xworm | 9994b9e197b422529221de7238dc0e44ae21e66d78c48355f31837c3696ec90e

Analysis

max time kernel
156s
max time network
165s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 05:29

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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 4 IoCs

resource	yara_rule
behavioral15/memory/2384-1-0x0000000000B60000-0x0000000000B7C000-memory.dmp	family_xworm
behavioral15/files/0x000f000000012263-33.dat	family_xworm
behavioral15/memory/1656-35-0x0000000001290000-0x00000000012AC000-memory.dmp	family_xworm
behavioral15/memory/1532-38-0x00000000003C0000-0x00000000003DC000-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
2876	powershell.exe
2880	powershell.exe
2628	powershell.exe
2356	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1656	WmiPrvSE.exe
1532	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-1-5-21-3692679935-4019334568-335155002-1000\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
2832	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2876	powershell.exe
2880	powershell.exe
2628	powershell.exe
2356	powershell.exe
2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe
Token: SeDebugPrivilege	2876	powershell.exe
Token: SeDebugPrivilege	2880	powershell.exe
Token: SeDebugPrivilege	2628	powershell.exe
Token: SeDebugPrivilege	2356	powershell.exe
Token: SeDebugPrivilege	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe
Token: SeDebugPrivilege	1656	WmiPrvSE.exe
Token: SeDebugPrivilege	1532	WmiPrvSE.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2876	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	30
PID 2384 wrote to memory of 2876	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	30
PID 2384 wrote to memory of 2876	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	30
PID 2384 wrote to memory of 2880	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	32
PID 2384 wrote to memory of 2880	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	32
PID 2384 wrote to memory of 2880	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	32
PID 2384 wrote to memory of 2628	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	34
PID 2384 wrote to memory of 2628	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	34
PID 2384 wrote to memory of 2628	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	34
PID 2384 wrote to memory of 2356	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	36
PID 2384 wrote to memory of 2356	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	36
PID 2384 wrote to memory of 2356	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	36
PID 2384 wrote to memory of 2832	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	38
PID 2384 wrote to memory of 2832	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	38
PID 2384 wrote to memory of 2832	2384	5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43.exe	38
PID 1100 wrote to memory of 1656	1100	taskeng.exe	41
PID 1100 wrote to memory of 1656	1100	taskeng.exe	41
PID 1100 wrote to memory of 1656	1100	taskeng.exe	41
PID 1100 wrote to memory of 1532	1100	taskeng.exe	42
PID 1100 wrote to memory of 1532	1100	taskeng.exe	42
PID 1100 wrote to memory of 1532	1100	taskeng.exe	42

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:2384
- 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:2876
- 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:2880
- 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:2628
- 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:2356
- 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:2832

C:\Windows\system32\taskeng.exe
taskeng.exe {2634ACF4-39F6-4526-8AA4-618FD84066DF} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1656
- C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1532

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
5a36aacec7514cd8c56d49ada1975e8e

SHA1
c8b67ee13381657058fec23eac785457c9d47b21

SHA256
edcf687ff72579c0438c9a568f6ec2c7bd939aab74f56a9f5122f42d1cb1460b

SHA512
1bcab86ca55c5931363e1f4565fb01ad72a12193a6852df00664628a5a5c9b11ea36f054d10ccd703f91969a34bfb196e359ff727d1433831df337abbda6d42f

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

Filesize
85KB

MD5
c1826ac82abf9c6d49c3bff9f8cbb31c

SHA1
0c15d09f8af3e0850c97b8aece22e351229ab6bd

SHA256
5ff273f03e88a8b0a1f58c85dfa28fee6f44766eb09d53c421eb770d6b965e43

SHA512
76ada87e6b90a5a1e7622b148affd1ad89f83eef9af81f96b6d94d64ae8b4a80624b2b118a2890aca945a10b0ec12d0e6d0d4304d300e7be4cf8f70c4ebac855

Download Submit
memory/1532-38-0x00000000003C0000-0x00000000003DC000-memory.dmp

Filesize
112KB

Download
memory/1656-35-0x0000000001290000-0x00000000012AC000-memory.dmp

Filesize
112KB

Download
memory/2384-27-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Filesize
9.9MB

Download
memory/2384-9-0x000007FEF6003000-0x000007FEF6004000-memory.dmp

Filesize
4KB

Download
memory/2384-0-0x000007FEF6003000-0x000007FEF6004000-memory.dmp

Filesize
4KB

Download
memory/2384-2-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Filesize
9.9MB

Download
memory/2384-1-0x0000000000B60000-0x0000000000B7C000-memory.dmp

Filesize
112KB

Download
memory/2876-8-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2876-7-0x000000001B410000-0x000000001B6F2000-memory.dmp

Filesize
2.9MB

Download
memory/2880-15-0x000000001B240000-0x000000001B522000-memory.dmp

Filesize
2.9MB

Download
memory/2880-16-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download