xworm | a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

Analysis

max time kernel
15s
max time network
3s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 09:09

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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 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/1708-1-0x0000000000FD0000-0x0000000000FE6000-memory.dmp 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

2180 powershell.exe
2700 powershell.exe
2604 powershell.exe
2488 powershell.exe

resource	yara_rule
behavioral1/memory/1708-1-0x0000000000FD0000-0x0000000000FE6000-memory.dmp	family_xworm

pid	process
2180	powershell.exe
2700	powershell.exe
2604	powershell.exe
2488	powershell.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

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-1-5-21-3691908287-3775019229-3534252667-1000\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

2956 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2180 powershell.exe
2700 powershell.exe
2604 powershell.exe
2488 powershell.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\ProgramData\\svhost.exe"	sv.exe

pid	process
2956	schtasks.exe

pid	process
2180	powershell.exe
2700	powershell.exe
2604	powershell.exe
2488	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

sv.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1708	sv.exe
Token: SeDebugPrivilege	2180	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeDebugPrivilege	2604	powershell.exe
Token: SeDebugPrivilege	2488	powershell.exe
Token: SeDebugPrivilege	1708	sv.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

sv.exe

description	pid	process	target process
PID 1708 wrote to memory of 2180	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2180	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2180	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2700	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2700	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2700	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2604	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2604	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2604	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2488	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2488	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2488	1708	sv.exe	powershell.exe
PID 1708 wrote to memory of 2956	1708	sv.exe	schtasks.exe
PID 1708 wrote to memory of 2956	1708	sv.exe	schtasks.exe
PID 1708 wrote to memory of 2956	1708	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⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1708

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:2180

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:2700

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:2604

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:2488

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:2956

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize
7KB

MD5
3782e8cab8af02b11bb279c831c07dc0

SHA1
ca92286a3d9a9a4187f02a2d39efd2d4b65e9a05

SHA256
5ba89b7283b6f9e0b6dc150d6cef3288cd5f800fe2c858de61b2dd0a23e3682e

SHA512
c6ccecb2f7ab5e83611df7daffb7f76ab2ae05ac0c4ae7916cb53ecf0fdaa8a0989c4ecef1cb4a76bd67e18853627271f905bf67d80151d2e5af7c29f6908411

Download Submit
\??\PIPE\srvsvc
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1708-0-0x000007FEF5A73000-0x000007FEF5A74000-memory.dmp

Filesize
4KB

Download
memory/1708-1-0x0000000000FD0000-0x0000000000FE6000-memory.dmp

Filesize
88KB

Download
memory/1708-31-0x000000001B230000-0x000000001B2B0000-memory.dmp

Filesize
512KB

Download
memory/2180-6-0x0000000002880000-0x0000000002900000-memory.dmp

Filesize
512KB

Download
memory/2180-7-0x000000001B710000-0x000000001B9F2000-memory.dmp

Filesize
2.9MB

Download
memory/2180-8-0x00000000027F0000-0x00000000027F8000-memory.dmp

Filesize
32KB

Download
memory/2700-14-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2700-15-0x0000000001F30000-0x0000000001F38000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads