xworm | 3242b26e5d8ebbe6993b03288ae30e5dfc7f0d93f06d8b4a225c184f24bd3034

General

Target

Mode.exe
Size

45KB
MD5

692bb1be0c680ec225c34bd446ead322
SHA1

813345d33a051c297f342ae668e7a32b3e40837b
SHA256

3242b26e5d8ebbe6993b03288ae30e5dfc7f0d93f06d8b4a225c184f24bd3034
SHA512

2818761e76ad5f7aaf933a857d96d7080ea91653624d923b965c07e224b629b453f5f93c64880a4c9b1f2d55cfff97254c843160c97c169e7437912b80cd04ec
SSDEEP

768:CurlDweV3OOVbADM9W1v9NfgkBpuAuREcNclYlVvD4xeVhKfkeLbFEPa9pvp16i4:CADweQKADMkV9GkSAcRaelZrO1/FJ9Nw

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

5.tcp.eu.ngrok.io:17399

Mutex

RxBZSfahWZHZu4kD

Attributes

Install_directory
%AppData%
install_file
svhost.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2208-1-0x0000000001000000-0x0000000001012000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\svhost.exe	family_xworm
behavioral1/memory/1316-36-0x0000000001350000-0x0000000001362000-memory.dmp	family_xworm
behavioral1/memory/700-39-0x0000000000110000-0x0000000000122000-memory.dmp	family_xworm
behavioral1/memory/1328-41-0x00000000011F0000-0x0000000001202000-memory.dmp	family_xworm

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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2976 powershell.exe
2864 powershell.exe
2552 powershell.exe
2264 powershell.exe

pid	process
2976	powershell.exe
2864	powershell.exe
2552	powershell.exe
2264	powershell.exe

Drops startup file 2 IoCs

Processes:

Mode.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	Mode.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	Mode.exe

Executes dropped EXE 3 IoCs

Processes:

svhost.exesvhost.exesvhost.exe

pid process

1316 svhost.exe
700 svhost.exe
1328 svhost.exe

pid	process
1316	svhost.exe
700	svhost.exe
1328	svhost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Mode.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe"	Mode.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service
T1102

Processes:

flow ioc

6 5.tcp.eu.ngrok.io
9 5.tcp.eu.ngrok.io
11 5.tcp.eu.ngrok.io
19 5.tcp.eu.ngrok.io
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2728 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeMode.exe

pid process

2976 powershell.exe
2864 powershell.exe
2552 powershell.exe
2264 powershell.exe
2208 Mode.exe

flow	ioc
6	5.tcp.eu.ngrok.io
9	5.tcp.eu.ngrok.io
11	5.tcp.eu.ngrok.io
19	5.tcp.eu.ngrok.io

flow	ioc
4	ip-api.com

pid	process
2728	schtasks.exe

pid	process
2976	powershell.exe
2864	powershell.exe
2552	powershell.exe
2264	powershell.exe
2208	Mode.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

Mode.exepowershell.exepowershell.exepowershell.exepowershell.exesvhost.exesvhost.exesvhost.exe

description	pid	process
Token: SeDebugPrivilege	2208	Mode.exe
Token: SeDebugPrivilege	2976	powershell.exe
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeDebugPrivilege	2552	powershell.exe
Token: SeDebugPrivilege	2264	powershell.exe
Token: SeDebugPrivilege	2208	Mode.exe
Token: SeDebugPrivilege	1316	svhost.exe
Token: SeDebugPrivilege	700	svhost.exe
Token: SeDebugPrivilege	1328	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Mode.exe

pid process

2208 Mode.exe

pid	process
2208	Mode.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

Mode.exetaskeng.exe

description	pid	process	target process
PID 2208 wrote to memory of 2976	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2976	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2976	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2864	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2864	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2864	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2552	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2552	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2552	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2264	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2264	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2264	2208	Mode.exe	powershell.exe
PID 2208 wrote to memory of 2728	2208	Mode.exe	schtasks.exe
PID 2208 wrote to memory of 2728	2208	Mode.exe	schtasks.exe
PID 2208 wrote to memory of 2728	2208	Mode.exe	schtasks.exe
PID 2744 wrote to memory of 1316	2744	taskeng.exe	svhost.exe
PID 2744 wrote to memory of 1316	2744	taskeng.exe	svhost.exe
PID 2744 wrote to memory of 1316	2744	taskeng.exe	svhost.exe
PID 2744 wrote to memory of 700	2744	taskeng.exe	svhost.exe
PID 2744 wrote to memory of 700	2744	taskeng.exe	svhost.exe
PID 2744 wrote to memory of 700	2744	taskeng.exe	svhost.exe
PID 2744 wrote to memory of 1328	2744	taskeng.exe	svhost.exe
PID 2744 wrote to memory of 1328	2744	taskeng.exe	svhost.exe
PID 2744 wrote to memory of 1328	2744	taskeng.exe	svhost.exe

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\Mode.exe
"C:\Users\Admin\AppData\Local\Temp\Mode.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2208

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\Mode.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2976

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Mode.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2864

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\svhost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2552

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2264

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\Users\Admin\AppData\Roaming\svhost.exe"
2⤵
- Creates scheduled task(s)
PID:2728

C:\Windows\system32\taskeng.exe
taskeng.exe {9FF045FB-A57B-42BF-A970-24A803A313D5} S-1-5-21-481678230-3773327859-3495911762-1000:UIBNQNMA\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2744

C:\Users\Admin\AppData\Roaming\svhost.exe
C:\Users\Admin\AppData\Roaming\svhost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1316

C:\Users\Admin\AppData\Roaming\svhost.exe
C:\Users\Admin\AppData\Roaming\svhost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:700

C:\Users\Admin\AppData\Roaming\svhost.exe
C:\Users\Admin\AppData\Roaming\svhost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1328

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize
7KB

MD5
53685b517a73eecc64ce5594042ef45f

SHA1
fdea0fa312342482ba35f23838304904c109d0b4

SHA256
215d04ca7a97bdfbeeccff9ca26af65fc04420240d5119982138c2d3a8b46cfd

SHA512
18d31c76784de04adfd7f9ff3cc9caca34ffe1191e076473d995a3a3bb999d74b481f59302096fddff8c096600139bdc6838881908dda16236c7ff949af9d6f9

Download Submit
C:\Users\Admin\AppData\Roaming\svhost.exe
Filesize
45KB

MD5
692bb1be0c680ec225c34bd446ead322

SHA1
813345d33a051c297f342ae668e7a32b3e40837b

SHA256
3242b26e5d8ebbe6993b03288ae30e5dfc7f0d93f06d8b4a225c184f24bd3034

SHA512
2818761e76ad5f7aaf933a857d96d7080ea91653624d923b965c07e224b629b453f5f93c64880a4c9b1f2d55cfff97254c843160c97c169e7437912b80cd04ec

Download Submit
memory/700-39-0x0000000000110000-0x0000000000122000-memory.dmp

Filesize
72KB

Download
memory/1316-36-0x0000000001350000-0x0000000001362000-memory.dmp

Filesize
72KB

Download
memory/1328-41-0x00000000011F0000-0x0000000001202000-memory.dmp

Filesize
72KB

Download
memory/2208-31-0x000007FEF6063000-0x000007FEF6064000-memory.dmp

Filesize
4KB

Download
memory/2208-0-0x000007FEF6063000-0x000007FEF6064000-memory.dmp

Filesize
4KB

Download
memory/2208-32-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2208-2-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2208-1-0x0000000001000000-0x0000000001012000-memory.dmp

Filesize
72KB

Download
memory/2864-15-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2864-16-0x00000000027F0000-0x00000000027F8000-memory.dmp

Filesize
32KB

Download
memory/2976-9-0x0000000002220000-0x0000000002228000-memory.dmp

Filesize
32KB

Download
memory/2976-8-0x000000001B7A0000-0x000000001BA82000-memory.dmp

Filesize
2.9MB

Download
memory/2976-7-0x0000000002F30000-0x0000000002FB0000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads