xworm | 763f829f6c81514765bba20dc7cee33b7943a2fd07a4d289b141a4379da1437b

General

Target

XClient.exe
Size

241KB
MD5

0d1bb5abb00b755f23abc9dd94ac48e5
SHA1

af98320e41cbaa605ac9eb4e6880e548e9ff4fa5
SHA256

763f829f6c81514765bba20dc7cee33b7943a2fd07a4d289b141a4379da1437b
SHA512

a1b589fc638b01684be832a78290747843eb7403e12392909a1c242ece810681e1658a9168b3ae6828f05927e6e06c2f167ebe4cdd7d87f342fecd79ef0168dc
SSDEEP

6144:5Q2yOGXC7BsBb/eFVhOg3UhcX7elbKTua9bfF/H9d9n:5QwGS2ZeFVhX33X3u+

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

artist-forum.gl.at.ply.gg:38847

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1740-0-0x0000000000A90000-0x0000000000AD2000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\XClient.exe	family_xworm
behavioral1/memory/328-36-0x0000000000B70000-0x0000000000BB2000-memory.dmp	family_xworm
behavioral1/memory/1688-39-0x00000000002D0000-0x0000000000312000-memory.dmp	family_xworm

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

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\XClient.lnk	XClient.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient.exe

Executes dropped EXE 2 IoCs

Processes:

XClient.exeXClient.exe

pid process

328 XClient.exe
1688 XClient.exe

pid	process
328	XClient.exe
1688	XClient.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-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.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

2 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

2064 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient.exe

pid process

2120 powershell.exe
2716 powershell.exe
2544 powershell.exe
1896 powershell.exe
1740 XClient.exe

flow	ioc
2	ip-api.com

pid	process
2064	schtasks.exe

pid	process
2120	powershell.exe
2716	powershell.exe
2544	powershell.exe
1896	powershell.exe
1740	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

XClient.exepowershell.exepowershell.exepowershell.exepowershell.exeXClient.exeXClient.exe

description	pid	process
Token: SeDebugPrivilege	1740	XClient.exe
Token: SeDebugPrivilege	2120	powershell.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2544	powershell.exe
Token: SeDebugPrivilege	1896	powershell.exe
Token: SeDebugPrivilege	1740	XClient.exe
Token: SeDebugPrivilege	328	XClient.exe
Token: SeDebugPrivilege	1688	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid process

1740 XClient.exe

pid	process
1740	XClient.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

XClient.exetaskeng.exe

description	pid	process	target process
PID 1740 wrote to memory of 2120	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 2120	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 2120	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 2716	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 2716	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 2716	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 2544	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 2544	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 2544	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 1896	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 1896	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 1896	1740	XClient.exe	powershell.exe
PID 1740 wrote to memory of 2064	1740	XClient.exe	schtasks.exe
PID 1740 wrote to memory of 2064	1740	XClient.exe	schtasks.exe
PID 1740 wrote to memory of 2064	1740	XClient.exe	schtasks.exe
PID 2860 wrote to memory of 328	2860	taskeng.exe	XClient.exe
PID 2860 wrote to memory of 328	2860	taskeng.exe	XClient.exe
PID 2860 wrote to memory of 328	2860	taskeng.exe	XClient.exe
PID 2860 wrote to memory of 1688	2860	taskeng.exe	XClient.exe
PID 2860 wrote to memory of 1688	2860	taskeng.exe	XClient.exe
PID 2860 wrote to memory of 1688	2860	taskeng.exe	XClient.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:1740

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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2120

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2716

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\XClient.exe'
2⤵
- 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 -ExclusionProcess 'XClient.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1896

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
2⤵
- Creates scheduled task(s)
PID:2064

C:\Windows\system32\taskeng.exe
taskeng.exe {9EBFA8DA-A136-4AF2-B0A0-12D51729A5FA} S-1-5-21-481678230-3773327859-3495911762-1000:UIBNQNMA\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2860

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:328

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1688

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

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

MD5
4333d0e00908294442b633a49d546e14

SHA1
cbd7e435b282331327212fed3726b4908cde5818

SHA256
6e16fc595ed4bd2e72715ce318ca7427412a9fdd5f77aa0412f6f2bce353a7b8

SHA512
0e035ff439b9d7ce9728d7df5ff291b8010bb5cfbd23a06e486f3fa73ee8df82dce161efb2c383b92aa1e13babebc5f087ab50dfaeaab63534f54a01a2ae1dc6

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe
Filesize
241KB

MD5
0d1bb5abb00b755f23abc9dd94ac48e5

SHA1
af98320e41cbaa605ac9eb4e6880e548e9ff4fa5

SHA256
763f829f6c81514765bba20dc7cee33b7943a2fd07a4d289b141a4379da1437b

SHA512
a1b589fc638b01684be832a78290747843eb7403e12392909a1c242ece810681e1658a9168b3ae6828f05927e6e06c2f167ebe4cdd7d87f342fecd79ef0168dc

Download Submit
\??\PIPE\srvsvc
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/328-36-0x0000000000B70000-0x0000000000BB2000-memory.dmp

Filesize
264KB

Download
memory/1688-39-0x00000000002D0000-0x0000000000312000-memory.dmp

Filesize
264KB

Download
memory/1740-32-0x00000000009E0000-0x0000000000A60000-memory.dmp

Filesize
512KB

Download
memory/1740-1-0x000007FEF6280000-0x000007FEF6C6C000-memory.dmp

Filesize
9.9MB

Download
memory/1740-2-0x00000000009E0000-0x0000000000A60000-memory.dmp

Filesize
512KB

Download
memory/1740-0-0x0000000000A90000-0x0000000000AD2000-memory.dmp

Filesize
264KB

Download
memory/1740-31-0x000007FEF6280000-0x000007FEF6C6C000-memory.dmp

Filesize
9.9MB

Download
memory/2120-7-0x000000001B6A0000-0x000000001B982000-memory.dmp

Filesize
2.9MB

Download
memory/2120-8-0x0000000002690000-0x0000000002698000-memory.dmp

Filesize
32KB

Download
memory/2716-15-0x0000000001D70000-0x0000000001D78000-memory.dmp

Filesize
32KB

Download
memory/2716-14-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads