xworm | c7b4ab9cf38108798831e0729182cd723b8c5704b976878066b7123f15734807

Analysis

max time kernel
102s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20250619-en
resource tags

arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
submitted
13/08/2025, 04:27

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General

Target
XWormClient.exe
Size 71KB
Sample250813-e28dlsv1ct
SHA256 c7b4ab9cf38108798831e0729182cd723b8c5704b976878066b7123f15734807
MD5 356b9458ba747cfcbfb4d081d8fe6e67
SHA1 764734b1e20435e1864bf7872d9020b1f998e4c6
SHA512 db8de0e1d5eff2d84a54b759bb5f20161e246b4ec11632a8b08fb3384322a993f8b26947f7a853d39b1cc892e3ef327565b6796aff835e7507f681c1dbc1cfff
SSDEEP 1536:Eq2I6WbhJuU57nID+b5JIGGItwiZ+ff/6FOV+U4e9GhS:fbnuUtC+bbnZrOV+U4WGA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

XWorm V6.0

return-aug.gl.at.ply.gg:39431

Attributes

Install_directory
%AppData%
install_file
Com Surrogate.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2056-0-0x0000000000640000-0x0000000000658000-memory.dmp	family_xworm
behavioral2/files/0x001e00000002b0cb-53.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
5492	powershell.exe
2332	powershell.exe
5196	powershell.exe
5612	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4352	Com Surrogate.exe
1348	Com Surrogate.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-1-5-21-4024151881-1944119507-1574723210-1000\Software\Microsoft\Windows\CurrentVersion\Run\Com Surrogate = "C:\\Users\\Admin\\AppData\\Roaming\\Com Surrogate.exe"	XWormClient.exe

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
4944	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
5492	powershell.exe
5492	powershell.exe
2332	powershell.exe
2332	powershell.exe
5196	powershell.exe
5196	powershell.exe
5612	powershell.exe
5612	powershell.exe
2056	XWormClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2056	XWormClient.exe
Token: SeDebugPrivilege	5492	powershell.exe
Token: SeDebugPrivilege	2332	powershell.exe
Token: SeDebugPrivilege	5196	powershell.exe
Token: SeDebugPrivilege	5612	powershell.exe
Token: SeDebugPrivilege	2056	XWormClient.exe
Token: SeDebugPrivilege	4352	Com Surrogate.exe
Token: SeDebugPrivilege	1348	Com Surrogate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2056	XWormClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2056 wrote to memory of 5492	2056	XWormClient.exe	79
PID 2056 wrote to memory of 5492	2056	XWormClient.exe	79
PID 2056 wrote to memory of 2332	2056	XWormClient.exe	81
PID 2056 wrote to memory of 2332	2056	XWormClient.exe	81
PID 2056 wrote to memory of 5196	2056	XWormClient.exe	83
PID 2056 wrote to memory of 5196	2056	XWormClient.exe	83
PID 2056 wrote to memory of 5612	2056	XWormClient.exe	85
PID 2056 wrote to memory of 5612	2056	XWormClient.exe	85
PID 2056 wrote to memory of 4944	2056	XWormClient.exe	87
PID 2056 wrote to memory of 4944	2056	XWormClient.exe	87

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\XWormClient.exe
"C:\Users\Admin\AppData\Local\Temp\XWormClient.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:2056
- 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\XWormClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5492
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XWormClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2332
- 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\Com Surrogate.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5196
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Com Surrogate.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5612
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Com Surrogate" /tr "C:\Users\Admin\AppData\Roaming\Com Surrogate.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4944

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\Com Surrogate.exe
1⤵
PID:6020

C:\Users\Admin\AppData\Roaming\Com Surrogate.exe
"C:\Users\Admin\AppData\Roaming\Com Surrogate.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4352

C:\Users\Admin\AppData\Roaming\Com Surrogate.exe
"C:\Users\Admin\AppData\Roaming\Com Surrogate.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1348

Network

MITRE ATT&CK Enterprise v16

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

Com Surrogate.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Com Surrogate.exe.log
Size 654B
SHA256 e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3
MD5 2cbbb74b7da1f720b48ed31085cbd5b8
SHA1 79caa9a3ea8abe1b9c4326c3633da64a5f724964
SHA512 ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9
MD5 SHA1 SHA512

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powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
MD5 627073ee3ca9676911bee35548eff2b8
SHA1 4c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA512 3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 911efc5cf9cbeb697543eb3242f5297e1be46dd6603a390140a9ff031ed9e1e8
MD5 05b3cd21c1ec02f04caba773186ee8d0
SHA1 39e790bfe10abf55b74dfb3603df8fcf6b5e6edb
SHA512 e751008b032394817beb46937fd93a73be97254c2be94dd42f22fb1306d2715c653ece16fa96eab1a3e73811936768cea6b37888437086fc6f3e3e793a2515eb
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 529811e4d3496c559f3bd92cd877b93b719c3ac4834202aa76ab9e16e25f9319
MD5 6f0e62045515b66d0a0105abc22dbf19
SHA1 894d685122f3f3c9a3457df2f0b12b0e851b394c
SHA512 f78426df6032ee77f8c463446ab1c6bb4669ef7a2463dead831ec4ff83a07d7dc702d79372d8bcaf4594bf0fb6e11e9f027f3e0325de9b19be5f51b7b80ed54a
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 6a154251ec39c38714c70234f2b4cb6a5156885d62cab2a04a99f0dc4e92f00d
MD5 2c999f5ad351930d75fa6d11b929248d
SHA1 9453f77854f30068277951cedf3128ae58ad1b0c
SHA512 8d15b5a12c4ff275d248c16e5e76bfa50570b0ec6725d4203a9421596527b41ad4a045eec31f7c3abdca4a9d01aeb21aec852e87442b5340159029d4aaeb3d9c
MD5 SHA1 SHA512

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__PSScriptPolicyTest_25abzdn4.40p.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_25abzdn4.40p.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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Com Surrogate.exe

Path C:\Users\Admin\AppData\Roaming\Com Surrogate.exe
Size 71KB
SHA256 c7b4ab9cf38108798831e0729182cd723b8c5704b976878066b7123f15734807
MD5 356b9458ba747cfcbfb4d081d8fe6e67
SHA1 764734b1e20435e1864bf7872d9020b1f998e4c6
SHA512 db8de0e1d5eff2d84a54b759bb5f20161e246b4ec11632a8b08fb3384322a993f8b26947f7a853d39b1cc892e3ef327565b6796aff835e7507f681c1dbc1cfff
SSDEEP 1536:Eq2I6WbhJuU57nID+b5JIGGItwiZ+ff/6FOV+U4e9GhS:fbnuUtC+bbnZrOV+U4WGA
MD5 SHA1 SHA512 SSDEEP

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memory/2056-0-0x0000000000640000-0x0000000000658000-memory.dmp

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memory/2056-52-0x000000001B320000-0x000000001B330000-memory.dmp

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memory/2056-51-0x000000001B320000-0x000000001B330000-memory.dmp

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memory/5492-11-0x0000018B29510000-0x0000018B29532000-memory.dmp

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memory/5492-13-0x0000018B10EF0000-0x0000018B10F00000-memory.dmp

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memory/5492-12-0x0000018B10EF0000-0x0000018B10F00000-memory.dmp

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memory/5492-1-0x0000018B10EF0000-0x0000018B10F00000-memory.dmp

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memory/5492-2-0x0000018B10EF0000-0x0000018B10F00000-memory.dmp

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