xworm | 9736108b514387789ef980f84f47bacf167e63f7345ae3b7b7709b522e5d2bb5

General

Target

XClient.exe
Size

75KB
MD5

f7ff3c61ccfe4bf667be21d19d15ae02
SHA1

5b8513ce3c9f9d99f40c5c8ada5c185875c5d5dc
SHA256

9736108b514387789ef980f84f47bacf167e63f7345ae3b7b7709b522e5d2bb5
SHA512

23e0e82f5728735594e17cbe4560589ec1f98bdb9b7945938685f504b41611eb538b77ac70b858521d4c267fb70745a62393c28cd33d04b70e81c9c9739a630e
SSDEEP

1536:xaStNYRxaTNDyXDb6xDcPZZD6SQXsOAt5KdDy:/qa0zb6xgksOGuy

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:48776

localhost:48776

via-media.gl.at.ply.gg:48776

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2044-1-0x0000000000A20000-0x0000000000A3A000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\XClient.exe	family_xworm

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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

1072 powershell.exe
4060 powershell.exe
4244 powershell.exe
184 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

Processes:

XClient.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation XClient.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

Processes:

XClient.exe

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

Executes dropped EXE 3 IoCs

Processes:

XClient.exeXClient.exeXClient.exe

pid process

3688 XClient.exe
2468 XClient.exe
4672 XClient.exe

pid	process
3688	XClient.exe
2468	XClient.exe
4672	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XClient.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.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.

Processes:

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
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

1848 schtasks.exe

flow	ioc
1	ip-api.com

pid	process
1848	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient.exe

pid	process
1072	powershell.exe
1072	powershell.exe
4060	powershell.exe
4060	powershell.exe
4244	powershell.exe
4244	powershell.exe
184	powershell.exe
184	powershell.exe
2044	XClient.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

XClient.exepowershell.exepowershell.exepowershell.exepowershell.exeXClient.exeXClient.exeXClient.exe

description	pid	process
Token: SeDebugPrivilege	2044	XClient.exe
Token: SeDebugPrivilege	1072	powershell.exe
Token: SeDebugPrivilege	4060	powershell.exe
Token: SeDebugPrivilege	4244	powershell.exe
Token: SeDebugPrivilege	184	powershell.exe
Token: SeDebugPrivilege	2044	XClient.exe
Token: SeDebugPrivilege	3688	XClient.exe
Token: SeDebugPrivilege	2468	XClient.exe
Token: SeDebugPrivilege	4672	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid process

2044 XClient.exe

pid	process
2044	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

XClient.exe

description	pid	process	target process
PID 2044 wrote to memory of 1072	2044	XClient.exe	powershell.exe
PID 2044 wrote to memory of 1072	2044	XClient.exe	powershell.exe
PID 2044 wrote to memory of 4060	2044	XClient.exe	powershell.exe
PID 2044 wrote to memory of 4060	2044	XClient.exe	powershell.exe
PID 2044 wrote to memory of 4244	2044	XClient.exe	powershell.exe
PID 2044 wrote to memory of 4244	2044	XClient.exe	powershell.exe
PID 2044 wrote to memory of 184	2044	XClient.exe	powershell.exe
PID 2044 wrote to memory of 184	2044	XClient.exe	powershell.exe
PID 2044 wrote to memory of 1848	2044	XClient.exe	schtasks.exe
PID 2044 wrote to memory of 1848	2044	XClient.exe	schtasks.exe

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⤵
- 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:2044
- 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:1072
- 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:4060
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4244
- 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:184
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1848

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3688

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2468

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
08fbb63d99abc22bb9a1ac2d5f6c8700

SHA1
81388978ca479792378d8ca344912df8c3416470

SHA256
a98babf87b77a1fc5317dba0fa4db591da57aa9aef53977b845a237d2d7e6024

SHA512
28847dfa45570fce1f4598042786357a28cd1629c9778892805b7beea59206b25c3606cf0069d7c270cd561d46d926129269eef53c43b78e0aaf199dcd7a209a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
fd98baf5a9c30d41317663898985593b

SHA1
ea300b99f723d2429d75a6c40e0838bf60f17aad

SHA256
9d97a5bbc88fdcceac25f293383f7e5ce242675460ffbfb2ee9090870c034e96

SHA512
bf4dbbd671b5d7afb326622a7c781f150860294d3dba7160330046c258c84a15981c70e50d84dc7faaa7cc8b8c90bf8df818b3f2d3806a8a3671dfe5e38fe7b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iy232j5h.4gi.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
75KB

MD5
f7ff3c61ccfe4bf667be21d19d15ae02

SHA1
5b8513ce3c9f9d99f40c5c8ada5c185875c5d5dc

SHA256
9736108b514387789ef980f84f47bacf167e63f7345ae3b7b7709b522e5d2bb5

SHA512
23e0e82f5728735594e17cbe4560589ec1f98bdb9b7945938685f504b41611eb538b77ac70b858521d4c267fb70745a62393c28cd33d04b70e81c9c9739a630e

Download Submit
memory/1072-9-0x00000214F8B10000-0x00000214F8B32000-memory.dmp

Filesize
136KB

Download
memory/1072-15-0x00007FFD69620000-0x00007FFD6A0E1000-memory.dmp

Filesize
10.8MB

Download
memory/1072-17-0x00007FFD69620000-0x00007FFD6A0E1000-memory.dmp

Filesize
10.8MB

Download
memory/1072-14-0x00007FFD69620000-0x00007FFD6A0E1000-memory.dmp

Filesize
10.8MB

Download
memory/1072-3-0x00007FFD69620000-0x00007FFD6A0E1000-memory.dmp

Filesize
10.8MB

Download
memory/2044-0-0x00007FFD69623000-0x00007FFD69625000-memory.dmp

Filesize
8KB

Download
memory/2044-2-0x00007FFD69620000-0x00007FFD6A0E1000-memory.dmp

Filesize
10.8MB

Download
memory/2044-58-0x00007FFD69623000-0x00007FFD69625000-memory.dmp

Filesize
8KB

Download
memory/2044-59-0x00007FFD69620000-0x00007FFD6A0E1000-memory.dmp

Filesize
10.8MB

Download
memory/2044-1-0x0000000000A20000-0x0000000000A3A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads