xworm | c6ee0fd2b511f01ced2be0cd78d5751886e2f1540d39981238ca3d48cd750bca

General

Target

OOKetNUn.exe
Size

69KB
MD5

5181770cbed31b900c8af62fd4239dd4
SHA1

a60ecfce32371fe5bf5ace4f6d85da2c2075738e
SHA256

6fcde9493755059859d02694b87be5a0c22e34402604c599a405cb81641a32c8
SHA512

62bf6dbf4e9bcc98978371b8d0d8fe0bf66c7ffa9fbb4a20d948bd85d30da98dbd7bfb496abe5882857232af83fa404bc8c6e0f1cacbe3fba11a7a734dbff292
SSDEEP

1536:SXEBFv+KnZS1fhCte+bQWRjg6ETKZOWbhQu4:ZnU15CQ+bQij+TKZOWbh74

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:2501

local-josh.gl.at.ply.gg:2501

Attributes

Install_directory
%AppData%
install_file
Expencive.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3592-1-0x0000000000730000-0x0000000000748000-memory.dmp	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
4332	powershell.exe
3996	powershell.exe
2648	powershell.exe
1976	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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	OOKetNUn.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Expencive.lnk	OOKetNUn.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Expencive.lnk	OOKetNUn.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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Expencive = "C:\\Users\\Admin\\AppData\\Roaming\\Expencive.exe"	OOKetNUn.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4332	powershell.exe
4332	powershell.exe
3996	powershell.exe
3996	powershell.exe
2648	powershell.exe
2648	powershell.exe
1976	powershell.exe
1976	powershell.exe
3592	OOKetNUn.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3592	OOKetNUn.exe
Token: SeDebugPrivilege	4332	powershell.exe
Token: SeDebugPrivilege	3996	powershell.exe
Token: SeDebugPrivilege	2648	powershell.exe
Token: SeDebugPrivilege	1976	powershell.exe
Token: SeDebugPrivilege	3592	OOKetNUn.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3592	OOKetNUn.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3592 wrote to memory of 4332	3592	OOKetNUn.exe	83
PID 3592 wrote to memory of 4332	3592	OOKetNUn.exe	83
PID 3592 wrote to memory of 3996	3592	OOKetNUn.exe	85
PID 3592 wrote to memory of 3996	3592	OOKetNUn.exe	85
PID 3592 wrote to memory of 2648	3592	OOKetNUn.exe	87
PID 3592 wrote to memory of 2648	3592	OOKetNUn.exe	87
PID 3592 wrote to memory of 1976	3592	OOKetNUn.exe	89
PID 3592 wrote to memory of 1976	3592	OOKetNUn.exe	89

C:\Users\Admin\AppData\Local\Temp\OOKetNUn.exe
"C:\Users\Admin\AppData\Local\Temp\OOKetNUn.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:3592
- 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\OOKetNUn.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4332
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'OOKetNUn.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3996
- 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\Expencive.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2648
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Expencive.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
65a68df1062af34622552c4f644a5708

SHA1
6f6ecf7b4b635abb0b132d95dac2759dc14b50af

SHA256
718dc2f5f4a6dbb7fab7f3db05bd7f602fb16526caae7084ab46c3ab4e7bad35

SHA512
4e460eb566032942547b58411222dd26ae300a95f83cf5ae6df58ebd28594341123611b348bd4031a33bc7f38307d5cb8fb677bba8c896919e3eee677a104d4d

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

Filesize
944B

MD5
dcbfd0980723f9fd907a65f4a29423dd

SHA1
327c0973d9c29f6fd9b4681f42cce6978fcc2036

SHA256
aa19273fbe3ad01f305c9bddb38e2c2fd3394a3fc7883d2571bcc3a8d0238f61

SHA512
cae8c1f298be8f424d367b00e08dcc31ad170bcfb57d36f94473966d25b73ae4364f719793ad5f3e66f64dc14671f3f197cc8968f5d018df294d6df9bb5e2d98

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mvwja2y2.1aj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3592-1-0x0000000000730000-0x0000000000748000-memory.dmp

Filesize
96KB

Download
memory/3592-0-0x00007FFB5E353000-0x00007FFB5E355000-memory.dmp

Filesize
8KB

Download
memory/3592-58-0x00007FFB5E350000-0x00007FFB5EE11000-memory.dmp

Filesize
10.8MB

Download
memory/3592-57-0x00007FFB5E350000-0x00007FFB5EE11000-memory.dmp

Filesize
10.8MB

Download
memory/3592-56-0x00007FFB5E353000-0x00007FFB5E355000-memory.dmp

Filesize
8KB

Download
memory/4332-11-0x000001DB35490000-0x000001DB354B2000-memory.dmp

Filesize
136KB

Download
memory/4332-17-0x00007FFB5E350000-0x00007FFB5EE11000-memory.dmp

Filesize
10.8MB

Download
memory/4332-14-0x00007FFB5E350000-0x00007FFB5EE11000-memory.dmp

Filesize
10.8MB

Download
memory/4332-13-0x00007FFB5E350000-0x00007FFB5EE11000-memory.dmp

Filesize
10.8MB

Download
memory/4332-12-0x00007FFB5E350000-0x00007FFB5EE11000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads