xworm | ebba736dfa26b559658df13cda55e2aef8cf744c05f817396ef1d3b17870a83e

Analysis

max time kernel
126s
max time network
137s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 18:28

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General

Target

Builder WorldWind Pro‌‌.exe
Size

386KB
MD5

142b02b4b22c03523db3522ce6fd6b10
SHA1

836cd20f44621aeca77d7ec4253d1aa92695a40a
SHA256

aac53980d79ea8fd1358d7b6b29a0693e71bf8ad936b91d06e953e6855aab1e6
SHA512

849dae7774ebd950482c6a2c10000411932221ddbe4f72f266a3fd9c457894ca185214841e9de91680eb5781831ff7fcb018e9810ff81b3f616f0c45fc5eee23
SSDEEP

6144:1HuW1RSlFXGcf2PqLtrLG3LN8MoJJEvHaY+42R6pLTcDaWfCG1kDuf:1OWzSlFD+ItrkhoD2aKpLlWfCGqi

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

dsasinject-58214.portmap.io:3389

Attributes

Install_directory
%AppData%
install_file
svchost.exe
telegram
https://api.telegram.org/bot7023899363:AAFEzgbfWzhyE32Lf95TKSRYEYXMd4AfMyk/sendMessage?chat_id=6354844663

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00050000000186f4-13.dat	family_xworm
behavioral1/memory/2548-18-0x0000000000A70000-0x0000000000A8A000-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 8 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2996	powershell.exe
2940	powershell.exe
2920	powershell.exe
2696	powershell.exe
2448	powershell.exe
2692	powershell.exe
1504	powershell.exe
3012	powershell.exe

Drops startup file 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\csrss.lnk	csrss.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\csrss.lnk	csrss.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	svchost.exe

Executes dropped EXE 3 IoCs

pid	Process
356	Builder WorldWind Pro.exe
2548	svchost.exe
1636	csrss.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 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	Builder WorldWind Pro.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1636	csrss.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2940	powershell.exe
2920	powershell.exe
2696	powershell.exe
2448	powershell.exe
2692	powershell.exe
1504	powershell.exe
3012	powershell.exe
2996	powershell.exe
2548	svchost.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	2548	svchost.exe
Token: SeDebugPrivilege	1636	csrss.exe
Token: SeDebugPrivilege	2940	powershell.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	2696	powershell.exe
Token: SeDebugPrivilege	2448	powershell.exe
Token: SeDebugPrivilege	2692	powershell.exe
Token: SeDebugPrivilege	1504	powershell.exe
Token: SeDebugPrivilege	3012	powershell.exe
Token: SeDebugPrivilege	2996	powershell.exe
Token: SeBackupPrivilege	1744	vssvc.exe
Token: SeRestorePrivilege	1744	vssvc.exe
Token: SeAuditPrivilege	1744	vssvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2548	svchost.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 356	2036	Builder WorldWind Pro‌‌.exe	31
PID 2036 wrote to memory of 356	2036	Builder WorldWind Pro‌‌.exe	31
PID 2036 wrote to memory of 356	2036	Builder WorldWind Pro‌‌.exe	31
PID 2036 wrote to memory of 356	2036	Builder WorldWind Pro‌‌.exe	31
PID 2036 wrote to memory of 2548	2036	Builder WorldWind Pro‌‌.exe	32
PID 2036 wrote to memory of 2548	2036	Builder WorldWind Pro‌‌.exe	32
PID 2036 wrote to memory of 2548	2036	Builder WorldWind Pro‌‌.exe	32
PID 2036 wrote to memory of 1636	2036	Builder WorldWind Pro‌‌.exe	33
PID 2036 wrote to memory of 1636	2036	Builder WorldWind Pro‌‌.exe	33
PID 2036 wrote to memory of 1636	2036	Builder WorldWind Pro‌‌.exe	33
PID 2548 wrote to memory of 2940	2548	svchost.exe	34
PID 2548 wrote to memory of 2940	2548	svchost.exe	34
PID 2548 wrote to memory of 2940	2548	svchost.exe	34
PID 1636 wrote to memory of 2920	1636	csrss.exe	36
PID 1636 wrote to memory of 2920	1636	csrss.exe	36
PID 1636 wrote to memory of 2920	1636	csrss.exe	36
PID 1636 wrote to memory of 2696	1636	csrss.exe	38
PID 1636 wrote to memory of 2696	1636	csrss.exe	38
PID 1636 wrote to memory of 2696	1636	csrss.exe	38
PID 2548 wrote to memory of 2448	2548	svchost.exe	40
PID 2548 wrote to memory of 2448	2548	svchost.exe	40
PID 2548 wrote to memory of 2448	2548	svchost.exe	40
PID 1636 wrote to memory of 2692	1636	csrss.exe	42
PID 1636 wrote to memory of 2692	1636	csrss.exe	42
PID 1636 wrote to memory of 2692	1636	csrss.exe	42
PID 2548 wrote to memory of 1504	2548	svchost.exe	44
PID 2548 wrote to memory of 1504	2548	svchost.exe	44
PID 2548 wrote to memory of 1504	2548	svchost.exe	44
PID 1636 wrote to memory of 3012	1636	csrss.exe	46
PID 1636 wrote to memory of 3012	1636	csrss.exe	46
PID 1636 wrote to memory of 3012	1636	csrss.exe	46
PID 2548 wrote to memory of 2996	2548	svchost.exe	48
PID 2548 wrote to memory of 2996	2548	svchost.exe	48
PID 2548 wrote to memory of 2996	2548	svchost.exe	48

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\Builder WorldWind Pro‌‌.exe
"C:\Users\Admin\AppData\Local\Temp\Builder WorldWind Pro‌‌.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Local\Temp\Builder WorldWind Pro.exe
  "C:\Users\Admin\AppData\Local\Temp\Builder WorldWind Pro.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:356
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2548
- - 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\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2940
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2448
- - 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\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1504
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2996
- C:\ProgramData\csrss.exe
  "C:\ProgramData\csrss.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1636
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\csrss.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2920
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'csrss.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2696
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\csrss.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2692
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'csrss.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3012

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\csrss.exe

Filesize
28KB

MD5
4d250bcbc14b9b2076b4c651ee3b7deb

SHA1
f5cd7173e1797f085b2da82cfa3729e0144bc16b

SHA256
41a2f2ca1bdf22fcef635dba5bfd267d32c432aa2f9f00c1574465712d7a5260

SHA512
3c3ef5bf7ce6490864256c779493275710645b8cd6087e982b9f49cf1b76f35d1f38799e2641ba5bad00d616aac1eead7b922630795eb88d4a398964365007a2

Download Submit
C:\Users\Admin\AppData\Local\Temp\Builder WorldWind Pro.exe

Filesize
416KB

MD5
5e503d24ca178db83e5d931990c1baa6

SHA1
4873707dde8e39da9898dd324a5912d2a30482c6

SHA256
e0e74379954acb4d9847c0cfb63e8a4028217d859c74ad97b40504627277d16b

SHA512
3bd9474ee1dfc2fe2acd1c22518f10b13b938ef19fafa2fd540ca650533508f3aa66fa17cba43a70aa9eeba6b6ab4bdb5724262e869187756f5a721b38214f68

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\M8EKI4WTLBEDJO2C6FPI.temp

Filesize
7KB

MD5
c3d9dd35376d4f40e188c1b43584c7ca

SHA1
a9ed8d6e45ef4e663ab37accb2f3293b35fb38dd

SHA256
204d2a7c2eaf9148cfb9632f2f86ae9bb4b3bd666d6b32c3273a2f8cfc4a5ca4

SHA512
243b9aac950969e13147dd50de3ba6798522122e670f5d857019631fb767c0c45730ba3a310dd7abce6781cbdf8b25f04bf93243b558a8784d1196fac139edb0

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
76KB

MD5
7c1243aac3248ae75cc2bab7bf4dfaba

SHA1
3dd055ef06380e5886f59b76761132c36e8b3e8f

SHA256
dbf81c18b8fa71de185da60a70e41f5799405e5a8331e759b399cab5353a1eda

SHA512
3f643f2ec6ca210247eab13abfb2e7e73e0f8621e137c9c1fedc3390fbd5129d78dba438988fa6cf70800def4f60cc2a320e8f269b2bfeaa63bade64c5a2bcbf

Download Submit
memory/356-25-0x0000000000E50000-0x0000000000EBE000-memory.dmp

Filesize
440KB

Download
memory/1636-23-0x0000000000A50000-0x0000000000A5E000-memory.dmp

Filesize
56KB

Download
memory/2036-24-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2036-0-0x000007FEF5C53000-0x000007FEF5C54000-memory.dmp

Filesize
4KB

Download
memory/2036-5-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2036-1-0x0000000000E50000-0x0000000000EB6000-memory.dmp

Filesize
408KB

Download
memory/2448-47-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/2548-18-0x0000000000A70000-0x0000000000A8A000-memory.dmp

Filesize
104KB

Download
memory/2696-48-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2940-30-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2940-31-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download