xworm | bcd98496e76c128871952de7d7daa0b8930b0430d6553e77ce72508ff418bb19

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2023 19:44

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General

Target

$RVULAPD.exe
Size

93KB
MD5

7865912339245d7e4970eb1a27fabc2c
SHA1

dd584c401e2b21296d4f3167cf070024c71f640c
SHA256

bcd98496e76c128871952de7d7daa0b8930b0430d6553e77ce72508ff418bb19
SHA512

1d688a0ee969695f765794b8f864078c68a4ded7ab6a081e19d5040530bef210d989df772068d9f5291ac9093ac4cc73341e0582fca0a69435f1fe3d7f33504d
SSDEEP

1536:aYP0rsKtfimtQz5/Ae2G6WE0OsaTbWQw7T+fxSG6RsaSSuOLygpNw1PbVy:1P0rs4zyz54e2LF/TbWQw6xSiaSpOLyU

Score

10^/10

xworm evasion persistence rat trojan

Malware Config

Extracted

Family

xworm

tr3.localto.net:42425:52773

16.ip.gl.ply.gg:52773

Attributes

Install_directory
%LocalAppData%
install_file
InvidiaDriver.exe

Signatures

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

Processes:

resource	yara_rule
behavioral2/memory/4172-98-0x000000001A600000-0x000000001A60E000-memory.dmp	disable_win_def

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4172-0-0x0000000000130000-0x000000000014E000-memory.dmp	family_xworm
behavioral2/files/0x000d00000002313b-72.dat	family_xworm

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

Processes:

$RVULAPD.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	$RVULAPD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	$RVULAPD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	$RVULAPD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	$RVULAPD.exe

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

Processes:

$RVULAPD.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	$RVULAPD.exe

Drops startup file 2 IoCs

Processes:

$RVULAPD.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\InvidiaDriver.lnk	$RVULAPD.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\InvidiaDriver.lnk	$RVULAPD.exe

Executes dropped EXE 3 IoCs

Processes:

InvidiaDriver.exeInvidiaDriver.exengrok.exe

pid	Process
3208	InvidiaDriver.exe
460	InvidiaDriver.exe
4844	ngrok.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

$RVULAPD.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\InvidiaDriver = "C:\\Users\\Admin\\AppData\\Local\\InvidiaDriver.exe"	$RVULAPD.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.

Processes:

flow	ioc
30	ip-api.com

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

Processes:

schtasks.exe

pid	Process
3576	schtasks.exe

Kills process with taskkill 1 IoCs

evasion

Processes:

taskkill.exe

pid	Process
3560	taskkill.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe$RVULAPD.exengrok.exepowershell.exe

pid	Process
8	powershell.exe
8	powershell.exe
1020	powershell.exe
1020	powershell.exe
1072	powershell.exe
1072	powershell.exe
1516	powershell.exe
1516	powershell.exe
4172	$RVULAPD.exe
4844	ngrok.exe
4844	ngrok.exe
4844	ngrok.exe
4844	ngrok.exe
2216	powershell.exe
2216	powershell.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

$RVULAPD.exepowershell.exepowershell.exepowershell.exepowershell.exeInvidiaDriver.exeInvidiaDriver.exetaskkill.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	4172	$RVULAPD.exe
Token: SeDebugPrivilege	8	powershell.exe
Token: SeDebugPrivilege	1020	powershell.exe
Token: SeDebugPrivilege	1072	powershell.exe
Token: SeDebugPrivilege	1516	powershell.exe
Token: SeDebugPrivilege	4172	$RVULAPD.exe
Token: SeDebugPrivilege	3208	InvidiaDriver.exe
Token: SeDebugPrivilege	460	InvidiaDriver.exe
Token: SeDebugPrivilege	3560	taskkill.exe
Token: SeDebugPrivilege	2216	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

$RVULAPD.exe

pid	Process
4172	$RVULAPD.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

$RVULAPD.exe

description	pid	Process	procid_target
PID 4172 wrote to memory of 8	4172	$RVULAPD.exe	91
PID 4172 wrote to memory of 8	4172	$RVULAPD.exe	91
PID 4172 wrote to memory of 1020	4172	$RVULAPD.exe	93
PID 4172 wrote to memory of 1020	4172	$RVULAPD.exe	93
PID 4172 wrote to memory of 1072	4172	$RVULAPD.exe	95
PID 4172 wrote to memory of 1072	4172	$RVULAPD.exe	95
PID 4172 wrote to memory of 1516	4172	$RVULAPD.exe	97
PID 4172 wrote to memory of 1516	4172	$RVULAPD.exe	97
PID 4172 wrote to memory of 3576	4172	$RVULAPD.exe	99
PID 4172 wrote to memory of 3576	4172	$RVULAPD.exe	99
PID 4172 wrote to memory of 3560	4172	$RVULAPD.exe	107
PID 4172 wrote to memory of 3560	4172	$RVULAPD.exe	107
PID 4172 wrote to memory of 4844	4172	$RVULAPD.exe	108
PID 4172 wrote to memory of 4844	4172	$RVULAPD.exe	108
PID 4172 wrote to memory of 4844	4172	$RVULAPD.exe	108
PID 4172 wrote to memory of 2216	4172	$RVULAPD.exe	110
PID 4172 wrote to memory of 2216	4172	$RVULAPD.exe	110

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:\Users\Admin\AppData\Local\Temp\$RVULAPD.exe
"C:\Users\Admin\AppData\Local\Temp\$RVULAPD.exe"
1⤵
- Modifies Windows Defender Real-time Protection settings
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4172
- 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\$RVULAPD.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:8
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '$RVULAPD.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1020
- 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\InvidiaDriver.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1072
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'InvidiaDriver.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1516
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "InvidiaDriver" /tr "C:\Users\Admin\AppData\Local\InvidiaDriver.exe"
  2⤵
  - Creates scheduled task(s)
  PID:3576
- C:\Windows\System32\taskkill.exe
  "C:\Windows\System32\taskkill.exe" /im ngrok.exe /f
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:3560
- C:\Users\Admin\AppData\Local\Temp\ngrok.exe
  C:\Users\Admin\AppData\Local\Temp\ngrok.exe config add-authtoken Your_Authtoken
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:4844
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2216

C:\Users\Admin\AppData\Local\InvidiaDriver.exe
C:\Users\Admin\AppData\Local\InvidiaDriver.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3208

C:\Users\Admin\AppData\Local\InvidiaDriver.exe
C:\Users\Admin\AppData\Local\InvidiaDriver.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

C:\Users\Admin\AppData\Local\InvidiaDriver.exe

Filesize
93KB

MD5
7865912339245d7e4970eb1a27fabc2c

SHA1
dd584c401e2b21296d4f3167cf070024c71f640c

SHA256
bcd98496e76c128871952de7d7daa0b8930b0430d6553e77ce72508ff418bb19

SHA512
1d688a0ee969695f765794b8f864078c68a4ded7ab6a081e19d5040530bef210d989df772068d9f5291ac9093ac4cc73341e0582fca0a69435f1fe3d7f33504d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\InvidiaDriver.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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
4dd6d3175af8dc4012b3858534e77e85

SHA1
9ab92757463109c5759474231a56730cbff45511

SHA256
8ae5ff7674655515b7e8038753fb7ad41f872a7b51f1b659537c57c431dcf06d

SHA512
165d2d29a4931608c118c940fef262b95c43f9d653402131f5ce3205d55e46c6a542a5a3b3f330933b063fb0c741f45975c2040bda7a599d95e9353040be19c8

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

Filesize
944B

MD5
ecceac16628651c18879d836acfcb062

SHA1
420502b3e5220a01586c59504e94aa1ee11982c9

SHA256
58238de09a8817ed9f894ed8e5bf06a897fd08e0b0bd77e508d37b2598edd2a9

SHA512
be3c7cb529cafb00f58790a6f8b35c4ff6db9f7f43a507d2218fd80cebc88413e46f71b1bc35b8afcc36b68f9409c946470d1e74a4fe225400eeb6f3f898f5b3

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

Filesize
944B

MD5
a9293ef980c925abe33d940554ed8575

SHA1
9b6d85f2595f7fd4923f52b21ab7607279066969

SHA256
8313a191aa9d11cce868d95ac9a9b1609275bfe93131fcb6e547b985b0242fbe

SHA512
2003d90bb2bc89378ccaeb9c5edf76b2dfd93c80369d063e56141abb8d7fea6acee6a103874ab227bc1548437269c8e4ee5174bf482ecf3d66c38f3e0ba35d85

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

Filesize
944B

MD5
7a451cd1316d70a65910773fee8c3a43

SHA1
d2db32d5037153dd1d94565b51b5b385817a3c3d

SHA256
862d25ed22075f3d1f5e8d29a3c6e050dc91e53a4dc653c3f0f7c627a12ee26c

SHA512
60887f795036fbd6d25234c17dab4463a8a02f576ae8c07dd7b4c4ff1dba35f99b7301139ea051a7a80fdfc9e003a2f0c2dd0d444a82ecf87a3df21507332aa6

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hpyfuwna.h2w.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\ngrok.exe

Filesize
16.4MB

MD5
ee2397b5f70e81dd97a4076ba1cb1d3a

SHA1
8350f648ebd269b4bca720b4143dd3edcdfafa8f

SHA256
b5b1454e2e3a66edf3bde92b29a4f4b324fa3c3d88dc28e378c22cb42237cc67

SHA512
57fc76393881c504ac4c37a8ea812a7e21f2bed4ffa4de42a2e6e4558a78bba679ec0f8fcdc39798306c3a97e424fb875680b7f78ac07be3f7f58df093575562

Download Submit
memory/8-16-0x00000201BEA70000-0x00000201BEA80000-memory.dmp

Filesize
64KB

Download
memory/8-19-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/8-10-0x00000201BEA70000-0x00000201BEA80000-memory.dmp

Filesize
64KB

Download
memory/8-11-0x00000201BE9C0000-0x00000201BE9E2000-memory.dmp

Filesize
136KB

Download
memory/8-4-0x00000201BEA70000-0x00000201BEA80000-memory.dmp

Filesize
64KB

Download
memory/8-3-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/460-83-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/460-81-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/1020-21-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/1020-35-0x0000016FFE4B0000-0x0000016FFE4C0000-memory.dmp

Filesize
64KB

Download
memory/1020-22-0x0000016FFE4B0000-0x0000016FFE4C0000-memory.dmp

Filesize
64KB

Download
memory/1020-28-0x0000016FFE4B0000-0x0000016FFE4C0000-memory.dmp

Filesize
64KB

Download
memory/1020-37-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/1072-51-0x0000016B7CD10000-0x0000016B7CD20000-memory.dmp

Filesize
64KB

Download
memory/1072-53-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/1072-38-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/1072-40-0x0000016B7CD10000-0x0000016B7CD20000-memory.dmp

Filesize
64KB

Download
memory/1072-39-0x0000016B7CD10000-0x0000016B7CD20000-memory.dmp

Filesize
64KB

Download
memory/1516-54-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/1516-55-0x000002029CFD0000-0x000002029CFE0000-memory.dmp

Filesize
64KB

Download
memory/1516-67-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/2216-104-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/2216-113-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/2216-111-0x0000023CFB7B0000-0x0000023CFB7C0000-memory.dmp

Filesize
64KB

Download
memory/2216-105-0x0000023CFB7B0000-0x0000023CFB7C0000-memory.dmp

Filesize
64KB

Download
memory/3208-76-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/3208-74-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/4172-0-0x0000000000130000-0x000000000014E000-memory.dmp

Filesize
120KB

Download
memory/4172-84-0x000000001D060000-0x000000001D072000-memory.dmp

Filesize
72KB

Download
memory/4172-85-0x000000001DBA0000-0x000000001E2AC000-memory.dmp

Filesize
7.0MB

Download
memory/4172-2-0x000000001B060000-0x000000001B070000-memory.dmp

Filesize
64KB

Download
memory/4172-98-0x000000001A600000-0x000000001A60E000-memory.dmp

Filesize
56KB

Download
memory/4172-82-0x000000001D9E0000-0x000000001DB9A000-memory.dmp

Filesize
1.7MB

Download
memory/4172-78-0x0000000000910000-0x000000000091A000-memory.dmp

Filesize
40KB

Download
memory/4172-1-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download
memory/4172-29-0x00007FF92A3D0000-0x00007FF92AE91000-memory.dmp

Filesize
10.8MB

Download