xworm | ad34f6a17ee318591b59ac4fbc300c53808630e4f163b644a58eadc85057348a

Analysis

max time kernel
98s
max time network
152s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
24-01-2025 22:00

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General

Target

NetCat Loader.exe
Size

76KB
MD5

1a56b39b62cff3bf7a75a708f6a11762
SHA1

180d91a57ebb95a81bfaa394bca35c123efa916e
SHA256

ad34f6a17ee318591b59ac4fbc300c53808630e4f163b644a58eadc85057348a
SHA512

b86dfa4287e283fd7e734cc3897589c2bb6b98e35f1c82a6ab50f271baf8a9748a125a6c04425ccdf93566ddacb453290a9a63e5fc0d2797b70fb70b6dac03fb
SSDEEP

1536:JqDtM7DwroXh9bSQ6/jyrV9nmRWnXzWb6Alyj:EwblSlryrV9nmwPeyj

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

194.59.31.87:1111

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral4/files/0x000800000004569d-6.dat	family_xworm
behavioral4/memory/1444-21-0x0000000000ED0000-0x0000000000EE6000-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 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4992	powershell.exe
3872	powershell.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\Control Panel\International\Geo\Nation	NetCat Loader.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\Control Panel\International\Geo\Nation	System32.exe

Executes dropped EXE 1 IoCs

pid	Process
1444	System32.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
15	ip-api.com

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000_Classes\Local Settings	NetCat Loader.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1444	System32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4992	powershell.exe
4992	powershell.exe
3872	powershell.exe
3872	powershell.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeDebugPrivilege	1444	System32.exe
Token: SeDebugPrivilege	4992	powershell.exe
Token: SeIncreaseQuotaPrivilege	4992	powershell.exe
Token: SeSecurityPrivilege	4992	powershell.exe
Token: SeTakeOwnershipPrivilege	4992	powershell.exe
Token: SeLoadDriverPrivilege	4992	powershell.exe
Token: SeSystemProfilePrivilege	4992	powershell.exe
Token: SeSystemtimePrivilege	4992	powershell.exe
Token: SeProfSingleProcessPrivilege	4992	powershell.exe
Token: SeIncBasePriorityPrivilege	4992	powershell.exe
Token: SeCreatePagefilePrivilege	4992	powershell.exe
Token: SeBackupPrivilege	4992	powershell.exe
Token: SeRestorePrivilege	4992	powershell.exe
Token: SeShutdownPrivilege	4992	powershell.exe
Token: SeDebugPrivilege	4992	powershell.exe
Token: SeSystemEnvironmentPrivilege	4992	powershell.exe
Token: SeRemoteShutdownPrivilege	4992	powershell.exe
Token: SeUndockPrivilege	4992	powershell.exe
Token: SeManageVolumePrivilege	4992	powershell.exe
Token: 33	4992	powershell.exe
Token: 34	4992	powershell.exe
Token: 35	4992	powershell.exe
Token: 36	4992	powershell.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeIncreaseQuotaPrivilege	3872	powershell.exe
Token: SeSecurityPrivilege	3872	powershell.exe
Token: SeTakeOwnershipPrivilege	3872	powershell.exe
Token: SeLoadDriverPrivilege	3872	powershell.exe
Token: SeSystemProfilePrivilege	3872	powershell.exe
Token: SeSystemtimePrivilege	3872	powershell.exe
Token: SeProfSingleProcessPrivilege	3872	powershell.exe
Token: SeIncBasePriorityPrivilege	3872	powershell.exe
Token: SeCreatePagefilePrivilege	3872	powershell.exe
Token: SeBackupPrivilege	3872	powershell.exe
Token: SeRestorePrivilege	3872	powershell.exe
Token: SeShutdownPrivilege	3872	powershell.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeSystemEnvironmentPrivilege	3872	powershell.exe
Token: SeRemoteShutdownPrivilege	3872	powershell.exe
Token: SeUndockPrivilege	3872	powershell.exe
Token: SeManageVolumePrivilege	3872	powershell.exe
Token: 33	3872	powershell.exe
Token: 34	3872	powershell.exe
Token: 35	3872	powershell.exe
Token: 36	3872	powershell.exe
Token: SeDebugPrivilege	1444	System32.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 1444	4832	NetCat Loader.exe	82
PID 4832 wrote to memory of 1444	4832	NetCat Loader.exe	82
PID 4832 wrote to memory of 1424	4832	NetCat Loader.exe	83
PID 4832 wrote to memory of 1424	4832	NetCat Loader.exe	83
PID 1444 wrote to memory of 4992	1444	System32.exe	89
PID 1444 wrote to memory of 4992	1444	System32.exe	89
PID 1444 wrote to memory of 3872	1444	System32.exe	92
PID 1444 wrote to memory of 3872	1444	System32.exe	92

C:\Users\Admin\AppData\Local\Temp\NetCat Loader.exe
"C:\Users\Admin\AppData\Local\Temp\NetCat Loader.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Users\Admin\AppData\Roaming\System32.exe
  "C:\Users\Admin\AppData\Roaming\System32.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1444
- - 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\System32.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4992
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System32.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3872
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\Thanks For Using.txt
  2⤵
  PID:1424

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
6a807b1c91ac66f33f88a787d64904c1

SHA1
83c554c7de04a8115c9005709e5cd01fca82c5d3

SHA256
155314c1c86d8d4e5b802f1eef603c5dd4a2f7c949f069a38af5ba4959bd8256

SHA512
29f2d9f30fc081e7fe6e9fb772c810c9be0422afdc6aff5a286f49a990ededebcf0d083798c2d9f41ad8434393c6d0f5fa6df31226d9c3511ba2a41eb4a65200

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ehd5gliy.fnh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\System32.exe

Filesize
63KB

MD5
66bbe5829a613fedad7f79e2c6273448

SHA1
57314396a65e08b7bfc5f0b8cdfa9a050579d9d9

SHA256
72499a032c26ef7031b942590e4dd2e28d60b332620c7d2dc42bc4b70995e0dd

SHA512
9b0ea0bb6a4a6ae75c6463f2bc3b5bd012a40a89f491868979230b850b948240b40326c703211edd349911e97a218bf77d01d06f254c33d83939c21a152efae3

Download Submit
C:\Users\Admin\AppData\Roaming\Thanks For Using.txt

Filesize
57B

MD5
f9cfd0c4da0a9a068f8a26ee31c85036

SHA1
ea75b71cfdf7364eacfafcaac0421f9c80a2b4e5

SHA256
e52f33ee65ceb7e5fe9cd47744888c089c37ba7dbadeaf345e75b5cadd43ee2d

SHA512
f81823ed92d8f5aa299d0164f59fb77a3af4c6a9ca5a98e0d4b33104ec7f15ef19037d4bb4f3b2c8c1ca156bac2253f5052eb801468db73d71a67b10405e4b51

Download Submit
memory/1444-21-0x0000000000ED0000-0x0000000000EE6000-memory.dmp

Filesize
88KB

Download
memory/1444-25-0x00007FFA4D4B0000-0x00007FFA4DF72000-memory.dmp

Filesize
10.8MB

Download
memory/1444-23-0x00007FFA4D4B0000-0x00007FFA4DF72000-memory.dmp

Filesize
10.8MB

Download
memory/1444-50-0x00007FFA4D4B0000-0x00007FFA4DF72000-memory.dmp

Filesize
10.8MB

Download
memory/1444-51-0x00007FFA4D4B0000-0x00007FFA4DF72000-memory.dmp

Filesize
10.8MB

Download
memory/4832-0-0x00007FFA4D4B3000-0x00007FFA4D4B5000-memory.dmp

Filesize
8KB

Download
memory/4832-1-0x0000000000A00000-0x0000000000A1A000-memory.dmp

Filesize
104KB

Download
memory/4992-31-0x000001F642460000-0x000001F642482000-memory.dmp

Filesize
136KB

Download