xworm | 60b290310f67adb0ae186b4b938ca466a6b55653b2519261fa425127f5500a1f

max time kernel
149s
max time network
151s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
09-06-2024 17:07

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General

Target

RAT/XClient.exe
Size

172KB
MD5

75ba783757c5b61bd841afa136fc3eda
SHA1

8db9cda9508471a23f9b743027fa115e01bc1fe1
SHA256

75a8719e83e4aecbe51287d7bfaf1e334fa190c7784324f24bcf61ab984de20a
SHA512

9a6cfbf4302336662527837bf60b30b458f8d438bd6e9563093d4948bf81c79d56578e965d836e90aafde553d1cdc9c6df81a254aafcfb3379fbe6405dce0ea1
SSDEEP

1536:vJcr5kCyoAp30kaF6CiJzt7UbjFdZe8e6TOAJkU7JsOpysa7iAMI:BcmNNxda6zZUbjHZe8jO6H2OpYuAf

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
XClient.exe
pastebin_url
https://pastebin.com/raw/2jTT3Lnj

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral7/memory/5052-0-0x0000000000850000-0x0000000000880000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
3024	powershell.exe
1788	powershell.exe
4460	powershell.exe
2760	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient.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-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs

Web Service

T1102

flow	ioc
41	7.tcp.eu.ngrok.io
4	pastebin.com
5	pastebin.com
7	7.tcp.eu.ngrok.io
20	7.tcp.eu.ngrok.io

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

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
3024	powershell.exe
3024	powershell.exe
3024	powershell.exe
1788	powershell.exe
1788	powershell.exe
1788	powershell.exe
4460	powershell.exe
4460	powershell.exe
4460	powershell.exe
2760	powershell.exe
2760	powershell.exe
2760	powershell.exe
5052	XClient.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5052	XClient.exe
Token: SeDebugPrivilege	3024	powershell.exe
Token: SeIncreaseQuotaPrivilege	3024	powershell.exe
Token: SeSecurityPrivilege	3024	powershell.exe
Token: SeTakeOwnershipPrivilege	3024	powershell.exe
Token: SeLoadDriverPrivilege	3024	powershell.exe
Token: SeSystemProfilePrivilege	3024	powershell.exe
Token: SeSystemtimePrivilege	3024	powershell.exe
Token: SeProfSingleProcessPrivilege	3024	powershell.exe
Token: SeIncBasePriorityPrivilege	3024	powershell.exe
Token: SeCreatePagefilePrivilege	3024	powershell.exe
Token: SeBackupPrivilege	3024	powershell.exe
Token: SeRestorePrivilege	3024	powershell.exe
Token: SeShutdownPrivilege	3024	powershell.exe
Token: SeDebugPrivilege	3024	powershell.exe
Token: SeSystemEnvironmentPrivilege	3024	powershell.exe
Token: SeRemoteShutdownPrivilege	3024	powershell.exe
Token: SeUndockPrivilege	3024	powershell.exe
Token: SeManageVolumePrivilege	3024	powershell.exe
Token: 33	3024	powershell.exe
Token: 34	3024	powershell.exe
Token: 35	3024	powershell.exe
Token: 36	3024	powershell.exe
Token: SeDebugPrivilege	1788	powershell.exe
Token: SeIncreaseQuotaPrivilege	1788	powershell.exe
Token: SeSecurityPrivilege	1788	powershell.exe
Token: SeTakeOwnershipPrivilege	1788	powershell.exe
Token: SeLoadDriverPrivilege	1788	powershell.exe
Token: SeSystemProfilePrivilege	1788	powershell.exe
Token: SeSystemtimePrivilege	1788	powershell.exe
Token: SeProfSingleProcessPrivilege	1788	powershell.exe
Token: SeIncBasePriorityPrivilege	1788	powershell.exe
Token: SeCreatePagefilePrivilege	1788	powershell.exe
Token: SeBackupPrivilege	1788	powershell.exe
Token: SeRestorePrivilege	1788	powershell.exe
Token: SeShutdownPrivilege	1788	powershell.exe
Token: SeDebugPrivilege	1788	powershell.exe
Token: SeSystemEnvironmentPrivilege	1788	powershell.exe
Token: SeRemoteShutdownPrivilege	1788	powershell.exe
Token: SeUndockPrivilege	1788	powershell.exe
Token: SeManageVolumePrivilege	1788	powershell.exe
Token: 33	1788	powershell.exe
Token: 34	1788	powershell.exe
Token: 35	1788	powershell.exe
Token: 36	1788	powershell.exe
Token: SeDebugPrivilege	4460	powershell.exe
Token: SeIncreaseQuotaPrivilege	4460	powershell.exe
Token: SeSecurityPrivilege	4460	powershell.exe
Token: SeTakeOwnershipPrivilege	4460	powershell.exe
Token: SeLoadDriverPrivilege	4460	powershell.exe
Token: SeSystemProfilePrivilege	4460	powershell.exe
Token: SeSystemtimePrivilege	4460	powershell.exe
Token: SeProfSingleProcessPrivilege	4460	powershell.exe
Token: SeIncBasePriorityPrivilege	4460	powershell.exe
Token: SeCreatePagefilePrivilege	4460	powershell.exe
Token: SeBackupPrivilege	4460	powershell.exe
Token: SeRestorePrivilege	4460	powershell.exe
Token: SeShutdownPrivilege	4460	powershell.exe
Token: SeDebugPrivilege	4460	powershell.exe
Token: SeSystemEnvironmentPrivilege	4460	powershell.exe
Token: SeRemoteShutdownPrivilege	4460	powershell.exe
Token: SeUndockPrivilege	4460	powershell.exe
Token: SeManageVolumePrivilege	4460	powershell.exe
Token: 33	4460	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5052	XClient.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 3024	5052	XClient.exe	73
PID 5052 wrote to memory of 3024	5052	XClient.exe	73
PID 5052 wrote to memory of 1788	5052	XClient.exe	76
PID 5052 wrote to memory of 1788	5052	XClient.exe	76
PID 5052 wrote to memory of 4460	5052	XClient.exe	78
PID 5052 wrote to memory of 4460	5052	XClient.exe	78
PID 5052 wrote to memory of 2760	5052	XClient.exe	80
PID 5052 wrote to memory of 2760	5052	XClient.exe	80

C:\Users\Admin\AppData\Local\Temp\RAT\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\RAT\XClient.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:5052
- 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\RAT\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3024
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1788
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4460
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

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

Filesize
3KB

MD5
ad5cd538ca58cb28ede39c108acb5785

SHA1
1ae910026f3dbe90ed025e9e96ead2b5399be877

SHA256
c9e6cb04d6c893458d5a7e12eb575cf97c3172f5e312b1f63a667cbbc5f0c033

SHA512
c066c5d9b276a68fa636647bb29aea05bfa2292217bc77f5324d9c1d93117772ee8277e1f7cff91ec8d6b7c05ca078f929cecfdbb09582522a9067f54740af13

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

Filesize
1KB

MD5
c479b836b1f6e175a2b3ebb2493023be

SHA1
d89063add83b7ed1067b76048ca77073400c3734

SHA256
cf78729fbf60f9c2a9448af33022422eb241149f822a8e9b482a2daf48b23aa3

SHA512
f2d8bc2804eecc2f73b6b3dcefbfc1ba349068650f4eba758013e71fa4f38070989368c1a1132ba344ed1ee9767f4dd69d59c498ef019166fa82d8b67d935d51

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

Filesize
1KB

MD5
d26e61b05e1a82bc1ed5078b6f020fbb

SHA1
5a7b374a664e5975e3aacab00e30fb499bbc5dd8

SHA256
7788aceab7325c7eaeb0c7c6ef1def257f8ffe731874f9b9d3247590528b6011

SHA512
75bfdbfc5e79404951e82448f68cb14b70091ba5abf4119029c826b403ca30d0612d3ab8cdb8190f1c8269ccd5cea27e17736b123990c96557d1cbb61f1a5f1c

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

Filesize
1KB

MD5
9d3067fc9b8c5bd2c447abcb65069144

SHA1
ad5f4e09c9956c522db94a05453e997527cbb9ba

SHA256
4c76cad7e8040f33abe807e1c5072bcb1f187bdfa997b9b73737ceafaeb97d36

SHA512
59463fb53f2f626863b4c003a2a820201ff13c13aa4353397a43c36aceebe2e0d615171ecc6f4e9ad9d9e027675bfe06aca8429abdf1fb2efc19c1279877e620

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_q24u0x33.key.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/3024-8-0x00007FFA94980000-0x00007FFA9536C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-11-0x0000024C62810000-0x0000024C62886000-memory.dmp

Filesize
472KB

Download
memory/3024-12-0x00007FFA94980000-0x00007FFA9536C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-23-0x00007FFA94980000-0x00007FFA9536C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-51-0x00007FFA94980000-0x00007FFA9536C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-7-0x0000024C62540000-0x0000024C62562000-memory.dmp

Filesize
136KB

Download
memory/5052-1-0x00007FFA94983000-0x00007FFA94984000-memory.dmp

Filesize
4KB

Download
memory/5052-2-0x00007FFA94980000-0x00007FFA9536C000-memory.dmp

Filesize
9.9MB

Download
memory/5052-0-0x0000000000850000-0x0000000000880000-memory.dmp

Filesize
192KB

Download
memory/5052-184-0x00007FFA94983000-0x00007FFA94984000-memory.dmp

Filesize
4KB

Download
memory/5052-185-0x00007FFA94980000-0x00007FFA9536C000-memory.dmp

Filesize
9.9MB

Download