xworm | ec9fa98b9c0a55ad5d3b51bf6148b6e2041d1a14c36b4ad98caa9438bc3854e9

Analysis

max time kernel
148s
max time network
119s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:18

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General

Target

fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.exe
Size

144KB
MD5

2c55bdee9b3ac74ea1c16c0c86deb93c
SHA1

f74a12160819d97888e93e5b56067d4b24413791
SHA256

fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c
SHA512

aebb19b54103f9aa2efda1da908fd08bd9e426610e7c6bccda92ceb0dd8116795b5ed54e6d05c2eb8588eb63fb2916970e443fc6639451e330e093d39f7ce3ae
SSDEEP

3072:3IJrjowkba1TOi1M+lmsolAIrRuw+mqv9j1MWLQI:3IdAbT+lDAA

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

xkpog9yml.localto.net:5392

:5392

Attributes

Install_directory
%Temp%
install_file
windowsservice.exe

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral11/memory/2656-1-0x0000000000E90000-0x0000000000EBA000-memory.dmp	family_xworm
behavioral11/files/0x000b0000000122cf-9.dat	family_xworm
behavioral11/memory/2600-11-0x00000000002D0000-0x00000000002FA000-memory.dmp	family_xworm
behavioral11/memory/1500-15-0x0000000000B30000-0x0000000000B5A000-memory.dmp	family_xworm
behavioral11/memory/2016-17-0x00000000012A0000-0x00000000012CA000-memory.dmp	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\windowsservice.lnk	fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windowsservice.lnk	fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.exe

Executes dropped EXE 3 IoCs

pid	Process
2600	windowsservice.exe
1500	windowsservice.exe
2016	windowsservice.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\windowsservice = "C:\\Users\\Admin\\AppData\\Local\\Temp\\windowsservice.exe"	fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.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
2988	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2656	fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.exe
Token: SeDebugPrivilege	2600	windowsservice.exe
Token: SeDebugPrivilege	1500	windowsservice.exe
Token: SeDebugPrivilege	2016	windowsservice.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 2988	2656	fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.exe	30
PID 2656 wrote to memory of 2988	2656	fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.exe	30
PID 2656 wrote to memory of 2988	2656	fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.exe	30
PID 2576 wrote to memory of 2600	2576	taskeng.exe	33
PID 2576 wrote to memory of 2600	2576	taskeng.exe	33
PID 2576 wrote to memory of 2600	2576	taskeng.exe	33
PID 2576 wrote to memory of 1500	2576	taskeng.exe	35
PID 2576 wrote to memory of 1500	2576	taskeng.exe	35
PID 2576 wrote to memory of 1500	2576	taskeng.exe	35
PID 2576 wrote to memory of 2016	2576	taskeng.exe	36
PID 2576 wrote to memory of 2016	2576	taskeng.exe	36
PID 2576 wrote to memory of 2016	2576	taskeng.exe	36

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\fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.exe
"C:\Users\Admin\AppData\Local\Temp\fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2656
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "windowsservice" /tr "C:\Users\Admin\AppData\Local\Temp\windowsservice.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2988

C:\Windows\system32\taskeng.exe
taskeng.exe {CF396FC3-3573-46A9-A2C4-D60EA1A611A1} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2576
- C:\Users\Admin\AppData\Local\Temp\windowsservice.exe
  C:\Users\Admin\AppData\Local\Temp\windowsservice.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2600
- C:\Users\Admin\AppData\Local\Temp\windowsservice.exe
  C:\Users\Admin\AppData\Local\Temp\windowsservice.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1500
- C:\Users\Admin\AppData\Local\Temp\windowsservice.exe
  C:\Users\Admin\AppData\Local\Temp\windowsservice.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2016

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\Temp\windowsservice.exe

Filesize
144KB

MD5
2c55bdee9b3ac74ea1c16c0c86deb93c

SHA1
f74a12160819d97888e93e5b56067d4b24413791

SHA256
fe99ddfdfc78f8223ddd4511fafbccd50e22d089c428f9c6cea01d89b2142c6c

SHA512
aebb19b54103f9aa2efda1da908fd08bd9e426610e7c6bccda92ceb0dd8116795b5ed54e6d05c2eb8588eb63fb2916970e443fc6639451e330e093d39f7ce3ae

Download Submit
memory/1500-15-0x0000000000B30000-0x0000000000B5A000-memory.dmp

Filesize
168KB

Download
memory/2016-17-0x00000000012A0000-0x00000000012CA000-memory.dmp

Filesize
168KB

Download
memory/2600-11-0x00000000002D0000-0x00000000002FA000-memory.dmp

Filesize
168KB

Download
memory/2656-0-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

Filesize
4KB

Download
memory/2656-1-0x0000000000E90000-0x0000000000EBA000-memory.dmp

Filesize
168KB

Download
memory/2656-6-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download
memory/2656-7-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

Filesize
4KB

Download
memory/2656-12-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads