xworm | 8cfbd820492a10d05d35bdc16b2a14c1e2cfeea59a7ac580d4ab31e2d9c2f02b

Analysis

max time kernel
134s
max time network
143s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
11-07-2024 20:33

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General

Target

rootkit2.exe
Size

92KB
MD5

5651e7a81c8fb1fd46815980400e2a5e
SHA1

6ac8c6c10930701bca9acc90d1c05acb679ea0fb
SHA256

8cfbd820492a10d05d35bdc16b2a14c1e2cfeea59a7ac580d4ab31e2d9c2f02b
SHA512

68f2d92610ff1ec6f9c729aac55eacd9b6770772ebdca53f911165713ea895cf3b27119f799cf48c0ab8978fef6c6d9dcd57bb149e24f660c1af1d985faacd3b
SSDEEP

1536:1tyN2QvLnSw2tKKKuax1F8ujwxmHTMHreiQM5CC/Oij5UEd/7Fn:10N2ELnSVK5xf5oHrxQICCmij5UEj

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

127.0.0.1:49403

quotes-suites.gl.at.ply:49403

quotes-suites.gl.at.ply.gg:49403

127.0.0.1:7016

software-orchestra.gl.at.ply.gg:7016

Mutex

NRP6rH1yxlCpJJhG

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012116-5.dat	family_xworm
behavioral1/memory/2780-12-0x0000000000970000-0x0000000000980000-memory.dmp	family_xworm
behavioral1/files/0x00070000000186e9-11.dat	family_xworm
behavioral1/memory/2692-13-0x0000000000830000-0x0000000000840000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
484	powershell.exe
1540	powershell.exe
320	powershell.exe
2096	powershell.exe
2856	powershell.exe
2900	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
2780	svhost.exe
2692	XClient.exe
1824	XClient.exe
1720	XClient.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-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	svhost.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	ip-api.com
3	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2932	timeout.exe

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
1016	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2856	powershell.exe
2900	powershell.exe
484	powershell.exe
1540	powershell.exe
2692	XClient.exe
320	powershell.exe
2096	powershell.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2780	svhost.exe
Token: SeDebugPrivilege	2692	XClient.exe
Token: SeDebugPrivilege	2856	powershell.exe
Token: SeDebugPrivilege	2900	powershell.exe
Token: SeDebugPrivilege	484	powershell.exe
Token: SeDebugPrivilege	1540	powershell.exe
Token: SeDebugPrivilege	2692	XClient.exe
Token: SeDebugPrivilege	320	powershell.exe
Token: SeDebugPrivilege	2096	powershell.exe
Token: SeDebugPrivilege	2780	svhost.exe
Token: SeDebugPrivilege	1824	XClient.exe
Token: SeDebugPrivilege	1720	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2692	XClient.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 2780	2216	rootkit2.exe	30
PID 2216 wrote to memory of 2780	2216	rootkit2.exe	30
PID 2216 wrote to memory of 2780	2216	rootkit2.exe	30
PID 2216 wrote to memory of 2692	2216	rootkit2.exe	31
PID 2216 wrote to memory of 2692	2216	rootkit2.exe	31
PID 2216 wrote to memory of 2692	2216	rootkit2.exe	31
PID 2780 wrote to memory of 2856	2780	svhost.exe	33
PID 2780 wrote to memory of 2856	2780	svhost.exe	33
PID 2780 wrote to memory of 2856	2780	svhost.exe	33
PID 2692 wrote to memory of 2900	2692	XClient.exe	34
PID 2692 wrote to memory of 2900	2692	XClient.exe	34
PID 2692 wrote to memory of 2900	2692	XClient.exe	34
PID 2692 wrote to memory of 484	2692	XClient.exe	37
PID 2692 wrote to memory of 484	2692	XClient.exe	37
PID 2692 wrote to memory of 484	2692	XClient.exe	37
PID 2780 wrote to memory of 1540	2780	svhost.exe	39
PID 2780 wrote to memory of 1540	2780	svhost.exe	39
PID 2780 wrote to memory of 1540	2780	svhost.exe	39
PID 2780 wrote to memory of 320	2780	svhost.exe	41
PID 2780 wrote to memory of 320	2780	svhost.exe	41
PID 2780 wrote to memory of 320	2780	svhost.exe	41
PID 2780 wrote to memory of 2096	2780	svhost.exe	43
PID 2780 wrote to memory of 2096	2780	svhost.exe	43
PID 2780 wrote to memory of 2096	2780	svhost.exe	43
PID 2780 wrote to memory of 1016	2780	svhost.exe	45
PID 2780 wrote to memory of 1016	2780	svhost.exe	45
PID 2780 wrote to memory of 1016	2780	svhost.exe	45
PID 2180 wrote to memory of 1824	2180	taskeng.exe	50
PID 2180 wrote to memory of 1824	2180	taskeng.exe	50
PID 2180 wrote to memory of 1824	2180	taskeng.exe	50
PID 2180 wrote to memory of 1720	2180	taskeng.exe	51
PID 2180 wrote to memory of 1720	2180	taskeng.exe	51
PID 2180 wrote to memory of 1720	2180	taskeng.exe	51
PID 2780 wrote to memory of 2752	2780	svhost.exe	52
PID 2780 wrote to memory of 2752	2780	svhost.exe	52
PID 2780 wrote to memory of 2752	2780	svhost.exe	52
PID 2780 wrote to memory of 1984	2780	svhost.exe	54
PID 2780 wrote to memory of 1984	2780	svhost.exe	54
PID 2780 wrote to memory of 1984	2780	svhost.exe	54
PID 1984 wrote to memory of 2932	1984	cmd.exe	56
PID 1984 wrote to memory of 2932	1984	cmd.exe	56
PID 1984 wrote to memory of 2932	1984	cmd.exe	56

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\rootkit2.exe
"C:\Users\Admin\AppData\Local\Temp\rootkit2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Users\Admin\AppData\Roaming\svhost.exe
  "C:\Users\Admin\AppData\Roaming\svhost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2780
- - 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\svhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2856
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1540
- - 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\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:320
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2096
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1016
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /delete /f /tn "XClient"
    3⤵
    PID:2752
- - C:\Windows\system32\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF019.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1984
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:2932
- C:\Users\Admin\AppData\Roaming\XClient.exe
  "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2692
- - 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\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2900
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:484

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
PID:1096

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
PID:1032

C:\Windows\system32\taskeng.exe
taskeng.exe {EBFCB8F7-6491-46B3-B9B2-25A989B12759} S-1-5-21-3294248377-1418901787-4083263181-1000:FMEDFXFE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1824
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1720

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\Local\Temp\tmpF019.tmp.bat

Filesize
155B

MD5
9b56e4f90be69aec5d38ef0a80e1c3a5

SHA1
3a259da026768029794ff7422704488e1ec6af8c

SHA256
ca73dbeeaf2affc8ceaca24d101d067aeb98a3bb446541a4394897e4f519f2d7

SHA512
68f3d157ad8bc8c4a2d7a97b05d41fec1887a32e50322e3478aeb02eccad0c7b118943c9907090345f88616295c5a8203c053de5abbe2e8b87886f3514df5a60

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

Filesize
7KB

MD5
691fea0b5daa25ac475368bdd7ef8063

SHA1
15b6ce549c96419e36a1dd2e681f794c0ee4bc77

SHA256
3ddce71f57fbacc3ef9f97c071e807fc4e2564906825afb21408beaa6b046392

SHA512
d04f70bade8a0fa1b8b5a6fdaba2c6be8917ea755a885b749b8ac80aeb7ed0c0e492718ae66f8f7c05fa9f41b903068eca66262bc298c2f5473cfc9d212a314e

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

Filesize
40KB

MD5
ca1be8c146c1ab7796b13d29da6f3d78

SHA1
19b723f654ea15ae44d850a2abf5e65fc2a8e8f1

SHA256
1bbe7516f47fd001ab57a168210d8a99a22438e4d65f0cf8a85f2b2c26ff59b5

SHA512
c23ef4ed12ce33f3253e53d22758c49cab18953cf10b9e89c860537050682c2602251e69de0336fb7d37b061ac7bcccfbebdc7090d5b47ee5c8368a02472cf4a

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

Filesize
42KB

MD5
8f07bf27150c3a39dce213aa1e646e6a

SHA1
02130a4626dfe194db890fd4eeb5b02679a1f8c0

SHA256
cc38042dcb39ab32ad8f8cebea17a5694c079de704211ba8955bc5edf4c2268c

SHA512
2d7e266a9e25cee05a8af2c9893570828dc2ddc7f7c972b37edee4d4c95198291a7a09643fc944cebbc8d1ac6dde27a29af12abb69253eec1836eef0cdfc9c05

Download Submit
memory/484-37-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/484-36-0x000000001B7B0000-0x000000001BA92000-memory.dmp

Filesize
2.9MB

Download
memory/2216-0-0x000007FEF5013000-0x000007FEF5014000-memory.dmp

Filesize
4KB

Download
memory/2216-1-0x0000000000190000-0x00000000001AE000-memory.dmp

Filesize
120KB

Download
memory/2692-13-0x0000000000830000-0x0000000000840000-memory.dmp

Filesize
64KB

Download
memory/2780-49-0x000007FEF5010000-0x000007FEF59FC000-memory.dmp

Filesize
9.9MB

Download
memory/2780-12-0x0000000000970000-0x0000000000980000-memory.dmp

Filesize
64KB

Download
memory/2780-53-0x0000000000950000-0x000000000095C000-memory.dmp

Filesize
48KB

Download
memory/2780-14-0x000007FEF5010000-0x000007FEF59FC000-memory.dmp

Filesize
9.9MB

Download
memory/2780-64-0x000007FEF5010000-0x000007FEF59FC000-memory.dmp

Filesize
9.9MB

Download
memory/2856-21-0x0000000001D00000-0x0000000001D08000-memory.dmp

Filesize
32KB

Download
memory/2856-20-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download