xworm | 7b24d9dc380ea21160d1e5f753b4992cdc1c8ebf8071cf87f31ec7a7be55c035

Analysis

max time kernel
137s
max time network
143s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
13-11-2024 21:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

RobloxFlingV4.exe
Size

77KB
MD5

a3d8c1ce63a239eda1c0958acd5f106f
SHA1

d9b5899773d4250cfa80605bb3524a01aad462b8
SHA256

7b24d9dc380ea21160d1e5f753b4992cdc1c8ebf8071cf87f31ec7a7be55c035
SHA512

cddeaab7f3441aeaf19cdd5cd9560f42b8e6e95752584b7faa868728fb442becfb069eaade6d69c64eefcd20922f6800c136cebdd2d896fa1add896325c908ef
SSDEEP

1536:entZ0f9nRQFt8jo2r6+RRoXPGLyTsrG96HIU+bml4cfP61Ak8OvdUCUVB:669nRQFt8jNs/vTf+IU+bmo18OF1OB

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

success-olympus.gl.at.ply.gg:36156

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2688-1-0x00000000000D0000-0x00000000000EA000-memory.dmp	family_xworm
behavioral1/files/0x003000000004518d-59.dat	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
2724	powershell.exe
920	powershell.exe
100	powershell.exe
4828	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-870806430-2618236806-3023919190-1000\Control Panel\International\Geo\Nation	RobloxFlingV4.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	RobloxFlingV4.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	RobloxFlingV4.exe

Executes dropped EXE 3 IoCs

pid	Process
716	svchost
4052	svchost
3088	svchost

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-1-5-21-870806430-2618236806-3023919190-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost"	RobloxFlingV4.exe

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
4524	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
920	powershell.exe
920	powershell.exe
100	powershell.exe
100	powershell.exe
4828	powershell.exe
4828	powershell.exe
2724	powershell.exe
2724	powershell.exe
2688	RobloxFlingV4.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	RobloxFlingV4.exe
Token: SeDebugPrivilege	920	powershell.exe
Token: SeIncreaseQuotaPrivilege	920	powershell.exe
Token: SeSecurityPrivilege	920	powershell.exe
Token: SeTakeOwnershipPrivilege	920	powershell.exe
Token: SeLoadDriverPrivilege	920	powershell.exe
Token: SeSystemProfilePrivilege	920	powershell.exe
Token: SeSystemtimePrivilege	920	powershell.exe
Token: SeProfSingleProcessPrivilege	920	powershell.exe
Token: SeIncBasePriorityPrivilege	920	powershell.exe
Token: SeCreatePagefilePrivilege	920	powershell.exe
Token: SeBackupPrivilege	920	powershell.exe
Token: SeRestorePrivilege	920	powershell.exe
Token: SeShutdownPrivilege	920	powershell.exe
Token: SeDebugPrivilege	920	powershell.exe
Token: SeSystemEnvironmentPrivilege	920	powershell.exe
Token: SeRemoteShutdownPrivilege	920	powershell.exe
Token: SeUndockPrivilege	920	powershell.exe
Token: SeManageVolumePrivilege	920	powershell.exe
Token: 33	920	powershell.exe
Token: 34	920	powershell.exe
Token: 35	920	powershell.exe
Token: 36	920	powershell.exe
Token: SeDebugPrivilege	100	powershell.exe
Token: SeIncreaseQuotaPrivilege	100	powershell.exe
Token: SeSecurityPrivilege	100	powershell.exe
Token: SeTakeOwnershipPrivilege	100	powershell.exe
Token: SeLoadDriverPrivilege	100	powershell.exe
Token: SeSystemProfilePrivilege	100	powershell.exe
Token: SeSystemtimePrivilege	100	powershell.exe
Token: SeProfSingleProcessPrivilege	100	powershell.exe
Token: SeIncBasePriorityPrivilege	100	powershell.exe
Token: SeCreatePagefilePrivilege	100	powershell.exe
Token: SeBackupPrivilege	100	powershell.exe
Token: SeRestorePrivilege	100	powershell.exe
Token: SeShutdownPrivilege	100	powershell.exe
Token: SeDebugPrivilege	100	powershell.exe
Token: SeSystemEnvironmentPrivilege	100	powershell.exe
Token: SeRemoteShutdownPrivilege	100	powershell.exe
Token: SeUndockPrivilege	100	powershell.exe
Token: SeManageVolumePrivilege	100	powershell.exe
Token: 33	100	powershell.exe
Token: 34	100	powershell.exe
Token: 35	100	powershell.exe
Token: 36	100	powershell.exe
Token: SeDebugPrivilege	4828	powershell.exe
Token: SeIncreaseQuotaPrivilege	4828	powershell.exe
Token: SeSecurityPrivilege	4828	powershell.exe
Token: SeTakeOwnershipPrivilege	4828	powershell.exe
Token: SeLoadDriverPrivilege	4828	powershell.exe
Token: SeSystemProfilePrivilege	4828	powershell.exe
Token: SeSystemtimePrivilege	4828	powershell.exe
Token: SeProfSingleProcessPrivilege	4828	powershell.exe
Token: SeIncBasePriorityPrivilege	4828	powershell.exe
Token: SeCreatePagefilePrivilege	4828	powershell.exe
Token: SeBackupPrivilege	4828	powershell.exe
Token: SeRestorePrivilege	4828	powershell.exe
Token: SeShutdownPrivilege	4828	powershell.exe
Token: SeDebugPrivilege	4828	powershell.exe
Token: SeSystemEnvironmentPrivilege	4828	powershell.exe
Token: SeRemoteShutdownPrivilege	4828	powershell.exe
Token: SeUndockPrivilege	4828	powershell.exe
Token: SeManageVolumePrivilege	4828	powershell.exe
Token: 33	4828	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2688	RobloxFlingV4.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 920	2688	RobloxFlingV4.exe	83
PID 2688 wrote to memory of 920	2688	RobloxFlingV4.exe	83
PID 2688 wrote to memory of 100	2688	RobloxFlingV4.exe	89
PID 2688 wrote to memory of 100	2688	RobloxFlingV4.exe	89
PID 2688 wrote to memory of 4828	2688	RobloxFlingV4.exe	92
PID 2688 wrote to memory of 4828	2688	RobloxFlingV4.exe	92
PID 2688 wrote to memory of 2724	2688	RobloxFlingV4.exe	94
PID 2688 wrote to memory of 2724	2688	RobloxFlingV4.exe	94
PID 2688 wrote to memory of 4524	2688	RobloxFlingV4.exe	97
PID 2688 wrote to memory of 4524	2688	RobloxFlingV4.exe	97

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\RobloxFlingV4.exe
"C:\Users\Admin\AppData\Local\Temp\RobloxFlingV4.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2688
- 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\RobloxFlingV4.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:920
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RobloxFlingV4.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:100
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4828
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:2724
- 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\Roaming\svchost"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4524

C:\Users\Admin\AppData\Roaming\svchost
"C:\Users\Admin\AppData\Roaming\svchost"
1⤵
- Executes dropped EXE
PID:716

C:\Users\Admin\AppData\Roaming\svchost
"C:\Users\Admin\AppData\Roaming\svchost"
1⤵
- Executes dropped EXE
PID:4052

C:\Users\Admin\AppData\Roaming\svchost
"C:\Users\Admin\AppData\Roaming\svchost"
1⤵
- Executes dropped EXE
PID:3088

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

Replay Monitor

Loading Replay Monitor...

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\CLR_v4.0\UsageLogs\svchost.log

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

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

Filesize
1KB

MD5
c67441dfa09f61bca500bb43407c56b8

SHA1
5a56cf7cbeb48c109e2128c31b681fac3959157b

SHA256
63082da456c124d0bc516d2161d1613db5f3008d903e4066d2c7b4e90b435f33

SHA512
325de8b718b3a01df05e20e028c5882240e5fd2e96c771361b776312923ff178f27494a1f5249bf6d7365a99155eb8735a51366e85597008e6a10462e63ee0e8

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

Filesize
1KB

MD5
a70a24512295469541923bdf3adbfa19

SHA1
832d221a859448924b19ee2aabfb4869d9a343aa

SHA256
de2d90585d73d8704bf9d384c85421b9858c2f76485d5abeb8720d6c265d9d85

SHA512
261666a0f816598b4a70d5c925fa5ace56d3ddc9def87df9604e42b36f826d5c9b587b07d3c61842a7b3a84c212db8b46450c09e4d77e3f2a996af15c4c8b2fa

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

Filesize
1KB

MD5
33287e49f6eaba2d1ef2051051f82854

SHA1
bebd7e3e83e10f3fad883a509ecc1e4f3c3d38a5

SHA256
77e1b16217bb47355474c6a65af74aa0d933e6842840c0cb1674818e21b27792

SHA512
c068f2c5051ba3c3b240ff4436c281754a9765adb2a80b0c6347a84ddfe0839ee937b736ea3979ba5724cfe17055fc501f0e3127e89052b883b889eb3318eb9c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ckvq2m2r.uhq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
77KB

MD5
a3d8c1ce63a239eda1c0958acd5f106f

SHA1
d9b5899773d4250cfa80605bb3524a01aad462b8

SHA256
7b24d9dc380ea21160d1e5f753b4992cdc1c8ebf8071cf87f31ec7a7be55c035

SHA512
cddeaab7f3441aeaf19cdd5cd9560f42b8e6e95752584b7faa868728fb442becfb069eaade6d69c64eefcd20922f6800c136cebdd2d896fa1add896325c908ef

Download Submit
memory/920-12-0x00007FFDB8C10000-0x00007FFDB96D2000-memory.dmp

Filesize
10.8MB

Download
memory/920-16-0x00007FFDB8C10000-0x00007FFDB96D2000-memory.dmp

Filesize
10.8MB

Download
memory/920-19-0x00007FFDB8C10000-0x00007FFDB96D2000-memory.dmp

Filesize
10.8MB

Download
memory/920-15-0x00007FFDB8C10000-0x00007FFDB96D2000-memory.dmp

Filesize
10.8MB

Download
memory/920-14-0x00007FFDB8C10000-0x00007FFDB96D2000-memory.dmp

Filesize
10.8MB

Download
memory/920-13-0x00007FFDB8C10000-0x00007FFDB96D2000-memory.dmp

Filesize
10.8MB

Download
memory/920-11-0x000001B060290000-0x000001B0602B2000-memory.dmp

Filesize
136KB

Download
memory/2688-0-0x00007FFDB8C13000-0x00007FFDB8C15000-memory.dmp

Filesize
8KB

Download
memory/2688-53-0x00007FFDB8C13000-0x00007FFDB8C15000-memory.dmp

Filesize
8KB

Download
memory/2688-58-0x00007FFDB8C10000-0x00007FFDB96D2000-memory.dmp

Filesize
10.8MB

Download
memory/2688-62-0x00007FFDB8C10000-0x00007FFDB96D2000-memory.dmp

Filesize
10.8MB

Download
memory/2688-1-0x00000000000D0000-0x00000000000EA000-memory.dmp

Filesize
104KB

Download