xworm | eec5d83fcb62d0c9b813081ef2cd9debf729826c0c20f00df764b7dda642c397

Analysis

max time kernel
141s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2024, 01:51

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General

Target
GhostClient.exe
Size 5.0MB
Sample240329-b9tnmsed81
SHA256 deadb78865ea2dc4347b895f19372c05482a14b0af6964e09b136eb73b431a1e
MD5 8b36003e47da77255a4bc631359a9845
SHA1 659aa2943770ed49557fd32a28a310d7e3961b52
SHA512 1d8fd97fc7985804e5a6c0a114e85b79ac41c93f723ab88ab177846febe30838c71d531731e2b3a5502c150b0c83966be3ec9d836013df4e2099172163f2d9fc
SSDEEP 98304:ceUB6PiuZog3w97BI3lUKOPTu3d4BQ9455HEM/pBvOkSmK5ooAvNw82og6:GB6lTlUBq3eBf/plOk9Katvv2
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023228-13.dat	family_xworm
behavioral2/memory/4712-21-0x0000000000430000-0x0000000000444000-memory.dmp	family_xworm

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

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\vliwPLjvJxYSUHhFuimNKzGI\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\vliwPLjvJxYSUHhFuimNKzGI"	ghost.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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	GhostClient.exe

Executes dropped EXE 2 IoCs

pid	Process
4916	ghost.exe
4712	2.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
16	ip-api.com

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4916	ghost.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-557049126-2506969350-2798870634-1000\{C2D8C483-9CFF-4775-842D-9CB406D6803C}	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4916	ghost.exe
4916	ghost.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4916	ghost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4712	2.exe
Token: SeLoadDriverPrivilege	4916	ghost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4376	OpenWith.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 4916	2396	GhostClient.exe	87
PID 2396 wrote to memory of 4916	2396	GhostClient.exe	87
PID 2396 wrote to memory of 4712	2396	GhostClient.exe	89
PID 2396 wrote to memory of 4712	2396	GhostClient.exe	89

C:\Users\Admin\AppData\Local\Temp\GhostClient.exe
"C:\Users\Admin\AppData\Local\Temp\GhostClient.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Users\Admin\AppData\Roaming\ghost.exe
  "C:\Users\Admin\AppData\Roaming\ghost.exe"
  2⤵
  - Sets service image path in registry
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:4916
- C:\Users\Admin\AppData\Roaming\2.exe
  "C:\Users\Admin\AppData\Roaming\2.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4712

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Suspicious use of SetWindowsHookEx
PID:4376

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k BcastDVRUserService -s BcastDVRUserService
1⤵
- Checks processor information in registry
- Modifies registry class
PID:5032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

2.exe

Path C:\Users\Admin\AppData\Roaming\2.exe
Size 57KB
SHA256 6356c9423c9c126773d51ddaed2798e0cf83d2c98418cdf0edb4fa4345c161dd
MD5 ce8088c421a3730c87d7a4d3488f6804
SHA1 9e6f6073b6b87aabd712653fae7e8bd131683cf9
SHA512 a0493db020f2adef353a183b2741ca759118d69932787f4474ccc37e76952dc2d8e4c660056b299e84626e52c8d8a2f72fc55f50eab43258991ffe224328639d
SSDEEP 1536:mSKqzTjR1oiWU7zalMdbbzNFTicdR/S68OoifKmT:mSKKEo2lObzNFjdRYOtlT
MD5 SHA1 SHA512 SSDEEP

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ghost.exe

Path C:\Users\Admin\AppData\Roaming\ghost.exe
Size 4.9MB
SHA256 b61907b9081bb5d7125264c5e60de013c02b7b866148248de603fb55f8d39a18
MD5 340753116751ef6f5212667501a0e562
SHA1 ad4d25b43964c1c54accdcbe97a3f2ca80d15894
SHA512 d9564e38ea4000c16ebacc4a4b95925c8998d2bce33b3ad7bd0aa0b220d60f372d798591f4365b1271085036055519e4a94afd47d51ad5a2c6002e1f54ffc2f2
SSDEEP 98304:w4KoSKQ6Kob7IdoOPn49MWTB9z2OuVIsFx6fZPELW4sF+JKcNWdZRM9b7:wAXQFob7Idj/4VTbaVIsSBfFoxMnsb
MD5 SHA1 SHA512 SSDEEP

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memory/2396-24-0x00007FFBA2850000-0x00007FFBA3311000-memory.dmp

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memory/2396-2-0x00007FFBA2850000-0x00007FFBA3311000-memory.dmp

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memory/2396-0-0x00000000007F0000-0x0000000000CF0000-memory.dmp

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memory/4712-21-0x0000000000430000-0x0000000000444000-memory.dmp

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memory/4712-23-0x00007FFBA2850000-0x00007FFBA3311000-memory.dmp

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memory/4712-33-0x000000001AFE0000-0x000000001AFF0000-memory.dmp

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memory/4712-34-0x00007FFBA2850000-0x00007FFBA3311000-memory.dmp

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memory/4916-27-0x00007FF6F34B0000-0x00007FF6F3D4F000-memory.dmp

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memory/4916-26-0x00007FF6F34B0000-0x00007FF6F3D4F000-memory.dmp

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memory/4916-25-0x00007FFBC1770000-0x00007FFBC1772000-memory.dmp

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memory/4916-32-0x00007FF6F34B0000-0x00007FF6F3D4F000-memory.dmp

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