xworm | 48991778a4ecb77556b3c2110c63c5bc242c79a20ec6205fcff4198118dcf78f

Analysis

max time kernel
145s
max time network
144s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
16-11-2024 18:08

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General

Target

Api-AutoUpdater.exe
Size

84KB
MD5

e7d61465db5a82ededa06183a6c3f665
SHA1

0267f3612ef089422c817864858ee705b40ad0d4
SHA256

48991778a4ecb77556b3c2110c63c5bc242c79a20ec6205fcff4198118dcf78f
SHA512

6ac7e0892dd1a2cfca163957cfa54b10615f53ff96abc029f7ff7627d2a4dff530fba6078d0a9b4e31b6f9c9f89ef158797e97b2d7d60210dc79b6e7a8225375
SSDEEP

1536:aoJMQoKDp9/NSDM39HKboubUfGdDndBgJdIcMH6rVV/dKFObUPwckjdiz:aoKCD/cA3dMbUfkMdIcM6r/doObWwcZz

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

where-reverse.gl.at.ply.gg:18649

Attributes

Install_directory
%ProgramData%
install_file
Helper.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/1620-1-0x0000000000130000-0x000000000014C000-memory.dmp	family_xworm
behavioral1/files/0x0028000000045056-60.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
420	powershell.exe
1556	powershell.exe
1076	powershell.exe
1992	powershell.exe

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-1-5-21-641261377-2215826147-608237349-1000\Control Panel\International\Geo\Nation	Api-AutoUpdater.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4952	WindowsDefender
3076	WindowsDefender

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-1-5-21-641261377-2215826147-608237349-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsDefender = "C:\\ProgramData\\WindowsDefender"	Api-AutoUpdater.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
17	ip-api.com

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
5024	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
420	powershell.exe
420	powershell.exe
1556	powershell.exe
1556	powershell.exe
1076	powershell.exe
1076	powershell.exe
1992	powershell.exe
1992	powershell.exe
1620	Api-AutoUpdater.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	Api-AutoUpdater.exe
Token: SeDebugPrivilege	420	powershell.exe
Token: SeIncreaseQuotaPrivilege	420	powershell.exe
Token: SeSecurityPrivilege	420	powershell.exe
Token: SeTakeOwnershipPrivilege	420	powershell.exe
Token: SeLoadDriverPrivilege	420	powershell.exe
Token: SeSystemProfilePrivilege	420	powershell.exe
Token: SeSystemtimePrivilege	420	powershell.exe
Token: SeProfSingleProcessPrivilege	420	powershell.exe
Token: SeIncBasePriorityPrivilege	420	powershell.exe
Token: SeCreatePagefilePrivilege	420	powershell.exe
Token: SeBackupPrivilege	420	powershell.exe
Token: SeRestorePrivilege	420	powershell.exe
Token: SeShutdownPrivilege	420	powershell.exe
Token: SeDebugPrivilege	420	powershell.exe
Token: SeSystemEnvironmentPrivilege	420	powershell.exe
Token: SeRemoteShutdownPrivilege	420	powershell.exe
Token: SeUndockPrivilege	420	powershell.exe
Token: SeManageVolumePrivilege	420	powershell.exe
Token: 33	420	powershell.exe
Token: 34	420	powershell.exe
Token: 35	420	powershell.exe
Token: 36	420	powershell.exe
Token: SeDebugPrivilege	1556	powershell.exe
Token: SeIncreaseQuotaPrivilege	1556	powershell.exe
Token: SeSecurityPrivilege	1556	powershell.exe
Token: SeTakeOwnershipPrivilege	1556	powershell.exe
Token: SeLoadDriverPrivilege	1556	powershell.exe
Token: SeSystemProfilePrivilege	1556	powershell.exe
Token: SeSystemtimePrivilege	1556	powershell.exe
Token: SeProfSingleProcessPrivilege	1556	powershell.exe
Token: SeIncBasePriorityPrivilege	1556	powershell.exe
Token: SeCreatePagefilePrivilege	1556	powershell.exe
Token: SeBackupPrivilege	1556	powershell.exe
Token: SeRestorePrivilege	1556	powershell.exe
Token: SeShutdownPrivilege	1556	powershell.exe
Token: SeDebugPrivilege	1556	powershell.exe
Token: SeSystemEnvironmentPrivilege	1556	powershell.exe
Token: SeRemoteShutdownPrivilege	1556	powershell.exe
Token: SeUndockPrivilege	1556	powershell.exe
Token: SeManageVolumePrivilege	1556	powershell.exe
Token: 33	1556	powershell.exe
Token: 34	1556	powershell.exe
Token: 35	1556	powershell.exe
Token: 36	1556	powershell.exe
Token: SeDebugPrivilege	1076	powershell.exe
Token: SeIncreaseQuotaPrivilege	1076	powershell.exe
Token: SeSecurityPrivilege	1076	powershell.exe
Token: SeTakeOwnershipPrivilege	1076	powershell.exe
Token: SeLoadDriverPrivilege	1076	powershell.exe
Token: SeSystemProfilePrivilege	1076	powershell.exe
Token: SeSystemtimePrivilege	1076	powershell.exe
Token: SeProfSingleProcessPrivilege	1076	powershell.exe
Token: SeIncBasePriorityPrivilege	1076	powershell.exe
Token: SeCreatePagefilePrivilege	1076	powershell.exe
Token: SeBackupPrivilege	1076	powershell.exe
Token: SeRestorePrivilege	1076	powershell.exe
Token: SeShutdownPrivilege	1076	powershell.exe
Token: SeDebugPrivilege	1076	powershell.exe
Token: SeSystemEnvironmentPrivilege	1076	powershell.exe
Token: SeRemoteShutdownPrivilege	1076	powershell.exe
Token: SeUndockPrivilege	1076	powershell.exe
Token: SeManageVolumePrivilege	1076	powershell.exe
Token: 33	1076	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1620	Api-AutoUpdater.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 420	1620	Api-AutoUpdater.exe	86
PID 1620 wrote to memory of 420	1620	Api-AutoUpdater.exe	86
PID 1620 wrote to memory of 1556	1620	Api-AutoUpdater.exe	90
PID 1620 wrote to memory of 1556	1620	Api-AutoUpdater.exe	90
PID 1620 wrote to memory of 1076	1620	Api-AutoUpdater.exe	92
PID 1620 wrote to memory of 1076	1620	Api-AutoUpdater.exe	92
PID 1620 wrote to memory of 1992	1620	Api-AutoUpdater.exe	94
PID 1620 wrote to memory of 1992	1620	Api-AutoUpdater.exe	94
PID 1620 wrote to memory of 5024	1620	Api-AutoUpdater.exe	98
PID 1620 wrote to memory of 5024	1620	Api-AutoUpdater.exe	98

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\Api-AutoUpdater.exe
"C:\Users\Admin\AppData\Local\Temp\Api-AutoUpdater.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:1620
- 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\Api-AutoUpdater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:420
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Api-AutoUpdater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1556
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\WindowsDefender'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1076
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WindowsDefender'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1992
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WindowsDefender" /tr "C:\ProgramData\WindowsDefender"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5024

C:\ProgramData\WindowsDefender
"C:\ProgramData\WindowsDefender"
1⤵
- Executes dropped EXE
PID:4952

C:\ProgramData\WindowsDefender
"C:\ProgramData\WindowsDefender"
1⤵
- Executes dropped EXE
PID:3076

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:\ProgramData\WindowsDefender

Filesize
84KB

MD5
e7d61465db5a82ededa06183a6c3f665

SHA1
0267f3612ef089422c817864858ee705b40ad0d4

SHA256
48991778a4ecb77556b3c2110c63c5bc242c79a20ec6205fcff4198118dcf78f

SHA512
6ac7e0892dd1a2cfca163957cfa54b10615f53ff96abc029f7ff7627d2a4dff530fba6078d0a9b4e31b6f9c9f89ef158797e97b2d7d60210dc79b6e7a8225375

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

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

Download Submit
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
7881103cdd708794b778f794ad4fec02

SHA1
57ad4936e89341cf2bcc7af52f2cd1908084ebd0

SHA256
043dea147183bf3cdf1dfa9a2938661361e70b1b118631f91184122be37941b6

SHA512
c867d5017fe5e153f848bac6da1667411b6a80af50db657f72dbae1ea9dc20b3026ae53beadc2612ea070fe24ddb164a0295b26f808d2973d4cb1a515c90200c

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

Filesize
1KB

MD5
ebaf2844abba315bb118ac4d5052bf56

SHA1
1f1ba57a8071a1bf2a18520fc8e2620ed0b6077f

SHA256
db234313e20163d0954d4379d4f11d285a046d7580097e49616c9ed817727bd8

SHA512
4c40012cd66f82324882b1a30484da9987bf405c9f9777eddbdb3d7d12086f91f44c58070d90940d73ffefb1e67560cfd08909f2a3224ee2f75cbcb9edeadbab

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rlbsrnfc.wru.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/420-4-0x00007FFD52E30000-0x00007FFD538F2000-memory.dmp

Filesize
10.8MB

Download
memory/420-16-0x00007FFD52E30000-0x00007FFD538F2000-memory.dmp

Filesize
10.8MB

Download
memory/420-19-0x00007FFD52E30000-0x00007FFD538F2000-memory.dmp

Filesize
10.8MB

Download
memory/420-20-0x00007FFD52E30000-0x00007FFD538F2000-memory.dmp

Filesize
10.8MB

Download
memory/420-15-0x00007FFD52E30000-0x00007FFD538F2000-memory.dmp

Filesize
10.8MB

Download
memory/420-14-0x000001E9DABB0000-0x000001E9DABD2000-memory.dmp

Filesize
136KB

Download
memory/420-3-0x00007FFD52E30000-0x00007FFD538F2000-memory.dmp

Filesize
10.8MB

Download
memory/1620-32-0x00007FFD52E33000-0x00007FFD52E35000-memory.dmp

Filesize
8KB

Download
memory/1620-0-0x00007FFD52E33000-0x00007FFD52E35000-memory.dmp

Filesize
8KB

Download
memory/1620-59-0x00007FFD52E30000-0x00007FFD538F2000-memory.dmp

Filesize
10.8MB

Download
memory/1620-2-0x00007FFD52E30000-0x00007FFD538F2000-memory.dmp

Filesize
10.8MB

Download
memory/1620-1-0x0000000000130000-0x000000000014C000-memory.dmp

Filesize
112KB

Download