xworm | 583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 00:00

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General

Target

583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe
Size

102KB
MD5

15d7a58db8aa9950ce53375b2fde5f72
SHA1

a403f7ab69cf2d13cb54f37caa53a69b29815813
SHA256

583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6
SHA512

adedfeb38a0c271719214ba7f849867f369567238c8c47679f8a322877de5ad6f18027d73df38e526da05cd0d667cf9ba7af124c8228b5335631f30a2026ae00
SSDEEP

3072:n+AbTnyDZW7Dd4sKmrqwNdYcILP4k3O1uo:TPyNaxKcb2LP4k3O

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

192.168.100.13:7000

Attributes

Install_directory
%AppData%
install_file
RuntimeBroker.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1504-3-0x00000000003E0000-0x00000000003F8000-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
1536	powershell.exe
2388	powershell.exe
1144	powershell.exe
1440	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe

Executes dropped EXE 2 IoCs

pid	Process
1940	RuntimeBroker.exe
1656	RuntimeBroker.exe

Loads dropped DLL 1 IoCs

pid	Process
1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Users\\Admin\\AppData\\Roaming\\RuntimeBroker.exe"	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.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
2576	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1536	powershell.exe
2388	powershell.exe
1144	powershell.exe
1440	powershell.exe
1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe
Token: SeDebugPrivilege	1536	powershell.exe
Token: SeDebugPrivilege	2388	powershell.exe
Token: SeDebugPrivilege	1144	powershell.exe
Token: SeDebugPrivilege	1440	powershell.exe
Token: SeDebugPrivilege	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe
Token: SeDebugPrivilege	1940	RuntimeBroker.exe
Token: SeDebugPrivilege	1656	RuntimeBroker.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 1536	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	30
PID 1504 wrote to memory of 1536	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	30
PID 1504 wrote to memory of 1536	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	30
PID 1504 wrote to memory of 1536	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	30
PID 1504 wrote to memory of 2388	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	32
PID 1504 wrote to memory of 2388	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	32
PID 1504 wrote to memory of 2388	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	32
PID 1504 wrote to memory of 2388	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	32
PID 1504 wrote to memory of 1144	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	34
PID 1504 wrote to memory of 1144	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	34
PID 1504 wrote to memory of 1144	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	34
PID 1504 wrote to memory of 1144	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	34
PID 1504 wrote to memory of 1440	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	36
PID 1504 wrote to memory of 1440	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	36
PID 1504 wrote to memory of 1440	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	36
PID 1504 wrote to memory of 1440	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	36
PID 1504 wrote to memory of 2576	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	38
PID 1504 wrote to memory of 2576	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	38
PID 1504 wrote to memory of 2576	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	38
PID 1504 wrote to memory of 2576	1504	583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe	38
PID 2880 wrote to memory of 1940	2880	taskeng.exe	42
PID 2880 wrote to memory of 1940	2880	taskeng.exe	42
PID 2880 wrote to memory of 1940	2880	taskeng.exe	42
PID 2880 wrote to memory of 1940	2880	taskeng.exe	42
PID 2880 wrote to memory of 1656	2880	taskeng.exe	43
PID 2880 wrote to memory of 1656	2880	taskeng.exe	43
PID 2880 wrote to memory of 1656	2880	taskeng.exe	43
PID 2880 wrote to memory of 1656	2880	taskeng.exe	43

C:\Users\Admin\AppData\Local\Temp\583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe
"C:\Users\Admin\AppData\Local\Temp\583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1536
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2388
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1144
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1440
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "RuntimeBroker" /tr "C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2576

C:\Windows\system32\taskeng.exe
taskeng.exe {DDA63895-9A11-4054-A621-CB0D4165E213} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
  C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1940
- C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
  C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1656

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
52a7a8449f69f79403fd4fb90d4e765e

SHA1
39f51c1b9db41ba62c8dcde2023897eac13658c2

SHA256
6edc3639e2a6831d93538e90f575884431dedf28ebcfc12049830d295455878f

SHA512
6f682cc7f98daaf68b4422c3d209552d5ce6894593563b6376460b2efc0fad62ad84ac7c2bcb9ac5ca2f6f8a5d6f14f33d3dd856e4c2a6a7f775f97150272271

Download Submit
\Users\Admin\AppData\Roaming\RuntimeBroker.exe

Filesize
102KB

MD5
15d7a58db8aa9950ce53375b2fde5f72

SHA1
a403f7ab69cf2d13cb54f37caa53a69b29815813

SHA256
583df026cb00262ddb8bbe49d7bf22112113a5207b9797d11a2654c8aa7924e6

SHA512
adedfeb38a0c271719214ba7f849867f369567238c8c47679f8a322877de5ad6f18027d73df38e526da05cd0d667cf9ba7af124c8228b5335631f30a2026ae00

Download Submit
memory/1504-0-0x0000000073EDE000-0x0000000073EDF000-memory.dmp

Filesize
4KB

Download
memory/1504-1-0x0000000000EA0000-0x0000000000EC2000-memory.dmp

Filesize
136KB

Download
memory/1504-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1504-3-0x00000000003E0000-0x00000000003F8000-memory.dmp

Filesize
96KB

Download
memory/1504-4-0x0000000073ED0000-0x00000000745BE000-memory.dmp

Filesize
6.9MB

Download
memory/1504-29-0x0000000073EDE000-0x0000000073EDF000-memory.dmp

Filesize
4KB

Download
memory/1504-30-0x0000000073ED0000-0x00000000745BE000-memory.dmp

Filesize
6.9MB

Download
memory/1536-7-0x0000000002A00000-0x0000000002A40000-memory.dmp

Filesize
256KB

Download
memory/1940-33-0x00000000013E0000-0x0000000001402000-memory.dmp

Filesize
136KB

Download