xworm | a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

Analysis

max time kernel
146s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
30-06-2024 22:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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

behavioral4/memory/2428-0-0x0000000000BE0000-0x0000000000BF6000-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

8 powershell.exe
1508 powershell.exe
3872 powershell.exe
3900 powershell.exe

resource	yara_rule
behavioral4/memory/2428-0-0x0000000000BE0000-0x0000000000BF6000-memory.dmp	family_xworm
C:\ProgramData\svhost.exe	family_xworm

pid	process
8	powershell.exe
1508	powershell.exe
3872	powershell.exe
3900	powershell.exe

Drops startup file 2 IoCs

Processes:

sv.exe

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

Executes dropped EXE 3 IoCs

Processes:

svhost.exesvhost.exesvhost.exe

pid process

1688 svhost.exe
1256 svhost.exe
3636 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-1-5-21-1672260578-815027929-964132517-1000\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

4092 schtasks.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

8 powershell.exe
8 powershell.exe
1508 powershell.exe
1508 powershell.exe
3872 powershell.exe
3872 powershell.exe
3900 powershell.exe
3900 powershell.exe

pid	process
1688	svhost.exe
1256	svhost.exe
3636	svhost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\ProgramData\\svhost.exe"	sv.exe

pid	process
4092	schtasks.exe

pid	process
8	powershell.exe
8	powershell.exe
1508	powershell.exe
1508	powershell.exe
3872	powershell.exe
3872	powershell.exe
3900	powershell.exe
3900	powershell.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

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

description	pid	process
Token: SeDebugPrivilege	2428	sv.exe
Token: SeDebugPrivilege	8	powershell.exe
Token: SeDebugPrivilege	1508	powershell.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeDebugPrivilege	3900	powershell.exe
Token: SeDebugPrivilege	2428	sv.exe
Token: SeDebugPrivilege	1688	svhost.exe
Token: SeDebugPrivilege	1256	svhost.exe
Token: SeDebugPrivilege	3636	svhost.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

sv.exe

description	pid	process	target process
PID 2428 wrote to memory of 8	2428	sv.exe	powershell.exe
PID 2428 wrote to memory of 8	2428	sv.exe	powershell.exe
PID 2428 wrote to memory of 1508	2428	sv.exe	powershell.exe
PID 2428 wrote to memory of 1508	2428	sv.exe	powershell.exe
PID 2428 wrote to memory of 3872	2428	sv.exe	powershell.exe
PID 2428 wrote to memory of 3872	2428	sv.exe	powershell.exe
PID 2428 wrote to memory of 3900	2428	sv.exe	powershell.exe
PID 2428 wrote to memory of 3900	2428	sv.exe	powershell.exe
PID 2428 wrote to memory of 4092	2428	sv.exe	schtasks.exe
PID 2428 wrote to memory of 4092	2428	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:2428

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:8

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:1508

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:3872

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:3900

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:4092

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1688

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1256

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3636

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svhost.exe.log
Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

MD5
051a74485331f9d9f5014e58ec71566c

SHA1
4ed0256a84f2e95609a0b4d5c249bca624db8fe4

SHA256
3f67e4ba795fd89d33e9a1fe7547e297a82ae50b8f25eedc2b33a27866b28888

SHA512
1f15fd8ca727b198495ef826002c1cbcc63e98eecb2e92abff48354ae668e6c3aaf9bd3005664967ae75637bacee7e730ce36142483d08ae6a068d9ae3e0e17d

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

MD5
781da0576417bf414dc558e5a315e2be

SHA1
215451c1e370be595f1c389f587efeaa93108b4c

SHA256
41a5aef8b0bbeea2766f40a7bba2c78322379f167c610f7055ccb69e7db030fe

SHA512
24e283aa30a2903ebe154dad49b26067a45e46fec57549ad080d3b9ec3f272044efaaed3822d067837f5521262192f466c47195ffe7f75f8c7c5dcf3159ea737

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_db2xrl1q.5yg.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/8-14-0x00007FFCB83B0000-0x00007FFCB8E72000-memory.dmp

Filesize
10.8MB

Download
memory/8-17-0x00007FFCB83B0000-0x00007FFCB8E72000-memory.dmp

Filesize
10.8MB

Download
memory/8-18-0x00007FFCB83B0000-0x00007FFCB8E72000-memory.dmp

Filesize
10.8MB

Download
memory/8-13-0x00007FFCB83B0000-0x00007FFCB8E72000-memory.dmp

Filesize
10.8MB

Download
memory/8-12-0x00007FFCB83B0000-0x00007FFCB8E72000-memory.dmp

Filesize
10.8MB

Download
memory/8-11-0x00007FFCB83B0000-0x00007FFCB8E72000-memory.dmp

Filesize
10.8MB

Download
memory/8-10-0x000002051B9B0000-0x000002051B9D2000-memory.dmp

Filesize
136KB

Download
memory/2428-1-0x00007FFCB83B3000-0x00007FFCB83B5000-memory.dmp

Filesize
8KB

Download
memory/2428-54-0x00007FFCB83B0000-0x00007FFCB8E72000-memory.dmp

Filesize
10.8MB

Download
memory/2428-58-0x00007FFCB83B0000-0x00007FFCB8E72000-memory.dmp

Filesize
10.8MB

Download
memory/2428-0-0x0000000000BE0000-0x0000000000BF6000-memory.dmp

Filesize
88KB

Download