xworm | 52dedc736371a5e6264336b06f8ed4ec60148eac2d4e53cb0184426e518fc0ef

General

Target

XClient.exe
Size

64KB
MD5

f78aaa2ed14328c0566fb6ee84e9ca5d
SHA1

32fdcc0eb824f46f41e21d5bc1bf0d3ec8e57a71
SHA256

52dedc736371a5e6264336b06f8ed4ec60148eac2d4e53cb0184426e518fc0ef
SHA512

22cac650566fe36f24dcdbb92f4cdd3e75e1597bfa7c8f90b174974f4bcbfe7826be0ebdf5fd4cd6949b724e155604baf4681fdec9d800f2270220f689e01029
SSDEEP

1536:RtXfzM1SDy2ieLVzFuxb7+bYKU+QD716zufOYPDmZu5:77OWyGFuxb7+bY7nOYbX5

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

guide-greatly.gl.at.ply.gg:16040

Attributes

Install_directory
%LocalAppData%
install_file
SecurityHealthSystray.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2688-1-0x00000000010C0000-0x00000000010D6000-memory.dmp	family_xworm
behavioral1/files/0x000a000000012117-33.dat	family_xworm
behavioral1/memory/2004-35-0x0000000000390000-0x00000000003A6000-memory.dmp	family_xworm
behavioral1/memory/692-39-0x0000000000A20000-0x0000000000A36000-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
2544	powershell.exe
2340	powershell.exe
2708	powershell.exe
2776	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2004	SecurityHealthSystray.exe
692	SecurityHealthSystray.exe
1480	SecurityHealthSystray.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\SecurityHealthSystray = "C:\\Users\\Admin\\AppData\\Local\\SecurityHealthSystray.exe"	XClient.exe

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
3060	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2544	powershell.exe
2340	powershell.exe
2708	powershell.exe
2776	powershell.exe
2688	XClient.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	XClient.exe
Token: SeDebugPrivilege	2544	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	2776	powershell.exe
Token: SeDebugPrivilege	2688	XClient.exe
Token: SeDebugPrivilege	2004	SecurityHealthSystray.exe
Token: SeDebugPrivilege	692	SecurityHealthSystray.exe
Token: SeDebugPrivilege	1480	SecurityHealthSystray.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2688	XClient.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2544	2688	XClient.exe	30
PID 2688 wrote to memory of 2544	2688	XClient.exe	30
PID 2688 wrote to memory of 2544	2688	XClient.exe	30
PID 2688 wrote to memory of 2340	2688	XClient.exe	32
PID 2688 wrote to memory of 2340	2688	XClient.exe	32
PID 2688 wrote to memory of 2340	2688	XClient.exe	32
PID 2688 wrote to memory of 2708	2688	XClient.exe	34
PID 2688 wrote to memory of 2708	2688	XClient.exe	34
PID 2688 wrote to memory of 2708	2688	XClient.exe	34
PID 2688 wrote to memory of 2776	2688	XClient.exe	37
PID 2688 wrote to memory of 2776	2688	XClient.exe	37
PID 2688 wrote to memory of 2776	2688	XClient.exe	37
PID 2688 wrote to memory of 3060	2688	XClient.exe	39
PID 2688 wrote to memory of 3060	2688	XClient.exe	39
PID 2688 wrote to memory of 3060	2688	XClient.exe	39
PID 2140 wrote to memory of 2004	2140	taskeng.exe	42
PID 2140 wrote to memory of 2004	2140	taskeng.exe	42
PID 2140 wrote to memory of 2004	2140	taskeng.exe	42
PID 2140 wrote to memory of 692	2140	taskeng.exe	44
PID 2140 wrote to memory of 692	2140	taskeng.exe	44
PID 2140 wrote to memory of 692	2140	taskeng.exe	44
PID 2140 wrote to memory of 1480	2140	taskeng.exe	45
PID 2140 wrote to memory of 1480	2140	taskeng.exe	45
PID 2140 wrote to memory of 1480	2140	taskeng.exe	45

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:2688
- 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: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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2340
- 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\SecurityHealthSystray.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SecurityHealthSystray.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2776
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SecurityHealthSystray" /tr "C:\Users\Admin\AppData\Local\SecurityHealthSystray.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3060

C:\Windows\system32\taskeng.exe
taskeng.exe {1E794CAB-A2AE-4067-A160-6775CAA42E9C} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Users\Admin\AppData\Local\SecurityHealthSystray.exe
  C:\Users\Admin\AppData\Local\SecurityHealthSystray.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2004
- C:\Users\Admin\AppData\Local\SecurityHealthSystray.exe
  C:\Users\Admin\AppData\Local\SecurityHealthSystray.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:692
- C:\Users\Admin\AppData\Local\SecurityHealthSystray.exe
  C:\Users\Admin\AppData\Local\SecurityHealthSystray.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1480

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\SecurityHealthSystray.exe

Filesize
64KB

MD5
f78aaa2ed14328c0566fb6ee84e9ca5d

SHA1
32fdcc0eb824f46f41e21d5bc1bf0d3ec8e57a71

SHA256
52dedc736371a5e6264336b06f8ed4ec60148eac2d4e53cb0184426e518fc0ef

SHA512
22cac650566fe36f24dcdbb92f4cdd3e75e1597bfa7c8f90b174974f4bcbfe7826be0ebdf5fd4cd6949b724e155604baf4681fdec9d800f2270220f689e01029

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

Filesize
7KB

MD5
142aae7e3654eba8c9b70ae964602b87

SHA1
3d0c96dc67d2d624188e162749bb74c6303f29b6

SHA256
e1f611d7eee0158be50e49d480c43ab1c5ce77a77d4bd9de1550c37e2cafd068

SHA512
548139bd64bc86272d5e84e2bd5773849d32bfba6cc8a41e1b25610ab0400e1cb63887fb0322bfbf9767f3ffcc7692b9791c16c0c0fa7e2da426914dfbc41e10

Download Submit
memory/692-39-0x0000000000A20000-0x0000000000A36000-memory.dmp

Filesize
88KB

Download
memory/2004-35-0x0000000000390000-0x00000000003A6000-memory.dmp

Filesize
88KB

Download
memory/2340-15-0x0000000002690000-0x0000000002698000-memory.dmp

Filesize
32KB

Download
memory/2340-14-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/2544-7-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/2544-8-0x0000000002250000-0x0000000002258000-memory.dmp

Filesize
32KB

Download
memory/2544-6-0x0000000002970000-0x00000000029F0000-memory.dmp

Filesize
512KB

Download
memory/2688-31-0x000000001B1F0000-0x000000001B270000-memory.dmp

Filesize
512KB

Download
memory/2688-0-0x000007FEF5B83000-0x000007FEF5B84000-memory.dmp

Filesize
4KB

Download
memory/2688-36-0x000000001B1F0000-0x000000001B270000-memory.dmp

Filesize
512KB

Download
memory/2688-1-0x00000000010C0000-0x00000000010D6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads