xworm | b9cae0739fc6daee051551b3e1dfabd39db41c2996f3a905254a71def555ba36

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:11

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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 3 IoCs

resource	yara_rule
behavioral7/memory/2752-1-0x0000000001370000-0x0000000001412000-memory.dmp	family_xworm
behavioral7/files/0x000c0000000122ce-34.dat	family_xworm
behavioral7/memory/1884-36-0x00000000011D0000-0x0000000001272000-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
2660	powershell.exe
2504	powershell.exe
2712	powershell.exe
1120	powershell.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
1884	svchost.exe
1604	svchost.exe
2476	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-1-5-21-312935884-697965778-3955649944-1000\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
4	pastebin.com
5	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
1896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2660	powershell.exe
2504	powershell.exe
2712	powershell.exe
1120	powershell.exe
2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	2504	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	1120	powershell.exe
Token: SeDebugPrivilege	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe
Token: SeDebugPrivilege	1884	svchost.exe
Token: SeDebugPrivilege	1604	svchost.exe
Token: SeDebugPrivilege	2476	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2752 wrote to memory of 2660	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	31
PID 2752 wrote to memory of 2660	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	31
PID 2752 wrote to memory of 2660	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	31
PID 2752 wrote to memory of 2504	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	33
PID 2752 wrote to memory of 2504	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	33
PID 2752 wrote to memory of 2504	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	33
PID 2752 wrote to memory of 2712	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	35
PID 2752 wrote to memory of 2712	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	35
PID 2752 wrote to memory of 2712	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	35
PID 2752 wrote to memory of 1120	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	37
PID 2752 wrote to memory of 1120	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	37
PID 2752 wrote to memory of 1120	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	37
PID 2752 wrote to memory of 1896	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	39
PID 2752 wrote to memory of 1896	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	39
PID 2752 wrote to memory of 1896	2752	5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe	39
PID 2600 wrote to memory of 1884	2600	taskeng.exe	42
PID 2600 wrote to memory of 1884	2600	taskeng.exe	42
PID 2600 wrote to memory of 1884	2600	taskeng.exe	42
PID 2600 wrote to memory of 1604	2600	taskeng.exe	43
PID 2600 wrote to memory of 1604	2600	taskeng.exe	43
PID 2600 wrote to memory of 1604	2600	taskeng.exe	43
PID 2600 wrote to memory of 2476	2600	taskeng.exe	45
PID 2600 wrote to memory of 2476	2600	taskeng.exe	45
PID 2600 wrote to memory of 2476	2600	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\5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.exe
"C:\Users\Admin\AppData\Local\Temp\5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add.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:2752
- 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:2660
- 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:2504
- 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:2712
- 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:1120
- 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:1896

C:\Windows\system32\taskeng.exe
taskeng.exe {4B829567-F8FD-499E-8EAB-F9B8FB2CEAD2} S-1-5-21-312935884-697965778-3955649944-1000:MXQFNXLT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Users\Admin\AppData\Local\svchost.exe
  C:\Users\Admin\AppData\Local\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1884
- C:\Users\Admin\AppData\Local\svchost.exe
  C:\Users\Admin\AppData\Local\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1604
- C:\Users\Admin\AppData\Local\svchost.exe
  C:\Users\Admin\AppData\Local\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2476

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
626KB

MD5
b675f5607efc77d45aac893264dd601c

SHA1
6d6d0a2f7bc9d1df99275894d9e455d70da689d1

SHA256
5f6bf8650715fe3f914b7e24cf572b85fd753d68054c98c36360b67bfa518add

SHA512
5e74b0c975173351c0c9b4cd49283adfd57e38b768dcbf03f82d30c5f9c1ada0b6e70b97d26a6787bd15f43ae802d5b2f4394123bf4445378a7351dd335b5211

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

Filesize
7KB

MD5
a43e729471f43f5b25e3fe728539e30a

SHA1
1959578125659124bbc8f19648eddd50684c5b8d

SHA256
71a366bde5f919e420cc23cd00da9ac51265a143093dadfe1cbc1dadb6d3d782

SHA512
9bcc5185520180ca602bba687d6d169049f0b507886b45cae1729210dd782a0352f651d8597869b93d7e9583672b3e44e48f0485e6539e0aee9c75e6cf2ef344

Download Submit
memory/1884-36-0x00000000011D0000-0x0000000001272000-memory.dmp

Filesize
648KB

Download
memory/2504-14-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2504-15-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2660-7-0x000000001B590000-0x000000001B872000-memory.dmp

Filesize
2.9MB

Download
memory/2660-8-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2660-6-0x0000000002BF0000-0x0000000002C70000-memory.dmp

Filesize
512KB

Download
memory/2752-0-0x000007FEF6623000-0x000007FEF6624000-memory.dmp

Filesize
4KB

Download
memory/2752-31-0x000000001B1F0000-0x000000001B270000-memory.dmp

Filesize
512KB

Download
memory/2752-32-0x000007FEF6623000-0x000007FEF6624000-memory.dmp

Filesize
4KB

Download
memory/2752-1-0x0000000001370000-0x0000000001412000-memory.dmp

Filesize
648KB

Download
memory/2752-37-0x000000001B1F0000-0x000000001B270000-memory.dmp

Filesize
512KB

Download