xworm | ccaf48cc722a2f0f9766cc4e83c1469e498fc67d2f8ed96942a5764d3591050e

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22-01-2025 16:19

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Analysis

max time kernel
56s
max time network
58s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
22-01-2025 16:17

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General

Target

idk.exe
Size

94KB
MD5

f88781b7415e7b04fd13b1bbbf2009b2
SHA1

df9072bf61727db083155c04b47ce48744b23ee5
SHA256

ccaf48cc722a2f0f9766cc4e83c1469e498fc67d2f8ed96942a5764d3591050e
SHA512

6c16f8287f2f14b452025be0638fb827fa6e4a3556b21119c6195bc066d577f2c1df9a8b3f500f7e56d2b33e0552c7cbec8730bd3ac14704a6250280b1aac3db
SSDEEP

1536:BItB2JRcId+cS7K/aATFcmJi1vJYbmG0VaTCVp8tA8qbQXpPQ8Qep+MDaj361dw:CyFdDSWjB0vcL0VwCz8+8qbwPtVkOg3r

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

IDKTOBEHONESTNIGAS-56344.portmap.io:56344

Attributes

Install_directory
%LocalAppData%

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral3/files/0x00060000000456b9-6.dat	family_xworm
behavioral3/memory/3812-11-0x0000000000DA0000-0x0000000000DBA000-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 3 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2416	powershell.exe
1892	powershell.exe
380	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-1-5-21-1581648047-808845429-2272123689-1000\Control Panel\International\Geo\Nation	idk.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1581648047-808845429-2272123689-1000\Control Panel\International\Geo\Nation	svchost.scr

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
3812	svchost.scr

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-1-5-21-1581648047-808845429-2272123689-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.scr"	svchost.scr

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

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
4688	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2416	powershell.exe
2416	powershell.exe
1892	powershell.exe
1892	powershell.exe
380	powershell.exe
380	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3812	svchost.scr
Token: SeDebugPrivilege	2416	powershell.exe
Token: SeIncreaseQuotaPrivilege	2416	powershell.exe
Token: SeSecurityPrivilege	2416	powershell.exe
Token: SeTakeOwnershipPrivilege	2416	powershell.exe
Token: SeLoadDriverPrivilege	2416	powershell.exe
Token: SeSystemProfilePrivilege	2416	powershell.exe
Token: SeSystemtimePrivilege	2416	powershell.exe
Token: SeProfSingleProcessPrivilege	2416	powershell.exe
Token: SeIncBasePriorityPrivilege	2416	powershell.exe
Token: SeCreatePagefilePrivilege	2416	powershell.exe
Token: SeBackupPrivilege	2416	powershell.exe
Token: SeRestorePrivilege	2416	powershell.exe
Token: SeShutdownPrivilege	2416	powershell.exe
Token: SeDebugPrivilege	2416	powershell.exe
Token: SeSystemEnvironmentPrivilege	2416	powershell.exe
Token: SeRemoteShutdownPrivilege	2416	powershell.exe
Token: SeUndockPrivilege	2416	powershell.exe
Token: SeManageVolumePrivilege	2416	powershell.exe
Token: 33	2416	powershell.exe
Token: 34	2416	powershell.exe
Token: 35	2416	powershell.exe
Token: 36	2416	powershell.exe
Token: SeDebugPrivilege	1892	powershell.exe
Token: SeIncreaseQuotaPrivilege	1892	powershell.exe
Token: SeSecurityPrivilege	1892	powershell.exe
Token: SeTakeOwnershipPrivilege	1892	powershell.exe
Token: SeLoadDriverPrivilege	1892	powershell.exe
Token: SeSystemProfilePrivilege	1892	powershell.exe
Token: SeSystemtimePrivilege	1892	powershell.exe
Token: SeProfSingleProcessPrivilege	1892	powershell.exe
Token: SeIncBasePriorityPrivilege	1892	powershell.exe
Token: SeCreatePagefilePrivilege	1892	powershell.exe
Token: SeBackupPrivilege	1892	powershell.exe
Token: SeRestorePrivilege	1892	powershell.exe
Token: SeShutdownPrivilege	1892	powershell.exe
Token: SeDebugPrivilege	1892	powershell.exe
Token: SeSystemEnvironmentPrivilege	1892	powershell.exe
Token: SeRemoteShutdownPrivilege	1892	powershell.exe
Token: SeUndockPrivilege	1892	powershell.exe
Token: SeManageVolumePrivilege	1892	powershell.exe
Token: 33	1892	powershell.exe
Token: 34	1892	powershell.exe
Token: 35	1892	powershell.exe
Token: 36	1892	powershell.exe
Token: SeDebugPrivilege	380	powershell.exe
Token: SeIncreaseQuotaPrivilege	380	powershell.exe
Token: SeSecurityPrivilege	380	powershell.exe
Token: SeTakeOwnershipPrivilege	380	powershell.exe
Token: SeLoadDriverPrivilege	380	powershell.exe
Token: SeSystemProfilePrivilege	380	powershell.exe
Token: SeSystemtimePrivilege	380	powershell.exe
Token: SeProfSingleProcessPrivilege	380	powershell.exe
Token: SeIncBasePriorityPrivilege	380	powershell.exe
Token: SeCreatePagefilePrivilege	380	powershell.exe
Token: SeBackupPrivilege	380	powershell.exe
Token: SeRestorePrivilege	380	powershell.exe
Token: SeShutdownPrivilege	380	powershell.exe
Token: SeDebugPrivilege	380	powershell.exe
Token: SeSystemEnvironmentPrivilege	380	powershell.exe
Token: SeRemoteShutdownPrivilege	380	powershell.exe
Token: SeUndockPrivilege	380	powershell.exe
Token: SeManageVolumePrivilege	380	powershell.exe
Token: 33	380	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 3812	2820	idk.exe	81
PID 2820 wrote to memory of 3812	2820	idk.exe	81
PID 3812 wrote to memory of 2416	3812	svchost.scr	87
PID 3812 wrote to memory of 2416	3812	svchost.scr	87
PID 3812 wrote to memory of 1892	3812	svchost.scr	90
PID 3812 wrote to memory of 1892	3812	svchost.scr	90
PID 3812 wrote to memory of 380	3812	svchost.scr	92
PID 3812 wrote to memory of 380	3812	svchost.scr	92
PID 3812 wrote to memory of 4688	3812	svchost.scr	95
PID 3812 wrote to memory of 4688	3812	svchost.scr	95

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\idk.exe
"C:\Users\Admin\AppData\Local\Temp\idk.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Users\Admin\AppData\Roaming\svchost.scr
  "C:\Users\Admin\AppData\Roaming\svchost.scr" /S
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3812
- - 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.scr'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2416
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.scr'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1892
- - 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\svchost.scr'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:380
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\svchost.scr"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

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
f0f59cccd39a3694e0e6dfd44d0fa76d

SHA1
fccd7911d463041e1168431df8823e4c4ea387c1

SHA256
70466c7f3a911368d653396fdd68f993322c69e1797b492ca00f8be34b7f3401

SHA512
5c726e1e28cb9c0c3ab963fbfbf471c6033839f3e535a3811581fdaa4da17175e5a8a8be84a4fccd99b81e048058e51d230ff3836e3ec920057a1b1676110bee

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

Filesize
1KB

MD5
e2844b0cc903fcf9cb8f75bbb2c74293

SHA1
61dd6066b0f4ac530680955ebdb0a85891d7e874

SHA256
b525765eef8dcc4c01eab3e0781c66ddd59526bb27d2d85bdd12555bb66e6187

SHA512
0d68c027296e019ee580e8d523f335be52dead99cd1c66331fc4c853037c271d9a50ad31eb07b6344aab9e5baae37fac868bbd0497184a8b46dd9ab30c6c6497

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0swdjmho.3rw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.scr

Filesize
79KB

MD5
0b192c8ec04f4dcd360957eb478221d2

SHA1
522a5c7336a31c23efec4b8ccab7ce7c17d620d4

SHA256
ea6a26539f74891663a03fc3cf348ef53c14295ef3662b9a29b211a8d0503e1c

SHA512
7d5dd7c9aca799a8dc15eea9bf767ca6c7e2145ad848d2b2cefb3548cffb30bbbb3e3933aac7c602e4a1b5f02e14e46b7edbcc3945e1aa2e3cc6219941e90eb6

Download Submit
memory/380-50-0x0000020318780000-0x000002031899D000-memory.dmp

Filesize
2.1MB

Download
memory/2416-19-0x000001882BE60000-0x000001882BE82000-memory.dmp

Filesize
136KB

Download
memory/2416-26-0x000001882BE90000-0x000001882C0AD000-memory.dmp

Filesize
2.1MB

Download
memory/2820-0-0x00007FFF854E3000-0x00007FFF854E5000-memory.dmp

Filesize
8KB

Download
memory/2820-1-0x0000000000480000-0x000000000049E000-memory.dmp

Filesize
120KB

Download
memory/3812-12-0x00007FFF854E0000-0x00007FFF85FA2000-memory.dmp

Filesize
10.8MB

Download
memory/3812-13-0x00007FFF854E0000-0x00007FFF85FA2000-memory.dmp

Filesize
10.8MB

Download
memory/3812-11-0x0000000000DA0000-0x0000000000DBA000-memory.dmp

Filesize
104KB

Download
memory/3812-58-0x00007FFF854E0000-0x00007FFF85FA2000-memory.dmp

Filesize
10.8MB

Download
memory/3812-59-0x00007FFF854E0000-0x00007FFF85FA2000-memory.dmp

Filesize
10.8MB

Download