xworm | 378d29703f868965fb7f302df6ba41c86d082457cf1d1ac4a3a03439667ddb8b

General

Target

XClient.exe
Size

77KB
MD5

ef4458792b0cb6ac36ec855d8fa22746
SHA1

0b1df777312b444dc0fecc83a2961d8184424f29
SHA256

378d29703f868965fb7f302df6ba41c86d082457cf1d1ac4a3a03439667ddb8b
SHA512

14eaaf133c1a9e863b644962ae48b9c1d46529d8919ef286ca07ee8cc142b28d0bb49683cf85110953f4ca6476415e0286421d2e931b5e259a6cc1b1e6a5ab65
SSDEEP

1536:cnEvrcA42wxrCQBvHbzaRnbkEKTwYR564OXHKG2:gQQWbkPw6DOXN2

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

moving-agenda.gl.at.ply.gg:7000

Attributes

Install_directory
%ProgramData%
install_file
conhost.exe

Signatures

Detect Xworm Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2276-1-0x0000000000CE0000-0x0000000000CFA000-memory.dmp	family_xworm
C:\ProgramData\conhost.exe	family_xworm
behavioral1/memory/1560-34-0x00000000001C0000-0x00000000001DA000-memory.dmp	family_xworm
behavioral1/memory/2716-40-0x0000000000CF0000-0x0000000000D0A000-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

2652 powershell.exe
2544 powershell.exe
2832 powershell.exe
1552 powershell.exe

pid	process
2652	powershell.exe
2544	powershell.exe
2832	powershell.exe
1552	powershell.exe

Drops startup file 2 IoCs

Processes:

XClient.exe

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

Executes dropped EXE 3 IoCs

Processes:

conhost.execonhost.execonhost.exe

pid process

1560 conhost.exe
1660 conhost.exe
2716 conhost.exe

pid	process
1560	conhost.exe
1660	conhost.exe
2716	conhost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XClient.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\ProgramData\\conhost.exe"	XClient.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.

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

112 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient.exe

pid process

2652 powershell.exe
2544 powershell.exe
2832 powershell.exe
1552 powershell.exe
2276 XClient.exe

flow	ioc
4	ip-api.com

pid	process
112	schtasks.exe

pid	process
2652	powershell.exe
2544	powershell.exe
2832	powershell.exe
1552	powershell.exe
2276	XClient.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

XClient.exepowershell.exepowershell.exepowershell.exepowershell.execonhost.execonhost.execonhost.exe

description	pid	process
Token: SeDebugPrivilege	2276	XClient.exe
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	2544	powershell.exe
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeDebugPrivilege	1552	powershell.exe
Token: SeDebugPrivilege	2276	XClient.exe
Token: SeDebugPrivilege	1560	conhost.exe
Token: SeDebugPrivilege	1660	conhost.exe
Token: SeDebugPrivilege	2716	conhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid process

2276 XClient.exe

pid	process
2276	XClient.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

XClient.exetaskeng.exe

description	pid	process	target process
PID 2276 wrote to memory of 2652	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 2652	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 2652	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 2544	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 2544	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 2544	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 2832	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 2832	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 2832	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 1552	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 1552	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 1552	2276	XClient.exe	powershell.exe
PID 2276 wrote to memory of 112	2276	XClient.exe	schtasks.exe
PID 2276 wrote to memory of 112	2276	XClient.exe	schtasks.exe
PID 2276 wrote to memory of 112	2276	XClient.exe	schtasks.exe
PID 1604 wrote to memory of 1560	1604	taskeng.exe	conhost.exe
PID 1604 wrote to memory of 1560	1604	taskeng.exe	conhost.exe
PID 1604 wrote to memory of 1560	1604	taskeng.exe	conhost.exe
PID 1604 wrote to memory of 1660	1604	taskeng.exe	conhost.exe
PID 1604 wrote to memory of 1660	1604	taskeng.exe	conhost.exe
PID 1604 wrote to memory of 1660	1604	taskeng.exe	conhost.exe
PID 1604 wrote to memory of 2716	1604	taskeng.exe	conhost.exe
PID 1604 wrote to memory of 2716	1604	taskeng.exe	conhost.exe
PID 1604 wrote to memory of 2716	1604	taskeng.exe	conhost.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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.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:2276

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\XClient.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2652

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2544

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\conhost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2832

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'conhost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1552

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "conhost" /tr "C:\ProgramData\conhost.exe"
2⤵
- Creates scheduled task(s)
PID:112

C:\Windows\system32\taskeng.exe
taskeng.exe {A6DC4480-DCB7-44F8-9791-5B96176D6EF3} S-1-5-21-3452737119-3959686427-228443150-1000:QGTQZTRE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1604

C:\ProgramData\conhost.exe
C:\ProgramData\conhost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1560

C:\ProgramData\conhost.exe
C:\ProgramData\conhost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1660

C:\ProgramData\conhost.exe
C:\ProgramData\conhost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2716

Network

MITRE ATT&CK Matrix ATT&CK v13

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

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\ProgramData\conhost.exe
Filesize
77KB

MD5
ef4458792b0cb6ac36ec855d8fa22746

SHA1
0b1df777312b444dc0fecc83a2961d8184424f29

SHA256
378d29703f868965fb7f302df6ba41c86d082457cf1d1ac4a3a03439667ddb8b

SHA512
14eaaf133c1a9e863b644962ae48b9c1d46529d8919ef286ca07ee8cc142b28d0bb49683cf85110953f4ca6476415e0286421d2e931b5e259a6cc1b1e6a5ab65

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

MD5
56700d63e2ab9aa40b358bcdbb1fcd42

SHA1
52f229da816d01fb953bad11871d8eb737da09e0

SHA256
14bd80d96afeb624dd6eba74d03a281ad0db7e45f979a9fce26993bd3845b2b7

SHA512
299c92d8387ad1af3f4cb564ae5348e77b3e69d652369c5511e60dca9c3fd5256dc050da656857d1ee3bce3bf6f4e57abdb384431eb6b022ba97e3e2f0c37bd9

Download Submit
memory/1560-34-0x00000000001C0000-0x00000000001DA000-memory.dmp

Filesize
104KB

Download
memory/2276-2-0x000007FEF54F0000-0x000007FEF5EDC000-memory.dmp

Filesize
9.9MB

Download
memory/2276-0-0x000007FEF54F3000-0x000007FEF54F4000-memory.dmp

Filesize
4KB

Download
memory/2276-1-0x0000000000CE0000-0x0000000000CFA000-memory.dmp

Filesize
104KB

Download
memory/2276-35-0x000007FEF54F3000-0x000007FEF54F4000-memory.dmp

Filesize
4KB

Download
memory/2276-36-0x000007FEF54F0000-0x000007FEF5EDC000-memory.dmp

Filesize
9.9MB

Download
memory/2544-15-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2544-16-0x0000000001DD0000-0x0000000001DD8000-memory.dmp

Filesize
32KB

Download
memory/2652-7-0x0000000002D10000-0x0000000002D90000-memory.dmp

Filesize
512KB

Download
memory/2652-8-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2652-9-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2716-40-0x0000000000CF0000-0x0000000000D0A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads