xworm | 282393aa38b758eb429d55acbfc2df1638741ee18eaa2fccf1ea638e396c1606

General

Target

XClient.exe
Size

43KB
MD5

b5cc96820c23ae9241f31f69ae0f4bd1
SHA1

2b34b1d40aaee3ad827f2f52c607078331bfa5d0
SHA256

282393aa38b758eb429d55acbfc2df1638741ee18eaa2fccf1ea638e396c1606
SHA512

3a08f0fa346c5a3823154d549c997aad2932c34c4d367729c89802a06029ae8dcdba9b053b93ebb279505f3aa96cdfa0d1addccd13065959be4fcec4553c15b0
SSDEEP

768:dOWZMZifma/E0s5qYhA4J1QD8PReLOY9bdJ5Zua6GhOOw2joI:dRv/ruAApiP9bf5V6GsOnjoI

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

23.ip.gl.ply.gg:51353

<Xwormmm>:1

Mutex

BsBmfJJT3ix8SkJS

Attributes

Install_directory
%LocalAppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2032-1-0x0000000000A50000-0x0000000000A62000-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
2720	powershell.exe
2300	powershell.exe
2384	powershell.exe
1964	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.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
1252	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2384	powershell.exe
1964	powershell.exe
2720	powershell.exe
2300	powershell.exe
2032	XClient.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2032	XClient.exe
Token: SeDebugPrivilege	2384	powershell.exe
Token: SeDebugPrivilege	1964	powershell.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2300	powershell.exe
Token: SeDebugPrivilege	2032	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2032	XClient.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 2384	2032	XClient.exe	30
PID 2032 wrote to memory of 2384	2032	XClient.exe	30
PID 2032 wrote to memory of 2384	2032	XClient.exe	30
PID 2032 wrote to memory of 1964	2032	XClient.exe	32
PID 2032 wrote to memory of 1964	2032	XClient.exe	32
PID 2032 wrote to memory of 1964	2032	XClient.exe	32
PID 2032 wrote to memory of 2720	2032	XClient.exe	34
PID 2032 wrote to memory of 2720	2032	XClient.exe	34
PID 2032 wrote to memory of 2720	2032	XClient.exe	34
PID 2032 wrote to memory of 2300	2032	XClient.exe	36
PID 2032 wrote to memory of 2300	2032	XClient.exe	36
PID 2032 wrote to memory of 2300	2032	XClient.exe	36
PID 2032 wrote to memory of 1252	2032	XClient.exe	38
PID 2032 wrote to memory of 1252	2032	XClient.exe	38
PID 2032 wrote to memory of 1252	2032	XClient.exe	38
PID 2032 wrote to memory of 632	2032	XClient.exe	40
PID 2032 wrote to memory of 632	2032	XClient.exe	40
PID 2032 wrote to memory of 632	2032	XClient.exe	40

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2032
- 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:2384
- 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:1964
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2300
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1252
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2032 -s 1240
  2⤵
  PID:632

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
5aad1497f4e61ed7872aa95f520815a2

SHA1
e1c34d257a3ffa11cd6dd96896eb9b5663f769ac

SHA256
84064b944d05a75d10afcadb99434c4a23dafc720640ed2a6546f6bb24e4e1a5

SHA512
c37d5867e29722c42c2b51fc082cc2d60e9592b6d1619c26c2988266e285cd32a00a4bf05fabd96466ec244452352e052b6c1b0a05a5443d910b32beb150ddd8

Download Submit
memory/1964-14-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/1964-15-0x0000000002000000-0x0000000002008000-memory.dmp

Filesize
32KB

Download
memory/2032-0-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/2032-1-0x0000000000A50000-0x0000000000A62000-memory.dmp

Filesize
72KB

Download
memory/2384-6-0x0000000002B50000-0x0000000002BD0000-memory.dmp

Filesize
512KB

Download
memory/2384-7-0x000000001B760000-0x000000001BA42000-memory.dmp

Filesize
2.9MB

Download
memory/2384-8-0x0000000001FC0000-0x0000000001FC8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads