xworm | b9cae0739fc6daee051551b3e1dfabd39db41c2996f3a905254a71def555ba36

Analysis

max time kernel
146s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:11

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General

Target

5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe
Size

626KB
MD5

b675f5607efc77d45aac893264dd601c
SHA1

6d6d0a2f7bc9d1df99275894d9e455d70da689d1
SHA256

5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add
SHA512

5e74b0c975173351c0c9b4cd49283adfd57e38b768dcbf03f82d30c5f9c1ada0b6e70b97d26a6787bd15f43ae802d5b2f4394123bf4445378a7351dd335b5211
SSDEEP

12288:wTAALVma8Vk2WbYq5qL7Lp4SKpRUzfBI4xa7iKX:mVma72z9KY7BID7iK

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

https://pastebin.com/raw/DfF7GpwD:123456789

Attributes

Install_directory
%LocalAppData%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/DfF7GpwD

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral8/memory/3524-1-0x00000000004C0000-0x0000000000562000-memory.dmp	family_xworm
behavioral8/files/0x000c000000024276-60.dat	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
4368	powershell.exe
4120	powershell.exe
3196	powershell.exe
1760	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe

Executes dropped EXE 3 IoCs

pid	Process
4604	svchost.exe
3828	svchost.exe
2336	svchost.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-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.exe"	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
25	pastebin.com
26	pastebin.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
6060	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4120	powershell.exe
4120	powershell.exe
3196	powershell.exe
3196	powershell.exe
1760	powershell.exe
1760	powershell.exe
4368	powershell.exe
4368	powershell.exe
3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe
Token: SeDebugPrivilege	4120	powershell.exe
Token: SeDebugPrivilege	3196	powershell.exe
Token: SeDebugPrivilege	1760	powershell.exe
Token: SeDebugPrivilege	4368	powershell.exe
Token: SeDebugPrivilege	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe
Token: SeDebugPrivilege	4604	svchost.exe
Token: SeDebugPrivilege	3828	svchost.exe
Token: SeDebugPrivilege	2336	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3524 wrote to memory of 4120	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	91
PID 3524 wrote to memory of 4120	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	91
PID 3524 wrote to memory of 3196	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	94
PID 3524 wrote to memory of 3196	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	94
PID 3524 wrote to memory of 1760	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	96
PID 3524 wrote to memory of 1760	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	96
PID 3524 wrote to memory of 4368	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	98
PID 3524 wrote to memory of 4368	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	98
PID 3524 wrote to memory of 6060	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	100
PID 3524 wrote to memory of 6060	3524	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	100

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\5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe
"C:\Users\Admin\AppData\Local\Temp\5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe"
1⤵
- Checks computer location settings
- 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:3524
- 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\5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4120
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3196
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4368
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:6060

C:\Users\Admin\AppData\Local\svchost.exe
C:\Users\Admin\AppData\Local\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4604

C:\Users\Admin\AppData\Local\svchost.exe
C:\Users\Admin\AppData\Local\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3828

C:\Users\Admin\AppData\Local\svchost.exe
C:\Users\Admin\AppData\Local\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2336

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

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
164a45e66dbe5b4c1fad9ced25394a84

SHA1
5f90cf92b891734679ddb12be560b2ec4c6282d7

SHA256
e8f1393a9e1a21ef9c18231e6d1301624694e6036ec8ddf1234219eb96222a28

SHA512
d05e8eebd235ed67a9a4c8f13004cf576df60ae068b81cd11a9d3de69cde110bf3983005a55adac948c5e8f5843b44c865b56dad4d8a37de3d2e442c4ef2eb55

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d8cb3e9459807e35f02130fad3f9860d

SHA1
5af7f32cb8a30e850892b15e9164030a041f4bd6

SHA256
2b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68

SHA512
045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
da185fddf7e751e39023edde12930f37

SHA1
657fcb7fda401b69d3bb97e7b6abf126ac36d4b2

SHA256
8928226805a92acd76d21e1a276176d9af3ca1ec31f14e45a2b4b88f4722cad5

SHA512
db7bc02a1bd86d587840a56334dee9cb80aa0a8635cd2eb1c490bc5466659350de4d625f320731e34fac235016515d0dddc05a6081149dc6c2e82c262be6b975

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2jwoyhwi.0mc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\svchost.exe

Filesize
626KB

MD5
b675f5607efc77d45aac893264dd601c

SHA1
6d6d0a2f7bc9d1df99275894d9e455d70da689d1

SHA256
5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add

SHA512
5e74b0c975173351c0c9b4cd49283adfd57e38b768dcbf03f82d30c5f9c1ada0b6e70b97d26a6787bd15f43ae802d5b2f4394123bf4445378a7351dd335b5211

Download Submit
memory/3524-56-0x00007FFC746A0000-0x00007FFC75161000-memory.dmp

Filesize
10.8MB

Download
memory/3524-0-0x00007FFC746A3000-0x00007FFC746A5000-memory.dmp

Filesize
8KB

Download
memory/3524-57-0x00007FFC746A3000-0x00007FFC746A5000-memory.dmp

Filesize
8KB

Download
memory/3524-58-0x00007FFC746A0000-0x00007FFC75161000-memory.dmp

Filesize
10.8MB

Download
memory/3524-1-0x00000000004C0000-0x0000000000562000-memory.dmp

Filesize
648KB

Download
memory/4120-17-0x00007FFC746A0000-0x00007FFC75161000-memory.dmp

Filesize
10.8MB

Download
memory/4120-14-0x00007FFC746A0000-0x00007FFC75161000-memory.dmp

Filesize
10.8MB

Download
memory/4120-13-0x00007FFC746A0000-0x00007FFC75161000-memory.dmp

Filesize
10.8MB

Download
memory/4120-12-0x00007FFC746A0000-0x00007FFC75161000-memory.dmp

Filesize
10.8MB

Download
memory/4120-11-0x0000020F2EEF0000-0x0000020F2EF12000-memory.dmp

Filesize
136KB

Download