xworm | 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

Analysis

max time kernel
106s
max time network
156s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
04-11-2024 16:40

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General

Target

mygame.exe
Size

137KB
MD5

1a925fce50787a5028b73dd32e0c7dce
SHA1

7205d5c3d7efbc5805eb0b343a1bc83903e7589c
SHA256

00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3
SHA512

ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8
SSDEEP

3072:6fjh7Fv9fjOwiBz65/M6If+3Js+3JFkKeTno:8hJv9AxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

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
behavioral4/memory/4064-1-0x0000000000600000-0x0000000000628000-memory.dmp	family_xworm
behavioral4/files/0x002c000000044f8b-62.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
2336	powershell.exe
3364	powershell.exe
3480	powershell.exe
2188	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-1-5-21-870806430-2618236806-3023919190-1000\Control Panel\International\Geo\Nation	mygame.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 2 IoCs

pid	Process
4692	Update.exe
3468	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-1-5-21-870806430-2618236806-3023919190-1000\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
4948	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3364	powershell.exe
3364	powershell.exe
3480	powershell.exe
3480	powershell.exe
2188	powershell.exe
2188	powershell.exe
2336	powershell.exe
2336	powershell.exe
4064	mygame.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4064	mygame.exe
Token: SeDebugPrivilege	3364	powershell.exe
Token: SeIncreaseQuotaPrivilege	3364	powershell.exe
Token: SeSecurityPrivilege	3364	powershell.exe
Token: SeTakeOwnershipPrivilege	3364	powershell.exe
Token: SeLoadDriverPrivilege	3364	powershell.exe
Token: SeSystemProfilePrivilege	3364	powershell.exe
Token: SeSystemtimePrivilege	3364	powershell.exe
Token: SeProfSingleProcessPrivilege	3364	powershell.exe
Token: SeIncBasePriorityPrivilege	3364	powershell.exe
Token: SeCreatePagefilePrivilege	3364	powershell.exe
Token: SeBackupPrivilege	3364	powershell.exe
Token: SeRestorePrivilege	3364	powershell.exe
Token: SeShutdownPrivilege	3364	powershell.exe
Token: SeDebugPrivilege	3364	powershell.exe
Token: SeSystemEnvironmentPrivilege	3364	powershell.exe
Token: SeRemoteShutdownPrivilege	3364	powershell.exe
Token: SeUndockPrivilege	3364	powershell.exe
Token: SeManageVolumePrivilege	3364	powershell.exe
Token: 33	3364	powershell.exe
Token: 34	3364	powershell.exe
Token: 35	3364	powershell.exe
Token: 36	3364	powershell.exe
Token: SeDebugPrivilege	3480	powershell.exe
Token: SeIncreaseQuotaPrivilege	3480	powershell.exe
Token: SeSecurityPrivilege	3480	powershell.exe
Token: SeTakeOwnershipPrivilege	3480	powershell.exe
Token: SeLoadDriverPrivilege	3480	powershell.exe
Token: SeSystemProfilePrivilege	3480	powershell.exe
Token: SeSystemtimePrivilege	3480	powershell.exe
Token: SeProfSingleProcessPrivilege	3480	powershell.exe
Token: SeIncBasePriorityPrivilege	3480	powershell.exe
Token: SeCreatePagefilePrivilege	3480	powershell.exe
Token: SeBackupPrivilege	3480	powershell.exe
Token: SeRestorePrivilege	3480	powershell.exe
Token: SeShutdownPrivilege	3480	powershell.exe
Token: SeDebugPrivilege	3480	powershell.exe
Token: SeSystemEnvironmentPrivilege	3480	powershell.exe
Token: SeRemoteShutdownPrivilege	3480	powershell.exe
Token: SeUndockPrivilege	3480	powershell.exe
Token: SeManageVolumePrivilege	3480	powershell.exe
Token: 33	3480	powershell.exe
Token: 34	3480	powershell.exe
Token: 35	3480	powershell.exe
Token: 36	3480	powershell.exe
Token: SeDebugPrivilege	2188	powershell.exe
Token: SeIncreaseQuotaPrivilege	2188	powershell.exe
Token: SeSecurityPrivilege	2188	powershell.exe
Token: SeTakeOwnershipPrivilege	2188	powershell.exe
Token: SeLoadDriverPrivilege	2188	powershell.exe
Token: SeSystemProfilePrivilege	2188	powershell.exe
Token: SeSystemtimePrivilege	2188	powershell.exe
Token: SeProfSingleProcessPrivilege	2188	powershell.exe
Token: SeIncBasePriorityPrivilege	2188	powershell.exe
Token: SeCreatePagefilePrivilege	2188	powershell.exe
Token: SeBackupPrivilege	2188	powershell.exe
Token: SeRestorePrivilege	2188	powershell.exe
Token: SeShutdownPrivilege	2188	powershell.exe
Token: SeDebugPrivilege	2188	powershell.exe
Token: SeSystemEnvironmentPrivilege	2188	powershell.exe
Token: SeRemoteShutdownPrivilege	2188	powershell.exe
Token: SeUndockPrivilege	2188	powershell.exe
Token: SeManageVolumePrivilege	2188	powershell.exe
Token: 33	2188	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4064	mygame.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 3364	4064	mygame.exe	83
PID 4064 wrote to memory of 3364	4064	mygame.exe	83
PID 4064 wrote to memory of 3480	4064	mygame.exe	86
PID 4064 wrote to memory of 3480	4064	mygame.exe	86
PID 4064 wrote to memory of 2188	4064	mygame.exe	88
PID 4064 wrote to memory of 2188	4064	mygame.exe	88
PID 4064 wrote to memory of 2336	4064	mygame.exe	90
PID 4064 wrote to memory of 2336	4064	mygame.exe	90
PID 4064 wrote to memory of 4948	4064	mygame.exe	96
PID 4064 wrote to memory of 4948	4064	mygame.exe	96

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⤵
- 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:4064
- 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:3364
- 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:3480
- 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:2188
- 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
  PID:2336
- 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:4948

C:\Users\Admin\AppData\Roaming\Update.exe
"C:\Users\Admin\AppData\Roaming\Update.exe"
1⤵
- Executes dropped EXE
PID:4692

C:\Users\Admin\AppData\Roaming\Update.exe
"C:\Users\Admin\AppData\Roaming\Update.exe"
1⤵
- Executes dropped EXE
PID:3468

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\Update.exe.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
6a807b1c91ac66f33f88a787d64904c1

SHA1
83c554c7de04a8115c9005709e5cd01fca82c5d3

SHA256
155314c1c86d8d4e5b802f1eef603c5dd4a2f7c949f069a38af5ba4959bd8256

SHA512
29f2d9f30fc081e7fe6e9fb772c810c9be0422afdc6aff5a286f49a990ededebcf0d083798c2d9f41ad8434393c6d0f5fa6df31226d9c3511ba2a41eb4a65200

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

Filesize
1KB

MD5
8a5f9d6b4fb94feb9939154d892e67ef

SHA1
53a0e1e517ccd4d8a558a7e4b528e396766d3c64

SHA256
d120a7d216c46a0258a9342efac9fc0bbe1999ab9d1d42b6092ef253dbb5a6f7

SHA512
29bb9952a4b9ff4f4f9a1dc9a52dde92c19086242247972849ed5f04de7090f036503b8cc50237a11bf1a16f5d8125264b1f491f7ae65533bad22c9b14e0463a

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

Filesize
1KB

MD5
6e3e358edce21bdf63e229dbd6407c94

SHA1
1f021981023a425eae0fa6e95a8c7cffe9cae309

SHA256
2f894745561a691b796a4ca7baa823e31f6f9b4716e6a6aab44f3324b43a3f34

SHA512
64da856edcc9b7528c31ec5224bbcc6baec3374f2109fd2e8216d06063121837ca37413d483e686d01fcf28164289d3350b5369b6161f2aecf73e7de8d7bd89b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lygc3sqw.fki.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Update.exe

Filesize
137KB

MD5
1a925fce50787a5028b73dd32e0c7dce

SHA1
7205d5c3d7efbc5805eb0b343a1bc83903e7589c

SHA256
00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

SHA512
ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8

Download Submit
memory/3364-13-0x00007FF986250000-0x00007FF986D12000-memory.dmp

Filesize
10.8MB

Download
memory/3364-16-0x00007FF986250000-0x00007FF986D12000-memory.dmp

Filesize
10.8MB

Download
memory/3364-19-0x00007FF986250000-0x00007FF986D12000-memory.dmp

Filesize
10.8MB

Download
memory/3364-15-0x00007FF986250000-0x00007FF986D12000-memory.dmp

Filesize
10.8MB

Download
memory/3364-14-0x00007FF986250000-0x00007FF986D12000-memory.dmp

Filesize
10.8MB

Download
memory/3364-12-0x00007FF986250000-0x00007FF986D12000-memory.dmp

Filesize
10.8MB

Download
memory/3364-2-0x000001AA50AC0000-0x000001AA50AE2000-memory.dmp

Filesize
136KB

Download
memory/4064-0-0x00007FF986253000-0x00007FF986255000-memory.dmp

Filesize
8KB

Download
memory/4064-42-0x00007FF986253000-0x00007FF986255000-memory.dmp

Filesize
8KB

Download
memory/4064-59-0x00007FF986250000-0x00007FF986D12000-memory.dmp

Filesize
10.8MB

Download
memory/4064-60-0x00007FF986250000-0x00007FF986D12000-memory.dmp

Filesize
10.8MB

Download
memory/4064-65-0x0000000002830000-0x000000000283C000-memory.dmp

Filesize
48KB

Download
memory/4064-1-0x0000000000600000-0x0000000000628000-memory.dmp

Filesize
160KB

Download