xworm | 24969dc7438810f78b7c98da7542d9925a7f1e327b54eafb475d20fbf47b8ade

Analysis

max time kernel
30s
max time network
34s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
19-11-2024 15:42

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General

Target

Loader.exe
Size

29.3MB
MD5

54fb546b537e9e4efe685d60565b3008
SHA1

81cb60b39b7a4c6abb5004b90351dbb23f80da58
SHA256

24969dc7438810f78b7c98da7542d9925a7f1e327b54eafb475d20fbf47b8ade
SHA512

4e220910c66b9f131f655884cee2fef239e4872242de09ff5de6bde9a50ccd3b448a6c7578e7c3cbfea851f97f236937f11005a5642bf1222b01fa74699f166a
SSDEEP

786432:RutirSLniIrHESgG8VGC76nNLOnx+F5GjMgbeoOmW0uEpT:Rut2SuWHHgGCQN6nxOsjMvhmW0uEpT

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

45.141.27.248:7777

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0028000000045048-16.dat	family_xworm
behavioral1/memory/864-27-0x0000000000660000-0x0000000000678000-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
4728	powershell.exe
3484	powershell.exe
1624	powershell.exe
1260	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-1-5-21-87863914-780023816-688321450-1000\Control Panel\International\Geo\Nation	Loader.exe
Key value queried	\REGISTRY\USER\S-1-5-21-87863914-780023816-688321450-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2664	loader.exe
864	svchost.exe
2396	svchost.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-1-5-21-87863914-780023816-688321450-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	svchost.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
16	ip-api.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2664	loader.exe
2664	loader.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
1704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4728	powershell.exe
4728	powershell.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe
2664	loader.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	864	svchost.exe
Token: SeDebugPrivilege	4728	powershell.exe
Token: SeIncreaseQuotaPrivilege	4728	powershell.exe
Token: SeSecurityPrivilege	4728	powershell.exe
Token: SeTakeOwnershipPrivilege	4728	powershell.exe
Token: SeLoadDriverPrivilege	4728	powershell.exe
Token: SeSystemProfilePrivilege	4728	powershell.exe
Token: SeSystemtimePrivilege	4728	powershell.exe
Token: SeProfSingleProcessPrivilege	4728	powershell.exe
Token: SeIncBasePriorityPrivilege	4728	powershell.exe
Token: SeCreatePagefilePrivilege	4728	powershell.exe
Token: SeBackupPrivilege	4728	powershell.exe
Token: SeRestorePrivilege	4728	powershell.exe
Token: SeShutdownPrivilege	4728	powershell.exe
Token: SeDebugPrivilege	4728	powershell.exe
Token: SeSystemEnvironmentPrivilege	4728	powershell.exe
Token: SeRemoteShutdownPrivilege	4728	powershell.exe
Token: SeUndockPrivilege	4728	powershell.exe
Token: SeManageVolumePrivilege	4728	powershell.exe
Token: 33	4728	powershell.exe
Token: 34	4728	powershell.exe
Token: 35	4728	powershell.exe
Token: 36	4728	powershell.exe
Token: SeDebugPrivilege	3484	powershell.exe
Token: SeIncreaseQuotaPrivilege	3484	powershell.exe
Token: SeSecurityPrivilege	3484	powershell.exe
Token: SeTakeOwnershipPrivilege	3484	powershell.exe
Token: SeLoadDriverPrivilege	3484	powershell.exe
Token: SeSystemProfilePrivilege	3484	powershell.exe
Token: SeSystemtimePrivilege	3484	powershell.exe
Token: SeProfSingleProcessPrivilege	3484	powershell.exe
Token: SeIncBasePriorityPrivilege	3484	powershell.exe
Token: SeCreatePagefilePrivilege	3484	powershell.exe
Token: SeBackupPrivilege	3484	powershell.exe
Token: SeRestorePrivilege	3484	powershell.exe
Token: SeShutdownPrivilege	3484	powershell.exe
Token: SeDebugPrivilege	3484	powershell.exe
Token: SeSystemEnvironmentPrivilege	3484	powershell.exe
Token: SeRemoteShutdownPrivilege	3484	powershell.exe
Token: SeUndockPrivilege	3484	powershell.exe
Token: SeManageVolumePrivilege	3484	powershell.exe
Token: 33	3484	powershell.exe
Token: 34	3484	powershell.exe
Token: 35	3484	powershell.exe
Token: 36	3484	powershell.exe
Token: SeDebugPrivilege	1624	powershell.exe
Token: SeIncreaseQuotaPrivilege	1624	powershell.exe
Token: SeSecurityPrivilege	1624	powershell.exe
Token: SeTakeOwnershipPrivilege	1624	powershell.exe
Token: SeLoadDriverPrivilege	1624	powershell.exe
Token: SeSystemProfilePrivilege	1624	powershell.exe
Token: SeSystemtimePrivilege	1624	powershell.exe
Token: SeProfSingleProcessPrivilege	1624	powershell.exe
Token: SeIncBasePriorityPrivilege	1624	powershell.exe
Token: SeCreatePagefilePrivilege	1624	powershell.exe
Token: SeBackupPrivilege	1624	powershell.exe
Token: SeRestorePrivilege	1624	powershell.exe
Token: SeShutdownPrivilege	1624	powershell.exe
Token: SeDebugPrivilege	1624	powershell.exe
Token: SeSystemEnvironmentPrivilege	1624	powershell.exe
Token: SeRemoteShutdownPrivilege	1624	powershell.exe
Token: SeUndockPrivilege	1624	powershell.exe
Token: SeManageVolumePrivilege	1624	powershell.exe
Token: 33	1624	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
864	svchost.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 2664	3532	Loader.exe	85
PID 3532 wrote to memory of 2664	3532	Loader.exe	85
PID 3532 wrote to memory of 864	3532	Loader.exe	87
PID 3532 wrote to memory of 864	3532	Loader.exe	87
PID 864 wrote to memory of 4728	864	svchost.exe	92
PID 864 wrote to memory of 4728	864	svchost.exe	92
PID 2664 wrote to memory of 1136	2664	loader.exe	94
PID 2664 wrote to memory of 1136	2664	loader.exe	94
PID 1136 wrote to memory of 1544	1136	cmd.exe	95
PID 1136 wrote to memory of 1544	1136	cmd.exe	95
PID 2664 wrote to memory of 1588	2664	loader.exe	98
PID 2664 wrote to memory of 1588	2664	loader.exe	98
PID 864 wrote to memory of 3484	864	svchost.exe	99
PID 864 wrote to memory of 3484	864	svchost.exe	99
PID 864 wrote to memory of 1624	864	svchost.exe	101
PID 864 wrote to memory of 1624	864	svchost.exe	101
PID 864 wrote to memory of 1260	864	svchost.exe	105
PID 864 wrote to memory of 1260	864	svchost.exe	105
PID 864 wrote to memory of 1704	864	svchost.exe	107
PID 864 wrote to memory of 1704	864	svchost.exe	107
PID 2664 wrote to memory of 2072	2664	loader.exe	109
PID 2664 wrote to memory of 2072	2664	loader.exe	109

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\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Users\Admin\AppData\Roaming\loader.exe
  "C:\Users\Admin\AppData\Roaming\loader.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c MODE CON COLS=80 LINES=20
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1136
  - - C:\Windows\system32\mode.com
      MODE CON COLS=80 LINES=20
      4⤵
      PID:1544
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c cls
    3⤵
    PID:1588
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c cls
    3⤵
    PID:2072
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:864
- - 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'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4728
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of AdjustPrivilegeToken
    PID:3484
- - 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'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of AdjustPrivilegeToken
    PID:1624
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    PID:1260
- - 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.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1704

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
PID:2396

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
6a807b1c91ac66f33f88a787d64904c1

SHA1
83c554c7de04a8115c9005709e5cd01fca82c5d3

SHA256
155314c1c86d8d4e5b802f1eef603c5dd4a2f7c949f069a38af5ba4959bd8256

SHA512
29f2d9f30fc081e7fe6e9fb772c810c9be0422afdc6aff5a286f49a990ededebcf0d083798c2d9f41ad8434393c6d0f5fa6df31226d9c3511ba2a41eb4a65200

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

Filesize
1KB

MD5
024815c3accba1711755d3237a0df81f

SHA1
8e348285d8230ffc6f65d750aec5bf7002f5630e

SHA256
db9e73d748d71a5d48d2f222f38fcb1522d63355a6599053815401624c05bfdf

SHA512
524926862516ed258800d3d9b63bdd19153a5ea89c131c412fde87e66af0dcdb06771ececbe9787d780040c03f63d8a7dc55218029e7636c7de850d814d442c6

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

Filesize
1KB

MD5
c40876de79f73fff08e35a68664f6743

SHA1
dc8e7433be7a1a97570532fe20d1637f5cc8c4e5

SHA256
ec09d772db42ff15049f35424e036b88f0f3d44363e982585c32c872968b52de

SHA512
4e728e10fbd75029d9d24fb74662286b3c95bce27901b3f149b4992d15be5abb32f3a1a780910a022091bc5fe9678dc60e593a137b1ba36d588791d387245fe3

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3bbgufmk.ftp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
29.3MB

MD5
170db7116b898427029ab7fc3c3c8bb9

SHA1
8d2d059d31e06d6234afc051fc2710111ee7370e

SHA256
7c52608e6509a39e649a932bc55769d7c2a43e84744c761aaf3fa4a01013ef1f

SHA512
c06b958fb85aa9de340da70ce02a729b5c1babc88040203d58001dee0dedfdf26621569bb1797f7c5620f7af51e09291d7b399e44a2fcddce476a27101f41090

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

Filesize
70KB

MD5
e9a629dd7b0accda9d7696fc15135663

SHA1
d3643c86610e441da6304670fe7e5c2d07d1a6df

SHA256
bace1c7a8d5498687db5abc129d37373a918d5bda3ef11b94f21b3807887e799

SHA512
cceadc67f570e0165b0925b450e06eac2c46552e0b646a761862f5e6290fbdd727b84b41ca23470edf42da623643f29c58ea5a01bcf084f4488476ecace144d6

Download Submit
memory/864-27-0x0000000000660000-0x0000000000678000-memory.dmp

Filesize
96KB

Download
memory/1624-70-0x00000205E8B40000-0x00000205E8D5D000-memory.dmp

Filesize
2.1MB

Download
memory/2664-41-0x00007FF752070000-0x00007FF7551E7000-memory.dmp

Filesize
49.5MB

Download
memory/2664-40-0x00007FF9A9F00000-0x00007FF9A9F02000-memory.dmp

Filesize
8KB

Download
memory/2664-39-0x00007FF9A9EF0000-0x00007FF9A9EF2000-memory.dmp

Filesize
8KB

Download
memory/3532-0-0x00007FF98B8D3000-0x00007FF98B8D5000-memory.dmp

Filesize
8KB

Download
memory/3532-1-0x0000000000E50000-0x0000000002BAE000-memory.dmp

Filesize
29.4MB

Download
memory/4728-34-0x000002151A840000-0x000002151A862000-memory.dmp

Filesize
136KB

Download