xworm | bdd3b9c3ca881508c48d75b80d6b57a43179a4b96606a60a4a361feb84ee2a3b

General

Target

XClient.exe
Size

82KB
MD5

e3a406131824aa10710a92340dfb15d6
SHA1

1628ebcfc506987fb6a0345982203a996a2313bd
SHA256

bdd3b9c3ca881508c48d75b80d6b57a43179a4b96606a60a4a361feb84ee2a3b
SHA512

d982a32441f0596201c127f3d14839ba8e2cf5cd5a7dbed9d2f598dacc132a6a78ec78cd37f2b0772af61b08f89ffd38946babb4095413e4166776dd6fb6c689
SSDEEP

1536:8Kw5IeMK0SJEpZcIpZ+Zdd49bdm3UykGmF6LzHVgUeuOoJWRPvx5wzn+5:wFQSJwtO29bdmrJheuOooRPvUL+5

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

blood-pattern.gl.at.ply.gg:5353

Attributes

Install_directory
%AppData%
install_file
USB.exe
telegram
https://api.telegram.org/bot7704029346:AAHPre1lXQa0UfPCpOUXJZ9UXA9mFxvH4Gk/sendMessage?chat_id=7590668020

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1628-1-0x0000000001210000-0x000000000122A000-memory.dmp	family_xworm
behavioral1/files/0x000b000000016d3f-34.dat	family_xworm
behavioral1/memory/2016-36-0x0000000001020000-0x000000000103A000-memory.dmp	family_xworm
behavioral1/memory/2316-38-0x0000000001380000-0x000000000139A000-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
2760	powershell.exe
2616	powershell.exe
2780	powershell.exe
2064	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2016	security
2316	security

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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\security = "C:\\Users\\Admin\\AppData\\Roaming\\security"	XClient.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 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2324	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1628	XClient.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2064	powershell.exe
2760	powershell.exe
2616	powershell.exe
2780	powershell.exe
1628	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	XClient.exe
Token: SeDebugPrivilege	2064	powershell.exe
Token: SeDebugPrivilege	2760	powershell.exe
Token: SeDebugPrivilege	2616	powershell.exe
Token: SeDebugPrivilege	2780	powershell.exe
Token: SeDebugPrivilege	1628	XClient.exe
Token: SeDebugPrivilege	2016	security
Token: SeDebugPrivilege	2316	security

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1628	XClient.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2064	1628	XClient.exe	31
PID 1628 wrote to memory of 2064	1628	XClient.exe	31
PID 1628 wrote to memory of 2064	1628	XClient.exe	31
PID 1628 wrote to memory of 2760	1628	XClient.exe	33
PID 1628 wrote to memory of 2760	1628	XClient.exe	33
PID 1628 wrote to memory of 2760	1628	XClient.exe	33
PID 1628 wrote to memory of 2616	1628	XClient.exe	35
PID 1628 wrote to memory of 2616	1628	XClient.exe	35
PID 1628 wrote to memory of 2616	1628	XClient.exe	35
PID 1628 wrote to memory of 2780	1628	XClient.exe	37
PID 1628 wrote to memory of 2780	1628	XClient.exe	37
PID 1628 wrote to memory of 2780	1628	XClient.exe	37
PID 1628 wrote to memory of 2324	1628	XClient.exe	39
PID 1628 wrote to memory of 2324	1628	XClient.exe	39
PID 1628 wrote to memory of 2324	1628	XClient.exe	39
PID 1876 wrote to memory of 2016	1876	taskeng.exe	43
PID 1876 wrote to memory of 2016	1876	taskeng.exe	43
PID 1876 wrote to memory of 2016	1876	taskeng.exe	43
PID 1876 wrote to memory of 2316	1876	taskeng.exe	44
PID 1876 wrote to memory of 2316	1876	taskeng.exe	44
PID 1876 wrote to memory of 2316	1876	taskeng.exe	44

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: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1628
- 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:2064
- 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:2760
- 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\security'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2616
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'security'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2780
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "security" /tr "C:\Users\Admin\AppData\Roaming\security"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2324

C:\Windows\system32\taskeng.exe
taskeng.exe {B0FBF6B9-D352-4005-8ACF-D21905D7C0A9} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1876
- C:\Users\Admin\AppData\Roaming\security
  C:\Users\Admin\AppData\Roaming\security
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2016
- C:\Users\Admin\AppData\Roaming\security
  C:\Users\Admin\AppData\Roaming\security
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2316

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
4b0c9f692ff07b562f589fd8e359709f

SHA1
bf3a623e26aef503c49cdc51b2f5dc62ed5f5190

SHA256
0b4399dffc0aa037ebe98bb118c347b704425bb2502ef3f1721197797fb796cf

SHA512
026970065ff45447d1cfa74069f51293163a88536ef62da98f50d69007dd31d8e90cb99a7ee692564a7d914453dfaae3ccfa90d2949a376adeaa4a4bea9e5ded

Download Submit
C:\Users\Admin\AppData\Roaming\security

Filesize
82KB

MD5
e3a406131824aa10710a92340dfb15d6

SHA1
1628ebcfc506987fb6a0345982203a996a2313bd

SHA256
bdd3b9c3ca881508c48d75b80d6b57a43179a4b96606a60a4a361feb84ee2a3b

SHA512
d982a32441f0596201c127f3d14839ba8e2cf5cd5a7dbed9d2f598dacc132a6a78ec78cd37f2b0772af61b08f89ffd38946babb4095413e4166776dd6fb6c689

Download Submit
memory/1628-29-0x000000001B0E0000-0x000000001B160000-memory.dmp

Filesize
512KB

Download
memory/1628-1-0x0000000001210000-0x000000000122A000-memory.dmp

Filesize
104KB

Download
memory/1628-0-0x000007FEF6533000-0x000007FEF6534000-memory.dmp

Filesize
4KB

Download
memory/1628-31-0x000000001B0E0000-0x000000001B160000-memory.dmp

Filesize
512KB

Download
memory/1628-30-0x000007FEF6533000-0x000007FEF6534000-memory.dmp

Filesize
4KB

Download
memory/2016-36-0x0000000001020000-0x000000000103A000-memory.dmp

Filesize
104KB

Download
memory/2064-7-0x000000001B860000-0x000000001BB42000-memory.dmp

Filesize
2.9MB

Download
memory/2064-8-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/2064-6-0x0000000002EC0000-0x0000000002F40000-memory.dmp

Filesize
512KB

Download
memory/2316-38-0x0000000001380000-0x000000000139A000-memory.dmp

Filesize
104KB

Download
memory/2760-15-0x00000000027E0000-0x00000000027E8000-memory.dmp

Filesize
32KB

Download
memory/2760-14-0x000000001B830000-0x000000001BB12000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads