xworm | 799e38a2d934e537b2f1caf0803549a16f436b36c75d370f82d8565fa707945a

Analysis

max time kernel
173s
max time network
183s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-01-2025 23:25

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General

Target

PassatHook.exe
Size

81KB
MD5

6a94bba080aa0680e802f11fc15f3097
SHA1

5c02939054e727378cb0b53d33cf10fbce153ab8
SHA256

799e38a2d934e537b2f1caf0803549a16f436b36c75d370f82d8565fa707945a
SHA512

4de71ce1b3f3de66626a03f136f19f49bd9df9bafc1ded49e1df4c2ee4466e05e8e6c8de88ee45f36118d8d2f5c5194641ba4382fada02d34be2dccfe544c84e
SSDEEP

1536:jV8pE5LncGZb7ivIUn72/aN6nnOP8YKqX:jV8mncCb2jeOE0X

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

yet-involving.gl.at.ply.gg:21072

Attributes

Install_directory
%AppData%
install_file
Perm.exe

Signatures

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral1/memory/2660-47-0x0000000002190000-0x000000000219E000-memory.dmp	disable_win_def

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2660-1-0x0000000000080000-0x000000000009A000-memory.dmp	family_xworm
behavioral1/files/0x0009000000012117-37.dat	family_xworm
behavioral1/memory/2384-39-0x0000000000360000-0x000000000037A000-memory.dmp	family_xworm
behavioral1/memory/556-46-0x0000000000A90000-0x0000000000AAA000-memory.dmp	family_xworm
behavioral1/memory/2108-59-0x00000000001F0000-0x000000000020A000-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
2568	powershell.exe
2620	powershell.exe
2872	powershell.exe
1952	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2384	Perm.exe
556	Perm.exe
2108	Perm.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Perm = "C:\\Users\\Admin\\AppData\\Roaming\\Perm.exe"	PassatHook.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
1760	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2568	powershell.exe
2620	powershell.exe
2872	powershell.exe
1952	powershell.exe
2660	PassatHook.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1796	taskmgr.exe
2220	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	PassatHook.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	2620	powershell.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	1952	powershell.exe
Token: SeDebugPrivilege	2660	PassatHook.exe
Token: SeDebugPrivilege	2384	Perm.exe
Token: SeDebugPrivilege	1796	taskmgr.exe
Token: SeDebugPrivilege	556	Perm.exe
Token: SeDebugPrivilege	2220	taskmgr.exe
Token: SeDebugPrivilege	2108	Perm.exe

Suspicious use of FindShellTrayWindow 64 IoCs

pid	Process
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe

Suspicious use of SendNotifyMessage 64 IoCs

pid	Process
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe
1796	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2660	PassatHook.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2568	2660	PassatHook.exe	31
PID 2660 wrote to memory of 2568	2660	PassatHook.exe	31
PID 2660 wrote to memory of 2568	2660	PassatHook.exe	31
PID 2660 wrote to memory of 2620	2660	PassatHook.exe	33
PID 2660 wrote to memory of 2620	2660	PassatHook.exe	33
PID 2660 wrote to memory of 2620	2660	PassatHook.exe	33
PID 2660 wrote to memory of 2872	2660	PassatHook.exe	35
PID 2660 wrote to memory of 2872	2660	PassatHook.exe	35
PID 2660 wrote to memory of 2872	2660	PassatHook.exe	35
PID 2660 wrote to memory of 1952	2660	PassatHook.exe	37
PID 2660 wrote to memory of 1952	2660	PassatHook.exe	37
PID 2660 wrote to memory of 1952	2660	PassatHook.exe	37
PID 2660 wrote to memory of 1760	2660	PassatHook.exe	40
PID 2660 wrote to memory of 1760	2660	PassatHook.exe	40
PID 2660 wrote to memory of 1760	2660	PassatHook.exe	40
PID 904 wrote to memory of 2384	904	taskeng.exe	43
PID 904 wrote to memory of 2384	904	taskeng.exe	43
PID 904 wrote to memory of 2384	904	taskeng.exe	43
PID 904 wrote to memory of 556	904	taskeng.exe	46
PID 904 wrote to memory of 556	904	taskeng.exe	46
PID 904 wrote to memory of 556	904	taskeng.exe	46
PID 904 wrote to memory of 2108	904	taskeng.exe	49
PID 904 wrote to memory of 2108	904	taskeng.exe	49
PID 904 wrote to memory of 2108	904	taskeng.exe	49

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\PassatHook.exe
"C:\Users\Admin\AppData\Local\Temp\PassatHook.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:2660
- 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\PassatHook.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2568
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'PassatHook.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2620
- 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\Perm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2872
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Perm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1952
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Perm" /tr "C:\Users\Admin\AppData\Roaming\Perm.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1760

C:\Windows\system32\taskeng.exe
taskeng.exe {F916D6CA-5176-4E6F-89F9-03F692D15325} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:904
- C:\Users\Admin\AppData\Roaming\Perm.exe
  C:\Users\Admin\AppData\Roaming\Perm.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2384
- C:\Users\Admin\AppData\Roaming\Perm.exe
  C:\Users\Admin\AppData\Roaming\Perm.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:556
- C:\Users\Admin\AppData\Roaming\Perm.exe
  C:\Users\Admin\AppData\Roaming\Perm.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2108

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1796

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2220

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

Replay Monitor

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Downloads

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

Filesize
7KB

MD5
5a36567261879d1c49698fe96ea7a84b

SHA1
6379e71470213890d858f0b3f572f640ab54143e

SHA256
c2cf6ba21ebfc8ff272790bb278d4bfeafb6badeda691ba8ee2952d3587e7a42

SHA512
0eb8bbcefcf44bcce1e79ea2ee34ddc4319f6ed2c87f42e9dfb1be43b83ff401213be7cd6d3f91103093d8c29bd851645fd6996be8d064b1694622c2d05908f1

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

Filesize
81KB

MD5
6a94bba080aa0680e802f11fc15f3097

SHA1
5c02939054e727378cb0b53d33cf10fbce153ab8

SHA256
799e38a2d934e537b2f1caf0803549a16f436b36c75d370f82d8565fa707945a

SHA512
4de71ce1b3f3de66626a03f136f19f49bd9df9bafc1ded49e1df4c2ee4466e05e8e6c8de88ee45f36118d8d2f5c5194641ba4382fada02d34be2dccfe544c84e

Download Submit
memory/556-46-0x0000000000A90000-0x0000000000AAA000-memory.dmp

Filesize
104KB

Download
memory/1796-43-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/1796-42-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/1796-41-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/1796-40-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2108-59-0x00000000001F0000-0x000000000020A000-memory.dmp

Filesize
104KB

Download
memory/2220-56-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2220-60-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2384-39-0x0000000000360000-0x000000000037A000-memory.dmp

Filesize
104KB

Download
memory/2568-7-0x0000000002900000-0x0000000002980000-memory.dmp

Filesize
512KB

Download
memory/2568-8-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download
memory/2568-9-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2620-16-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2620-15-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2660-50-0x000000001B480000-0x000000001B4C8000-memory.dmp

Filesize
288KB

Download
memory/2660-47-0x0000000002190000-0x000000000219E000-memory.dmp

Filesize
56KB

Download
memory/2660-51-0x000000001A850000-0x000000001A858000-memory.dmp

Filesize
32KB

Download
memory/2660-0-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

Filesize
4KB

Download
memory/2660-52-0x000000001CDA0000-0x000000001CE46000-memory.dmp

Filesize
664KB

Download
memory/2660-48-0x000000001D8A0000-0x000000001DB82000-memory.dmp

Filesize
2.9MB

Download
memory/2660-49-0x000000001A830000-0x000000001A84C000-memory.dmp

Filesize
112KB

Download
memory/2660-53-0x000000001B160000-0x000000001B194000-memory.dmp

Filesize
208KB

Download
memory/2660-28-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

Filesize
4KB

Download
memory/2660-33-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2660-35-0x0000000002180000-0x000000000218A000-memory.dmp

Filesize
40KB

Download
memory/2660-54-0x000000001B1A0000-0x000000001B1EA000-memory.dmp

Filesize
296KB

Download
memory/2660-55-0x000000001AA80000-0x000000001AA96000-memory.dmp

Filesize
88KB

Download
memory/2660-34-0x0000000002060000-0x000000000206C000-memory.dmp

Filesize
48KB

Download
memory/2660-57-0x000000001A860000-0x000000001A86A000-memory.dmp

Filesize
40KB

Download
memory/2660-2-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2660-1-0x0000000000080000-0x000000000009A000-memory.dmp

Filesize
104KB

Download