xworm | a136212c5dae84098771cefb64e996a7f12ae38b2ec0f53b7b8065310a167f49

General

Target

XClient.exe
Size

71KB
MD5

e45a311b01b3e3174b188ed4d73e6e82
SHA1

7ca5b64e103bbe078d7ba94481f0b042c37ac48e
SHA256

a136212c5dae84098771cefb64e996a7f12ae38b2ec0f53b7b8065310a167f49
SHA512

a64ec9ef713083a88e77a7c6c7dceb0e6f9393a5ce07ca2772b27dccbe4aeb0941e3b61b47f1216527fb795aeed79d8a392b7bce49ca4cee90f937731996ba08
SSDEEP

1536:ZgpiJEUAxRRA8bNxWlOjgjm0XtKLZ9bxeIBeJDPaz6ecOx2A0xsAn+K:Z9WUYRRVNjYQd9bxbMJrqcOx2A0d+K

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

around-four.gl.at.ply.gg:21052

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/2296-1-0x00000000011E0000-0x00000000011F8000-memory.dmp	family_xworm
behavioral1/files/0x000d000000015d50-34.dat	family_xworm
behavioral1/memory/1380-36-0x0000000000A00000-0x0000000000A18000-memory.dmp	family_xworm
behavioral1/memory/2448-38-0x0000000000DA0000-0x0000000000DB8000-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
1332	powershell.exe
2344	powershell.exe
2772	powershell.exe
2844	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1380	security
2448	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-1-5-21-3533259084-2542256011-65585152-1000\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
2560	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2296	XClient.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1332	powershell.exe
2344	powershell.exe
2772	powershell.exe
2844	powershell.exe
2296	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2296	XClient.exe
Token: SeDebugPrivilege	1332	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeDebugPrivilege	2772	powershell.exe
Token: SeDebugPrivilege	2844	powershell.exe
Token: SeDebugPrivilege	2296	XClient.exe
Token: SeDebugPrivilege	1380	security
Token: SeDebugPrivilege	2448	security

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2296	XClient.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 1332	2296	XClient.exe	30
PID 2296 wrote to memory of 1332	2296	XClient.exe	30
PID 2296 wrote to memory of 1332	2296	XClient.exe	30
PID 2296 wrote to memory of 2344	2296	XClient.exe	32
PID 2296 wrote to memory of 2344	2296	XClient.exe	32
PID 2296 wrote to memory of 2344	2296	XClient.exe	32
PID 2296 wrote to memory of 2772	2296	XClient.exe	34
PID 2296 wrote to memory of 2772	2296	XClient.exe	34
PID 2296 wrote to memory of 2772	2296	XClient.exe	34
PID 2296 wrote to memory of 2844	2296	XClient.exe	36
PID 2296 wrote to memory of 2844	2296	XClient.exe	36
PID 2296 wrote to memory of 2844	2296	XClient.exe	36
PID 2296 wrote to memory of 2560	2296	XClient.exe	39
PID 2296 wrote to memory of 2560	2296	XClient.exe	39
PID 2296 wrote to memory of 2560	2296	XClient.exe	39
PID 2040 wrote to memory of 1380	2040	taskeng.exe	43
PID 2040 wrote to memory of 1380	2040	taskeng.exe	43
PID 2040 wrote to memory of 1380	2040	taskeng.exe	43
PID 2040 wrote to memory of 2448	2040	taskeng.exe	44
PID 2040 wrote to memory of 2448	2040	taskeng.exe	44
PID 2040 wrote to memory of 2448	2040	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:2296
- 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:1332
- 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:2344
- 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:2772
- 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:2844
- 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:2560

C:\Windows\system32\taskeng.exe
taskeng.exe {1B417DC7-3CF9-4E7C-9A4C-51A41FC4C35B} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Roaming\security
  C:\Users\Admin\AppData\Roaming\security
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1380
- C:\Users\Admin\AppData\Roaming\security
  C:\Users\Admin\AppData\Roaming\security
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2448

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
278c2e62c735f8479bec0d0b0be2bfbf

SHA1
2380bec05691eed52151dde5ed3085f55ddaeb59

SHA256
8ebfece8a7583ba24137426478f6c4f1efd6f33df31533656dcb280ace938a4b

SHA512
06b54172e760a406468b4eda5682a9bb488ceab4c581d21dbaea913b1bb53fb929d551f5dd5b7e9e576ee487e02c4563956038b5a71e14d6757156c3db34e88b

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

Filesize
71KB

MD5
e45a311b01b3e3174b188ed4d73e6e82

SHA1
7ca5b64e103bbe078d7ba94481f0b042c37ac48e

SHA256
a136212c5dae84098771cefb64e996a7f12ae38b2ec0f53b7b8065310a167f49

SHA512
a64ec9ef713083a88e77a7c6c7dceb0e6f9393a5ce07ca2772b27dccbe4aeb0941e3b61b47f1216527fb795aeed79d8a392b7bce49ca4cee90f937731996ba08

Download Submit
memory/1332-6-0x00000000028C0000-0x0000000002940000-memory.dmp

Filesize
512KB

Download
memory/1332-7-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/1332-8-0x0000000002870000-0x0000000002878000-memory.dmp

Filesize
32KB

Download
memory/1380-36-0x0000000000A00000-0x0000000000A18000-memory.dmp

Filesize
96KB

Download
memory/2296-30-0x000007FEF58D3000-0x000007FEF58D4000-memory.dmp

Filesize
4KB

Download
memory/2296-29-0x000000001B230000-0x000000001B2B0000-memory.dmp

Filesize
512KB

Download
memory/2296-0-0x000007FEF58D3000-0x000007FEF58D4000-memory.dmp

Filesize
4KB

Download
memory/2296-31-0x000000001B230000-0x000000001B2B0000-memory.dmp

Filesize
512KB

Download
memory/2296-1-0x00000000011E0000-0x00000000011F8000-memory.dmp

Filesize
96KB

Download
memory/2344-15-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2344-14-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/2448-38-0x0000000000DA0000-0x0000000000DB8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads