xworm | 0e4aa3896358b32016c903f837a762052757ebeeb525b4077062864710de329a

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31/10/2024, 14:27

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General

Target

Request for Quotation.pdf.exe
Size

1.6MB
MD5

e431cc534657e37b3e84065eba53105e
SHA1

fc88bf55a27ca270c2c2dc721c64da6966a0a5c1
SHA256

0e4aa3896358b32016c903f837a762052757ebeeb525b4077062864710de329a
SHA512

4894c6dc19987f1b2e902cfa7314de8c179c85135fcd48ee103def925316e9f15fe65bd990c9c61d61a70672b7c1cff30c6c1ff751654f63327b9a2ce1016c03
SSDEEP

12288:C27f6PD2zYzh+FoVIx+AEA4KLvSt6xjplsi:Vf8xzwFdx+Y4kvF5si

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

kanrplest.duckdns.org:4068

Mutex

TdUxMCK2FUdy51AH

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2760-4-0x0000000000400000-0x0000000000410000-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 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1796	powershell.exe
968	powershell.exe
4560	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CasPol.lnk	CasPol.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CasPol.lnk	CasPol.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CasPol = "C:\\Users\\Admin\\AppData\\Roaming\\CasPol.exe"	CasPol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1780 set thread context of 2760	1780	Request for Quotation.pdf.exe	91

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CasPol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1796	powershell.exe
1796	powershell.exe
968	powershell.exe
968	powershell.exe
968	powershell.exe
4560	powershell.exe
4560	powershell.exe
4560	powershell.exe
2760	CasPol.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1780	Request for Quotation.pdf.exe
Token: SeDebugPrivilege	2760	CasPol.exe
Token: SeDebugPrivilege	1796	powershell.exe
Token: SeDebugPrivilege	968	powershell.exe
Token: SeDebugPrivilege	4560	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2760	CasPol.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1780 wrote to memory of 2704	1780	Request for Quotation.pdf.exe	90
PID 1780 wrote to memory of 2704	1780	Request for Quotation.pdf.exe	90
PID 1780 wrote to memory of 2704	1780	Request for Quotation.pdf.exe	90
PID 1780 wrote to memory of 2760	1780	Request for Quotation.pdf.exe	91
PID 1780 wrote to memory of 2760	1780	Request for Quotation.pdf.exe	91
PID 1780 wrote to memory of 2760	1780	Request for Quotation.pdf.exe	91
PID 1780 wrote to memory of 2760	1780	Request for Quotation.pdf.exe	91
PID 1780 wrote to memory of 2760	1780	Request for Quotation.pdf.exe	91
PID 1780 wrote to memory of 2760	1780	Request for Quotation.pdf.exe	91
PID 1780 wrote to memory of 2760	1780	Request for Quotation.pdf.exe	91
PID 1780 wrote to memory of 2760	1780	Request for Quotation.pdf.exe	91
PID 1780 wrote to memory of 2512	1780	Request for Quotation.pdf.exe	92
PID 1780 wrote to memory of 2512	1780	Request for Quotation.pdf.exe	92
PID 1780 wrote to memory of 2512	1780	Request for Quotation.pdf.exe	92
PID 2760 wrote to memory of 1796	2760	CasPol.exe	100
PID 2760 wrote to memory of 1796	2760	CasPol.exe	100
PID 2760 wrote to memory of 1796	2760	CasPol.exe	100
PID 2760 wrote to memory of 968	2760	CasPol.exe	105
PID 2760 wrote to memory of 968	2760	CasPol.exe	105
PID 2760 wrote to memory of 968	2760	CasPol.exe	105
PID 2760 wrote to memory of 4560	2760	CasPol.exe	107
PID 2760 wrote to memory of 4560	2760	CasPol.exe	107
PID 2760 wrote to memory of 4560	2760	CasPol.exe	107

C:\Users\Admin\AppData\Local\Temp\Request for Quotation.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Request for Quotation.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1780
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
  2⤵
  PID:2704
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1796
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'CasPol.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:968
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\CasPol.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4560
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
  2⤵
  PID:2512

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 Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
072fb36bcc94aa61f82896bbea6fe371

SHA1
61e6fcb719221691ad0eec09646a1a1d5bb525a5

SHA256
92642a15c3b85471d4843f29e88a8c63a5c698a88401dfe78f2f19e1225b26e7

SHA512
104965bc3a45f5745cba51e3efe52770a624535e495a611898ec05e4f7467846dccf45dd3ffa91d42f5a7cf5c76815e9c5099531fb372b077c3d3c38667eb233

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

Filesize
18KB

MD5
793dbc5c96451a5d7d670682faa99177

SHA1
af7220c88338d602f064091b6c5bb06e1051b83e

SHA256
1fc36e2606590fc2870d3606d6ab6948b03bb989ad2238158de226ccbaa31378

SHA512
c2de429cd2efe7d879fd1d6967d0afa89179670ad2d376201116b4ad6a927bdf4ee3decbd73b95fa923270a1524e2e4b4e8a7f5a0f2488af75d6a2a12be950d3

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_emsmff1b.4fb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/968-63-0x0000000070020000-0x000000007006C000-memory.dmp

Filesize
304KB

Download
memory/1780-0-0x00007FF8FCAA3000-0x00007FF8FCAA5000-memory.dmp

Filesize
8KB

Download
memory/1780-1-0x000002F2B0230000-0x000002F2B0242000-memory.dmp

Filesize
72KB

Download
memory/1780-2-0x000002F2CA5C0000-0x000002F2CA622000-memory.dmp

Filesize
392KB

Download
memory/1780-3-0x00007FF8FCAA0000-0x00007FF8FD561000-memory.dmp

Filesize
10.8MB

Download
memory/1780-7-0x00007FF8FCAA0000-0x00007FF8FD561000-memory.dmp

Filesize
10.8MB

Download
memory/1796-11-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1796-44-0x0000000007AE0000-0x0000000007AF1000-memory.dmp

Filesize
68KB

Download
memory/1796-12-0x0000000005E30000-0x0000000005E52000-memory.dmp

Filesize
136KB

Download
memory/1796-13-0x0000000005F00000-0x0000000005F66000-memory.dmp

Filesize
408KB

Download
memory/1796-14-0x0000000005F70000-0x0000000005FD6000-memory.dmp

Filesize
408KB

Download
memory/1796-15-0x0000000005FE0000-0x0000000006334000-memory.dmp

Filesize
3.3MB

Download
memory/1796-10-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1796-25-0x00000000065C0000-0x00000000065DE000-memory.dmp

Filesize
120KB

Download
memory/1796-26-0x00000000065F0000-0x000000000663C000-memory.dmp

Filesize
304KB

Download
memory/1796-27-0x0000000006B80000-0x0000000006BB2000-memory.dmp

Filesize
200KB

Download
memory/1796-28-0x0000000070020000-0x000000007006C000-memory.dmp

Filesize
304KB

Download
memory/1796-38-0x0000000006B60000-0x0000000006B7E000-memory.dmp

Filesize
120KB

Download
memory/1796-39-0x0000000007790000-0x0000000007833000-memory.dmp

Filesize
652KB

Download
memory/1796-40-0x0000000007F30000-0x00000000085AA000-memory.dmp

Filesize
6.5MB

Download
memory/1796-41-0x00000000078E0000-0x00000000078FA000-memory.dmp

Filesize
104KB

Download
memory/1796-42-0x0000000007950000-0x000000000795A000-memory.dmp

Filesize
40KB

Download
memory/1796-43-0x0000000007B60000-0x0000000007BF6000-memory.dmp

Filesize
600KB

Download
memory/1796-9-0x0000000005680000-0x0000000005CA8000-memory.dmp

Filesize
6.2MB

Download
memory/1796-45-0x0000000007B10000-0x0000000007B1E000-memory.dmp

Filesize
56KB

Download
memory/1796-46-0x0000000007B20000-0x0000000007B34000-memory.dmp

Filesize
80KB

Download
memory/1796-47-0x0000000007C20000-0x0000000007C3A000-memory.dmp

Filesize
104KB

Download
memory/1796-48-0x0000000007C00000-0x0000000007C08000-memory.dmp

Filesize
32KB

Download
memory/1796-51-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1796-8-0x0000000005010000-0x0000000005046000-memory.dmp

Filesize
216KB

Download
memory/2760-6-0x0000000004E90000-0x0000000004F2C000-memory.dmp

Filesize
624KB

Download
memory/2760-5-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/2760-73-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/2760-4-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2760-102-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2760-103-0x0000000005E30000-0x00000000063D4000-memory.dmp

Filesize
5.6MB

Download
memory/2760-104-0x0000000005BD0000-0x0000000005C62000-memory.dmp

Filesize
584KB

Download
memory/2760-105-0x0000000005BB0000-0x0000000005BBA000-memory.dmp

Filesize
40KB

Download
memory/2760-106-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/4560-85-0x0000000070020000-0x000000007006C000-memory.dmp

Filesize
304KB

Download