xworm | b4d0de623a2eea73e2ca7caf215d6dd03c9655cfdd102c92f22ef250bebc1b8c

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2025, 02:03

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General

Target
setup.exe
Size 39KB
Sample250101-cg2dfsspfp
SHA256 b4d0de623a2eea73e2ca7caf215d6dd03c9655cfdd102c92f22ef250bebc1b8c
MD5 79a153fed350b587f41b6f9181902470
SHA1 d41d2a77777eadbefcf02aaf332a7c9c7aee940f
SHA512 c07c3ced66fce182d978484505d077c36adb7f765923a994847787e822b3148584137814b3e080da2ac4a015bfe6946b3a053bccb048886d0a9a36907f602246
SSDEEP 768:4cf2dBLv6XRMbEIDPiKuukR7LKtTfFWPt9eYz6cOMhRadS:4cGRv6heEIbiKuumnSFe9eYz6cOMLZ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

127.0.0.1:51949
regular-hydrogen.gl.at.ply.gg:51949

Mutex

nFTfGMrcnlCwcjyG

Attributes

Install_directory
%LocalAppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2244-1-0x0000000000D80000-0x0000000000D90000-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
32	powershell.exe
996	powershell.exe
4740	powershell.exe
4668	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	setup.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	setup.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	setup.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Local\\XClient.exe"	setup.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
4668	powershell.exe
4668	powershell.exe
32	powershell.exe
32	powershell.exe
996	powershell.exe
996	powershell.exe
4740	powershell.exe
4740	powershell.exe
2244	setup.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	setup.exe
Token: SeDebugPrivilege	4668	powershell.exe
Token: SeDebugPrivilege	32	powershell.exe
Token: SeDebugPrivilege	996	powershell.exe
Token: SeDebugPrivilege	4740	powershell.exe
Token: SeDebugPrivilege	2244	setup.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2244	setup.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 4668	2244	setup.exe	84
PID 2244 wrote to memory of 4668	2244	setup.exe	84
PID 2244 wrote to memory of 32	2244	setup.exe	86
PID 2244 wrote to memory of 32	2244	setup.exe	86
PID 2244 wrote to memory of 996	2244	setup.exe	88
PID 2244 wrote to memory of 996	2244	setup.exe	88
PID 2244 wrote to memory of 4740	2244	setup.exe	90
PID 2244 wrote to memory of 4740	2244	setup.exe	90

C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.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:2244
- 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\setup.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4668
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'setup.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:32
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:996
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4740

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

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 97a71179aa74dbcd1c58694ee6d2fa7faa432312db4f803611ac478d9c0256ec
MD5 f4038903775bd49192beef39594c3614
SHA1 db4d190d86ea4a231ce6b5408860220a1020077f
SHA512 059cf3c5afc9cc7eace9a6a9ae05db5ad1f7620e6def9885a317c377eb6cfe2056e4f3aa03c7a2035d21a332626d292116594303d97c5c82b8c5b0eedcbb9332
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 80a6102676f0311b37c57f3ebd8d18a138c27a44c7e44e8089f18e0bd988dc5b
MD5 044918c9da2668f4cf9fe40a413307c2
SHA1 6fad3e20fe457daed212725356a6dd7729a84dd8
SHA512 bebba48542e75e48eb25806a923eda6676584a816b54c5236cbd56deae0a3ac49bce16187f231c8fd36702009544360cccb79f6b1ac4b926e5af669bcb341c49
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d
MD5 34f595487e6bfd1d11c7de88ee50356a
SHA1 4caad088c15766cc0fa1f42009260e9a02f953bb
SHA512 10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165
MD5 a7cc007980e419d553568a106210549a
SHA1 c03099706b75071f36c3962fcc60a22f197711e0
SHA512 b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666
MD5 SHA1 SHA512

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__PSScriptPolicyTest_4nus2kgu.eta.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4nus2kgu.eta.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2244-1-0x0000000000D80000-0x0000000000D90000-memory.dmp

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memory/2244-0-0x00007FFD554F3000-0x00007FFD554F5000-memory.dmp

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memory/2244-58-0x00007FFD554F0000-0x00007FFD55FB1000-memory.dmp

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memory/2244-57-0x00007FFD554F3000-0x00007FFD554F5000-memory.dmp

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memory/2244-56-0x00007FFD554F0000-0x00007FFD55FB1000-memory.dmp

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memory/4668-11-0x00000279D4C10000-0x00000279D4C32000-memory.dmp

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memory/4668-17-0x00007FFD554F0000-0x00007FFD55FB1000-memory.dmp

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memory/4668-14-0x00007FFD554F0000-0x00007FFD55FB1000-memory.dmp

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memory/4668-13-0x00007FFD554F0000-0x00007FFD55FB1000-memory.dmp

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memory/4668-12-0x00007FFD554F0000-0x00007FFD55FB1000-memory.dmp

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