1KB

MD5
837b232dbb68f1d7ad72cfd0cbbb0ba0

SHA1
b731d274cda258b443d87923832b7b8b4ffb2732

SHA256
0d64716380532c06ffc351a7f77771f66d9584cbfd18c79618287949536cfb25

SHA512
a4da04953c0a3c4390c0a9aa071dfbb930e28ec71a17ce55b67ca050a5dcaab73ed3bdac82f46ad715999a210df661f8bbf97467c1352e8560652994970950d3

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

Filesize
1KB

MD5
019dd4c40f1dcdaf1e3b463052a1bc51

SHA1
cc2dd9a2108b4a13cad59dc878596662e44482fd

SHA256
e7461494383915be9c184b69d57abe090e7bc28a6601002c58ae0ce803290e45

SHA512
b759ea9b23f3f8461d0e16821ecc544a4b7492067f3ecd064a0c83699e000fa3c617bdfc7fa8e78c61f7d0c758ff8de45c9d1feca8c258bd69a3b7668d517040

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4gmbxrbm.e0t.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1456-12-0x00007FFCFBBD0000-0x00007FFCFC692000-memory.dmp

Filesize
10.8MB

Download
memory/1456-14-0x00007FFCFBBD0000-0x00007FFCFC692000-memory.dmp

Filesize
10.8MB

Download
memory/1456-15-0x00007FFCFBBD0000-0x00007FFCFC692000-memory.dmp

Filesize
10.8MB

Download
memory/1456-16-0x00007FFCFBBD0000-0x00007FFCFC692000-memory.dmp

Filesize
10.8MB

Download
memory/1456-19-0x00007FFCFBBD0000-0x00007FFCFC692000-memory.dmp

Filesize
10.8MB

Download
memory/1456-13-0x00007FFCFBBD0000-0x00007FFCFC692000-memory.dmp

Filesize
10.8MB

Download
memory/1456-7-0x00000238B7D70000-0x00000238B7D92000-memory.dmp

Filesize
136KB

Download
memory/1648-78-0x000002D0EFA00000-0x000002D0EFA44000-memory.dmp

Filesize
272KB

Download
memory/1648-79-0x000002D0EFAD0000-0x000002D0EFB46000-memory.dmp

Filesize
472KB

Download
memory/3888-0-0x00007FFCFBBD3000-0x00007FFCFBBD5000-memory.dmp

Filesize
8KB

Download
memory/3888-1-0x00000000008D0000-0x00000000008E8000-memory.dmp

Filesize
96KB

Download
memory/3888-55-0x00007FFCFBBD0000-0x00007FFCFC692000-memory.dmp

Filesize
10.8MB

Download
memory/3888-56-0x00007FFCFBBD0000-0x00007FFCFC692000-memory.dmp

Filesize
10.8MB

Download