xworm | 929680b8659e4c1c1211bfa32862fe648a37a030136f6d4e3d343531582f60a1

General

Target

XClient.exe
Size

78KB
MD5

f304f5522655bcc6b8cd42e8cc5257b2
SHA1

348c7528cdf90e81ed68b8539d9992da130880ec
SHA256

929680b8659e4c1c1211bfa32862fe648a37a030136f6d4e3d343531582f60a1
SHA512

f4e3131a9caed15e84032c6ff3ae5862340596c7759b52782b8816f4fd5b26335d0a48ab9ad715158dbc0a7679cecfec869453292aca23851ad569674959274c
SSDEEP

1536:yXXX4+cmalnBwczCKH6eIPYDlgSvLJahib3nPtCbEiUv5my6oOf/OCc2en+C:yIGQnBwI7aN2nvNb3nwEiUB0f/O/l+C

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

blood-pattern.gl.at.ply.gg:24558

Attributes

Install_directory
%AppData%
install_file
USB.exe
telegram
https://api.telegram.org/bot7704029346:AAHPre1lXQa0UfPCpOUXJZ9UXA9mFxvH4Gk/sendMessage?chat_id=7590668020

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2084-1-0x00000000001C0000-0x00000000001DA000-memory.dmp	family_xworm
behavioral1/files/0x000c000000012033-33.dat	family_xworm
behavioral1/memory/1964-35-0x0000000000F90000-0x0000000000FAA000-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
3040	powershell.exe
2776	powershell.exe
2804	powershell.exe
2872	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
1964	security
1316	security
2100	security

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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\security = "C:\\Users\\Admin\\AppData\\Roaming\\security"	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
2648	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2084	XClient.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3040	powershell.exe
2776	powershell.exe
2804	powershell.exe
2872	powershell.exe
2084	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2084	XClient.exe
Token: SeDebugPrivilege	3040	powershell.exe
Token: SeDebugPrivilege	2776	powershell.exe
Token: SeDebugPrivilege	2804	powershell.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	2084	XClient.exe
Token: SeDebugPrivilege	1964	security
Token: SeDebugPrivilege	1316	security

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2084	XClient.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 3040	2084	XClient.exe	30
PID 2084 wrote to memory of 3040	2084	XClient.exe	30
PID 2084 wrote to memory of 3040	2084	XClient.exe	30
PID 2084 wrote to memory of 2776	2084	XClient.exe	32
PID 2084 wrote to memory of 2776	2084	XClient.exe	32
PID 2084 wrote to memory of 2776	2084	XClient.exe	32
PID 2084 wrote to memory of 2804	2084	XClient.exe	34
PID 2084 wrote to memory of 2804	2084	XClient.exe	34
PID 2084 wrote to memory of 2804	2084	XClient.exe	34
PID 2084 wrote to memory of 2872	2084	XClient.exe	36
PID 2084 wrote to memory of 2872	2084	XClient.exe	36
PID 2084 wrote to memory of 2872	2084	XClient.exe	36
PID 2084 wrote to memory of 2648	2084	XClient.exe	38
PID 2084 wrote to memory of 2648	2084	XClient.exe	38
PID 2084 wrote to memory of 2648	2084	XClient.exe	38
PID 2020 wrote to memory of 1964	2020	taskeng.exe	43
PID 2020 wrote to memory of 1964	2020	taskeng.exe	43
PID 2020 wrote to memory of 1964	2020	taskeng.exe	43
PID 2020 wrote to memory of 1316	2020	taskeng.exe	44
PID 2020 wrote to memory of 1316	2020	taskeng.exe	44
PID 2020 wrote to memory of 1316	2020	taskeng.exe	44
PID 2020 wrote to memory of 2100	2020	taskeng.exe	45
PID 2020 wrote to memory of 2100	2020	taskeng.exe	45
PID 2020 wrote to memory of 2100	2020	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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2084
- 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:3040
- 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:2776
- 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\security'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2804
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'security'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2872
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "security" /tr "C:\Users\Admin\AppData\Roaming\security"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2648

C:\Windows\system32\taskeng.exe
taskeng.exe {058BF636-4519-4BE9-87D1-376D791BE401} S-1-5-21-312935884-697965778-3955649944-1000:MXQFNXLT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Users\Admin\AppData\Roaming\security
  C:\Users\Admin\AppData\Roaming\security
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1964
- C:\Users\Admin\AppData\Roaming\security
  C:\Users\Admin\AppData\Roaming\security
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1316
- C:\Users\Admin\AppData\Roaming\security
  C:\Users\Admin\AppData\Roaming\security
  2⤵
  - Executes dropped EXE
  PID:2100

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
812da04e3a125b24c0ff472910652a4c

SHA1
765086089b400ec3fd0c044128299f94b12d91be

SHA256
b745e486de26cd686359c6a1c8766084ee93d98e8ccc7a386ee89ab87b76f7d2

SHA512
dee59132fb59898c24d0dc5359802f5c2ff8d986f1de545ca83228dbde6c83ba5c81d09a312478d579e4c3a9e7a033af2f878f329989e9ccab35637dd1b79366

Download Submit
C:\Users\Admin\AppData\Roaming\security

Filesize
78KB

MD5
f304f5522655bcc6b8cd42e8cc5257b2

SHA1
348c7528cdf90e81ed68b8539d9992da130880ec

SHA256
929680b8659e4c1c1211bfa32862fe648a37a030136f6d4e3d343531582f60a1

SHA512
f4e3131a9caed15e84032c6ff3ae5862340596c7759b52782b8816f4fd5b26335d0a48ab9ad715158dbc0a7679cecfec869453292aca23851ad569674959274c

Download Submit
memory/1964-35-0x0000000000F90000-0x0000000000FAA000-memory.dmp

Filesize
104KB

Download
memory/2084-29-0x000000001A7F0000-0x000000001A870000-memory.dmp

Filesize
512KB

Download
memory/2084-1-0x00000000001C0000-0x00000000001DA000-memory.dmp

Filesize
104KB

Download
memory/2084-31-0x000000001A7F0000-0x000000001A870000-memory.dmp

Filesize
512KB

Download
memory/2084-0-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

Filesize
4KB

Download
memory/2084-30-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

Filesize
4KB

Download
memory/2776-14-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2776-15-0x00000000003F0000-0x00000000003F8000-memory.dmp

Filesize
32KB

Download
memory/3040-8-0x0000000002990000-0x0000000002998000-memory.dmp

Filesize
32KB

Download
memory/3040-7-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/3040-6-0x0000000002CF0000-0x0000000002D70000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads