xworm | a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2024 22:05

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General

Target

sv.exe
Size

63KB
MD5

c095a62b525e62244cad230e696028cf
SHA1

67232c186d3efe248b540f1f2fe3382770b5074a
SHA256

a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6
SHA512

5ba859d89a9277d9b6243f461991cc6472d001cdea52d9fcfba3cbead88fbc69d9dfce076b1fdeaf0d1cd21fe4cace54f1cefe1c352d70cc8fa2898fe1b61fb0
SSDEEP

1536:unjFXblMp3wgDkbivVSm16KTOKjLIJXc:unrAwgDkbicmbOKj0JM

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

amount-acceptance.gl.at.ply.gg:7420

Attributes

Install_directory
%ProgramData%
install_file
svhost.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource yara_rule

behavioral3/memory/4684-1-0x0000000000530000-0x0000000000546000-memory.dmp family_xworm
C:\ProgramData\svhost.exe family_xworm
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

3760 powershell.exe
2472 powershell.exe
3212 powershell.exe
3592 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

Processes:

sv.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation sv.exe

resource	yara_rule
behavioral3/memory/4684-1-0x0000000000530000-0x0000000000546000-memory.dmp	family_xworm
C:\ProgramData\svhost.exe	family_xworm

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	sv.exe

Drops startup file 2 IoCs

Processes:

sv.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	sv.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	sv.exe

Executes dropped EXE 2 IoCs

Processes:

svhost.exesvhost.exe

pid process

2676 svhost.exe
4340 svhost.exe
Adds Run key to start application 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Processes:

sv.exe

description ioc process

Set value (str) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\ProgramData\\svhost.exe" sv.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

4620 schtasks.exe

pid	process
2676	svhost.exe
4340	svhost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\ProgramData\\svhost.exe"	sv.exe

pid	process
4620	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	process
3760	powershell.exe
3760	powershell.exe
3760	powershell.exe
2472	powershell.exe
2472	powershell.exe
2472	powershell.exe
3212	powershell.exe
3212	powershell.exe
3212	powershell.exe
3592	powershell.exe
3592	powershell.exe
3592	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

sv.exepowershell.exepowershell.exepowershell.exepowershell.exesvhost.exesvhost.exe

description	pid	process
Token: SeDebugPrivilege	4684	sv.exe
Token: SeDebugPrivilege	3760	powershell.exe
Token: SeDebugPrivilege	2472	powershell.exe
Token: SeDebugPrivilege	3212	powershell.exe
Token: SeDebugPrivilege	3592	powershell.exe
Token: SeDebugPrivilege	4684	sv.exe
Token: SeDebugPrivilege	2676	svhost.exe
Token: SeDebugPrivilege	4340	svhost.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

sv.exe

description	pid	process	target process
PID 4684 wrote to memory of 3760	4684	sv.exe	powershell.exe
PID 4684 wrote to memory of 3760	4684	sv.exe	powershell.exe
PID 4684 wrote to memory of 2472	4684	sv.exe	powershell.exe
PID 4684 wrote to memory of 2472	4684	sv.exe	powershell.exe
PID 4684 wrote to memory of 3212	4684	sv.exe	powershell.exe
PID 4684 wrote to memory of 3212	4684	sv.exe	powershell.exe
PID 4684 wrote to memory of 3592	4684	sv.exe	powershell.exe
PID 4684 wrote to memory of 3592	4684	sv.exe	powershell.exe
PID 4684 wrote to memory of 4620	4684	sv.exe	schtasks.exe
PID 4684 wrote to memory of 4620	4684	sv.exe	schtasks.exe

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\sv.exe
"C:\Users\Admin\AppData\Local\Temp\sv.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4684

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\sv.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3760

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'sv.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2472

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svhost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3212

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3592

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\ProgramData\svhost.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:4620

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4360,i,16866810346450717340,3849854439116899380,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:8
1⤵
PID:3032

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2676

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4340

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\ProgramData\svhost.exe
Filesize
63KB

MD5
c095a62b525e62244cad230e696028cf

SHA1
67232c186d3efe248b540f1f2fe3382770b5074a

SHA256
a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

SHA512
5ba859d89a9277d9b6243f461991cc6472d001cdea52d9fcfba3cbead88fbc69d9dfce076b1fdeaf0d1cd21fe4cace54f1cefe1c352d70cc8fa2898fe1b61fb0

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\CLR_v4.0\UsageLogs\svhost.exe.log
Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
70e3cab31f3a60cb847e7f30aa14dd2a

SHA1
6da371b6d5612a4890fcec08b81d8142c9666092

SHA256
956925b07fb1b52f5b443617b54d4087e29ea7785eb669d327da20df1261d944

SHA512
9c317255931a711cef282cc96c72772cdb42c481fe0cbc9164472898d8e78d8073964aa28766607a53af804d9fd1fa10b4333faadc4d2d30414cf6fc9615e225

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
993af531f0b57e8128ec273731c3a8e2

SHA1
a42ea55876f4f390837dd2c95fb7ff2344b6e9e1

SHA256
fff934d70d813381536d272c5b8ac6ad70acd054267b13592da767c9bd1dda62

SHA512
bdf5970ff2ee314dc297fce5c0f44765e77acbf269cd9ad9e7448a391d5f80d66a0c5426f99bc3480851e8763413aa180b3b3b6b22ef0e86a365450cb8c334e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nqvn3yop.xol.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3760-12-0x00007FFE11A00000-0x00007FFE124C1000-memory.dmp

Filesize
10.8MB

Download
memory/3760-17-0x00007FFE11A00000-0x00007FFE124C1000-memory.dmp

Filesize
10.8MB

Download
memory/3760-14-0x00007FFE11A00000-0x00007FFE124C1000-memory.dmp

Filesize
10.8MB

Download
memory/3760-13-0x00007FFE11A00000-0x00007FFE124C1000-memory.dmp

Filesize
10.8MB

Download
memory/3760-2-0x0000021B40190000-0x0000021B401B2000-memory.dmp

Filesize
136KB

Download
memory/4684-0-0x00007FFE11A03000-0x00007FFE11A05000-memory.dmp

Filesize
8KB

Download
memory/4684-56-0x00007FFE11A00000-0x00007FFE124C1000-memory.dmp

Filesize
10.8MB

Download
memory/4684-57-0x00007FFE11A00000-0x00007FFE124C1000-memory.dmp

Filesize
10.8MB

Download
memory/4684-1-0x0000000000530000-0x0000000000546000-memory.dmp

Filesize
88KB

Download