xworm | e65d7f5beb1f383e07917e867fb3b18a59a597319d152ad148b37a8924b8780d

Resubmissions

22-01-2025 17:15

250122-vs2sgaxmhk 10

22-01-2025 14:51

250122-r75k5a1nft 10

Analysis

max time kernel
99s
max time network
153s
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 14:51

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General

Target

SamsungCommisionExternal.exe
Size

63KB
MD5

6f30a565049364df3068b5bc88fd36d6
SHA1

2ca485eb96156bfc561acd69649cf3339da6c610
SHA256

e65d7f5beb1f383e07917e867fb3b18a59a597319d152ad148b37a8924b8780d
SHA512

c01edc2fe4e5ad26b9511cc0bc114221878cf961b436a091a79611ce27da69ce7cf58afdcc71d295ad25f08701b1eb16c0c298fd22fbcb69004f760ea2b89ffe
SSDEEP

1536:9VbfG3pj8mIfpubPOggHEyj26+6POhjV5yD/9:/fGZrIf0bPDgkyjnPOhp5U9

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:24707

modified-begun.gl.at.ply.gg:24707

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2644-1-0x0000000000030000-0x0000000000046000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4656	powershell.exe
4788	powershell.exe
1936	powershell.exe
992	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-1-5-21-1581648047-808845429-2272123689-1000\Control Panel\International\Geo\Nation	SamsungCommisionExternal.exe

Drops startup file 2 IoCs

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

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\Smasmug = "C:\\Users\\Admin\\AppData\\Roaming\\Smasmug"	SamsungCommisionExternal.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
12	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4656	powershell.exe
4656	powershell.exe
4788	powershell.exe
4788	powershell.exe
1936	powershell.exe
1936	powershell.exe
992	powershell.exe
992	powershell.exe
2644	SamsungCommisionExternal.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	SamsungCommisionExternal.exe
Token: SeDebugPrivilege	4656	powershell.exe
Token: SeIncreaseQuotaPrivilege	4656	powershell.exe
Token: SeSecurityPrivilege	4656	powershell.exe
Token: SeTakeOwnershipPrivilege	4656	powershell.exe
Token: SeLoadDriverPrivilege	4656	powershell.exe
Token: SeSystemProfilePrivilege	4656	powershell.exe
Token: SeSystemtimePrivilege	4656	powershell.exe
Token: SeProfSingleProcessPrivilege	4656	powershell.exe
Token: SeIncBasePriorityPrivilege	4656	powershell.exe
Token: SeCreatePagefilePrivilege	4656	powershell.exe
Token: SeBackupPrivilege	4656	powershell.exe
Token: SeRestorePrivilege	4656	powershell.exe
Token: SeShutdownPrivilege	4656	powershell.exe
Token: SeDebugPrivilege	4656	powershell.exe
Token: SeSystemEnvironmentPrivilege	4656	powershell.exe
Token: SeRemoteShutdownPrivilege	4656	powershell.exe
Token: SeUndockPrivilege	4656	powershell.exe
Token: SeManageVolumePrivilege	4656	powershell.exe
Token: 33	4656	powershell.exe
Token: 34	4656	powershell.exe
Token: 35	4656	powershell.exe
Token: 36	4656	powershell.exe
Token: SeDebugPrivilege	4788	powershell.exe
Token: SeIncreaseQuotaPrivilege	4788	powershell.exe
Token: SeSecurityPrivilege	4788	powershell.exe
Token: SeTakeOwnershipPrivilege	4788	powershell.exe
Token: SeLoadDriverPrivilege	4788	powershell.exe
Token: SeSystemProfilePrivilege	4788	powershell.exe
Token: SeSystemtimePrivilege	4788	powershell.exe
Token: SeProfSingleProcessPrivilege	4788	powershell.exe
Token: SeIncBasePriorityPrivilege	4788	powershell.exe
Token: SeCreatePagefilePrivilege	4788	powershell.exe
Token: SeBackupPrivilege	4788	powershell.exe
Token: SeRestorePrivilege	4788	powershell.exe
Token: SeShutdownPrivilege	4788	powershell.exe
Token: SeDebugPrivilege	4788	powershell.exe
Token: SeSystemEnvironmentPrivilege	4788	powershell.exe
Token: SeRemoteShutdownPrivilege	4788	powershell.exe
Token: SeUndockPrivilege	4788	powershell.exe
Token: SeManageVolumePrivilege	4788	powershell.exe
Token: 33	4788	powershell.exe
Token: 34	4788	powershell.exe
Token: 35	4788	powershell.exe
Token: 36	4788	powershell.exe
Token: SeDebugPrivilege	1936	powershell.exe
Token: SeIncreaseQuotaPrivilege	1936	powershell.exe
Token: SeSecurityPrivilege	1936	powershell.exe
Token: SeTakeOwnershipPrivilege	1936	powershell.exe
Token: SeLoadDriverPrivilege	1936	powershell.exe
Token: SeSystemProfilePrivilege	1936	powershell.exe
Token: SeSystemtimePrivilege	1936	powershell.exe
Token: SeProfSingleProcessPrivilege	1936	powershell.exe
Token: SeIncBasePriorityPrivilege	1936	powershell.exe
Token: SeCreatePagefilePrivilege	1936	powershell.exe
Token: SeBackupPrivilege	1936	powershell.exe
Token: SeRestorePrivilege	1936	powershell.exe
Token: SeShutdownPrivilege	1936	powershell.exe
Token: SeDebugPrivilege	1936	powershell.exe
Token: SeSystemEnvironmentPrivilege	1936	powershell.exe
Token: SeRemoteShutdownPrivilege	1936	powershell.exe
Token: SeUndockPrivilege	1936	powershell.exe
Token: SeManageVolumePrivilege	1936	powershell.exe
Token: 33	1936	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2644	SamsungCommisionExternal.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 4656	2644	SamsungCommisionExternal.exe	84
PID 2644 wrote to memory of 4656	2644	SamsungCommisionExternal.exe	84
PID 2644 wrote to memory of 4788	2644	SamsungCommisionExternal.exe	87
PID 2644 wrote to memory of 4788	2644	SamsungCommisionExternal.exe	87
PID 2644 wrote to memory of 1936	2644	SamsungCommisionExternal.exe	91
PID 2644 wrote to memory of 1936	2644	SamsungCommisionExternal.exe	91
PID 2644 wrote to memory of 992	2644	SamsungCommisionExternal.exe	93
PID 2644 wrote to memory of 992	2644	SamsungCommisionExternal.exe	93

C:\Users\Admin\AppData\Local\Temp\SamsungCommisionExternal.exe
"C:\Users\Admin\AppData\Local\Temp\SamsungCommisionExternal.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:2644
- 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\SamsungCommisionExternal.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4656
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SamsungCommisionExternal.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4788
- 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\Smasmug'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1936
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Smasmug'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
1KB

MD5
690c2bd2f10cc1857a717259b1bac1cb

SHA1
431d633e63f5ea8f7551a0a1e5a0fe421527fe5d

SHA256
c4bd3b662c1de00edd77cd43c3a47a68f272955f6bb4a35a1548ff0f29ed04d7

SHA512
045e3aa227b81f3f42430aee77e63efa68d7de087ddd3ae10c855a2b6c56a9144e452109ac267715615d8a12145c6072226e75f6e8f855e9aa08a8405a8a5cd5

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

Filesize
1KB

MD5
f4cba69beab6fa0de059d0a0ddc4dd87

SHA1
fb243a93ba81d097e248093800d0fc5f4fb8d8c5

SHA256
f0368bbcd56197e3274863b8f35e6c87cf7d476ba54ecd3c1fa954f82be0d7dc

SHA512
edcc61f1a8baa5a713f667fb8c139be71b258785177f2fcd067d423eb60368f5fa1c8d7fba1097a1b78fd859fa0089ce3c6963f526f025b714e66159a4673c15

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r3az4jin.3hz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2644-1-0x0000000000030000-0x0000000000046000-memory.dmp

Filesize
88KB

Download
memory/2644-2-0x00007FFFC5BD0000-0x00007FFFC6692000-memory.dmp

Filesize
10.8MB

Download
memory/2644-60-0x00007FFFC5BD0000-0x00007FFFC6692000-memory.dmp

Filesize
10.8MB

Download
memory/2644-0-0x00007FFFC5BD3000-0x00007FFFC5BD5000-memory.dmp

Filesize
8KB

Download
memory/2644-33-0x00007FFFC5BD3000-0x00007FFFC5BD5000-memory.dmp

Filesize
8KB

Download
memory/4656-4-0x00007FFFC5BD0000-0x00007FFFC6692000-memory.dmp

Filesize
10.8MB

Download
memory/4656-21-0x00007FFFC5BD0000-0x00007FFFC6692000-memory.dmp

Filesize
10.8MB

Download
memory/4656-20-0x000001BE36080000-0x000001BE3629D000-memory.dmp

Filesize
2.1MB

Download
memory/4656-17-0x00007FFFC5BD0000-0x00007FFFC6692000-memory.dmp

Filesize
10.8MB

Download
memory/4656-16-0x00007FFFC5BD0000-0x00007FFFC6692000-memory.dmp

Filesize
10.8MB

Download
memory/4656-6-0x000001BE36050000-0x000001BE36072000-memory.dmp

Filesize
136KB

Download
memory/4656-5-0x00007FFFC5BD0000-0x00007FFFC6692000-memory.dmp

Filesize
10.8MB

Download
memory/4656-3-0x00007FFFC5BD0000-0x00007FFFC6692000-memory.dmp

Filesize
10.8MB

Download