xworm | c6f53b13c0a1e65c9c9aca1f0128e9db71b8559afe5dec3ff8de1b7d0cd1d761

General

Target
protected.exe
Size 60KB
Sample260504-nyr2wset2l
SHA256 c6f53b13c0a1e65c9c9aca1f0128e9db71b8559afe5dec3ff8de1b7d0cd1d761
MD5 8cde7e6367468668070ecaaa1d367681
SHA1 6b8f5b7040082ed75f455afa815c8af42f3dca70
SHA512 51bce2f307cb6db841ebf6928c2eb820a3d4e4653c7aed922407df5273dac1690c0cb336f2dd7d750a770bcf1eefd16130d091537293b30a49e03ef98f0faa75
SSDEEP 1536:hDVpyRPPTgyCw9WFsECXvgCYCqjs3nJtvsj:hDjcPTHCwKNCbRqs3fvsj
TLSH
T11F53C029B292A4DCC627CA7ED9F18671B7B37A0113564F7A1270C9380DB05B4AE34DDE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

xCl0eem-41543.portmap.host:41543

Mutex

XXsC1E1dIz0steuj

Attributes

Install_directory
%ProgramData%
install_file
windows Security Health host.exe

aes.plain

Signatures

Family: Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x002000000002b1c1-3.dat	family_xworm
behavioral2/memory/2492-5-0x0000000000550000-0x0000000000560000-memory.dmp	family_xworm

Enumerates VirtualBox registry keys 2 TTPs 2 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	protected.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	protected.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	protected.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	protected.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 Security Health host.lnk	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windows Security Health host.lnk	svchost.exe

Executes dropped EXE 3 IoCs

pid	Process
2492	svchost.exe
1800	svchost.exe
1632	windows Security Health 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-1-5-21-3119821332-640943685-2562343641-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsUpdateTask = "C:\\Users\\Admin\\AppData\\Local\\Temp\\protected.exe"	protected.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
1	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 1 IoCs

pid	Process
1800	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2492	svchost.exe
Token: SeDebugPrivilege	1800	svchost.exe
Token: SeDebugPrivilege	1800	svchost.exe
Token: SeDebugPrivilege	1632	windows Security Health host.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1800	svchost.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 2492	2472	protected.exe	79
PID 884 wrote to memory of 1800	884	protected.exe	86

C:\Users\Admin\AppData\Local\Temp\protected.exe
"C:\Users\Admin\AppData\Local\Temp\protected.exe"
1⤵
- Enumerates VirtualBox registry keys
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2492

C:\Users\Admin\AppData\Local\Temp\protected.exe
C:\Users\Admin\AppData\Local\Temp\protected.exe
1⤵
- Enumerates VirtualBox registry keys
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Suspicious use of WriteProcessMemory
PID:884
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1800

C:\PROGRA~3\windows Security Health host.exe
C:\PROGRA~3\WINDOW~1.EXE
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1632

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

svchost.exe

Path C:\Users\Admin\AppData\Local\Temp\svchost.exe
Size 40KB
SHA256 8cec85fed7bea46b5fe7c45229c4031cdacd1024bda4609e131d339ef8e15f6a
MD5 39c1c7ab5958b75b11718d6cad324b5f
SHA1 c90ec1c7c4b4ad57db6160e8c3e3fa3a8dc803d0
SHA512 1a7f1c20658bbbae8fc993cf975641d72906544ee810f7fda51cecb745a1075f4907684465b28f669a0e5f8b9ce35d709c879bae7da2736b5c84c3b705a777b3
SSDEEP 768:hb1euC4ecpAOEsoxEQIjotF5PC9I7gOMh13/tga:hJs8AOE7ELgFM9IEOMblX
TLSH
T1E9035C447B918221E5FEABF46DB36A020B31D6039E13D78E0CD8969B1F677C4CA817D6
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/884-14-0x00007FF64B2E0000-0x00007FF64B2F6000-memory.dmp

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memory/1632-26-0x0000000002570000-0x000000000257C000-memory.dmp

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memory/1800-16-0x00000000009E0000-0x00000000009EC000-memory.dmp

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memory/2472-6-0x00007FF64B2E0000-0x00007FF64B2F6000-memory.dmp

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memory/2472-8-0x00007FF64B2E0000-0x00007FF64B2F6000-memory.dmp

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memory/2492-5-0x0000000000550000-0x0000000000560000-memory.dmp

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memory/2492-7-0x000000001AE80000-0x000000001AE8C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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