xworm | 132936f10f4245a94e6fc13084b5cbecf2c5462bd9217050dabfb65e17605869

Analysis

max time kernel
149s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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
behavioral14/memory/628-1-0x0000000000E00000-0x0000000000E1A000-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
884	powershell.exe
3612	powershell.exe
3716	powershell.exe
3448	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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	Windows Shell Experience Host.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Shell Experience Host.lnk	Windows Shell Experience Host.exe
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

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-1-5-21-2437139445-1151884604-3026847218-1000\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
13	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 9 IoCs

pid	Process
3612	powershell.exe
3612	powershell.exe
3716	powershell.exe
3716	powershell.exe
3448	powershell.exe
3448	powershell.exe
884	powershell.exe
884	powershell.exe
628	Windows Shell Experience Host.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	628	Windows Shell Experience Host.exe
Token: SeDebugPrivilege	3612	powershell.exe
Token: SeDebugPrivilege	3716	powershell.exe
Token: SeDebugPrivilege	3448	powershell.exe
Token: SeDebugPrivilege	884	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
628	Windows Shell Experience Host.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 3612	628	Windows Shell Experience Host.exe	90
PID 628 wrote to memory of 3612	628	Windows Shell Experience Host.exe	90
PID 628 wrote to memory of 3716	628	Windows Shell Experience Host.exe	94
PID 628 wrote to memory of 3716	628	Windows Shell Experience Host.exe	94
PID 628 wrote to memory of 3448	628	Windows Shell Experience Host.exe	97
PID 628 wrote to memory of 3448	628	Windows Shell Experience Host.exe	97
PID 628 wrote to memory of 884	628	Windows Shell Experience Host.exe	100
PID 628 wrote to memory of 884	628	Windows Shell Experience Host.exe	100

C:\Users\Admin\AppData\Local\Temp\Windows Shell Experience Host.exe
"C:\Users\Admin\AppData\Local\Temp\Windows Shell Experience Host.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:628
- 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:3612
- 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:3716
- 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:3448
- 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:884

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

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\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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
10890cda4b6eab618e926c4118ab0647

SHA1
1e1d63b73a0e6c7575f458b3c7917a9ce5ba776d

SHA256
00f8a035324d39bd62e6dee5e1b480069015471c487ebee4479e6990ea9ddb14

SHA512
a2ee84006c24a36f25e0bca0772430d64e3791f233da916aecdeae6712763e77d55bbbd00dc8f6b2b3887f3c26ab3980b96c5f46cc823e81e28abbbc5fc78221

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

Filesize
944B

MD5
e58749a7a1826f6ea62df1e2ef63a32b

SHA1
c0bca21658b8be4f37b71eec9578bfefa44f862d

SHA256
0e1f0e684adb40a5d0668df5fed007c9046137d7ae16a1f2f343b139d5f9bc93

SHA512
4cf45b2b11ab31e7f67fff286b29d50ed28cd6043091144c5c0f1348b5f5916ed7479cf985595e6f096b586ab93b4b5dce612f688049b8366a2dd91863e98b70

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lek4bsi2.01m.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/628-1-0x0000000000E00000-0x0000000000E1A000-memory.dmp

Filesize
104KB

Download
memory/628-2-0x00007FF8BCD30000-0x00007FF8BD7F1000-memory.dmp

Filesize
10.8MB

Download
memory/628-58-0x00007FF8BCD30000-0x00007FF8BD7F1000-memory.dmp

Filesize
10.8MB

Download
memory/628-0-0x00007FF8BCD33000-0x00007FF8BCD35000-memory.dmp

Filesize
8KB

Download
memory/3612-14-0x00007FF8BCD30000-0x00007FF8BD7F1000-memory.dmp

Filesize
10.8MB

Download
memory/3612-19-0x00007FF8BCD30000-0x00007FF8BD7F1000-memory.dmp

Filesize
10.8MB

Download
memory/3612-18-0x0000013FE7390000-0x0000013FE75AC000-memory.dmp

Filesize
2.1MB

Download
memory/3612-15-0x00007FF8BCD30000-0x00007FF8BD7F1000-memory.dmp

Filesize
10.8MB

Download
memory/3612-13-0x0000013FE7290000-0x0000013FE72B2000-memory.dmp

Filesize
136KB

Download
memory/3612-5-0x00007FF8BCD30000-0x00007FF8BD7F1000-memory.dmp

Filesize
10.8MB

Download