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
133s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
31/08/2024, 15:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
behavioral4/memory/3000-1-0x00000000002C0000-0x00000000002DC000-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
1320	powershell.exe
2280	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	XClient.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
23	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2016	timeout.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1320	powershell.exe
1320	powershell.exe
2280	powershell.exe
2280	powershell.exe
3000	XClient.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3000	XClient.exe
Token: SeDebugPrivilege	1320	powershell.exe
Token: SeDebugPrivilege	2280	powershell.exe
Token: SeDebugPrivilege	3000	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3000	XClient.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 1320	3000	XClient.exe	88
PID 3000 wrote to memory of 1320	3000	XClient.exe	88
PID 3000 wrote to memory of 2280	3000	XClient.exe	90
PID 3000 wrote to memory of 2280	3000	XClient.exe	90
PID 3000 wrote to memory of 4128	3000	XClient.exe	101
PID 3000 wrote to memory of 4128	3000	XClient.exe	101
PID 4128 wrote to memory of 2016	4128	cmd.exe	103
PID 4128 wrote to memory of 2016	4128	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3000
- 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:1320
- 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:2280
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6126.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4128
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2016

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
2979eabc783eaca50de7be23dd4eafcf

SHA1
d709ce5f3a06b7958a67e20870bfd95b83cad2ea

SHA256
006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

SHA512
92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uay14clp.r44.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6126.tmp.bat

Filesize
159B

MD5
0138638e75087043a5e3fd8be7353525

SHA1
4d9f2de6ab996dadbbc2d7d928bb29d3c7567942

SHA256
d5ff1578935c227a325bffb4b8ca562bf3e2d6a7cc9e1fdbe2161dbefb3b9064

SHA512
c91c0b6e9066d79fd886444979f32ae9eb118cdb4e1f7984aea73f36f4f5047070a539fc5c8d0409c2e794fa802a6b0fdb2fe92ce40fcbe23fe41fb6b05d4594

Download Submit
memory/1320-3-0x00007FFF5D960000-0x00007FFF5E421000-memory.dmp

Filesize
10.8MB

Download
memory/1320-4-0x00007FFF5D960000-0x00007FFF5E421000-memory.dmp

Filesize
10.8MB

Download
memory/1320-5-0x00007FFF5D960000-0x00007FFF5E421000-memory.dmp

Filesize
10.8MB

Download
memory/1320-11-0x0000023B13AF0000-0x0000023B13B12000-memory.dmp

Filesize
136KB

Download
memory/1320-18-0x00007FFF5D960000-0x00007FFF5E421000-memory.dmp

Filesize
10.8MB

Download
memory/3000-0-0x00007FFF5D963000-0x00007FFF5D965000-memory.dmp

Filesize
8KB

Download
memory/3000-2-0x00007FFF5D960000-0x00007FFF5E421000-memory.dmp

Filesize
10.8MB

Download
memory/3000-1-0x00000000002C0000-0x00000000002DC000-memory.dmp

Filesize
112KB

Download
memory/3000-31-0x00007FFF5D963000-0x00007FFF5D965000-memory.dmp

Filesize
8KB

Download
memory/3000-32-0x00007FFF5D960000-0x00007FFF5E421000-memory.dmp

Filesize
10.8MB

Download
memory/3000-37-0x00007FFF5D960000-0x00007FFF5E421000-memory.dmp

Filesize
10.8MB

Download