xworm | 1daf0068b904a151117993bd6004d6097eaf104995e00e25785a26d78f8abf0a

Analysis

max time kernel
149s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
30-06-2024 20:42

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General

Target

XCl1ient.exe
Size

60KB
MD5

a0808b7618eb5893c254173472d1adcd
SHA1

9ec40f929de580cf65697b62ffa73c98e74d81a8
SHA256

1daf0068b904a151117993bd6004d6097eaf104995e00e25785a26d78f8abf0a
SHA512

982afbac94e7e83046b7f9aafc5fc4f9c578dc1bb2972e29211d78328b5a363892a78ca287bcb49b8a2b2fa96092b0ae3eb0b17891fc21f4cedf5abca3046602
SSDEEP

768:Rwb4vnaiY9W8vk93noPqu/Ug1WPZ9Irbt6LBI2Ticie6WOWhUAAoenk:R5vai+Zxcg+ZKbgLC2TUe6WOWeJtk

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

0.tcp.eu.ngrok.io:12233

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource yara_rule

behavioral1/memory/3000-0-0x00000000005A0000-0x00000000005B6000-memory.dmp family_xworm
C:\Users\Admin\AppData\Roaming\XCl1ient.exe family_xworm
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exepowershell.exe

pid process

4868 powershell.exe
2204 powershell.exe
3012 powershell.exe

resource	yara_rule
behavioral1/memory/3000-0-0x00000000005A0000-0x00000000005B6000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\XCl1ient.exe	family_xworm

pid	process
4868	powershell.exe
2204	powershell.exe
3012	powershell.exe

Drops startup file 2 IoCs

Processes:

XCl1ient.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XCl1ient.lnk	XCl1ient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XCl1ient.lnk	XCl1ient.exe

Executes dropped EXE 2 IoCs

Processes:

XCl1ient.exeXCl1ient.exe

pid process

3016 XCl1ient.exe
2192 XCl1ient.exe

pid	process
3016	XCl1ient.exe
2192	XCl1ient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XCl1ient.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\XCl1ient = "C:\\Users\\Admin\\AppData\\Roaming\\XCl1ient.exe"	XCl1ient.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 7 IoCs

Web Service
T1102

Processes:

flow ioc

14 0.tcp.eu.ngrok.io
15 0.tcp.eu.ngrok.io
5 0.tcp.eu.ngrok.io
10 0.tcp.eu.ngrok.io
11 0.tcp.eu.ngrok.io
12 0.tcp.eu.ngrok.io
13 0.tcp.eu.ngrok.io
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 ip-api.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

Processes:

schtasks.exe

pid process

4400 schtasks.exe
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

powershell.exepowershell.exepowershell.exeXCl1ient.exe

pid process

4868 powershell.exe
4868 powershell.exe
2204 powershell.exe
2204 powershell.exe
3012 powershell.exe
3012 powershell.exe
3000 XCl1ient.exe

flow	ioc
14	0.tcp.eu.ngrok.io
15	0.tcp.eu.ngrok.io
5	0.tcp.eu.ngrok.io
10	0.tcp.eu.ngrok.io
11	0.tcp.eu.ngrok.io
12	0.tcp.eu.ngrok.io
13	0.tcp.eu.ngrok.io

flow	ioc
1	ip-api.com

pid	process
4400	schtasks.exe

pid	process
4868	powershell.exe
4868	powershell.exe
2204	powershell.exe
2204	powershell.exe
3012	powershell.exe
3012	powershell.exe
3000	XCl1ient.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

XCl1ient.exepowershell.exepowershell.exepowershell.exeXCl1ient.exeXCl1ient.exe

description	pid	process
Token: SeDebugPrivilege	3000	XCl1ient.exe
Token: SeDebugPrivilege	4868	powershell.exe
Token: SeDebugPrivilege	2204	powershell.exe
Token: SeDebugPrivilege	3012	powershell.exe
Token: SeDebugPrivilege	3000	XCl1ient.exe
Token: SeDebugPrivilege	3016	XCl1ient.exe
Token: SeDebugPrivilege	2192	XCl1ient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XCl1ient.exe

pid process

3000 XCl1ient.exe

pid	process
3000	XCl1ient.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

XCl1ient.exe

description	pid	process	target process
PID 3000 wrote to memory of 4868	3000	XCl1ient.exe	powershell.exe
PID 3000 wrote to memory of 4868	3000	XCl1ient.exe	powershell.exe
PID 3000 wrote to memory of 2204	3000	XCl1ient.exe	powershell.exe
PID 3000 wrote to memory of 2204	3000	XCl1ient.exe	powershell.exe
PID 3000 wrote to memory of 3012	3000	XCl1ient.exe	powershell.exe
PID 3000 wrote to memory of 3012	3000	XCl1ient.exe	powershell.exe
PID 3000 wrote to memory of 4400	3000	XCl1ient.exe	schtasks.exe
PID 3000 wrote to memory of 4400	3000	XCl1ient.exe	schtasks.exe

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\XCl1ient.exe
"C:\Users\Admin\AppData\Local\Temp\XCl1ient.exe"
1⤵
- 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:3000

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\XCl1ient.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4868

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XCl1ient.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2204

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\XCl1ient.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3012

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XCl1ient" /tr "C:\Users\Admin\AppData\Roaming\XCl1ient.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:4400

C:\Users\Admin\AppData\Roaming\XCl1ient.exe
C:\Users\Admin\AppData\Roaming\XCl1ient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3016

C:\Users\Admin\AppData\Roaming\XCl1ient.exe
C:\Users\Admin\AppData\Roaming\XCl1ient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2192

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XCl1ient.exe.log
Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

Download Submit
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
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
80b42fe4c6cf64624e6c31e5d7f2d3b3

SHA1
1f93e7dd83b86cb900810b7e3e43797868bf7d93

SHA256
ee20a5b38a6674366efda276dbbf0b43eb54efd282acfc1033042f6b53a80d4d

SHA512
83c1c744c15a8b427a1d3af677ec3bfd0353875a60fe886c41570981e17467ebbb59619b960ca8c5c3ab1430946b0633ea200b7e7d84ab6dca88b60c50055573

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gxq5i2me.rjp.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\XCl1ient.exe
Filesize
60KB

MD5
a0808b7618eb5893c254173472d1adcd

SHA1
9ec40f929de580cf65697b62ffa73c98e74d81a8

SHA256
1daf0068b904a151117993bd6004d6097eaf104995e00e25785a26d78f8abf0a

SHA512
982afbac94e7e83046b7f9aafc5fc4f9c578dc1bb2972e29211d78328b5a363892a78ca287bcb49b8a2b2fa96092b0ae3eb0b17891fc21f4cedf5abca3046602

Download Submit
memory/3000-1-0x00007FFB96953000-0x00007FFB96955000-memory.dmp

Filesize
8KB

Download
memory/3000-2-0x00007FFB96950000-0x00007FFB97412000-memory.dmp

Filesize
10.8MB

Download
memory/3000-48-0x00007FFB96950000-0x00007FFB97412000-memory.dmp

Filesize
10.8MB

Download
memory/3000-0-0x00000000005A0000-0x00000000005B6000-memory.dmp

Filesize
88KB

Download
memory/4868-12-0x00007FFB96950000-0x00007FFB97412000-memory.dmp

Filesize
10.8MB

Download
memory/4868-13-0x00007FFB96950000-0x00007FFB97412000-memory.dmp

Filesize
10.8MB

Download
memory/4868-14-0x00007FFB96950000-0x00007FFB97412000-memory.dmp

Filesize
10.8MB

Download
memory/4868-15-0x00007FFB96950000-0x00007FFB97412000-memory.dmp

Filesize
10.8MB

Download
memory/4868-18-0x00007FFB96950000-0x00007FFB97412000-memory.dmp

Filesize
10.8MB

Download
memory/4868-11-0x000002EEFCC80000-0x000002EEFCCA2000-memory.dmp

Filesize
136KB

Download