xworm | 69b4f3e7db53a18e1352367ecbf25dba0b86e96af655e6127db1b1205a181f63

General

Target

e5cb8c66cab6a972529a85480b9881bc.exe
Size

40KB
MD5

e5cb8c66cab6a972529a85480b9881bc
SHA1

58eb0e24f0eb4865838d307df886d2b40bfb77cd
SHA256

69b4f3e7db53a18e1352367ecbf25dba0b86e96af655e6127db1b1205a181f63
SHA512

6c049e084e00eea72b3b78480fb79879c8c961d188178b3c59211bbc69ab25deaf88453dc1f4ec23c08ee80e452a453464780193e849121f2f625f96f0dd26f3
SSDEEP

768:uNfPMSk3K/EzTb/0x8WuFZ4lJF5PC9O9EB68OMh63/aO:uf05a/CTjM89UFc9UEB68OMsx

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

45.141.26.119:1996

Mutex

wHK5NlknpAL3Lk1X

Attributes

Install_directory
%AppData%
install_file
csrss.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3048-1-0x0000000000280000-0x0000000000290000-memory.dmp	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

2592 powershell.exe
3056 powershell.exe
2500 powershell.exe
2680 powershell.exe

pid	process
2592	powershell.exe
3056	powershell.exe
2500	powershell.exe
2680	powershell.exe

Drops startup file 2 IoCs

Processes:

e5cb8c66cab6a972529a85480b9881bc.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\csrss.lnk	e5cb8c66cab6a972529a85480b9881bc.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\csrss.lnk	e5cb8c66cab6a972529a85480b9881bc.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

4 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exee5cb8c66cab6a972529a85480b9881bc.exe

pid process

2592 powershell.exe
3056 powershell.exe
2500 powershell.exe
2680 powershell.exe
3048 e5cb8c66cab6a972529a85480b9881bc.exe

flow	ioc
4	ip-api.com

pid	process
2592	powershell.exe
3056	powershell.exe
2500	powershell.exe
2680	powershell.exe
3048	e5cb8c66cab6a972529a85480b9881bc.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

e5cb8c66cab6a972529a85480b9881bc.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	3048	e5cb8c66cab6a972529a85480b9881bc.exe
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	3056	powershell.exe
Token: SeDebugPrivilege	2500	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	3048	e5cb8c66cab6a972529a85480b9881bc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

e5cb8c66cab6a972529a85480b9881bc.exe

pid process

3048 e5cb8c66cab6a972529a85480b9881bc.exe

pid	process
3048	e5cb8c66cab6a972529a85480b9881bc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

e5cb8c66cab6a972529a85480b9881bc.exe

description	pid	process	target process
PID 3048 wrote to memory of 2592	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 2592	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 2592	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 3056	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 3056	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 3056	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 2500	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 2500	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 2500	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 2680	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 2680	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe
PID 3048 wrote to memory of 2680	3048	e5cb8c66cab6a972529a85480b9881bc.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\e5cb8c66cab6a972529a85480b9881bc.exe
"C:\Users\Admin\AppData\Local\Temp\e5cb8c66cab6a972529a85480b9881bc.exe"
1⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3048
- 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\e5cb8c66cab6a972529a85480b9881bc.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2592
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'e5cb8c66cab6a972529a85480b9881bc.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3056
- 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\csrss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2500
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'csrss.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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
5842903b21bc1845110d0f5db616f74c

SHA1
bc673bfc2b7e5b62f6d4d86cf6bb9b5c8c91eacc

SHA256
40f229af871e80b911685519cf7d82fdefecd4983f8c41a05bb88bc78c66cc2b

SHA512
909a9c60a6f6cada239adae019d4819a1323326a12a4b43b8bcf198b5c5e43ba581473e5a1b457bb86b9524b7ff8796e8ad819aa4bda1a5a297a4307487b2a28

Download Submit
memory/2592-7-0x0000000002880000-0x0000000002900000-memory.dmp

Filesize
512KB

Download
memory/2592-8-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download
memory/2592-9-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/3048-0-0x000007FEF5A53000-0x000007FEF5A54000-memory.dmp

Filesize
4KB

Download
memory/3048-1-0x0000000000280000-0x0000000000290000-memory.dmp

Filesize
64KB

Download
memory/3048-2-0x000007FEF5A50000-0x000007FEF643C000-memory.dmp

Filesize
9.9MB

Download
memory/3048-31-0x000007FEF5A53000-0x000007FEF5A54000-memory.dmp

Filesize
4KB

Download
memory/3048-32-0x000007FEF5A50000-0x000007FEF643C000-memory.dmp

Filesize
9.9MB

Download
memory/3056-15-0x000000001B6C0000-0x000000001B9A2000-memory.dmp

Filesize
2.9MB

Download
memory/3056-16-0x00000000027F0000-0x00000000027F8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads