xworm | 9465f48edb12c0ecfe182d5d6a91be86afd52c152b61c3916efb09df3a90cb05

Analysis

max time kernel
1047s
max time network
908s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
02/03/2025, 17:03

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General

Target

ratka.exe
Size

80KB
MD5

39ffa7b287f2d822703a6deea560dcbd
SHA1

34ae6406ec73ad02955cb7676b37489fdab1695b
SHA256

9465f48edb12c0ecfe182d5d6a91be86afd52c152b61c3916efb09df3a90cb05
SHA512

7efa49f3c9ba846d6382e7683d64a5b00232c459028a177b07c0e4f28f06682bd3a219421a355515766007bee9e0dfcce5e243afba73290487057542a644cc40
SSDEEP

1536:GeKbbG1+cDVWr5hLbwWV5hcEW07Z4E+bCXsEN9qtgq6rLs4ORpmcG1h:GeKbb60r5hLbwWVcPk1+b8JY4ORpmth

Score

10^/10

xworm bootkit defense_evasion discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

cause-indexes.gl.at.ply.gg:17210

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1904-1-0x0000000000500000-0x000000000051A000-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
3532	powershell.exe
456	powershell.exe
1332	powershell.exe
1124	powershell.exe

Disables Task Manager via registry modification
defense_evasion

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-1-5-21-983685854-559653692-675906587-1000\Control Panel\International\Geo\Nation	ratka.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4740	tnxdsj.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-1-5-21-983685854-559653692-675906587-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	ratka.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	tnxdsj.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tnxdsj.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
4116	reg.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3532	powershell.exe
3532	powershell.exe
456	powershell.exe
456	powershell.exe
1332	powershell.exe
1332	powershell.exe
1124	powershell.exe
1124	powershell.exe
1904	ratka.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1904	ratka.exe
Token: SeDebugPrivilege	3532	powershell.exe
Token: SeIncreaseQuotaPrivilege	3532	powershell.exe
Token: SeSecurityPrivilege	3532	powershell.exe
Token: SeTakeOwnershipPrivilege	3532	powershell.exe
Token: SeLoadDriverPrivilege	3532	powershell.exe
Token: SeSystemProfilePrivilege	3532	powershell.exe
Token: SeSystemtimePrivilege	3532	powershell.exe
Token: SeProfSingleProcessPrivilege	3532	powershell.exe
Token: SeIncBasePriorityPrivilege	3532	powershell.exe
Token: SeCreatePagefilePrivilege	3532	powershell.exe
Token: SeBackupPrivilege	3532	powershell.exe
Token: SeRestorePrivilege	3532	powershell.exe
Token: SeShutdownPrivilege	3532	powershell.exe
Token: SeDebugPrivilege	3532	powershell.exe
Token: SeSystemEnvironmentPrivilege	3532	powershell.exe
Token: SeRemoteShutdownPrivilege	3532	powershell.exe
Token: SeUndockPrivilege	3532	powershell.exe
Token: SeManageVolumePrivilege	3532	powershell.exe
Token: 33	3532	powershell.exe
Token: 34	3532	powershell.exe
Token: 35	3532	powershell.exe
Token: 36	3532	powershell.exe
Token: SeDebugPrivilege	456	powershell.exe
Token: SeIncreaseQuotaPrivilege	456	powershell.exe
Token: SeSecurityPrivilege	456	powershell.exe
Token: SeTakeOwnershipPrivilege	456	powershell.exe
Token: SeLoadDriverPrivilege	456	powershell.exe
Token: SeSystemProfilePrivilege	456	powershell.exe
Token: SeSystemtimePrivilege	456	powershell.exe
Token: SeProfSingleProcessPrivilege	456	powershell.exe
Token: SeIncBasePriorityPrivilege	456	powershell.exe
Token: SeCreatePagefilePrivilege	456	powershell.exe
Token: SeBackupPrivilege	456	powershell.exe
Token: SeRestorePrivilege	456	powershell.exe
Token: SeShutdownPrivilege	456	powershell.exe
Token: SeDebugPrivilege	456	powershell.exe
Token: SeSystemEnvironmentPrivilege	456	powershell.exe
Token: SeRemoteShutdownPrivilege	456	powershell.exe
Token: SeUndockPrivilege	456	powershell.exe
Token: SeManageVolumePrivilege	456	powershell.exe
Token: 33	456	powershell.exe
Token: 34	456	powershell.exe
Token: 35	456	powershell.exe
Token: 36	456	powershell.exe
Token: SeDebugPrivilege	1332	powershell.exe
Token: SeIncreaseQuotaPrivilege	1332	powershell.exe
Token: SeSecurityPrivilege	1332	powershell.exe
Token: SeTakeOwnershipPrivilege	1332	powershell.exe
Token: SeLoadDriverPrivilege	1332	powershell.exe
Token: SeSystemProfilePrivilege	1332	powershell.exe
Token: SeSystemtimePrivilege	1332	powershell.exe
Token: SeProfSingleProcessPrivilege	1332	powershell.exe
Token: SeIncBasePriorityPrivilege	1332	powershell.exe
Token: SeCreatePagefilePrivilege	1332	powershell.exe
Token: SeBackupPrivilege	1332	powershell.exe
Token: SeRestorePrivilege	1332	powershell.exe
Token: SeShutdownPrivilege	1332	powershell.exe
Token: SeDebugPrivilege	1332	powershell.exe
Token: SeSystemEnvironmentPrivilege	1332	powershell.exe
Token: SeRemoteShutdownPrivilege	1332	powershell.exe
Token: SeUndockPrivilege	1332	powershell.exe
Token: SeManageVolumePrivilege	1332	powershell.exe
Token: 33	1332	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1904	ratka.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 3532	1904	ratka.exe	84
PID 1904 wrote to memory of 3532	1904	ratka.exe	84
PID 1904 wrote to memory of 456	1904	ratka.exe	90
PID 1904 wrote to memory of 456	1904	ratka.exe	90
PID 1904 wrote to memory of 1332	1904	ratka.exe	92
PID 1904 wrote to memory of 1332	1904	ratka.exe	92
PID 1904 wrote to memory of 1124	1904	ratka.exe	94
PID 1904 wrote to memory of 1124	1904	ratka.exe	94
PID 1904 wrote to memory of 4740	1904	ratka.exe	103
PID 1904 wrote to memory of 4740	1904	ratka.exe	103
PID 1904 wrote to memory of 4740	1904	ratka.exe	103
PID 4740 wrote to memory of 3396	4740	tnxdsj.exe	104
PID 4740 wrote to memory of 3396	4740	tnxdsj.exe	104
PID 4740 wrote to memory of 3396	4740	tnxdsj.exe	104
PID 3396 wrote to memory of 4116	3396	cmd.exe	106
PID 3396 wrote to memory of 4116	3396	cmd.exe	106
PID 3396 wrote to memory of 4116	3396	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\ratka.exe
"C:\Users\Admin\AppData\Local\Temp\ratka.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:1904
- 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\ratka.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3532
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ratka.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:456
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1332
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1124
- C:\Users\Admin\AppData\Local\Temp\tnxdsj.exe
  "C:\Users\Admin\AppData\Local\Temp\tnxdsj.exe"
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4740
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c REG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3396
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f
      4⤵
      System Location Discovery: System Language Discovery
      Modifies registry key
      PID:4116

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x50c 0x504
1⤵
PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
1KB

MD5
c238412481a146ab11982ee82490777c

SHA1
61451087cbd22daf63c18b6c3c939fe0952f27c3

SHA256
25f1c3a4b36ae44eb159193c17cc953ae3fa576928f2384865ab837a964bd9f2

SHA512
4ee702b05336364af8cb89a6dd162b9404a8307c5fef96b7af82e8db55459b65b0ce1ce6f6e3018aa213a73f42ba5dc80d8550e45baf756ef0b8b8459e7f9f9b

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

Filesize
1KB

MD5
d107add3b43194a9c5aa94a664139b0e

SHA1
611be48fb978b9c8becfeae1b544fd7a6a3b70c5

SHA256
3c34a437d16805b6a658b61bcba4a3ee1d415348f03de0614a2c9a2b43e6b85c

SHA512
5a3f317ab6baa429084d09a357f8a81d2b045d35bb820ce670f5645877677c315a3739a90af8c2c273c17c730c9d99695d16ac95a981f8649299f756dd840500

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rbgu1zf1.n10.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tnxdsj.exe

Filesize
63KB

MD5
2cf51977ed60a9a59d29a72075ce52ad

SHA1
960e40eaa8445c0049d11f97abba7f4b465ad4d5

SHA256
64735679e70b0d6e67198c28df11cf449dc114df01f6c336d61a9da39448f853

SHA512
bfcad9e99ff0dfd2cd917b8160cccab3710ed9974a6c15ea7dd1b0db965a51eec5ac588a87c4bab37af60504a3deb4f11de0a4d93a0c3648673b0dc0824646ad

Download Submit
memory/1904-59-0x00007FFBAB880000-0x00007FFBAC342000-memory.dmp

Filesize
10.8MB

Download
memory/1904-60-0x00007FFBAB880000-0x00007FFBAC342000-memory.dmp

Filesize
10.8MB

Download
memory/1904-88-0x00007FFBAB880000-0x00007FFBAC342000-memory.dmp

Filesize
10.8MB

Download
memory/1904-83-0x000000001B280000-0x000000001B30E000-memory.dmp

Filesize
568KB

Download
memory/1904-1-0x0000000000500000-0x000000000051A000-memory.dmp

Filesize
104KB

Download
memory/1904-62-0x000000001B1A0000-0x000000001B1AC000-memory.dmp

Filesize
48KB

Download
memory/1904-0-0x00007FFBAB883000-0x00007FFBAB885000-memory.dmp

Filesize
8KB

Download
memory/1904-42-0x00007FFBAB883000-0x00007FFBAB885000-memory.dmp

Filesize
8KB

Download
memory/3532-2-0x0000020FCCB20000-0x0000020FCCB42000-memory.dmp

Filesize
136KB

Download
memory/3532-12-0x00007FFBAB880000-0x00007FFBAC342000-memory.dmp

Filesize
10.8MB

Download
memory/3532-15-0x00007FFBAB880000-0x00007FFBAC342000-memory.dmp

Filesize
10.8MB

Download
memory/3532-13-0x00007FFBAB880000-0x00007FFBAC342000-memory.dmp

Filesize
10.8MB

Download
memory/3532-14-0x00007FFBAB880000-0x00007FFBAC342000-memory.dmp

Filesize
10.8MB

Download
memory/3532-19-0x00007FFBAB880000-0x00007FFBAC342000-memory.dmp

Filesize
10.8MB

Download
memory/3532-16-0x00007FFBAB880000-0x00007FFBAC342000-memory.dmp

Filesize
10.8MB

Download
memory/4740-77-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download