xworm | 99bf031f23b1759702a56ccfc9425f0a063654dcc4a94d8feeb89792c82f3082

Analysis

max time kernel
133s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 12:52

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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

behavioral2/memory/1436-1-0x0000000000FA0000-0x0000000000FB0000-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

3756 powershell.exe
1420 powershell.exe
3544 powershell.exe
2244 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:

fix.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation fix.exe

resource	yara_rule
behavioral2/memory/1436-1-0x0000000000FA0000-0x0000000000FB0000-memory.dmp	family_xworm

pid	process
3756	powershell.exe
1420	powershell.exe
3544	powershell.exe
2244	powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	fix.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-1-5-21-4204450073-1267028356-951339405-1000\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 8 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

3544 powershell.exe
3544 powershell.exe
2244 powershell.exe
2244 powershell.exe
3756 powershell.exe
3756 powershell.exe
1420 powershell.exe
1420 powershell.exe

pid	process
3544	powershell.exe
3544	powershell.exe
2244	powershell.exe
2244	powershell.exe
3756	powershell.exe
3756	powershell.exe
1420	powershell.exe
1420	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

fix.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1436	fix.exe
Token: SeDebugPrivilege	3544	powershell.exe
Token: SeDebugPrivilege	2244	powershell.exe
Token: SeDebugPrivilege	3756	powershell.exe
Token: SeDebugPrivilege	1420	powershell.exe
Token: SeDebugPrivilege	1436	fix.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

fix.exe

description	pid	process	target process
PID 1436 wrote to memory of 3544	1436	fix.exe	powershell.exe
PID 1436 wrote to memory of 3544	1436	fix.exe	powershell.exe
PID 1436 wrote to memory of 2244	1436	fix.exe	powershell.exe
PID 1436 wrote to memory of 2244	1436	fix.exe	powershell.exe
PID 1436 wrote to memory of 3756	1436	fix.exe	powershell.exe
PID 1436 wrote to memory of 3756	1436	fix.exe	powershell.exe
PID 1436 wrote to memory of 1420	1436	fix.exe	powershell.exe
PID 1436 wrote to memory of 1420	1436	fix.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\fix.exe
"C:\Users\Admin\AppData\Local\Temp\fix.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1436

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:3544

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:2244

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:3756

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:1420

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

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\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

MD5
67e8893616f805af2411e2f4a1411b2a

SHA1
39bf1e1a0ddf46ce7c136972120f512d92827dcd

SHA256
ca0dfe104c1bf27f7e01999fcdabc16c6400c3da937c832c26bdbca322381d31

SHA512
164e911a9935e75c8be1a6ec3d31199a16ba2a1064da6c09d771b2a38dd7fddd142301ef55d67d90f306d3a454a1ce7b72e129ea42e44500b9b8c623a8d98b4d

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

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2wx5lwlq.vbl.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1436-1-0x0000000000FA0000-0x0000000000FB0000-memory.dmp

Filesize
64KB

Download
memory/1436-0-0x00007FFF9AFE3000-0x00007FFF9AFE5000-memory.dmp

Filesize
8KB

Download
memory/1436-55-0x00000000017C0000-0x00000000017CA000-memory.dmp

Filesize
40KB

Download
memory/1436-54-0x00007FFF9AFE0000-0x00007FFF9BAA1000-memory.dmp

Filesize
10.8MB

Download
memory/1436-53-0x00007FFF9AFE0000-0x00007FFF9BAA1000-memory.dmp

Filesize
10.8MB

Download
memory/3544-11-0x0000016A83BF0000-0x0000016A83C12000-memory.dmp

Filesize
136KB

Download
memory/3544-17-0x00007FFF9AFE0000-0x00007FFF9BAA1000-memory.dmp

Filesize
10.8MB

Download
memory/3544-14-0x00007FFF9AFE0000-0x00007FFF9BAA1000-memory.dmp

Filesize
10.8MB

Download
memory/3544-13-0x00007FFF9AFE0000-0x00007FFF9BAA1000-memory.dmp

Filesize
10.8MB

Download
memory/3544-12-0x00007FFF9AFE0000-0x00007FFF9BAA1000-memory.dmp

Filesize
10.8MB

Download