xworm | 2d1e8047e2ded5efb6eb40b598128d026d68f5202893dce72c3dcbd4c260b8e7

Analysis

max time kernel
148s
max time network
111s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
18-01-2025 17:45

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General

Target

XClient.exe
Size

83KB
MD5

c1d3a7d174afa1e7c9c8005ae0a33a6d
SHA1

c52819e3fe93af8156046cbc2002e4c895072a9a
SHA256

2d1e8047e2ded5efb6eb40b598128d026d68f5202893dce72c3dcbd4c260b8e7
SHA512

0343d57aae17c7d985477e5ab60b5655f588775356c3b43b7a932bb56a04c9ea6fb7ab6daae62013ed3dcc531d44c04a7ce00814b01cd09a07f9bf9cbeb35089
SSDEEP

1536:5u/rlJEdXdakv+bklBfEqIw6RqymrBS+jrOueqZjP6Ub:5is+bklBu49SirOup0e

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2652-1-0x0000000000A90000-0x0000000000AAC000-memory.dmp	family_xworm
behavioral1/files/0x000a0000000120fe-35.dat	family_xworm
behavioral1/memory/1868-37-0x0000000000D80000-0x0000000000D9C000-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 12 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2340	powershell.exe
3064	powershell.exe
2208	powershell.exe
1276	powershell.exe
2076	powershell.exe
1356	powershell.exe
1800	powershell.exe
2176	powershell.exe
2012	powershell.exe
2784	powershell.exe
2712	powershell.exe
2756	powershell.exe

Drops startup file 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	XClient.exe
File opened for modification	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
1868	svchost.exe
336	svchost.exe
2944	svchost.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	svchost.exe

Drops file in System32 directory 8 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2644	schtasks.exe
1344	schtasks.exe
1540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
2784	powershell.exe
3064	powershell.exe
2712	powershell.exe
2756	powershell.exe
2652	XClient.exe
2076	powershell.exe
1356	powershell.exe
2208	powershell.exe
1800	powershell.exe
336	svchost.exe
1276	powershell.exe
2176	powershell.exe
2340	powershell.exe
2012	powershell.exe
2944	svchost.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	2652	XClient.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	3064	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2652	XClient.exe
Token: SeDebugPrivilege	1868	svchost.exe
Token: SeDebugPrivilege	336	svchost.exe
Token: SeDebugPrivilege	2076	powershell.exe
Token: SeDebugPrivilege	1356	powershell.exe
Token: SeDebugPrivilege	2208	powershell.exe
Token: SeDebugPrivilege	1800	powershell.exe
Token: SeDebugPrivilege	336	svchost.exe
Token: SeDebugPrivilege	2944	svchost.exe
Token: SeDebugPrivilege	1276	powershell.exe
Token: SeDebugPrivilege	2176	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeDebugPrivilege	2012	powershell.exe
Token: SeDebugPrivilege	2944	svchost.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2652	XClient.exe
336	svchost.exe
2944	svchost.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 2784	2652	XClient.exe	30
PID 2652 wrote to memory of 2784	2652	XClient.exe	30
PID 2652 wrote to memory of 2784	2652	XClient.exe	30
PID 2652 wrote to memory of 3064	2652	XClient.exe	32
PID 2652 wrote to memory of 3064	2652	XClient.exe	32
PID 2652 wrote to memory of 3064	2652	XClient.exe	32
PID 2652 wrote to memory of 2712	2652	XClient.exe	34
PID 2652 wrote to memory of 2712	2652	XClient.exe	34
PID 2652 wrote to memory of 2712	2652	XClient.exe	34
PID 2652 wrote to memory of 2756	2652	XClient.exe	36
PID 2652 wrote to memory of 2756	2652	XClient.exe	36
PID 2652 wrote to memory of 2756	2652	XClient.exe	36
PID 2652 wrote to memory of 1344	2652	XClient.exe	38
PID 2652 wrote to memory of 1344	2652	XClient.exe	38
PID 2652 wrote to memory of 1344	2652	XClient.exe	38
PID 2288 wrote to memory of 1868	2288	taskeng.exe	42
PID 2288 wrote to memory of 1868	2288	taskeng.exe	42
PID 2288 wrote to memory of 1868	2288	taskeng.exe	42
PID 2288 wrote to memory of 336	2288	taskeng.exe	43
PID 2288 wrote to memory of 336	2288	taskeng.exe	43
PID 2288 wrote to memory of 336	2288	taskeng.exe	43
PID 336 wrote to memory of 2076	336	svchost.exe	44
PID 336 wrote to memory of 2076	336	svchost.exe	44
PID 336 wrote to memory of 2076	336	svchost.exe	44
PID 336 wrote to memory of 1356	336	svchost.exe	46
PID 336 wrote to memory of 1356	336	svchost.exe	46
PID 336 wrote to memory of 1356	336	svchost.exe	46
PID 336 wrote to memory of 2208	336	svchost.exe	48
PID 336 wrote to memory of 2208	336	svchost.exe	48
PID 336 wrote to memory of 2208	336	svchost.exe	48
PID 336 wrote to memory of 1800	336	svchost.exe	50
PID 336 wrote to memory of 1800	336	svchost.exe	50
PID 336 wrote to memory of 1800	336	svchost.exe	50
PID 336 wrote to memory of 1540	336	svchost.exe	52
PID 336 wrote to memory of 1540	336	svchost.exe	52
PID 336 wrote to memory of 1540	336	svchost.exe	52
PID 2288 wrote to memory of 2944	2288	taskeng.exe	54
PID 2288 wrote to memory of 2944	2288	taskeng.exe	54
PID 2288 wrote to memory of 2944	2288	taskeng.exe	54
PID 2944 wrote to memory of 1276	2944	svchost.exe	55
PID 2944 wrote to memory of 1276	2944	svchost.exe	55
PID 2944 wrote to memory of 1276	2944	svchost.exe	55
PID 2944 wrote to memory of 2176	2944	svchost.exe	57
PID 2944 wrote to memory of 2176	2944	svchost.exe	57
PID 2944 wrote to memory of 2176	2944	svchost.exe	57
PID 2944 wrote to memory of 2340	2944	svchost.exe	59
PID 2944 wrote to memory of 2340	2944	svchost.exe	59
PID 2944 wrote to memory of 2340	2944	svchost.exe	59
PID 2944 wrote to memory of 2012	2944	svchost.exe	61
PID 2944 wrote to memory of 2012	2944	svchost.exe	61
PID 2944 wrote to memory of 2012	2944	svchost.exe	61
PID 2944 wrote to memory of 2644	2944	svchost.exe	63
PID 2944 wrote to memory of 2644	2944	svchost.exe	63
PID 2944 wrote to memory of 2644	2944	svchost.exe	63

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- 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:2652
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2784
- 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:3064
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2712
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1344

C:\Windows\system32\taskeng.exe
taskeng.exe {1025CD70-3942-4425-BFD2-8110849F187B} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1868
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:336
- - 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
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2076
- - 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
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1356
- - 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
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2208
- - 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
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1800
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1540
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2944
- - 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
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1276
- - 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
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2176
- - 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
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2340
- - 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
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2012
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2644

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\JUV89GS6KXDN8G5E6VXG.temp

Filesize
7KB

MD5
e6e35675dc7184ab65c638df662a8fd4

SHA1
5ee221aebc884b4ca36c12a15e96a1bca36382d9

SHA256
0ee539cacbe32123343e44a78afae3908a809d968424c42b3fa89798a17b05f1

SHA512
5ff79c10571f8c10fbddfd79f0de20baa5c683cea6f8eb4f28e5952c36d4623df285a6d5d4f62966eac655ba639c212c4bc009c0b99306f338870699b2e080f8

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk

Filesize
692B

MD5
1057e88d17e59a0ab858339908f5f3a2

SHA1
795e31e0684bcade9e785a7c258b648a989247dd

SHA256
00989e5e8ae29c5a24e5fb9f501cc864a65dde7d5d100c89b421721d48e185a0

SHA512
844eeebf3148407fa11633dda0d7e505d545bbbd93670312362e3030955879b82ac8b923f21d8cf749f091edfceee39e0b80bdebfcd23dc565d72e172646fad6

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

Filesize
83KB

MD5
c1d3a7d174afa1e7c9c8005ae0a33a6d

SHA1
c52819e3fe93af8156046cbc2002e4c895072a9a

SHA256
2d1e8047e2ded5efb6eb40b598128d026d68f5202893dce72c3dcbd4c260b8e7

SHA512
0343d57aae17c7d985477e5ab60b5655f588775356c3b43b7a932bb56a04c9ea6fb7ab6daae62013ed3dcc531d44c04a7ce00814b01cd09a07f9bf9cbeb35089

Download Submit
memory/1276-71-0x0000000001EE0000-0x0000000001EE8000-memory.dmp

Filesize
32KB

Download
memory/1868-37-0x0000000000D80000-0x0000000000D9C000-memory.dmp

Filesize
112KB

Download
memory/2176-78-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2652-32-0x000007FEF5763000-0x000007FEF5764000-memory.dmp

Filesize
4KB

Download
memory/2652-0-0x000007FEF5763000-0x000007FEF5764000-memory.dmp

Filesize
4KB

Download
memory/2652-31-0x000000001B190000-0x000000001B210000-memory.dmp

Filesize
512KB

Download
memory/2652-33-0x000000001B190000-0x000000001B210000-memory.dmp

Filesize
512KB

Download
memory/2652-1-0x0000000000A90000-0x0000000000AAC000-memory.dmp

Filesize
112KB

Download
memory/2784-8-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2784-6-0x0000000002A00000-0x0000000002A80000-memory.dmp

Filesize
512KB

Download
memory/2784-7-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/3064-15-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/3064-14-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download