xworm | 3c4947c30053221ba3947e03eec50eda97a6119aa0fb5a435d73e417744193f3

General

Target

MXEYJ_XClient.exe
Size

237KB
MD5

50f059bf53d9b59728eeb0bdecdf40e7
SHA1

892d6c2bc4efeee06c747d0cf3dd5f26a087398b
SHA256

3c4947c30053221ba3947e03eec50eda97a6119aa0fb5a435d73e417744193f3
SHA512

b5dcf35a0c26d20f62d46e88af8431a90d474ce3e0ce70716a1c0b0b7d87190a2dc74fadeca2ae6952aad85e6bf61c7336351e0d09ffbaaf02e36b25361c2331
SSDEEP

3072:azrtwZdQ+bhHvnOPebcEm8SKfbzxcwg7es6/Vsb8VKTu549oJMfF/H9N3Ky9NzLP:CwvxbDmUhcX7elbKTua9bfF/H9d9n

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

november-cope.gl.at.ply.gg:37025

Attributes

Install_directory
%ProgramData%
install_file
update.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1968-1-0x0000000000D20000-0x0000000000D60000-memory.dmp	family_xworm
behavioral1/files/0x0009000000012117-35.dat	family_xworm
behavioral1/memory/2932-37-0x00000000012E0000-0x0000000001320000-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
2516	powershell.exe
2756	powershell.exe
2832	powershell.exe
2652	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2932	update.exe
1192	update.exe
1520	update.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\update = "C:\\ProgramData\\update.exe"	MXEYJ_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
996	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2516	powershell.exe
2756	powershell.exe
2832	powershell.exe
2652	powershell.exe
1968	MXEYJ_XClient.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	MXEYJ_XClient.exe
Token: SeDebugPrivilege	2516	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	1968	MXEYJ_XClient.exe
Token: SeDebugPrivilege	2932	update.exe
Token: SeDebugPrivilege	1192	update.exe
Token: SeDebugPrivilege	1520	update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1968	MXEYJ_XClient.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2516	1968	MXEYJ_XClient.exe	30
PID 1968 wrote to memory of 2516	1968	MXEYJ_XClient.exe	30
PID 1968 wrote to memory of 2516	1968	MXEYJ_XClient.exe	30
PID 1968 wrote to memory of 2756	1968	MXEYJ_XClient.exe	32
PID 1968 wrote to memory of 2756	1968	MXEYJ_XClient.exe	32
PID 1968 wrote to memory of 2756	1968	MXEYJ_XClient.exe	32
PID 1968 wrote to memory of 2832	1968	MXEYJ_XClient.exe	34
PID 1968 wrote to memory of 2832	1968	MXEYJ_XClient.exe	34
PID 1968 wrote to memory of 2832	1968	MXEYJ_XClient.exe	34
PID 1968 wrote to memory of 2652	1968	MXEYJ_XClient.exe	36
PID 1968 wrote to memory of 2652	1968	MXEYJ_XClient.exe	36
PID 1968 wrote to memory of 2652	1968	MXEYJ_XClient.exe	36
PID 1968 wrote to memory of 996	1968	MXEYJ_XClient.exe	38
PID 1968 wrote to memory of 996	1968	MXEYJ_XClient.exe	38
PID 1968 wrote to memory of 996	1968	MXEYJ_XClient.exe	38
PID 2008 wrote to memory of 2932	2008	taskeng.exe	43
PID 2008 wrote to memory of 2932	2008	taskeng.exe	43
PID 2008 wrote to memory of 2932	2008	taskeng.exe	43
PID 2008 wrote to memory of 1192	2008	taskeng.exe	44
PID 2008 wrote to memory of 1192	2008	taskeng.exe	44
PID 2008 wrote to memory of 1192	2008	taskeng.exe	44
PID 2008 wrote to memory of 1520	2008	taskeng.exe	45
PID 2008 wrote to memory of 1520	2008	taskeng.exe	45
PID 2008 wrote to memory of 1520	2008	taskeng.exe	45

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\MXEYJ_XClient.exe
"C:\Users\Admin\AppData\Local\Temp\MXEYJ_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:1968
- 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\MXEYJ_XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2516
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'MXEYJ_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 -ExclusionPath 'C:\ProgramData\update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2832
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2652
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "update" /tr "C:\ProgramData\update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:996

C:\Windows\system32\taskeng.exe
taskeng.exe {E6E034DB-181D-4FF4-83FE-64C813592167} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2008
- C:\ProgramData\update.exe
  C:\ProgramData\update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2932
- C:\ProgramData\update.exe
  C:\ProgramData\update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1192
- C:\ProgramData\update.exe
  C:\ProgramData\update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1520

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:\ProgramData\update.exe

Filesize
237KB

MD5
50f059bf53d9b59728eeb0bdecdf40e7

SHA1
892d6c2bc4efeee06c747d0cf3dd5f26a087398b

SHA256
3c4947c30053221ba3947e03eec50eda97a6119aa0fb5a435d73e417744193f3

SHA512
b5dcf35a0c26d20f62d46e88af8431a90d474ce3e0ce70716a1c0b0b7d87190a2dc74fadeca2ae6952aad85e6bf61c7336351e0d09ffbaaf02e36b25361c2331

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

Filesize
7KB

MD5
ffd23b56edd9ed89b2b3012c791d7006

SHA1
b87f4139efe6e5858b82dac7e4a9aef9fb02f420

SHA256
9515623cd04e9f42acc843e3144828b65d0f802cc74931912a9c7c4e6bb62a59

SHA512
ffb640dc811dd6eb97c407203be66eaa23198b0b9cc67afef4c79f6fe269e27c39b7ce552dda583a37e7e290254b4ec1bd079d3915050b4310f773b2e540d70c

Download Submit
memory/1968-1-0x0000000000D20000-0x0000000000D60000-memory.dmp

Filesize
256KB

Download
memory/1968-0-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download
memory/1968-33-0x000000001ADA0000-0x000000001AE20000-memory.dmp

Filesize
512KB

Download
memory/1968-32-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download
memory/1968-31-0x000000001ADA0000-0x000000001AE20000-memory.dmp

Filesize
512KB

Download
memory/2516-7-0x000000001B580000-0x000000001B862000-memory.dmp

Filesize
2.9MB

Download
memory/2516-8-0x0000000002760000-0x0000000002768000-memory.dmp

Filesize
32KB

Download
memory/2516-6-0x00000000027B0000-0x0000000002830000-memory.dmp

Filesize
512KB

Download
memory/2756-15-0x00000000026F0000-0x00000000026F8000-memory.dmp

Filesize
32KB

Download
memory/2756-14-0x000000001B750000-0x000000001BA32000-memory.dmp

Filesize
2.9MB

Download
memory/2932-37-0x00000000012E0000-0x0000000001320000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads