xworm | 0c8d4f1c691321cae119c1b75f442fcd368c72622b44f238c6ffda553ff9532a

Analysis

max time kernel
150s
max time network
154s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
01/03/2025, 04:43

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General

Target

dd.exe
Size

65KB
MD5

3656e7ce0ef34b60dc1312a2f4158f99
SHA1

90474d1c1b69aa23aa52ab848e570a978e0e4ee0
SHA256

0c8d4f1c691321cae119c1b75f442fcd368c72622b44f238c6ffda553ff9532a
SHA512

03894a0b129a1cff9daa8c04d058da83d9df38f0dd7893c533d79ee969b5536ee92611551c25c739a75331f860b88fe5216bdb9f517dcd53886ac2dcb87dccb5
SSDEEP

1536:lEBUcA5UtEa3FwkVaACZa+bmx7xVtOOYAc6uW:K2baHQACk+bmt4OYAR

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

fri-potential.gl.at.ply.gg:33550

Attributes

Install_directory
%ProgramData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/5492-1-0x0000000000620000-0x0000000000636000-memory.dmp	family_xworm
behavioral1/files/0x000b000000027db9-6.dat	family_xworm

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1252571373-3012572919-3982031544-1000\Control Panel\International\Geo\Nation	dd.exe

Executes dropped EXE 2 IoCs

pid	Process
5548	XClient.exe
3704	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-1-5-21-1252571373-3012572919-3982031544-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\ProgramData\\XClient.exe"	dd.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
3608	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
5492	dd.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	5492	dd.exe
Token: SeDebugPrivilege	5492	dd.exe
Token: SeDebugPrivilege	5548	XClient.exe
Token: SeDebugPrivilege	3704	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5492	dd.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5492 wrote to memory of 3608	5492	dd.exe	80
PID 5492 wrote to memory of 3608	5492	dd.exe	80

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\dd.exe
"C:\Users\Admin\AppData\Local\Temp\dd.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5492
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\ProgramData\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3608

C:\ProgramData\XClient.exe
"C:\ProgramData\XClient.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5548

C:\ProgramData\XClient.exe
"C:\ProgramData\XClient.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3704

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

Replay Monitor

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Downloads

C:\ProgramData\XClient.exe

Filesize
65KB

MD5
3656e7ce0ef34b60dc1312a2f4158f99

SHA1
90474d1c1b69aa23aa52ab848e570a978e0e4ee0

SHA256
0c8d4f1c691321cae119c1b75f442fcd368c72622b44f238c6ffda553ff9532a

SHA512
03894a0b129a1cff9daa8c04d058da83d9df38f0dd7893c533d79ee969b5536ee92611551c25c739a75331f860b88fe5216bdb9f517dcd53886ac2dcb87dccb5

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

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

Download Submit
memory/5492-0-0x00007FFC7F483000-0x00007FFC7F485000-memory.dmp

Filesize
8KB

Download
memory/5492-1-0x0000000000620000-0x0000000000636000-memory.dmp

Filesize
88KB

Download
memory/5492-3-0x00007FFC7F480000-0x00007FFC7FF42000-memory.dmp

Filesize
10.8MB

Download
memory/5492-4-0x00007FFC7F483000-0x00007FFC7F485000-memory.dmp

Filesize
8KB

Download
memory/5492-5-0x00007FFC7F480000-0x00007FFC7FF42000-memory.dmp

Filesize
10.8MB

Download
memory/5548-8-0x00007FFC7F480000-0x00007FFC7FF42000-memory.dmp

Filesize
10.8MB

Download
memory/5548-10-0x00007FFC7F480000-0x00007FFC7FF42000-memory.dmp

Filesize
10.8MB

Download