xworm | 4ecf9e1e2dc279254aefa5a1e3befa0b7d46e9a255fc153aa36fc46329a881ee

General

Target

test.exe
Size

41KB
MD5

14ba5e24c48fdb89869f74ef6b39fb91
SHA1

ee472017864227ba1b16bd0becb71e213012b4af
SHA256

4ecf9e1e2dc279254aefa5a1e3befa0b7d46e9a255fc153aa36fc46329a881ee
SHA512

ead6a3c7156322b99c48f39ad808661c6c0758017c07ddb542c067f4b3746f90e5b8158b7e9bc68f85e534cc83b7da5c74496e546740cfa3d4ff0eecf6fa2dbc
SSDEEP

768:FV396FPL5Qskay6WJF5Pa9ORM6cOwhG33X7N:btojyfacFY9AM6cOwQH5

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

vshostupdater.duckdns.org:1177

http://vshostupdater.duckdns.org:1177

Mutex

wUXlZfe2ZEy8St4a

Attributes

Install_directory
%LocalAppData%
install_file
Steam_Service.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2576-1-0x0000000000F20000-0x0000000000F30000-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
2132	powershell.exe
1120	powershell.exe
380	powershell.exe
1744	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	test.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Steam_Service = "C:\\Users\\Admin\\AppData\\Local\\Steam_Service.exe"	test.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
19	ip-api.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
4992	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2132	powershell.exe
2132	powershell.exe
1120	powershell.exe
1120	powershell.exe
380	powershell.exe
380	powershell.exe
1744	powershell.exe
1744	powershell.exe
2576	test.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2576	test.exe
Token: SeDebugPrivilege	2132	powershell.exe
Token: SeDebugPrivilege	1120	powershell.exe
Token: SeDebugPrivilege	380	powershell.exe
Token: SeDebugPrivilege	1744	powershell.exe
Token: SeDebugPrivilege	2576	test.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2576	test.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2576 wrote to memory of 2132	2576	test.exe	92
PID 2576 wrote to memory of 2132	2576	test.exe	92
PID 2576 wrote to memory of 1120	2576	test.exe	94
PID 2576 wrote to memory of 1120	2576	test.exe	94
PID 2576 wrote to memory of 380	2576	test.exe	97
PID 2576 wrote to memory of 380	2576	test.exe	97
PID 2576 wrote to memory of 1744	2576	test.exe	99
PID 2576 wrote to memory of 1744	2576	test.exe	99
PID 2576 wrote to memory of 4992	2576	test.exe	101
PID 2576 wrote to memory of 4992	2576	test.exe	101

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\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2576
- 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\test.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2132
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'test.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1120
- 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\Steam_Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:380
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Steam_Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1744
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Steam_Service" /tr "C:\Users\Admin\AppData\Local\Steam_Service.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4992

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
110b59ca4d00786d0bde151d21865049

SHA1
557e730d93fdf944a0cad874022df1895fb5b2e2

SHA256
77f69011c214ea5a01fd2035d781914c4893aee66d784deadc22179eadfdf77f

SHA512
cb55ac6eca50f4427718bace861679c88b2fdfea94d30209e8d61ca73a6ce9f8c4b5334922d2660a829b0636d20cbdf3bae1497c920e604efe6c636019feb10e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
120c6c9af4de2accfcff2ed8c3aab1af

SHA1
504f64ae4ac9c4fe308a6a50be24fe464f3dad95

SHA256
461315e4057c3fa4d0031df3f7e6511914f082698b6c41f5c2ada831ceffb222

SHA512
041712168718dff702da8203b4089b2e57db98ce503b8ecf36809dec0cd7a595a0d427caa960bc1bd29cbedc85ad3262773f2077a476b85aca387d48f7b07ba2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_35sxom3u.tnd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2132-18-0x00007FFDDEDD0000-0x00007FFDDF891000-memory.dmp

Filesize
10.8MB

Download
memory/2132-14-0x00007FFDDEDD0000-0x00007FFDDF891000-memory.dmp

Filesize
10.8MB

Download
memory/2132-15-0x00007FFDDEDD0000-0x00007FFDDF891000-memory.dmp

Filesize
10.8MB

Download
memory/2132-13-0x00007FFDDEDD0000-0x00007FFDDF891000-memory.dmp

Filesize
10.8MB

Download
memory/2132-12-0x000001F5AC730000-0x000001F5AC752000-memory.dmp

Filesize
136KB

Download
memory/2576-0-0x00007FFDDEDD3000-0x00007FFDDEDD5000-memory.dmp

Filesize
8KB

Download
memory/2576-2-0x00007FFDDEDD0000-0x00007FFDDF891000-memory.dmp

Filesize
10.8MB

Download
memory/2576-42-0x00007FFDDEDD3000-0x00007FFDDEDD5000-memory.dmp

Filesize
8KB

Download
memory/2576-1-0x0000000000F20000-0x0000000000F30000-memory.dmp

Filesize
64KB

Download
memory/2576-55-0x00007FFDDEDD0000-0x00007FFDDF891000-memory.dmp

Filesize
10.8MB

Download
memory/2576-56-0x000000001BBF0000-0x000000001BBFC000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads