xworm | 4e986640769f16346bc1b6d9f5d033f4452c659b1275fc70bc736f1b2079828a

Analysis

max time kernel
146s
max time network
143s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
06-11-2024 20:22

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General

Target

XCliet.exe
Size

68KB
MD5

0815ae69147a697b5bae3d8d15cb7c75
SHA1

99a3b145ca36742aa0cbe0ef33829426f1dcf4ef
SHA256

4e986640769f16346bc1b6d9f5d033f4452c659b1275fc70bc736f1b2079828a
SHA512

992b165f6816f4711b3b0a6b7a8f83e4f58838abea7714df4bc8c30f7d9ed401d9b8f63296e3d13ca2d81894f754511628b042c5028feca4f54ca2b6bf70f0aa
SSDEEP

1536:RR1SVHku2BbeHCKNNJu+b4+QA6e2OcJv5SuUA:oReSTNu+b4e2Oa7R

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

pst-evidence.gl.at.ply.gg:8848

Attributes

Install_directory
%LocalAppData%
install_file
System32.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/3852-1-0x0000000000020000-0x0000000000038000-memory.dmp	family_xworm
behavioral1/files/0x002f000000045043-65.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
116	powershell.exe
1684	powershell.exe
4756	powershell.exe
1660	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-1-5-21-1669812756-2240353048-2660728061-1000\Control Panel\International\Geo\Nation	XCliet.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.lnk	XCliet.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.lnk	XCliet.exe

Executes dropped EXE 3 IoCs

pid	Process
1600	System32.exe
2092	System32.exe
1160	System32.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-1-5-21-1669812756-2240353048-2660728061-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System32 = "C:\\Users\\Admin\\AppData\\Local\\System32.exe"	XCliet.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
2488	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
116	powershell.exe
116	powershell.exe
1684	powershell.exe
1684	powershell.exe
4756	powershell.exe
4756	powershell.exe
1660	powershell.exe
1660	powershell.exe
3852	XCliet.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3852	XCliet.exe
Token: SeDebugPrivilege	116	powershell.exe
Token: SeIncreaseQuotaPrivilege	116	powershell.exe
Token: SeSecurityPrivilege	116	powershell.exe
Token: SeTakeOwnershipPrivilege	116	powershell.exe
Token: SeLoadDriverPrivilege	116	powershell.exe
Token: SeSystemProfilePrivilege	116	powershell.exe
Token: SeSystemtimePrivilege	116	powershell.exe
Token: SeProfSingleProcessPrivilege	116	powershell.exe
Token: SeIncBasePriorityPrivilege	116	powershell.exe
Token: SeCreatePagefilePrivilege	116	powershell.exe
Token: SeBackupPrivilege	116	powershell.exe
Token: SeRestorePrivilege	116	powershell.exe
Token: SeShutdownPrivilege	116	powershell.exe
Token: SeDebugPrivilege	116	powershell.exe
Token: SeSystemEnvironmentPrivilege	116	powershell.exe
Token: SeRemoteShutdownPrivilege	116	powershell.exe
Token: SeUndockPrivilege	116	powershell.exe
Token: SeManageVolumePrivilege	116	powershell.exe
Token: 33	116	powershell.exe
Token: 34	116	powershell.exe
Token: 35	116	powershell.exe
Token: 36	116	powershell.exe
Token: SeDebugPrivilege	1684	powershell.exe
Token: SeIncreaseQuotaPrivilege	1684	powershell.exe
Token: SeSecurityPrivilege	1684	powershell.exe
Token: SeTakeOwnershipPrivilege	1684	powershell.exe
Token: SeLoadDriverPrivilege	1684	powershell.exe
Token: SeSystemProfilePrivilege	1684	powershell.exe
Token: SeSystemtimePrivilege	1684	powershell.exe
Token: SeProfSingleProcessPrivilege	1684	powershell.exe
Token: SeIncBasePriorityPrivilege	1684	powershell.exe
Token: SeCreatePagefilePrivilege	1684	powershell.exe
Token: SeBackupPrivilege	1684	powershell.exe
Token: SeRestorePrivilege	1684	powershell.exe
Token: SeShutdownPrivilege	1684	powershell.exe
Token: SeDebugPrivilege	1684	powershell.exe
Token: SeSystemEnvironmentPrivilege	1684	powershell.exe
Token: SeRemoteShutdownPrivilege	1684	powershell.exe
Token: SeUndockPrivilege	1684	powershell.exe
Token: SeManageVolumePrivilege	1684	powershell.exe
Token: 33	1684	powershell.exe
Token: 34	1684	powershell.exe
Token: 35	1684	powershell.exe
Token: 36	1684	powershell.exe
Token: SeDebugPrivilege	4756	powershell.exe
Token: SeIncreaseQuotaPrivilege	4756	powershell.exe
Token: SeSecurityPrivilege	4756	powershell.exe
Token: SeTakeOwnershipPrivilege	4756	powershell.exe
Token: SeLoadDriverPrivilege	4756	powershell.exe
Token: SeSystemProfilePrivilege	4756	powershell.exe
Token: SeSystemtimePrivilege	4756	powershell.exe
Token: SeProfSingleProcessPrivilege	4756	powershell.exe
Token: SeIncBasePriorityPrivilege	4756	powershell.exe
Token: SeCreatePagefilePrivilege	4756	powershell.exe
Token: SeBackupPrivilege	4756	powershell.exe
Token: SeRestorePrivilege	4756	powershell.exe
Token: SeShutdownPrivilege	4756	powershell.exe
Token: SeDebugPrivilege	4756	powershell.exe
Token: SeSystemEnvironmentPrivilege	4756	powershell.exe
Token: SeRemoteShutdownPrivilege	4756	powershell.exe
Token: SeUndockPrivilege	4756	powershell.exe
Token: SeManageVolumePrivilege	4756	powershell.exe
Token: 33	4756	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3852	XCliet.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 116	3852	XCliet.exe	87
PID 3852 wrote to memory of 116	3852	XCliet.exe	87
PID 3852 wrote to memory of 1684	3852	XCliet.exe	93
PID 3852 wrote to memory of 1684	3852	XCliet.exe	93
PID 3852 wrote to memory of 4756	3852	XCliet.exe	95
PID 3852 wrote to memory of 4756	3852	XCliet.exe	95
PID 3852 wrote to memory of 1660	3852	XCliet.exe	97
PID 3852 wrote to memory of 1660	3852	XCliet.exe	97
PID 3852 wrote to memory of 2488	3852	XCliet.exe	101
PID 3852 wrote to memory of 2488	3852	XCliet.exe	101

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\XCliet.exe
"C:\Users\Admin\AppData\Local\Temp\XCliet.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:3852
- 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\XCliet.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:116
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XCliet.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1684
- 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\System32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1660
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System32" /tr "C:\Users\Admin\AppData\Local\System32.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2488

C:\Users\Admin\AppData\Local\System32.exe
"C:\Users\Admin\AppData\Local\System32.exe"
1⤵
- Executes dropped EXE
PID:1600

C:\Users\Admin\AppData\Local\System32.exe
"C:\Users\Admin\AppData\Local\System32.exe"
1⤵
- Executes dropped EXE
PID:2092

C:\Users\Admin\AppData\Local\System32.exe
"C:\Users\Admin\AppData\Local\System32.exe"
1⤵
- Executes dropped EXE
PID:1160

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\System32.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
c67441dfa09f61bca500bb43407c56b8

SHA1
5a56cf7cbeb48c109e2128c31b681fac3959157b

SHA256
63082da456c124d0bc516d2161d1613db5f3008d903e4066d2c7b4e90b435f33

SHA512
325de8b718b3a01df05e20e028c5882240e5fd2e96c771361b776312923ff178f27494a1f5249bf6d7365a99155eb8735a51366e85597008e6a10462e63ee0e8

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

Filesize
1KB

MD5
535515ab6327afb6afc16fdfb1e28c4f

SHA1
7b45d1b6c09d9dfeb6c74ee614641c09cdda3a32

SHA256
823a555cbce774ad089d4f41fd3b80b00331ec00a0ee8b0f03a68187e36001d5

SHA512
2533f7fd40674aa6844c7c4d2b0ab12142c081c2b7be9b8f866c30a90b708023883ada1fc540d2fa6211000ee16fedbd3ed0dc9c8c9ed6965b4d96ea132abc15

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

Filesize
1KB

MD5
aaba542482b6a93ee0261cb53b75ff52

SHA1
b411bfcb454276c6c719072160fba3c591a4082a

SHA256
79b642bb5e891e139113a05c3e4da77264cbaa0a3c46abd8766213cd0edb2192

SHA512
28916cf67f8e3c3a034eb51de4404e8657c8595b5e7d053e2063b30e065075f83ab68fa14aef4d6e87fcd81373ec18514b420b23266fede4fe83db3c684236c8

Download Submit
C:\Users\Admin\AppData\Local\System32.exe

Filesize
68KB

MD5
0815ae69147a697b5bae3d8d15cb7c75

SHA1
99a3b145ca36742aa0cbe0ef33829426f1dcf4ef

SHA256
4e986640769f16346bc1b6d9f5d033f4452c659b1275fc70bc736f1b2079828a

SHA512
992b165f6816f4711b3b0a6b7a8f83e4f58838abea7714df4bc8c30f7d9ed401d9b8f63296e3d13ca2d81894f754511628b042c5028feca4f54ca2b6bf70f0aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3giq1bne.xe3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/116-20-0x00007FF8ECA30000-0x00007FF8ED4F2000-memory.dmp

Filesize
10.8MB

Download
memory/116-13-0x00007FF8ECA30000-0x00007FF8ED4F2000-memory.dmp

Filesize
10.8MB

Download
memory/116-19-0x00000237B48C0000-0x00000237B4ADD000-memory.dmp

Filesize
2.1MB

Download
memory/116-2-0x00000237B4860000-0x00000237B4882000-memory.dmp

Filesize
136KB

Download
memory/116-15-0x00007FF8ECA30000-0x00007FF8ED4F2000-memory.dmp

Filesize
10.8MB

Download
memory/116-14-0x00007FF8ECA30000-0x00007FF8ED4F2000-memory.dmp

Filesize
10.8MB

Download
memory/116-12-0x00007FF8ECA30000-0x00007FF8ED4F2000-memory.dmp

Filesize
10.8MB

Download
memory/116-16-0x00007FF8ECA30000-0x00007FF8ED4F2000-memory.dmp

Filesize
10.8MB

Download
memory/1660-58-0x00000134244A0000-0x00000134246BD000-memory.dmp

Filesize
2.1MB

Download
memory/1684-33-0x00000214A7390000-0x00000214A75AD000-memory.dmp

Filesize
2.1MB

Download
memory/3852-56-0x00007FF8ECA33000-0x00007FF8ECA35000-memory.dmp

Filesize
8KB

Download
memory/3852-63-0x00007FF8ECA30000-0x00007FF8ED4F2000-memory.dmp

Filesize
10.8MB

Download
memory/3852-64-0x00007FF8ECA30000-0x00007FF8ED4F2000-memory.dmp

Filesize
10.8MB

Download
memory/3852-0-0x00007FF8ECA33000-0x00007FF8ECA35000-memory.dmp

Filesize
8KB

Download
memory/3852-1-0x0000000000020000-0x0000000000038000-memory.dmp

Filesize
96KB

Download
memory/4756-45-0x000001BEFEAA0000-0x000001BEFECBD000-memory.dmp

Filesize
2.1MB

Download