xworm | 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

Analysis

max time kernel
126s
max time network
152s
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 16:42

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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/3388-1-0x00000000008B0000-0x00000000008D8000-memory.dmp	family_xworm
behavioral4/files/0x002c000000045044-62.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
4348	powershell.exe
3660	powershell.exe
4592	powershell.exe
2792	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-1-5-21-1263212995-3575756360-1418101905-1000\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
2740	Update.exe
2876	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-1-5-21-1263212995-3575756360-1418101905-1000\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
216	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4348	powershell.exe
4348	powershell.exe
3660	powershell.exe
3660	powershell.exe
4592	powershell.exe
4592	powershell.exe
2792	powershell.exe
2792	powershell.exe
3388	mygame.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3388	mygame.exe
Token: SeDebugPrivilege	4348	powershell.exe
Token: SeIncreaseQuotaPrivilege	4348	powershell.exe
Token: SeSecurityPrivilege	4348	powershell.exe
Token: SeTakeOwnershipPrivilege	4348	powershell.exe
Token: SeLoadDriverPrivilege	4348	powershell.exe
Token: SeSystemProfilePrivilege	4348	powershell.exe
Token: SeSystemtimePrivilege	4348	powershell.exe
Token: SeProfSingleProcessPrivilege	4348	powershell.exe
Token: SeIncBasePriorityPrivilege	4348	powershell.exe
Token: SeCreatePagefilePrivilege	4348	powershell.exe
Token: SeBackupPrivilege	4348	powershell.exe
Token: SeRestorePrivilege	4348	powershell.exe
Token: SeShutdownPrivilege	4348	powershell.exe
Token: SeDebugPrivilege	4348	powershell.exe
Token: SeSystemEnvironmentPrivilege	4348	powershell.exe
Token: SeRemoteShutdownPrivilege	4348	powershell.exe
Token: SeUndockPrivilege	4348	powershell.exe
Token: SeManageVolumePrivilege	4348	powershell.exe
Token: 33	4348	powershell.exe
Token: 34	4348	powershell.exe
Token: 35	4348	powershell.exe
Token: 36	4348	powershell.exe
Token: SeDebugPrivilege	3660	powershell.exe
Token: SeIncreaseQuotaPrivilege	3660	powershell.exe
Token: SeSecurityPrivilege	3660	powershell.exe
Token: SeTakeOwnershipPrivilege	3660	powershell.exe
Token: SeLoadDriverPrivilege	3660	powershell.exe
Token: SeSystemProfilePrivilege	3660	powershell.exe
Token: SeSystemtimePrivilege	3660	powershell.exe
Token: SeProfSingleProcessPrivilege	3660	powershell.exe
Token: SeIncBasePriorityPrivilege	3660	powershell.exe
Token: SeCreatePagefilePrivilege	3660	powershell.exe
Token: SeBackupPrivilege	3660	powershell.exe
Token: SeRestorePrivilege	3660	powershell.exe
Token: SeShutdownPrivilege	3660	powershell.exe
Token: SeDebugPrivilege	3660	powershell.exe
Token: SeSystemEnvironmentPrivilege	3660	powershell.exe
Token: SeRemoteShutdownPrivilege	3660	powershell.exe
Token: SeUndockPrivilege	3660	powershell.exe
Token: SeManageVolumePrivilege	3660	powershell.exe
Token: 33	3660	powershell.exe
Token: 34	3660	powershell.exe
Token: 35	3660	powershell.exe
Token: 36	3660	powershell.exe
Token: SeDebugPrivilege	4592	powershell.exe
Token: SeIncreaseQuotaPrivilege	4592	powershell.exe
Token: SeSecurityPrivilege	4592	powershell.exe
Token: SeTakeOwnershipPrivilege	4592	powershell.exe
Token: SeLoadDriverPrivilege	4592	powershell.exe
Token: SeSystemProfilePrivilege	4592	powershell.exe
Token: SeSystemtimePrivilege	4592	powershell.exe
Token: SeProfSingleProcessPrivilege	4592	powershell.exe
Token: SeIncBasePriorityPrivilege	4592	powershell.exe
Token: SeCreatePagefilePrivilege	4592	powershell.exe
Token: SeBackupPrivilege	4592	powershell.exe
Token: SeRestorePrivilege	4592	powershell.exe
Token: SeShutdownPrivilege	4592	powershell.exe
Token: SeDebugPrivilege	4592	powershell.exe
Token: SeSystemEnvironmentPrivilege	4592	powershell.exe
Token: SeRemoteShutdownPrivilege	4592	powershell.exe
Token: SeUndockPrivilege	4592	powershell.exe
Token: SeManageVolumePrivilege	4592	powershell.exe
Token: 33	4592	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3388	mygame.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3388 wrote to memory of 4348	3388	mygame.exe	86
PID 3388 wrote to memory of 4348	3388	mygame.exe	86
PID 3388 wrote to memory of 3660	3388	mygame.exe	91
PID 3388 wrote to memory of 3660	3388	mygame.exe	91
PID 3388 wrote to memory of 4592	3388	mygame.exe	93
PID 3388 wrote to memory of 4592	3388	mygame.exe	93
PID 3388 wrote to memory of 2792	3388	mygame.exe	96
PID 3388 wrote to memory of 2792	3388	mygame.exe	96
PID 3388 wrote to memory of 216	3388	mygame.exe	98
PID 3388 wrote to memory of 216	3388	mygame.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\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:3388
- 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:4348
- 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:3660
- 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:4592
- 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:2792
- 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:216

C:\Users\Admin\AppData\Roaming\Update.exe
"C:\Users\Admin\AppData\Roaming\Update.exe"
1⤵
- Executes dropped EXE
PID:2740

C:\Users\Admin\AppData\Roaming\Update.exe
"C:\Users\Admin\AppData\Roaming\Update.exe"
1⤵
- Executes dropped EXE
PID:2876

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
f0f59cccd39a3694e0e6dfd44d0fa76d

SHA1
fccd7911d463041e1168431df8823e4c4ea387c1

SHA256
70466c7f3a911368d653396fdd68f993322c69e1797b492ca00f8be34b7f3401

SHA512
5c726e1e28cb9c0c3ab963fbfbf471c6033839f3e535a3811581fdaa4da17175e5a8a8be84a4fccd99b81e048058e51d230ff3836e3ec920057a1b1676110bee

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

Filesize
1KB

MD5
cadc92f21beb813207767d569e9e12bd

SHA1
d30a4d142565e597f3de47a577f8cdeb0e15e4b9

SHA256
c22a05078167b80b0874b4acecc6d03a4c0c031dcd2bc1a98ca56a89a8c00d12

SHA512
ef20d09be76a46dbd11a8da7397e79e784bfad2e7ca3f20d6f267f998ab529804f6e23e89d673ac6f69864155d89a13f3504f0bf656867d23370bf88fd3caf71

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

Filesize
1KB

MD5
47a8a775a4b759bf752c7a2d1ead773d

SHA1
b1ff1b1cda363fb7f7fbc9561dd540f332ce5874

SHA256
447e7652f4ce4893ba910a061fbe545ba5643a90031512839be390b68e0fda05

SHA512
86d598198fb85449bb50c177cb534eebc8b6c5ae90b4e84882ac21ee120608aa2048624c7c4e4ed468585a2e1bcae6c10300a78b49e9d64236e6626c9eba0d69

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nb4eofs0.z4t.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/3388-31-0x00007FFECE453000-0x00007FFECE455000-memory.dmp

Filesize
8KB

Download
memory/3388-1-0x00000000008B0000-0x00000000008D8000-memory.dmp

Filesize
160KB

Download
memory/3388-0-0x00007FFECE453000-0x00007FFECE455000-memory.dmp

Filesize
8KB

Download
memory/3388-60-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

Filesize
10.8MB

Download
memory/3388-59-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

Filesize
10.8MB

Download
memory/4348-12-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

Filesize
10.8MB

Download
memory/4348-19-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

Filesize
10.8MB

Download
memory/4348-16-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

Filesize
10.8MB

Download
memory/4348-15-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

Filesize
10.8MB

Download
memory/4348-14-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

Filesize
10.8MB

Download
memory/4348-13-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

Filesize
10.8MB

Download
memory/4348-2-0x00000107068B0000-0x00000107068D2000-memory.dmp

Filesize
136KB

Download