xworm | 60b290310f67adb0ae186b4b938ca466a6b55653b2519261fa425127f5500a1f

Resubmissions

12-09-2024 02:23

240912-cvfznswere 10

04-09-2024 00:09

240904-afvheascla 10

03-09-2024 18:57

240903-xl8csavfrb 10

03-09-2024 18:12

240903-ws828asgnm 10

Analysis

max time kernel
10s
max time network
42s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-09-2024 18:57

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General

Target

RAT/XClient.exe
Size

172KB
MD5

75ba783757c5b61bd841afa136fc3eda
SHA1

8db9cda9508471a23f9b743027fa115e01bc1fe1
SHA256

75a8719e83e4aecbe51287d7bfaf1e334fa190c7784324f24bcf61ab984de20a
SHA512

9a6cfbf4302336662527837bf60b30b458f8d438bd6e9563093d4948bf81c79d56578e965d836e90aafde553d1cdc9c6df81a254aafcfb3379fbe6405dce0ea1
SSDEEP

1536:vJcr5kCyoAp30kaF6CiJzt7UbjFdZe8e6TOAJkU7JsOpysa7iAMI:BcmNNxda6zZUbjHZe8jO6H2OpYuAf

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
XClient.exe
pastebin_url
https://pastebin.com/raw/2jTT3Lnj

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral7/memory/2052-1-0x0000000000850000-0x0000000000880000-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

pid	Process
2876	powershell.exe
2836	powershell.exe
3032	powershell.exe
1696	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
6	pastebin.com
7	pastebin.com
8	7.tcp.eu.ngrok.io

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

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 2 IoCs

pid	Process
2876	powershell.exe
2836	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2052	XClient.exe
Token: SeDebugPrivilege	2876	powershell.exe
Token: SeDebugPrivilege	2836	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2052 wrote to memory of 2876	2052	XClient.exe	30
PID 2052 wrote to memory of 2876	2052	XClient.exe	30
PID 2052 wrote to memory of 2876	2052	XClient.exe	30
PID 2052 wrote to memory of 2836	2052	XClient.exe	32
PID 2052 wrote to memory of 2836	2052	XClient.exe	32
PID 2052 wrote to memory of 2836	2052	XClient.exe	32
PID 2052 wrote to memory of 3032	2052	XClient.exe	34
PID 2052 wrote to memory of 3032	2052	XClient.exe	34
PID 2052 wrote to memory of 3032	2052	XClient.exe	34

C:\Users\Admin\AppData\Local\Temp\RAT\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\RAT\XClient.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2052
- 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\RAT\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2876
- 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:2836
- 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
  PID:3032
- 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
  PID:1696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\ADMACG4XN5XST7DVX27L.temp

Filesize
7KB

MD5
0b1634d0935398bf13856bc8e7ac8538

SHA1
b6b62e4b1fa188ea69916b4138572a03fed3850b

SHA256
74e0688727828af08b2983bbdd6dab2c00352d50da5ddfdaca552c61cc77fa7b

SHA512
f32e54991ff69a86a670609929b155f86d1f408d4161fec00bd772fe5bf1ce6b5b271ca2f5c7f943a1e1eb10496b6d333deb59242f1fd6172e525840cfc532a1

Download Submit
memory/2052-0-0x000007FEF61E3000-0x000007FEF61E4000-memory.dmp

Filesize
4KB

Download
memory/2052-1-0x0000000000850000-0x0000000000880000-memory.dmp

Filesize
192KB

Download
memory/2052-2-0x000007FEF61E0000-0x000007FEF6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/2052-26-0x000007FEF61E3000-0x000007FEF61E4000-memory.dmp

Filesize
4KB

Download
memory/2052-31-0x000007FEF61E0000-0x000007FEF6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/2836-14-0x000000001B230000-0x000000001B512000-memory.dmp

Filesize
2.9MB

Download
memory/2836-15-0x0000000002290000-0x0000000002298000-memory.dmp

Filesize
32KB

Download
memory/2876-7-0x000000001B2D0000-0x000000001B5B2000-memory.dmp

Filesize
2.9MB

Download
memory/2876-8-0x0000000002420000-0x0000000002428000-memory.dmp

Filesize
32KB

Download