xworm | 9994b9e197b422529221de7238dc0e44ae21e66d78c48355f31837c3696ec90e

Analysis

max time kernel
150s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 05:30

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General

Target

5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe
Size

85KB
MD5

c1826ac82abf9c6d49c3bff9f8cbb31c
SHA1

0c15d09f8af3e0850c97b8aece22e351229ab6bd
SHA256

5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43
SHA512

76ada87e6b90a5a1e7622b148affd1ad89f83eef9af81f96b6d94d64ae8b4a80624b2b118a2890aca945a10b0ec12d0e6d0d4304d300e7be4cf8f70c4ebac855
SSDEEP

1536:Dl+noSnLDekZPaf2vpmbl4aXmI7ufDD6ALj2TCzOgiHZnP:D8v/aev4bl4i7acoOzH1P

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

185.117.250.169:7000

66.175.239.149:7000

185.117.249.43:7000

Attributes

Install_directory
%AppData%
install_file
WmiPrvSE.exe

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral15/memory/3024-1-0x0000000000F00000-0x0000000000F1C000-memory.dmp	family_xworm
behavioral15/files/0x0006000000004ed7-35.dat	family_xworm
behavioral15/memory/672-37-0x00000000000D0000-0x00000000000EC000-memory.dmp	family_xworm
behavioral15/memory/968-40-0x0000000000AA0000-0x0000000000ABC000-memory.dmp	family_xworm
behavioral15/memory/992-42-0x0000000000D80000-0x0000000000D9C000-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
2716	powershell.exe
2756	powershell.exe
2584	powershell.exe
2660	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WmiPrvSE.lnk	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WmiPrvSE.lnk	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe

Executes dropped EXE 3 IoCs

pid	Process
672	WmiPrvSE.exe
968	WmiPrvSE.exe
992	WmiPrvSE.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\WmiPrvSE = "C:\\Users\\Admin\\AppData\\Roaming\\WmiPrvSE.exe"	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.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
4	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
1936	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2660	powershell.exe
2716	powershell.exe
2756	powershell.exe
2584	powershell.exe
3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe
Token: SeDebugPrivilege	672	WmiPrvSE.exe
Token: SeDebugPrivilege	968	WmiPrvSE.exe
Token: SeDebugPrivilege	992	WmiPrvSE.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 2660	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	32
PID 3024 wrote to memory of 2660	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	32
PID 3024 wrote to memory of 2660	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	32
PID 3024 wrote to memory of 2716	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	34
PID 3024 wrote to memory of 2716	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	34
PID 3024 wrote to memory of 2716	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	34
PID 3024 wrote to memory of 2756	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	36
PID 3024 wrote to memory of 2756	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	36
PID 3024 wrote to memory of 2756	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	36
PID 3024 wrote to memory of 2584	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	38
PID 3024 wrote to memory of 2584	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	38
PID 3024 wrote to memory of 2584	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	38
PID 3024 wrote to memory of 1936	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	40
PID 3024 wrote to memory of 1936	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	40
PID 3024 wrote to memory of 1936	3024	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	40
PID 1012 wrote to memory of 672	1012	taskeng.exe	43
PID 1012 wrote to memory of 672	1012	taskeng.exe	43
PID 1012 wrote to memory of 672	1012	taskeng.exe	43
PID 1012 wrote to memory of 968	1012	taskeng.exe	45
PID 1012 wrote to memory of 968	1012	taskeng.exe	45
PID 1012 wrote to memory of 968	1012	taskeng.exe	45
PID 1012 wrote to memory of 992	1012	taskeng.exe	46
PID 1012 wrote to memory of 992	1012	taskeng.exe	46
PID 1012 wrote to memory of 992	1012	taskeng.exe	46

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\5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe
"C:\Users\Admin\AppData\Local\Temp\5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3024
- 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\5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - 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\WmiPrvSE.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WmiPrvSE.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2584
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WmiPrvSE" /tr "C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1936

C:\Windows\system32\taskeng.exe
taskeng.exe {B11CA824-AA76-4525-B6C4-570B4441C8B5} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1012
- C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:672
- C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:968
- C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
77cc380895b9b040bbaf53cc2298c249

SHA1
82aa8d82307e482b330234376214f490d177e96a

SHA256
142f1307d357339366d45f0d5ee949158aa58adf39fece61bbbc741068fd779a

SHA512
13a36fd42a5f3cc7640c93be2f96b3aba28e99bdf808f4f4dbd85ebfc2c5fddd2113a84bc9501a3ee73c30c7c8d5a84a4cfd0847e275b334adbaaaa19011eb14

Download Submit
C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe

Filesize
85KB

MD5
c1826ac82abf9c6d49c3bff9f8cbb31c

SHA1
0c15d09f8af3e0850c97b8aece22e351229ab6bd

SHA256
5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43

SHA512
76ada87e6b90a5a1e7622b148affd1ad89f83eef9af81f96b6d94d64ae8b4a80624b2b118a2890aca945a10b0ec12d0e6d0d4304d300e7be4cf8f70c4ebac855

Download Submit
memory/672-37-0x00000000000D0000-0x00000000000EC000-memory.dmp

Filesize
112KB

Download
memory/968-40-0x0000000000AA0000-0x0000000000ABC000-memory.dmp

Filesize
112KB

Download
memory/992-42-0x0000000000D80000-0x0000000000D9C000-memory.dmp

Filesize
112KB

Download
memory/2660-8-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/2660-9-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2660-7-0x0000000002910000-0x0000000002990000-memory.dmp

Filesize
512KB

Download
memory/2716-15-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/2716-16-0x0000000001F50000-0x0000000001F58000-memory.dmp

Filesize
32KB

Download
memory/3024-28-0x000007FEF57B3000-0x000007FEF57B4000-memory.dmp

Filesize
4KB

Download
memory/3024-33-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-0-0x000007FEF57B3000-0x000007FEF57B4000-memory.dmp

Filesize
4KB

Download
memory/3024-2-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-1-0x0000000000F00000-0x0000000000F1C000-memory.dmp

Filesize
112KB

Download