xworm | 6fa4e5b526be2acf1ea59d961cf62590c1e438745b0cd9180c45e86a4d637ae1

Resubmissions

21-09-2024 19:36

240921-ya9xxayhnf 10

21-09-2024 18:56

240921-xla3aaxglh 10

Analysis

max time kernel
84s
max time network
80s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
21-09-2024 19:36

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General

Target

XRATClient.exe
Size

354KB
MD5

561def00a7bcf0e79729aaa63a0ca655
SHA1

a0490d9a12b0e125889b11ab6880a75b9f56cf1b
SHA256

6fa4e5b526be2acf1ea59d961cf62590c1e438745b0cd9180c45e86a4d637ae1
SHA512

d9f1909080e51acb48f3dd724343c4721ea891e54e46d8e5fe5f390112d8f4f96c9455c9347be24d4f6c94c03dd6c6d549be5ccafbc0d2db98a50ef2589ff525
SSDEEP

3072:TcKLbgaYXPPfUvubWxU5ImSO2qqk4dGR:Tc5a238mb

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

germany-notice.gl.at.ply.gg:54909

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/780-1-0x0000000000770000-0x00000000007CE000-memory.dmp	family_xworm
behavioral1/files/0x000500000002aa8b-9.dat	family_xworm

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

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
400	XClient.exe
4932	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-1-5-21-6179872-1886041298-1573312864-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XRATClient.exe

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
1644	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	780	XRATClient.exe
Token: SeDebugPrivilege	400	XClient.exe
Token: SeDebugPrivilege	4932	XClient.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 780 wrote to memory of 1644	780	XRATClient.exe	78
PID 780 wrote to memory of 1644	780	XRATClient.exe	78

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\XRATClient.exe
"C:\Users\Admin\AppData\Local\Temp\XRATClient.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:780
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1644

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:400

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.exe.log

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe

Filesize
354KB

MD5
561def00a7bcf0e79729aaa63a0ca655

SHA1
a0490d9a12b0e125889b11ab6880a75b9f56cf1b

SHA256
6fa4e5b526be2acf1ea59d961cf62590c1e438745b0cd9180c45e86a4d637ae1

SHA512
d9f1909080e51acb48f3dd724343c4721ea891e54e46d8e5fe5f390112d8f4f96c9455c9347be24d4f6c94c03dd6c6d549be5ccafbc0d2db98a50ef2589ff525

Download Submit
memory/400-11-0x00007FFF7B8B0000-0x00007FFF7C372000-memory.dmp

Filesize
10.8MB

Download
memory/400-13-0x00007FFF7B8B0000-0x00007FFF7C372000-memory.dmp

Filesize
10.8MB

Download
memory/780-0-0x00007FFF7B8B3000-0x00007FFF7B8B5000-memory.dmp

Filesize
8KB

Download
memory/780-1-0x0000000000770000-0x00000000007CE000-memory.dmp

Filesize
376KB

Download
memory/780-6-0x00007FFF7B8B0000-0x00007FFF7C372000-memory.dmp

Filesize
10.8MB

Download
memory/780-7-0x00007FFF7B8B3000-0x00007FFF7B8B5000-memory.dmp

Filesize
8KB

Download
memory/780-8-0x00007FFF7B8B0000-0x00007FFF7C372000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads