xworm | 7221fe6503a6c7a114a70601e6211093698d74c5286f8ff17822df52b510cfd5

Analysis

max time kernel
145s
max time network
146s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
04/03/2025, 23:38

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General

Target

BootstrapperNew.exe
Size

2.9MB
MD5

a6e5c269f23e7de3907676c9b4220e36
SHA1

4fec20effa5aa204a6fb5d6ec6da9efee2b23162
SHA256

7221fe6503a6c7a114a70601e6211093698d74c5286f8ff17822df52b510cfd5
SHA512

9d56b1ce265c47206b650e212f61050f653290a773ab266d774c37e61579015b3e1cc876c240dc31d8878365a1373da7e9df683217323bd63f1ccf2edb636b00
SSDEEP

49152:QLEu3S+KvEhtxXrdoQ9/SSA6d/MxC6U+3SVTlIJMuy4V5jDFQPKW9OTk8o:qjS+KvEFmASRuf6L3aqvFM9O5o

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

127.0.0.1:36623

fax-scenarios.gl.at.ply.gg:36623

Mutex

iq4Cbvqxc9yxmDW5

Attributes

Install_directory
%AppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000a000000027df9-35.dat	family_xworm
behavioral1/memory/4676-49-0x00000000002D0000-0x00000000002E2000-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
2440	powershell.exe
3288	powershell.exe
728	powershell.exe
4892	powershell.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-983685854-559653692-675906587-1000\Control Panel\International\Geo\Nation	BootstrapperNew.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983685854-559653692-675906587-1000\Control Panel\International\Geo\Nation	Bootstrappe.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983685854-559653692-675906587-1000\Control Panel\International\Geo\Nation	X.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 6 IoCs

pid	Process
4648	Bootstrappe.exe
1448	SolaraNew.exe
4676	X.exe
4948	svchost.exe
1324	svchost.exe
1664	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-1-5-21-983685854-559653692-675906587-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	X.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
4976	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2440	powershell.exe
2440	powershell.exe
3288	powershell.exe
3288	powershell.exe
728	powershell.exe
728	powershell.exe
4892	powershell.exe
4892	powershell.exe
4676	X.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4676	X.exe
Token: SeDebugPrivilege	2440	powershell.exe
Token: SeIncreaseQuotaPrivilege	2440	powershell.exe
Token: SeSecurityPrivilege	2440	powershell.exe
Token: SeTakeOwnershipPrivilege	2440	powershell.exe
Token: SeLoadDriverPrivilege	2440	powershell.exe
Token: SeSystemProfilePrivilege	2440	powershell.exe
Token: SeSystemtimePrivilege	2440	powershell.exe
Token: SeProfSingleProcessPrivilege	2440	powershell.exe
Token: SeIncBasePriorityPrivilege	2440	powershell.exe
Token: SeCreatePagefilePrivilege	2440	powershell.exe
Token: SeBackupPrivilege	2440	powershell.exe
Token: SeRestorePrivilege	2440	powershell.exe
Token: SeShutdownPrivilege	2440	powershell.exe
Token: SeDebugPrivilege	2440	powershell.exe
Token: SeSystemEnvironmentPrivilege	2440	powershell.exe
Token: SeRemoteShutdownPrivilege	2440	powershell.exe
Token: SeUndockPrivilege	2440	powershell.exe
Token: SeManageVolumePrivilege	2440	powershell.exe
Token: 33	2440	powershell.exe
Token: 34	2440	powershell.exe
Token: 35	2440	powershell.exe
Token: 36	2440	powershell.exe
Token: SeDebugPrivilege	3288	powershell.exe
Token: SeIncreaseQuotaPrivilege	3288	powershell.exe
Token: SeSecurityPrivilege	3288	powershell.exe
Token: SeTakeOwnershipPrivilege	3288	powershell.exe
Token: SeLoadDriverPrivilege	3288	powershell.exe
Token: SeSystemProfilePrivilege	3288	powershell.exe
Token: SeSystemtimePrivilege	3288	powershell.exe
Token: SeProfSingleProcessPrivilege	3288	powershell.exe
Token: SeIncBasePriorityPrivilege	3288	powershell.exe
Token: SeCreatePagefilePrivilege	3288	powershell.exe
Token: SeBackupPrivilege	3288	powershell.exe
Token: SeRestorePrivilege	3288	powershell.exe
Token: SeShutdownPrivilege	3288	powershell.exe
Token: SeDebugPrivilege	3288	powershell.exe
Token: SeSystemEnvironmentPrivilege	3288	powershell.exe
Token: SeRemoteShutdownPrivilege	3288	powershell.exe
Token: SeUndockPrivilege	3288	powershell.exe
Token: SeManageVolumePrivilege	3288	powershell.exe
Token: 33	3288	powershell.exe
Token: 34	3288	powershell.exe
Token: 35	3288	powershell.exe
Token: 36	3288	powershell.exe
Token: SeDebugPrivilege	728	powershell.exe
Token: SeIncreaseQuotaPrivilege	728	powershell.exe
Token: SeSecurityPrivilege	728	powershell.exe
Token: SeTakeOwnershipPrivilege	728	powershell.exe
Token: SeLoadDriverPrivilege	728	powershell.exe
Token: SeSystemProfilePrivilege	728	powershell.exe
Token: SeSystemtimePrivilege	728	powershell.exe
Token: SeProfSingleProcessPrivilege	728	powershell.exe
Token: SeIncBasePriorityPrivilege	728	powershell.exe
Token: SeCreatePagefilePrivilege	728	powershell.exe
Token: SeBackupPrivilege	728	powershell.exe
Token: SeRestorePrivilege	728	powershell.exe
Token: SeShutdownPrivilege	728	powershell.exe
Token: SeDebugPrivilege	728	powershell.exe
Token: SeSystemEnvironmentPrivilege	728	powershell.exe
Token: SeRemoteShutdownPrivilege	728	powershell.exe
Token: SeUndockPrivilege	728	powershell.exe
Token: SeManageVolumePrivilege	728	powershell.exe
Token: 33	728	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4676	X.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 5020 wrote to memory of 4648	5020	BootstrapperNew.exe	80
PID 5020 wrote to memory of 4648	5020	BootstrapperNew.exe	80
PID 4648 wrote to memory of 1448	4648	Bootstrappe.exe	82
PID 4648 wrote to memory of 1448	4648	Bootstrappe.exe	82
PID 4648 wrote to memory of 4676	4648	Bootstrappe.exe	83
PID 4648 wrote to memory of 4676	4648	Bootstrappe.exe	83
PID 4676 wrote to memory of 2440	4676	X.exe	86
PID 4676 wrote to memory of 2440	4676	X.exe	86
PID 4676 wrote to memory of 3288	4676	X.exe	91
PID 4676 wrote to memory of 3288	4676	X.exe	91
PID 4676 wrote to memory of 728	4676	X.exe	93
PID 4676 wrote to memory of 728	4676	X.exe	93
PID 4676 wrote to memory of 4892	4676	X.exe	95
PID 4676 wrote to memory of 4892	4676	X.exe	95
PID 4676 wrote to memory of 4976	4676	X.exe	98
PID 4676 wrote to memory of 4976	4676	X.exe	98

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\BootstrapperNew.exe
"C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Users\Admin\AppData\Local\Temp\Bootstrappe.exe
  "C:\Users\Admin\AppData\Local\Temp\Bootstrappe.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4648
- - C:\Users\Admin\AppData\Local\Temp\SolaraNew.exe
    "C:\Users\Admin\AppData\Local\Temp\SolaraNew.exe"
    3⤵
    - Executes dropped EXE
    PID:1448
- - C:\Users\Admin\AppData\Local\Temp\X.exe
    "C:\Users\Admin\AppData\Local\Temp\X.exe"
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4676
  - - 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\X.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2440
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'X.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3288
  - - 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'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:728
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      PID:4892
  - - 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"
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:4976

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
PID:4948

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
PID:1324

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
PID:1664

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
020d1cbef5aeb22088c0faff8d76af4e

SHA1
93e7f27b8fb57cfea4ae330bedcace1a8ce7c014

SHA256
cb283829df7f7ca2f7f8072ed014bebb7d424581e8672a9fa5683f3674726bb0

SHA512
1046228ed9d08e5296c02409b5aa460e8280a633f7f2022ec7dc7c1e750522260006844bd5114ec713593bce1d10b8932963a8630e6707e76b45a0cb8c8ff53d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.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
29d056d9bc9b4ec73b3c65ff2ab3de06

SHA1
dc003908eba5553852886f062ad1c37072e2ffe1

SHA256
65290526acdf94c202c88fe590659e4358495e3ad18040f6a380aae80bec3044

SHA512
f24d3803b7acbbc627655ce4ea0bf3f3f8a33ce094555688e0ff09192625c068af34cb5694dc00b7f0b9ec1d00dcc060c2df03f967bc5cdb7e3b53c69c7ef326

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

Filesize
1KB

MD5
0d9ee3fed6743bc341bbb3683125d066

SHA1
e39707e7ac64fddccad2c0a1c8fa88e5bfb50945

SHA256
fe35f71394332712438c468ca4032079fdfd19858ddf3e6b2450583ffc46741b

SHA512
bbb1d9c36130b60975e167cba532861a517d78c51223e535badb7a017c7af362fa94f9a77a0619363998f86d15f74ed5c9615552d3bc0746406df8db2762b10b

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

Filesize
1KB

MD5
e4115b6aec6e8175d5ba82ea5d6814e4

SHA1
c5f4b102a89d96e4e3d42184d14faf2d5ea25791

SHA256
6c040aa37326b1490a81680367d627442685327f974e34afb08ca45ca0681276

SHA512
1883d7153e86c5a9df2d5bcd579034208225706f40f544ffb7692cb3fa625cfea992105e551486ce23a12ee905c60b133783324d3604563da7371cd54c9a598e

Download Submit
C:\Users\Admin\AppData\Local\Temp\Bootstrappe.exe

Filesize
2.9MB

MD5
131133cc49e50582830a994f8f5b4801

SHA1
6a462b92271e41bd2eb429a43d130ee5e16611c3

SHA256
e4cbecaaff0904bcd1ffd4d95287d5a5e952af98597781aab9a9cb8cd9f8d915

SHA512
0c59301cf9f328395cd421d54b6becf9e4aefe40248ebbaee69ba557ca8108b65c0e30bec6a30c412646dc8de5b8c86b35093b952a7cfa378caf74a276ccf459

Download Submit
C:\Users\Admin\AppData\Local\Temp\SolaraNew.exe

Filesize
2.9MB

MD5
f227cdfd423b3cc03bb69c49babf4da3

SHA1
3db5a97d9b0f2545e7ba97026af6c28512200441

SHA256
cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8

SHA512
b10afd03b02a928545c16fad39a6ae46b68b1e1a2477a6990803ce80008e7161fb2ebc9380ba15a1b074bb436aa34bcd6c94a922933d438b1c22489717e1e10e

Download Submit
C:\Users\Admin\AppData\Local\Temp\X.exe

Filesize
44KB

MD5
d8dec448ddbb0749bbe3f4259c9bc29b

SHA1
93886a2b1c55fa6ff41ac5bce6945e601d355f8c

SHA256
56ef629323495497970ffe5efd4c3197bd8043825ba264b9e6294113675820ac

SHA512
20739296d87d15b801086a8e7478875722e83dc1fd4004e9905a1c6f8c0c8913644bcf7e5b7aecb760f4870354118fc10d218f952fcd7b204c1f0ebae4e4a400

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mce2obor.g1r.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1448-62-0x000002532EB30000-0x000002532EB38000-memory.dmp

Filesize
32KB

Download
memory/1448-59-0x000002532EB10000-0x000002532EB26000-memory.dmp

Filesize
88KB

Download
memory/1448-52-0x000002532ADF0000-0x000002532ADF8000-memory.dmp

Filesize
32KB

Download
memory/1448-53-0x000002532AE70000-0x000002532AEA8000-memory.dmp

Filesize
224KB

Download
memory/1448-54-0x000002532AE40000-0x000002532AE4E000-memory.dmp

Filesize
56KB

Download
memory/1448-55-0x000002532EA10000-0x000002532EB10000-memory.dmp

Filesize
1024KB

Download
memory/1448-56-0x000002532AE50000-0x000002532AE5A000-memory.dmp

Filesize
40KB

Download
memory/1448-57-0x000002532AEB0000-0x000002532AED6000-memory.dmp

Filesize
152KB

Download
memory/1448-58-0x000002532AEF0000-0x000002532AEF8000-memory.dmp

Filesize
32KB

Download
memory/1448-51-0x000002530FF10000-0x000002530FF20000-memory.dmp

Filesize
64KB

Download
memory/1448-60-0x000002532AEE0000-0x000002532AEEA000-memory.dmp

Filesize
40KB

Download
memory/1448-61-0x000002532AE60000-0x000002532AE6A000-memory.dmp

Filesize
40KB

Download
memory/1448-50-0x000002530E0A0000-0x000002530E382000-memory.dmp

Filesize
2.9MB

Download
memory/2440-73-0x00000269C6820000-0x00000269C6842000-memory.dmp

Filesize
136KB

Download
memory/4648-48-0x00007FFB55BA0000-0x00007FFB56662000-memory.dmp

Filesize
10.8MB

Download
memory/4648-18-0x00007FFB55BA0000-0x00007FFB56662000-memory.dmp

Filesize
10.8MB

Download
memory/4648-17-0x0000000000C70000-0x0000000000F62000-memory.dmp

Filesize
2.9MB

Download
memory/4676-49-0x00000000002D0000-0x00000000002E2000-memory.dmp

Filesize
72KB

Download
memory/5020-0-0x00007FFB55BA3000-0x00007FFB55BA5000-memory.dmp

Filesize
8KB

Download
memory/5020-1-0x0000000000450000-0x0000000000744000-memory.dmp

Filesize
3.0MB

Download