xworm | adab3bc3b5ff06815461229d47960f67233e74a6e7771b80849956d8a1f3f603

Resubmissions

16-11-2024 03:38

241116-d7cnfsylhx 10

16-11-2024 03:34

241116-d46r5aylfy 10

Analysis

max time kernel
286s
max time network
300s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
16-11-2024 03:34

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General

Target

Calesial.exe
Size

167KB
MD5

dc87a72941b6080c4734c0c5d1ddd639
SHA1

2c28fcaf49352ed9eeb39137c1157831d3f4bb14
SHA256

adab3bc3b5ff06815461229d47960f67233e74a6e7771b80849956d8a1f3f603
SHA512

122e2dc75d332b507c0f33cc8a1726b475bc6552279b1a64acba55b939ac8c3760933b13f46842096c23a5d604bc2af1bf2dc3dc224ebc8ea8db8f2eefd92e9f
SSDEEP

3072:BAFLeHHWR38aZWbVQSobUzLOD57uvBz65/M6If+3Js+3JFkKeTnX:qlBWbmSbvxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

forums-advancement.gl.at.ply.gg:58291

Attributes

Install_directory
%Temp%
install_file
1336ffb22842d595e7ee3602982.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1936-1-0x0000000000E80000-0x0000000000EB0000-memory.dmp	family_xworm
behavioral2/files/0x001c00000002ab12-76.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
404	powershell.exe
1128	powershell.exe
5072	powershell.exe
3716	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1336ffb22842d595e7ee3602982.lnk	Calesial.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1336ffb22842d595e7ee3602982.lnk	Calesial.exe

Executes dropped EXE 5 IoCs

pid	Process
4656	1336ffb22842d595e7ee3602982.exe
4204	1336ffb22842d595e7ee3602982.exe
4072	1336ffb22842d595e7ee3602982.exe
4480	1336ffb22842d595e7ee3602982.exe
1848	1336ffb22842d595e7ee3602982.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-1-5-21-3973800497-2716210218-310192997-1000\Software\Microsoft\Windows\CurrentVersion\Run\1336ffb22842d595e7ee3602982 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1336ffb22842d595e7ee3602982.exe"	Calesial.exe

Looks up external IP address via web service 1 IoCs

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

flow	ioc
1	ip-api.com

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3973800497-2716210218-310192997-1000_Classes\Local Settings\MuiCache	MiniSearchHost.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
2984	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1128	powershell.exe
1128	powershell.exe
5072	powershell.exe
5072	powershell.exe
3716	powershell.exe
3716	powershell.exe
404	powershell.exe
404	powershell.exe
1936	Calesial.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	1936	Calesial.exe
Token: SeDebugPrivilege	1128	powershell.exe
Token: SeDebugPrivilege	5072	powershell.exe
Token: SeDebugPrivilege	3716	powershell.exe
Token: SeDebugPrivilege	404	powershell.exe
Token: SeDebugPrivilege	1936	Calesial.exe
Token: SeDebugPrivilege	4656	1336ffb22842d595e7ee3602982.exe
Token: SeDebugPrivilege	4204	1336ffb22842d595e7ee3602982.exe
Token: SeDebugPrivilege	4072	1336ffb22842d595e7ee3602982.exe
Token: SeDebugPrivilege	4480	1336ffb22842d595e7ee3602982.exe
Token: SeDebugPrivilege	1848	1336ffb22842d595e7ee3602982.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1936	Calesial.exe
4172	MiniSearchHost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 1128	1936	Calesial.exe	82
PID 1936 wrote to memory of 1128	1936	Calesial.exe	82
PID 1936 wrote to memory of 5072	1936	Calesial.exe	84
PID 1936 wrote to memory of 5072	1936	Calesial.exe	84
PID 1936 wrote to memory of 3716	1936	Calesial.exe	86
PID 1936 wrote to memory of 3716	1936	Calesial.exe	86
PID 1936 wrote to memory of 404	1936	Calesial.exe	88
PID 1936 wrote to memory of 404	1936	Calesial.exe	88
PID 1936 wrote to memory of 2984	1936	Calesial.exe	90
PID 1936 wrote to memory of 2984	1936	Calesial.exe	90

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\Calesial.exe
"C:\Users\Admin\AppData\Local\Temp\Calesial.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:1936
- 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\Calesial.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1128
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Calesial.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5072
- 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\1336ffb22842d595e7ee3602982.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3716
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '1336ffb22842d595e7ee3602982.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:404
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "1336ffb22842d595e7ee3602982" /tr "C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2984

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4172

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4048

C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4656

C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4204

C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4072

C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4480

C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1848

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\Microsoft\CLR_v4.0\UsageLogs\1336ffb22842d595e7ee3602982.exe.log

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
944B

MD5
80707036df540b6657f9d443b449e3c3

SHA1
b3e7d5d97274942164bf93c8c4b8a9b68713f46f

SHA256
6651e5f976619cef991deef61776cf43d4c4b3d7c551dd2192b647df71586ab0

SHA512
65e41e9e730fed4f7a7d3f6f35875a16948b897f87c8c70b371fd0ac7f0951814f6a75e7698665194bbc65a3665a684e7be229e7e24193b50483ae7e55eebf4f

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

Filesize
944B

MD5
1189a72e42e2321edf1ed3a8d5568687

SHA1
a2142fc754d6830de107d9d46f398483156f16a6

SHA256
009aee0a5f2d25ed79160e75cde58722def11663334ed20283e3afca32f971ea

SHA512
b1eb9b7aa7a57d0acec93b8152229b1f274a8d1b8f19133513486587f39b0636a9df89ddc6c2013e001d831f2b23cd0bb0fc084131824ea8e1dff134cd6d4f29

Download Submit
C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

Filesize
10KB

MD5
76fbe77cbc68f3bd5f0decad25775716

SHA1
2ebc2dea0b2224ea73fb5413d94ad38218122bf3

SHA256
8d59129db45c9f234318144380c9d167d89a9faa8e2a6aede9b5a3bcfdf650b6

SHA512
1a5d850914bd033defe42de3a333c2a7497927a07289258acd5ec08e973b4ed45030b0f299d6da5bac16ad607ed471b3db52a5c9676a532ecaa0836682618230

Download Submit
C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

Filesize
10KB

MD5
0c71204dc7dd088aa8f1b279e29d7bf5

SHA1
475dbeb8589312574e6b5f3ca2913b8b80af155b

SHA256
28f655f695c0992c73fa7b02fca2c93b65aec5b8c82297e1be30ed9016eb54a1

SHA512
f10ec78286923446833e4f19900a790be0440885688fe273a811648de090a765ea82ef8ccc062987ec12285e0de608b803671d01358a18dd4504f90845169826

Download Submit
C:\Users\Admin\AppData\Local\Temp\1336ffb22842d595e7ee3602982.exe

Filesize
167KB

MD5
dc87a72941b6080c4734c0c5d1ddd639

SHA1
2c28fcaf49352ed9eeb39137c1157831d3f4bb14

SHA256
adab3bc3b5ff06815461229d47960f67233e74a6e7771b80849956d8a1f3f603

SHA512
122e2dc75d332b507c0f33cc8a1726b475bc6552279b1a64acba55b939ac8c3760933b13f46842096c23a5d604bc2af1bf2dc3dc224ebc8ea8db8f2eefd92e9f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v5b30wi5.sfv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1128-19-0x00007FF844320000-0x00007FF844DE2000-memory.dmp

Filesize
10.8MB

Download
memory/1128-16-0x00007FF844320000-0x00007FF844DE2000-memory.dmp

Filesize
10.8MB

Download
memory/1128-15-0x00007FF844320000-0x00007FF844DE2000-memory.dmp

Filesize
10.8MB

Download
memory/1128-14-0x00007FF844320000-0x00007FF844DE2000-memory.dmp

Filesize
10.8MB

Download
memory/1128-13-0x000002EA7F7C0000-0x000002EA7F7E2000-memory.dmp

Filesize
136KB

Download
memory/1128-4-0x00007FF844320000-0x00007FF844DE2000-memory.dmp

Filesize
10.8MB

Download
memory/1128-3-0x00007FF844320000-0x00007FF844DE2000-memory.dmp

Filesize
10.8MB

Download
memory/1936-0-0x00007FF844323000-0x00007FF844325000-memory.dmp

Filesize
8KB

Download
memory/1936-51-0x00007FF844323000-0x00007FF844325000-memory.dmp

Filesize
8KB

Download
memory/1936-75-0x00007FF844320000-0x00007FF844DE2000-memory.dmp

Filesize
10.8MB

Download
memory/1936-2-0x00007FF844320000-0x00007FF844DE2000-memory.dmp

Filesize
10.8MB

Download
memory/1936-1-0x0000000000E80000-0x0000000000EB0000-memory.dmp

Filesize
192KB

Download