xworm | 3db2c2a470737ef9670ead53cdac6a34347a135b42a8334696216b5209de80cb

General

Target

Minecraft Checker.zip
Size

49KB
MD5

daf6a43ce1f9c897df8eb447489b8d5e
SHA1

d3496e70e86fe898094ce11d35e07082127025b6
SHA256

3db2c2a470737ef9670ead53cdac6a34347a135b42a8334696216b5209de80cb
SHA512

1880623205152d65904450e184516beb88d669f85d4880fa141b2363e34fd3be362725961ab1e1b0741ee17b358311232a7a99a33624c604521d008d88cbe9fe
SSDEEP

768:k0pY89dHb8tld9KS9kxvL7+Y+1SAoD6lNzdegt4ByPRoI/83B6S:DpY+8l9x9GL7+/17eO4BIomQQS

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:43608

percent-robot.gl.at.ply.gg:43608

Attributes

Install_directory
%AppData%
install_file
SandelloChecker.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x001900000002ab04-5.dat	family_xworm
behavioral1/memory/3644-7-0x00000000003B0000-0x00000000003CA000-memory.dmp	family_xworm

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

pid	Process
1560	powershell.exe
4892	powershell.exe
928	powershell.exe
2344	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3644	SandelloChecker.exe
5004	SandelloChecker.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4018527317-446799424-2810249686-1000\Software\Microsoft\Windows\CurrentVersion\Run\SandelloChecker = "C:\\Users\\Admin\\AppData\\Roaming\\SandelloChecker.exe"	SandelloChecker.exe

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	7zFM.exe
Key created	\REGISTRY\USER\S-1-5-21-4018527317-446799424-2810249686-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	7zFM.exe

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

pid	Process
2572	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
928	powershell.exe
928	powershell.exe
2344	powershell.exe
2344	powershell.exe
1560	powershell.exe
1560	powershell.exe
4892	powershell.exe
4892	powershell.exe
3644	SandelloChecker.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1616	7zFM.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeRestorePrivilege	1616	7zFM.exe
Token: 35	1616	7zFM.exe
Token: SeSecurityPrivilege	1616	7zFM.exe
Token: SeSecurityPrivilege	1616	7zFM.exe
Token: SeDebugPrivilege	3644	SandelloChecker.exe
Token: SeDebugPrivilege	928	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeDebugPrivilege	1560	powershell.exe
Token: SeDebugPrivilege	4892	powershell.exe
Token: SeDebugPrivilege	3644	SandelloChecker.exe
Token: SeDebugPrivilege	5004	SandelloChecker.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
1616	7zFM.exe
1616	7zFM.exe
1616	7zFM.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3644	SandelloChecker.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3644 wrote to memory of 928	3644	SandelloChecker.exe	82
PID 3644 wrote to memory of 928	3644	SandelloChecker.exe	82
PID 3644 wrote to memory of 2344	3644	SandelloChecker.exe	84
PID 3644 wrote to memory of 2344	3644	SandelloChecker.exe	84
PID 3644 wrote to memory of 1560	3644	SandelloChecker.exe	86
PID 3644 wrote to memory of 1560	3644	SandelloChecker.exe	86
PID 3644 wrote to memory of 4892	3644	SandelloChecker.exe	88
PID 3644 wrote to memory of 4892	3644	SandelloChecker.exe	88
PID 3644 wrote to memory of 2572	3644	SandelloChecker.exe	90
PID 3644 wrote to memory of 2572	3644	SandelloChecker.exe	90

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:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Minecraft Checker.zip"
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1616

C:\Users\Admin\Desktop\SandelloChecker.exe
"C:\Users\Admin\Desktop\SandelloChecker.exe"
1⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3644
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\Desktop\SandelloChecker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:928
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SandelloChecker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2344
- 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\Roaming\SandelloChecker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1560
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SandelloChecker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4892
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SandelloChecker" /tr "C:\Users\Admin\AppData\Roaming\SandelloChecker.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2572

C:\Users\Admin\Desktop\SandelloChecker.exe
"C:\Users\Admin\Desktop\SandelloChecker.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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\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
5b705b4839f481b2485f2195c589cad0

SHA1
a55866cd9e6fedf352d0e937101755ea61a50c86

SHA256
f6a3b94a63de605bbbcf1e95cb2d743166f44ea7e9d0d2bfa0e88c94c26e37c6

SHA512
f228eccd5646068a81e79baeaf7e8bfa470b30d503bf0ca8cc746c009510ab609b5c091cadf08fab1e3581900cdb7834c775c61a95a29c2d73ccd0dcbd851bab

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\Temp\__PSScriptPolicyTest_1ykcj22v.1er.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\Desktop\SandelloChecker.exe

Filesize
79KB

MD5
e20b1fb4352240c604905059b1100d06

SHA1
fa9234d4870c38384ee62785c5b8108e644f4557

SHA256
d041dc206040e8a7dd3cd40d128961d47a387afcf6561c11099cb86f4da649b8

SHA512
3a4f2db79b76b3a0d4d10f47873ea36c1b70ae0681b95c08090a5f2010d846f7938e41b5e6028117f594c51d464610eb791203b9ff00ad7f37d839a06aa98c3a

Download Submit
memory/928-9-0x0000028869030000-0x0000028869052000-memory.dmp

Filesize
136KB

Download
memory/3644-6-0x00007FF9969D3000-0x00007FF9969D5000-memory.dmp

Filesize
8KB

Download
memory/3644-7-0x00000000003B0000-0x00000000003CA000-memory.dmp

Filesize
104KB

Download
memory/3644-54-0x00007FF9969D0000-0x00007FF997492000-memory.dmp

Filesize
10.8MB

Download
memory/3644-57-0x00007FF9969D0000-0x00007FF997492000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads