xworm | ee93b574812d8734c3b5eba01e7521a74010c8817f200781505b1002b789394d

Analysis

max time kernel
60s
max time network
61s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-11-2024 14:40

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General

Target

XClient.exe
Size

73KB
MD5

29489bd7b40f8fe8e9f8b5eef2e7934b
SHA1

808421866619a366107a592dc4936e4a3fde404e
SHA256

ee93b574812d8734c3b5eba01e7521a74010c8817f200781505b1002b789394d
SHA512

dcf6ab092887cb0313a9dd8b3c5222e9d22d18d8efd24151627dc3fad56e0f812576ed9434c21853c2cb730412eb76ffb1c18689368e0ab34ba3e6e80287b1d2
SSDEEP

1536:d3Qg91AbJLf+HOVvZ6T+bY+j/jDHIkMRytbaZORK0NLTBVhb8:agTA5JC+bYeLXAytbyORVLjhb8

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

192.168.29.241:22119

books-royalty.gl.at.ply.gg:22119

Attributes

Install_directory
%ProgramData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4396-1-0x00000000003C0000-0x00000000003D8000-memory.dmp	family_xworm
behavioral2/files/0x0002000000022ab7-9.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2972	Comet

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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Comet = "C:\\ProgramData\\Comet"	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
2396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4396	XClient.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4396	XClient.exe
Token: SeDebugPrivilege	4396	XClient.exe
Token: SeDebugPrivilege	2972	Comet

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4396	XClient.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4396 wrote to memory of 2396	4396	XClient.exe	95
PID 4396 wrote to memory of 2396	4396	XClient.exe	95

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⤵
- Checks computer location settings
- 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:4396
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Comet" /tr "C:\ProgramData\Comet"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2396

C:\ProgramData\Comet
C:\ProgramData\Comet
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2972

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\Comet

Filesize
73KB

MD5
29489bd7b40f8fe8e9f8b5eef2e7934b

SHA1
808421866619a366107a592dc4936e4a3fde404e

SHA256
ee93b574812d8734c3b5eba01e7521a74010c8817f200781505b1002b789394d

SHA512
dcf6ab092887cb0313a9dd8b3c5222e9d22d18d8efd24151627dc3fad56e0f812576ed9434c21853c2cb730412eb76ffb1c18689368e0ab34ba3e6e80287b1d2

Download Submit
memory/2972-10-0x00007FFFA2C70000-0x00007FFFA3731000-memory.dmp

Filesize
10.8MB

Download
memory/2972-12-0x00007FFFA2C70000-0x00007FFFA3731000-memory.dmp

Filesize
10.8MB

Download
memory/4396-0-0x00007FFFA2C73000-0x00007FFFA2C75000-memory.dmp

Filesize
8KB

Download
memory/4396-1-0x00000000003C0000-0x00000000003D8000-memory.dmp

Filesize
96KB

Download
memory/4396-5-0x00007FFFA2C70000-0x00007FFFA3731000-memory.dmp

Filesize
10.8MB

Download
memory/4396-6-0x00007FFFA2C73000-0x00007FFFA2C75000-memory.dmp

Filesize
8KB

Download
memory/4396-7-0x00007FFFA2C70000-0x00007FFFA3731000-memory.dmp

Filesize
10.8MB

Download