xworm | 28041fc75ea0dd89b4cfa6338ff7dd3ef053bf5e49eca14f6d8e4acc003c9c6b

Resubmissions

02-09-2024 04:11

240902-erx5ws1ekl 10

31-08-2024 15:44

240831-s6y8dssajf 10

31-08-2024 15:41

240831-s4ytva1gph 10

31-08-2024 15:35

240831-s1fh4a1fjk 10

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
02-09-2024 04:11

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General

Target

XClient.exe
Size

84KB
MD5

13f12b20731a141144d59aef56828f78
SHA1

2aef63a0f584914b022ea7d039bd431fa99520b3
SHA256

28041fc75ea0dd89b4cfa6338ff7dd3ef053bf5e49eca14f6d8e4acc003c9c6b
SHA512

19f9aeb3ceed2cd0ab93e0f449174de9f07afba41f38c620a1480b052c18ce898d52b9c90f3cfe83611064b4b6cf7444041a4b1d52de214811436975802bcbaa
SSDEEP

1536:E4VFkamGxes+ESPmWnz5fH0hgThsipZR8beJKNlG8V6f7/7zOD5gfRJoBP:E4VNxedPmWt04/UbeSly7/vOD5c4V

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

178.215.236.68:7000

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2108-1-0x0000000000B50000-0x0000000000B6C000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2932	powershell.exe
2828	powershell.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.

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 3 IoCs

pid	Process
2932	powershell.exe
2828	powershell.exe
2108	XClient.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2108	XClient.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	2828	powershell.exe
Token: SeDebugPrivilege	2108	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2108	XClient.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2932	2108	XClient.exe	31
PID 2108 wrote to memory of 2932	2108	XClient.exe	31
PID 2108 wrote to memory of 2932	2108	XClient.exe	31
PID 2108 wrote to memory of 2828	2108	XClient.exe	33
PID 2108 wrote to memory of 2828	2108	XClient.exe	33
PID 2108 wrote to memory of 2828	2108	XClient.exe	33

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2108
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2932
- 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:2828

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

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
ef6984b2bde4765189f103aaefa41714

SHA1
a8e4913b84787e8423b50fa6d49af5cc4a520270

SHA256
fc1f32d0ab3745e2381e83fcafe4cd4cc403f78e9d38315c8333c8ec0fb25cbf

SHA512
77e850171b45beabe25568dbe684be26bc882eaa0bf271a4df8f83881c550d0f056f69c16094da849feac4185c3dc5036b9eb7467e4539e0bcfc402d6e620740

Download Submit
memory/2108-0-0x000007FEF5743000-0x000007FEF5744000-memory.dmp

Filesize
4KB

Download
memory/2108-1-0x0000000000B50000-0x0000000000B6C000-memory.dmp

Filesize
112KB

Download
memory/2108-2-0x000007FEF5740000-0x000007FEF612C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-17-0x000007FEF5743000-0x000007FEF5744000-memory.dmp

Filesize
4KB

Download
memory/2108-18-0x000007FEF5740000-0x000007FEF612C000-memory.dmp

Filesize
9.9MB

Download
memory/2828-15-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2828-16-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2932-7-0x0000000002CD0000-0x0000000002D50000-memory.dmp

Filesize
512KB

Download
memory/2932-8-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download
memory/2932-9-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download