xworm | 474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b

General

Target

XClient.exe
Size

78KB
MD5

a25ac87d1fea176e553d1892811b8c8d
SHA1

9b624bebe8d344209f6c3d4fa160becb9a3e11dc
SHA256

474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b
SHA512

7a137d4ccc1766351f2ea1a20f4866491b36edaff4902c54d5edf1b69fe22fcae200a14a8d779fbb439f190bd070e91e2bdcbd7b7d2b508901167586a4b31db6
SSDEEP

1536:MeQgyB1wb3whRLC7CkbPOOsexl6FdyOGL8jRBYb:Bp61wbKkbPumOGL8jRBY

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

37.114.39.24:7000

Attributes

Install_directory
%AppData%
install_file
winxd9.exe
telegram
https://api.telegram.org/bot7574778549:AAEqgXDQvR3Aj3QmQtNrJtln4Nkd7sNBWVc/sendMessage?chat_id=6855762756

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2760-1-0x0000000001150000-0x000000000116A000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2756	powershell.exe
2896	powershell.exe
2676	powershell.exe
748	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winxd9.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winxd9.lnk	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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\winxd9 = "C:\\Users\\Admin\\AppData\\Roaming\\winxd9.exe"	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
2416	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2756	powershell.exe
2896	powershell.exe
2676	powershell.exe
748	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2760	XClient.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2896	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	748	powershell.exe
Token: SeDebugPrivilege	2760	XClient.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2756	2760	XClient.exe	31
PID 2760 wrote to memory of 2756	2760	XClient.exe	31
PID 2760 wrote to memory of 2756	2760	XClient.exe	31
PID 2760 wrote to memory of 2896	2760	XClient.exe	33
PID 2760 wrote to memory of 2896	2760	XClient.exe	33
PID 2760 wrote to memory of 2896	2760	XClient.exe	33
PID 2760 wrote to memory of 2676	2760	XClient.exe	35
PID 2760 wrote to memory of 2676	2760	XClient.exe	35
PID 2760 wrote to memory of 2676	2760	XClient.exe	35
PID 2760 wrote to memory of 748	2760	XClient.exe	37
PID 2760 wrote to memory of 748	2760	XClient.exe	37
PID 2760 wrote to memory of 748	2760	XClient.exe	37
PID 2760 wrote to memory of 2416	2760	XClient.exe	39
PID 2760 wrote to memory of 2416	2760	XClient.exe	39
PID 2760 wrote to memory of 2416	2760	XClient.exe	39

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:2760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2896
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\winxd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2676
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'winxd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:748
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "winxd9" /tr "C:\Users\Admin\AppData\Roaming\winxd9.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
a9ca860f5230797307688c742d9a5e84

SHA1
ecbfe22da7cb2788cb0e4ca571546832535fb35e

SHA256
b2fe6aa341875f0430d55cd73a81839159559866e2d0b4f2e4ca829972c4c0ac

SHA512
33d15127aac3fbeb70528e4d92bf54dd32974baeaab93aad925c3bc582619db789880cf72f6882b29c32287520d5163d4c6ec2834f8eb1482f3e0abfc876b0ee

Download Submit
memory/2756-6-0x00000000029A0000-0x0000000002A20000-memory.dmp

Filesize
512KB

Download
memory/2756-7-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/2756-8-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download
memory/2760-0-0x000007FEF5823000-0x000007FEF5824000-memory.dmp

Filesize
4KB

Download
memory/2760-1-0x0000000001150000-0x000000000116A000-memory.dmp

Filesize
104KB

Download
memory/2760-30-0x000000001AC10000-0x000000001AC90000-memory.dmp

Filesize
512KB

Download
memory/2760-31-0x000007FEF5823000-0x000007FEF5824000-memory.dmp

Filesize
4KB

Download
memory/2760-32-0x000000001AC10000-0x000000001AC90000-memory.dmp

Filesize
512KB

Download
memory/2896-14-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2896-15-0x0000000001E00000-0x0000000001E08000-memory.dmp

Filesize
32KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads