xworm | bd55ac1b7d62bc032cc9574a7690ba96dcb906e8edbac57e3a5376db694f1d81

Analysis

max time kernel
147s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/02/2025, 20:02

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General

Target

YOU.exe
Size

955KB
MD5

eb86db27432e31d958931668b20dd18d
SHA1

12a8af666e5f1018071b46cb04df4a34384bb6be
SHA256

5f0a6832da6604ee51d0072fa8ae6ad9b0151074c30c6a08acaad43d339abdf7
SHA512

545b2ccdadb21aadc12a820ede8d4a730614d430816745aae817a4110cc36fa6891ff04e206d020f914debd388257222afcbbead55a2d88cd13e9e72b9ac938e
SSDEEP

24576:Iu6J33O0c+JY5UZ+XC0kGso6Fak67DeQlaWY:iu0c++OCvkGs9Fak8DY

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

176.96.137.181:2222

Attributes

Install_directory
%AppData%
install_file
XClient2.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2688-19-0x0000000000400000-0x000000000041A000-memory.dmp	family_xworm
behavioral1/memory/2688-21-0x0000000000400000-0x000000000041A000-memory.dmp	family_xworm
behavioral1/memory/2688-23-0x0000000000400000-0x000000000041A000-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
2920	powershell.exe
2564	powershell.exe
1732	powershell.exe
2916	powershell.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\avenses.vbs	avenses.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient2.lnk	RegSvcs.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient2.lnk	RegSvcs.exe

Executes dropped EXE 3 IoCs

pid	Process
2776	avenses.exe
1156	XClient2.exe
640	XClient2.exe

Loads dropped DLL 2 IoCs

pid	Process
1448	YOU.exe
2688	RegSvcs.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient2 = "C:\\Users\\Admin\\AppData\\Roaming\\XClient2.exe"	RegSvcs.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000016c89-7.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2776 set thread context of 2688	2776	avenses.exe	31

System Location Discovery: System Language Discovery 1 TTPs 10 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	XClient2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	XClient2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	YOU.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	avenses.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2612	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2920	powershell.exe
2564	powershell.exe
1732	powershell.exe
2916	powershell.exe
2688	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2776	avenses.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	RegSvcs.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	2564	powershell.exe
Token: SeDebugPrivilege	1732	powershell.exe
Token: SeDebugPrivilege	2916	powershell.exe
Token: SeDebugPrivilege	2688	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1448	YOU.exe
1448	YOU.exe
2776	avenses.exe
2776	avenses.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1448	YOU.exe
1448	YOU.exe
2776	avenses.exe
2776	avenses.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2688	RegSvcs.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 2776	1448	YOU.exe	30
PID 1448 wrote to memory of 2776	1448	YOU.exe	30
PID 1448 wrote to memory of 2776	1448	YOU.exe	30
PID 1448 wrote to memory of 2776	1448	YOU.exe	30
PID 2776 wrote to memory of 2688	2776	avenses.exe	31
PID 2776 wrote to memory of 2688	2776	avenses.exe	31
PID 2776 wrote to memory of 2688	2776	avenses.exe	31
PID 2776 wrote to memory of 2688	2776	avenses.exe	31
PID 2776 wrote to memory of 2688	2776	avenses.exe	31
PID 2776 wrote to memory of 2688	2776	avenses.exe	31
PID 2776 wrote to memory of 2688	2776	avenses.exe	31
PID 2776 wrote to memory of 2688	2776	avenses.exe	31
PID 2688 wrote to memory of 2920	2688	RegSvcs.exe	32
PID 2688 wrote to memory of 2920	2688	RegSvcs.exe	32
PID 2688 wrote to memory of 2920	2688	RegSvcs.exe	32
PID 2688 wrote to memory of 2920	2688	RegSvcs.exe	32
PID 2688 wrote to memory of 2564	2688	RegSvcs.exe	34
PID 2688 wrote to memory of 2564	2688	RegSvcs.exe	34
PID 2688 wrote to memory of 2564	2688	RegSvcs.exe	34
PID 2688 wrote to memory of 2564	2688	RegSvcs.exe	34
PID 2688 wrote to memory of 1732	2688	RegSvcs.exe	36
PID 2688 wrote to memory of 1732	2688	RegSvcs.exe	36
PID 2688 wrote to memory of 1732	2688	RegSvcs.exe	36
PID 2688 wrote to memory of 1732	2688	RegSvcs.exe	36
PID 2688 wrote to memory of 2916	2688	RegSvcs.exe	38
PID 2688 wrote to memory of 2916	2688	RegSvcs.exe	38
PID 2688 wrote to memory of 2916	2688	RegSvcs.exe	38
PID 2688 wrote to memory of 2916	2688	RegSvcs.exe	38
PID 2688 wrote to memory of 2612	2688	RegSvcs.exe	40
PID 2688 wrote to memory of 2612	2688	RegSvcs.exe	40
PID 2688 wrote to memory of 2612	2688	RegSvcs.exe	40
PID 2688 wrote to memory of 2612	2688	RegSvcs.exe	40
PID 2024 wrote to memory of 1156	2024	taskeng.exe	44
PID 2024 wrote to memory of 1156	2024	taskeng.exe	44
PID 2024 wrote to memory of 1156	2024	taskeng.exe	44
PID 2024 wrote to memory of 1156	2024	taskeng.exe	44
PID 2024 wrote to memory of 1156	2024	taskeng.exe	44
PID 2024 wrote to memory of 1156	2024	taskeng.exe	44
PID 2024 wrote to memory of 1156	2024	taskeng.exe	44
PID 2024 wrote to memory of 640	2024	taskeng.exe	47
PID 2024 wrote to memory of 640	2024	taskeng.exe	47
PID 2024 wrote to memory of 640	2024	taskeng.exe	47
PID 2024 wrote to memory of 640	2024	taskeng.exe	47
PID 2024 wrote to memory of 640	2024	taskeng.exe	47
PID 2024 wrote to memory of 640	2024	taskeng.exe	47
PID 2024 wrote to memory of 640	2024	taskeng.exe	47

C:\Users\Admin\AppData\Local\Temp\YOU.exe
"C:\Users\Admin\AppData\Local\Temp\YOU.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Users\Admin\AppData\Local\untrashed\avenses.exe
  "C:\Users\Admin\AppData\Local\Temp\YOU.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\YOU.exe"
    3⤵
    - Drops startup file
    - Loads dropped DLL
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2688
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2920
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RegSvcs.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2564
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient2.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1732
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient2.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2916
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient2" /tr "C:\Users\Admin\AppData\Roaming\XClient2.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2612

C:\Windows\system32\taskeng.exe
taskeng.exe {72180ED0-C09A-48E8-8243-B1A54F68ADA7} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Users\Admin\AppData\Roaming\XClient2.exe
  C:\Users\Admin\AppData\Roaming\XClient2.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1156
- C:\Users\Admin\AppData\Roaming\XClient2.exe
  C:\Users\Admin\AppData\Roaming\XClient2.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:640

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

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
2c1e2d659e249e316fa74001f4c821a1

SHA1
bff64dfd0e4cc8e09b2d0e0a1ef0a7a857f0a27c

SHA256
eb53d351178b27c17ce347fc3bedb11566dc3d0143f8be6effb283b395e7d1c7

SHA512
ca09ad1fbf1bbe42c49650b8350c395cd900e1bba9037a14ff763613375f7a4ebcf05929b8134546d234f5411b43938a45de7463018a890623a491d54b062a0a

Download Submit
\Users\Admin\AppData\Local\untrashed\avenses.exe

Filesize
955KB

MD5
eb86db27432e31d958931668b20dd18d

SHA1
12a8af666e5f1018071b46cb04df4a34384bb6be

SHA256
5f0a6832da6604ee51d0072fa8ae6ad9b0151074c30c6a08acaad43d339abdf7

SHA512
545b2ccdadb21aadc12a820ede8d4a730614d430816745aae817a4110cc36fa6891ff04e206d020f914debd388257222afcbbead55a2d88cd13e9e72b9ac938e

Download Submit
\Users\Admin\AppData\Roaming\XClient2.exe

Filesize
44KB

MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
memory/640-56-0x0000000001050000-0x000000000105E000-memory.dmp

Filesize
56KB

Download
memory/640-57-0x0000000000200000-0x0000000000220000-memory.dmp

Filesize
128KB

Download
memory/1156-52-0x0000000000370000-0x000000000037E000-memory.dmp

Filesize
56KB

Download
memory/1156-53-0x00000000008C0000-0x00000000008E0000-memory.dmp

Filesize
128KB

Download
memory/1448-5-0x0000000000120000-0x0000000000128000-memory.dmp

Filesize
32KB

Download
memory/2688-24-0x0000000073D3E000-0x0000000073D3F000-memory.dmp

Filesize
4KB

Download
memory/2688-23-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2688-47-0x0000000073D30000-0x000000007441E000-memory.dmp

Filesize
6.9MB

Download
memory/2688-48-0x0000000073D3E000-0x0000000073D3F000-memory.dmp

Filesize
4KB

Download
memory/2688-49-0x0000000073D30000-0x000000007441E000-memory.dmp

Filesize
6.9MB

Download
memory/2688-21-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2688-19-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download