xworm | 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
04/11/2024, 16:44

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General

Target
mygame.exe
Size 137KB
Sample241104-t835sswlan
SHA256 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3
MD5 1a925fce50787a5028b73dd32e0c7dce
SHA1 7205d5c3d7efbc5805eb0b343a1bc83903e7589c
SHA512 ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8
SSDEEP 3072:6fjh7Fv9fjOwiBz65/M6If+3Js+3JFkKeTno:8hJv9AxBt25
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

147.185.221.23:48450

Mutex

2YsFPOHVMLfmF9px

Attributes

Install_directory
%AppData%
install_file
Update.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral5/memory/844-1-0x0000000000130000-0x0000000000158000-memory.dmp	family_xworm
behavioral5/files/0x001e00000002aa60-56.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
3800	powershell.exe
2276	powershell.exe
3076	powershell.exe
1348	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
1060	Update.exe
2400	Update.exe
2296	Update.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-1-5-21-3870231897-2573482396-1083937135-1000\Software\Microsoft\Windows\CurrentVersion\Run\Update = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	mygame.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
3780	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3800	powershell.exe
3800	powershell.exe
2276	powershell.exe
2276	powershell.exe
3076	powershell.exe
3076	powershell.exe
1348	powershell.exe
1348	powershell.exe
844	mygame.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	844	mygame.exe
Token: SeDebugPrivilege	3800	powershell.exe
Token: SeDebugPrivilege	2276	powershell.exe
Token: SeDebugPrivilege	3076	powershell.exe
Token: SeDebugPrivilege	1348	powershell.exe
Token: SeDebugPrivilege	844	mygame.exe
Token: SeDebugPrivilege	1060	Update.exe
Token: SeDebugPrivilege	2400	Update.exe
Token: SeDebugPrivilege	2296	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
844	mygame.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 3800	844	mygame.exe	81
PID 844 wrote to memory of 3800	844	mygame.exe	81
PID 844 wrote to memory of 2276	844	mygame.exe	83
PID 844 wrote to memory of 2276	844	mygame.exe	83
PID 844 wrote to memory of 3076	844	mygame.exe	85
PID 844 wrote to memory of 3076	844	mygame.exe	85
PID 844 wrote to memory of 1348	844	mygame.exe	87
PID 844 wrote to memory of 1348	844	mygame.exe	87
PID 844 wrote to memory of 3780	844	mygame.exe	89
PID 844 wrote to memory of 3780	844	mygame.exe	89

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\mygame.exe
"C:\Users\Admin\AppData\Local\Temp\mygame.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:844
- 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\mygame.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3800
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'mygame.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2276
- 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\Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3076
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1348
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Update" /tr "C:\Users\Admin\AppData\Roaming\Update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3780

C:\Users\Admin\AppData\Roaming\Update.exe
C:\Users\Admin\AppData\Roaming\Update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1060

C:\Users\Admin\AppData\Roaming\Update.exe
C:\Users\Admin\AppData\Roaming\Update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2400

C:\Users\Admin\AppData\Roaming\Update.exe
C:\Users\Admin\AppData\Roaming\Update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2296

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

Update.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Update.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 0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888
MD5 1a9fa92a4f2e2ec9e244d43a6a4f8fb9
SHA1 9910190edfaccece1dfcc1d92e357772f5dae8f7
SHA512 5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 3952d5b543e5cb0cb84014f4ad9f5f1b7166f592d28640cbc3d914d0e6f41d2e
MD5 050567a067ffea4eb40fe2eefebdc1ee
SHA1 6e1fb2c7a7976e0724c532449e97722787a00fec
SHA512 341ad71ef7e850b10e229666312e4bca87a0ed9fe25ba4b0ab65661d5a0efa855db0592153106da07134d8fc2c6c0e44709bf38183c9a574a1fa543189971259
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 83387ce468d717a7b4ba238af2273da873b731a13cc35604f775a31fa0ac70ea
MD5 e07eea85a8893f23fb814cf4b3ed974c
SHA1 8a8125b2890bbddbfc3531d0ee4393dbbf5936fe
SHA512 9d4808d8a261005391388b85da79e4c5396bdded6e7e5ce3a3a23e7359d1aa1fb983b4324f97e0afec6e8ed9d898322ca258dd7cda654456dd7e84c9cbd509df
MD5 SHA1 SHA512

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__PSScriptPolicyTest_ip2oawg2.3vv.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ip2oawg2.3vv.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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Update.exe

Path C:\Users\Admin\AppData\Roaming\Update.exe
Size 137KB
SHA256 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3
MD5 1a925fce50787a5028b73dd32e0c7dce
SHA1 7205d5c3d7efbc5805eb0b343a1bc83903e7589c
SHA512 ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8
SSDEEP 3072:6fjh7Fv9fjOwiBz65/M6If+3Js+3JFkKeTno:8hJv9AxBt25
MD5 SHA1 SHA512 SSDEEP

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memory/844-1-0x0000000000130000-0x0000000000158000-memory.dmp

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memory/844-0-0x00007FF8EB363000-0x00007FF8EB365000-memory.dmp

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memory/844-55-0x00007FF8EB360000-0x00007FF8EBE22000-memory.dmp

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memory/844-54-0x00007FF8EB363000-0x00007FF8EB365000-memory.dmp

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memory/844-53-0x00007FF8EB360000-0x00007FF8EBE22000-memory.dmp

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memory/3800-12-0x00007FF8EB360000-0x00007FF8EBE22000-memory.dmp

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memory/3800-17-0x00007FF8EB360000-0x00007FF8EBE22000-memory.dmp

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memory/3800-16-0x00007FF8EB360000-0x00007FF8EBE22000-memory.dmp

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memory/3800-13-0x00007FF8EB360000-0x00007FF8EBE22000-memory.dmp

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memory/3800-11-0x00007FF8EB360000-0x00007FF8EBE22000-memory.dmp

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memory/3800-2-0x000002DAFC890000-0x000002DAFC8B2000-memory.dmp

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