xworm | 24e4267cb003cbeb5bdaffbf4089bff010cad46033172894165e765adb55f308

Analysis

max time kernel
40s
max time network
33s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
16/11/2024, 21:16

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General

Target

Client_protected.exe
Size

2.9MB
MD5

29e814ca993bb291e2965e965efea4e7
SHA1

04e4771d22bcc4fcfaeecec4e45177e4f16752e7
SHA256

24e4267cb003cbeb5bdaffbf4089bff010cad46033172894165e765adb55f308
SHA512

340cb2d1381175bf0c6d33901b3bfd6b5ef13affb236901922f942f0b085e99b3bdce358a2066cdf636af2634858a18a3cc0c25862a6258f3c695668524bcc68
SSDEEP

49152:DWcmOyXHtKsdNH4R8Qips6kIbBAQMaNJObmgd3nQCxdfNd26k:DeRos94tipTOQJObm63bdT

Score

10^/10

xworm discovery evasion execution persistence rat themida trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:7666

192.168.1.46:7666

Attributes

Install_directory
%Userprofile%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0006000000025b8c-27.dat	family_xworm
behavioral1/memory/5976-45-0x00000000005E0000-0x00000000005F6000-memory.dmp	family_xworm

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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Client_protected.exe

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
5020	powershell.exe
5568	powershell.exe
3460	powershell.exe
1268	powershell.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Client_protected.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Client_protected.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
5976	Particle.exe

Themida packer 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/1836-0-0x0000000000400000-0x0000000000B71000-memory.dmp	themida
behavioral1/memory/1836-2-0x0000000000400000-0x0000000000B71000-memory.dmp	themida
behavioral1/memory/1836-47-0x0000000000400000-0x0000000000B71000-memory.dmp	themida

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-1-5-21-2584844841-1405471295-1760131749-1000\Software\Microsoft\Windows\CurrentVersion\Run\Breeze Dependencies = "C:\\Users\\Admin\\Breeze Dependencies"	Particle.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Client_protected.exe

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

Web Service

T1102

flow	ioc
1	raw.githubusercontent.com
10	raw.githubusercontent.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	ip-api.com

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1836	Client_protected.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 1 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	Client_protected.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
4680	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1836	Client_protected.exe
1836	Client_protected.exe
5020	powershell.exe
5020	powershell.exe
5568	powershell.exe
5568	powershell.exe
3460	powershell.exe
3460	powershell.exe
1268	powershell.exe
1268	powershell.exe
5976	Particle.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	5976	Particle.exe
Token: SeDebugPrivilege	5020	powershell.exe
Token: SeDebugPrivilege	5568	powershell.exe
Token: SeDebugPrivilege	3460	powershell.exe
Token: SeDebugPrivilege	1268	powershell.exe
Token: SeDebugPrivilege	5976	Particle.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5976	Particle.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1836 wrote to memory of 5976	1836	Client_protected.exe	82
PID 1836 wrote to memory of 5976	1836	Client_protected.exe	82
PID 5976 wrote to memory of 5020	5976	Particle.exe	84
PID 5976 wrote to memory of 5020	5976	Particle.exe	84
PID 5976 wrote to memory of 5568	5976	Particle.exe	86
PID 5976 wrote to memory of 5568	5976	Particle.exe	86
PID 5976 wrote to memory of 3460	5976	Particle.exe	88
PID 5976 wrote to memory of 3460	5976	Particle.exe	88
PID 5976 wrote to memory of 1268	5976	Particle.exe	90
PID 5976 wrote to memory of 1268	5976	Particle.exe	90
PID 5976 wrote to memory of 4680	5976	Particle.exe	92
PID 5976 wrote to memory of 4680	5976	Particle.exe	92

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\Client_protected.exe
"C:\Users\Admin\AppData\Local\Temp\Client_protected.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1836
- C:\Users\Admin\AppData\Local\Temp\Particle.exe
  "C:\Users\Admin\AppData\Local\Temp\Particle.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5976
- - 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\Particle.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5020
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Particle.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5568
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\Breeze Dependencies'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3460
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Breeze Dependencies'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1268
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Breeze Dependencies" /tr "C:\Users\Admin\Breeze Dependencies"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4680

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

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
d0a4a3b9a52b8fe3b019f6cd0ef3dad6

SHA1
fed70ce7834c3b97edbd078eccda1e5effa527cd

SHA256
21942e513f223fdad778348fbb20617dd29f986bccd87824c0ae7f15649f3f31

SHA512
1a66f837b4e7fb6346d0500aeacb44902fb8a239bce23416271263eba46fddae58a17075e188ae43eb516c841e02c87e32ebd73256c7cc2c0713d00c35f1761b

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

Filesize
944B

MD5
4397b0d1a82fec8a95f1ab53c152c5a5

SHA1
3632ed4f2b65fd0df29b3d3725e3a611d2e1adf7

SHA256
10cece13749ac090c815e53dc5e248b4b9c3ba93dc3d434d97d22f12a3906734

SHA512
f0d21ab75d08e1cb4ac83507f9ca41ef5365027b0d7e27747ded44b76fdb0346ca2d7499697802c5b67696e0c73716fcfab698825a143515151001690804d59f

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

Filesize
944B

MD5
906523560f8af295fe0b398799658002

SHA1
b6b3d1f077ae0c39ac71d138630744856c0e424d

SHA256
9f1750afbd8fd87ce27d8ecb32a9dfc9247ca360055a34fb25780c3685995ced

SHA512
4dacd67d05b3648ce9ec59833aeca1c4683e25a8c0ab13297bede5168487e3c9a0608b9c93bb4e3baa2bd3a5414672f62c55b7386813d814e2cb44cd926f566b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Particle.exe

Filesize
66KB

MD5
5ef72dadacfa3b577e843899b7ca8b77

SHA1
d09a930c3be9640dedd5e05abc56b8e144feb2a7

SHA256
e96dc38a4dbc211fed709d64e5c8d5b03ae46ec6fe68ad94fd26345790ff88b2

SHA512
ece848c67382ebdc5090a4430a7d74d7454ab9cca94329e3bc1111a2d409e1898ab102705526d742831e156149dde911e87a9573da5b57415ab914914af722c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\WinX32.exe

Filesize
280KB

MD5
e2ae341a50180e53a22b84cc07552322

SHA1
9ccf03c29a892ff509978b38b89c3586b4198ba6

SHA256
497dd6c9cf00c77554333cf010fd312d2420314c77bfa1c4ddf1f4cd6d2eeac7

SHA512
d60efd1926284f11c7977f6d3ed9b678461db2778c688197a1577b20dba0a0ae54e680c8c96e3cf51378cf290b1a60d14ab21cd1f13330602126566a99b4ccad

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vj0cwfng.bcc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1836-47-0x0000000000400000-0x0000000000B71000-memory.dmp

Filesize
7.4MB

Download
memory/1836-0-0x0000000000400000-0x0000000000B71000-memory.dmp

Filesize
7.4MB

Download
memory/1836-2-0x0000000000400000-0x0000000000B71000-memory.dmp

Filesize
7.4MB

Download
memory/1836-1-0x00000000771D6000-0x00000000771D8000-memory.dmp

Filesize
8KB

Download
memory/5020-49-0x0000021B65760000-0x0000021B65782000-memory.dmp

Filesize
136KB

Download
memory/5976-45-0x00000000005E0000-0x00000000005F6000-memory.dmp

Filesize
88KB

Download
memory/5976-48-0x00007FF912320000-0x00007FF912DE2000-memory.dmp

Filesize
10.8MB

Download
memory/5976-44-0x00007FF912323000-0x00007FF912325000-memory.dmp

Filesize
8KB

Download
memory/5976-94-0x00007FF912323000-0x00007FF912325000-memory.dmp

Filesize
8KB

Download
memory/5976-96-0x00007FF912320000-0x00007FF912DE2000-memory.dmp

Filesize
10.8MB

Download