xworm | 132936f10f4245a94e6fc13084b5cbecf2c5462bd9217050dabfb65e17605869

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18/11/2024, 18:48

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General

Target

Windows Shell Experience Host.exe
Size

86KB
MD5

17f122079462e212871a1e2eb20eaff9
SHA1

349e4b54323acce835916a2bbe40dc9c5d30931f
SHA256

f483197df60b8767d23fa820efaab0c6bcc3a4b02ebee3c8f1290ef699f6697e
SHA512

95548cb30e9e45c4024be181253200d2188b622754158f6268fa09e41327dbb8468399a1b5ddd9d868413638bf1b9b18f6814586530f2c6a0a6cbd6311234e94
SSDEEP

768:NG9nICDiZGhCMhOB0s1SbiFG9Ox7h86BOMhUL02dC+IHZK:NgICDiZQRhVeFG9e7h86BOM+Nd6c

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

147.185.221.20:65300

Mutex

RMe1pa1UgjNcB2Un

Attributes

Install_directory
%AppData%
install_file
Windows Shell Experience Host.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral9/memory/2032-1-0x0000000000A00000-0x0000000000A1A000-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
2708	powershell.exe
2760	powershell.exe
3068	powershell.exe
2988	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\Windows Shell Experience Host.lnk	Windows Shell Experience Host.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Shell Experience Host.lnk	Windows Shell Experience Host.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Shell Experience Host = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Shell Experience Host.exe"	Windows Shell Experience Host.exe

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
4	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 5 IoCs

pid	Process
2988	powershell.exe
2708	powershell.exe
2760	powershell.exe
3068	powershell.exe
2032	Windows Shell Experience Host.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2032	Windows Shell Experience Host.exe
Token: SeDebugPrivilege	2988	powershell.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	2760	powershell.exe
Token: SeDebugPrivilege	3068	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2032	Windows Shell Experience Host.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 2988	2032	Windows Shell Experience Host.exe	31
PID 2032 wrote to memory of 2988	2032	Windows Shell Experience Host.exe	31
PID 2032 wrote to memory of 2988	2032	Windows Shell Experience Host.exe	31
PID 2032 wrote to memory of 2708	2032	Windows Shell Experience Host.exe	33
PID 2032 wrote to memory of 2708	2032	Windows Shell Experience Host.exe	33
PID 2032 wrote to memory of 2708	2032	Windows Shell Experience Host.exe	33
PID 2032 wrote to memory of 2760	2032	Windows Shell Experience Host.exe	35
PID 2032 wrote to memory of 2760	2032	Windows Shell Experience Host.exe	35
PID 2032 wrote to memory of 2760	2032	Windows Shell Experience Host.exe	35
PID 2032 wrote to memory of 3068	2032	Windows Shell Experience Host.exe	37
PID 2032 wrote to memory of 3068	2032	Windows Shell Experience Host.exe	37
PID 2032 wrote to memory of 3068	2032	Windows Shell Experience Host.exe	37

C:\Users\Admin\AppData\Local\Temp\Windows Shell Experience Host.exe
"C:\Users\Admin\AppData\Local\Temp\Windows Shell Experience Host.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:2032
- 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\Windows Shell Experience Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2988
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Shell Experience Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- 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\Windows Shell Experience Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Shell Experience Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3068

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\BBJ98O0VJPZP2ZGI6YOR.temp

Filesize
7KB

MD5
6d0ef08fb863a3ba1a85b53db2a6baab

SHA1
e94cb8ebfaa9fa4a964e9e86b193e4c59641fff5

SHA256
9555b7ece3afe725b7beeb03fe12b0a0214fa427305f148c867c7b8841efd725

SHA512
25bc722e324ec5de43bd2a3f971851b18d2d6db798c9973b5edece3ce6194ebf6d6ea058900b2a179f238322499e58250e45af2f89f05bf35da567c59afddb06

Download Submit
memory/2032-0-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/2032-1-0x0000000000A00000-0x0000000000A1A000-memory.dmp

Filesize
104KB

Download
memory/2032-2-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

Filesize
9.9MB

Download
memory/2032-27-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/2032-32-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

Filesize
9.9MB

Download
memory/2708-16-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download
memory/2708-15-0x000000001B750000-0x000000001BA32000-memory.dmp

Filesize
2.9MB

Download
memory/2988-7-0x00000000027A0000-0x0000000002820000-memory.dmp

Filesize
512KB

Download
memory/2988-8-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/2988-9-0x0000000002820000-0x0000000002828000-memory.dmp

Filesize
32KB

Download