xworm | 99bf031f23b1759702a56ccfc9425f0a063654dcc4a94d8feeb89792c82f3082

Analysis

max time kernel
118s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 13:24

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General

Target

fix.exe
Size

35KB
MD5

83bbe29b99a54bad48074efb72ce1fcc
SHA1

421deeba13130a8eebacc8c7f48f28e6fe8485f2
SHA256

99bf031f23b1759702a56ccfc9425f0a063654dcc4a94d8feeb89792c82f3082
SHA512

67fe2ac907c297cd3c4d1af7f80257b468bc4e73cab428568ea1238d41cd8c43262765a0b0d43b2accb003901a66e9e7ec162fefda2fd89040697e1e168ac27f
SSDEEP

768:ChiLce92aOrsQiUy5FyS9ZL6LOjhibold:ChkceWsQi5FT9ZL6LOjGo7

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

20.ip.gl.ply.gg:53765

Mutex

JCfj6Aifpywc6Ul9

Attributes

Install_directory
%AppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/2240-1-0x0000000001140000-0x0000000001150000-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

2396 powershell.exe
2664 powershell.exe
2484 powershell.exe
2404 powershell.exe

resource	yara_rule
behavioral1/memory/2240-1-0x0000000001140000-0x0000000001150000-memory.dmp	family_xworm

pid	process
2396	powershell.exe
2664	powershell.exe
2484	powershell.exe
2404	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

fix.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	fix.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2664 powershell.exe
2484 powershell.exe
2404 powershell.exe
2396 powershell.exe

pid	process
2664	powershell.exe
2484	powershell.exe
2404	powershell.exe
2396	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

fix.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	2240	fix.exe
Token: SeDebugPrivilege	2664	powershell.exe
Token: SeDebugPrivilege	2484	powershell.exe
Token: SeDebugPrivilege	2404	powershell.exe
Token: SeDebugPrivilege	2396	powershell.exe
Token: SeDebugPrivilege	2240	fix.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

fix.exe

description	pid	process	target process
PID 2240 wrote to memory of 2664	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2664	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2664	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2484	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2484	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2484	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2404	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2404	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2404	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2396	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2396	2240	fix.exe	powershell.exe
PID 2240 wrote to memory of 2396	2240	fix.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\fix.exe
"C:\Users\Admin\AppData\Local\Temp\fix.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2240

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\fix.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2664

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'fix.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2484

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\svchost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2404

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2396

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\H7SAO2CCBS8T4B3FVIVF.temp
Filesize
7KB

MD5
39ae93894f66039241be5390e1c22c02

SHA1
540f5359120d08ce9550fe67ddc7eb2918d14bfc

SHA256
3fbd1f1d04b8c289798de187a56bf9d0b908bf1391e4e2a71b5f6d04aed2b034

SHA512
44df21ab1857d4009ba922e6b4505c10772852998828429185caacbf75d2a765446b3b1e4a36b589e4a69f59b0ccf86448c7cd68f01515b54853d653f89e8348

Download Submit
\??\PIPE\srvsvc
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/2240-0-0x000007FEF5253000-0x000007FEF5254000-memory.dmp

Filesize
4KB

Download
memory/2240-1-0x0000000001140000-0x0000000001150000-memory.dmp

Filesize
64KB

Download
memory/2240-28-0x000000001B3C0000-0x000000001B440000-memory.dmp

Filesize
512KB

Download
memory/2240-29-0x000007FEF5253000-0x000007FEF5254000-memory.dmp

Filesize
4KB

Download
memory/2484-14-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2484-15-0x0000000001DD0000-0x0000000001DD8000-memory.dmp

Filesize
32KB

Download
memory/2664-6-0x0000000002E80000-0x0000000002F00000-memory.dmp

Filesize
512KB

Download
memory/2664-7-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2664-8-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download