xworm | 36b0449d154aca0868a02c3eaf1a57f40da34b9932b6055c6ed1bb43578a6437

Analysis

max time kernel
149s
max time network
68s
platform
windows11-21h2_x64
resource
win11-20251015-en
resource tags

arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
submitted
04/12/2025, 15:00

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General

Target
XClient.exe
Size 35KB
Sample251204-sdadkaymft
SHA256 36b0449d154aca0868a02c3eaf1a57f40da34b9932b6055c6ed1bb43578a6437
MD5 cbbc0ddb7fb6a9339d2859eab4715c71
SHA1 73338ef997af8414b584e1bc7298f6e7ec022e21
SHA512 99968a2de8f050be822758acc1f8a1ec4cd98cdab0e4019325967cdf359420fc05f35448f35311f73bffe8509e592e6df7b28cfa53da455d2e1cee8d18406f37
SSDEEP 768:fq7bX8DLxPYXy1TxVPasVFyw9b4O/h9y0D:i7bX8DOc+KFr9b4O/DhD
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

execution xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

hackersda-46118.portmap.host:58910
cloudpub.ru:58910
tcp.cloudpub.ru:58910

Mutex

ceJbK6cMYgS7fiCJ

Attributes

Install_directory
%AppData%
install_file
USB.exe
localhost
127.0.0.1

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2412-0-0x0000000000430000-0x0000000000440000-memory.dmp	family_xworm
behavioral2/files/0x001a00000002b2ae-6.dat	family_xworm

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

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3400	svhost
5600	svhost

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-1-5-21-2318277690-2490144949-3346562762-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\svhost"	XClient.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
5556	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2412	XClient.exe
Token: SeDebugPrivilege	2412	XClient.exe
Token: SeDebugPrivilege	3400	svhost
Token: SeDebugPrivilege	5600	svhost

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 5556	2412	XClient.exe	79

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\Users\Admin\AppData\Roaming\svhost"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5556

C:\Users\Admin\AppData\Roaming\svhost
C:\Users\Admin\AppData\Roaming\svhost
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3400

C:\Users\Admin\AppData\Roaming\svhost
C:\Users\Admin\AppData\Roaming\svhost
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5600

Network

MITRE ATT&CK Enterprise v16

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

svhost.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svhost.log
Size 654B
SHA256 e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3
MD5 2cbbb74b7da1f720b48ed31085cbd5b8
SHA1 79caa9a3ea8abe1b9c4326c3633da64a5f724964
SHA512 ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9
MD5 SHA1 SHA512

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svhost

Path C:\Users\Admin\AppData\Roaming\svhost
Size 35KB
SHA256 36b0449d154aca0868a02c3eaf1a57f40da34b9932b6055c6ed1bb43578a6437
MD5 cbbc0ddb7fb6a9339d2859eab4715c71
SHA1 73338ef997af8414b584e1bc7298f6e7ec022e21
SHA512 99968a2de8f050be822758acc1f8a1ec4cd98cdab0e4019325967cdf359420fc05f35448f35311f73bffe8509e592e6df7b28cfa53da455d2e1cee8d18406f37
SSDEEP 768:fq7bX8DLxPYXy1TxVPasVFyw9b4O/h9y0D:i7bX8DOc+KFr9b4O/DhD
MD5 SHA1 SHA512 SSDEEP

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memory/2412-0-0x0000000000430000-0x0000000000440000-memory.dmp

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memory/2412-4-0x0000000002610000-0x0000000002620000-memory.dmp

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memory/2412-5-0x0000000002610000-0x0000000002620000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads