xworm | aa812c21aaeb5b48ec10a31947d93dbb230378996de199cf03cb4aad59de0b7d

Analysis

max time kernel
148s
max time network
152s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
05/03/2025, 14:05

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General

Target

BootstrapperNew.exe
Size

2.9MB
MD5

ef689efcb854737c11aad79748d7894b
SHA1

84a529fe86d37550aada5a25daade0039d805711
SHA256

aa812c21aaeb5b48ec10a31947d93dbb230378996de199cf03cb4aad59de0b7d
SHA512

8899c95d65b1c1b2280a0525502561a89d678ff5561890e513335d546e82d9a9e3aff25b740dd19649fb014ab7b948803484100d9a138bbc9b20d5a712e5fdde
SSDEEP

49152:7WbFWXIrE4Rrf9LhnjDMdom7+lmtsLB64AkL5LOUwHtcUtT1:iUhgvq9vyLBJPBOPHtcg

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

127.0.0.1:43417

engine-greg.gl.at.ply.gg:43417

Mutex

azFwRrOTO782Luch

Attributes

Install_directory
%AppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0009000000027ebd-18.dat	family_xworm
behavioral1/memory/5216-32-0x0000000000FB0000-0x0000000000FC2000-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
548	powershell.exe
5624	powershell.exe
1852	powershell.exe
6104	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-1-5-21-1886653772-2813795769-2221171443-1000\Control Panel\International\Geo\Nation	BootstrapperNew.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1886653772-2813795769-2221171443-1000\Control Panel\International\Geo\Nation	Solara.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
3396	Bootstrapper.exe
5216	Solara.exe
716	svchost.exe
4440	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-1-5-21-1886653772-2813795769-2221171443-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Solara.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
1160	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
548	powershell.exe
548	powershell.exe
5624	powershell.exe
5624	powershell.exe
1852	powershell.exe
1852	powershell.exe
6104	powershell.exe
6104	powershell.exe
5216	Solara.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5216	Solara.exe
Token: SeDebugPrivilege	548	powershell.exe
Token: SeIncreaseQuotaPrivilege	548	powershell.exe
Token: SeSecurityPrivilege	548	powershell.exe
Token: SeTakeOwnershipPrivilege	548	powershell.exe
Token: SeLoadDriverPrivilege	548	powershell.exe
Token: SeSystemProfilePrivilege	548	powershell.exe
Token: SeSystemtimePrivilege	548	powershell.exe
Token: SeProfSingleProcessPrivilege	548	powershell.exe
Token: SeIncBasePriorityPrivilege	548	powershell.exe
Token: SeCreatePagefilePrivilege	548	powershell.exe
Token: SeBackupPrivilege	548	powershell.exe
Token: SeRestorePrivilege	548	powershell.exe
Token: SeShutdownPrivilege	548	powershell.exe
Token: SeDebugPrivilege	548	powershell.exe
Token: SeSystemEnvironmentPrivilege	548	powershell.exe
Token: SeRemoteShutdownPrivilege	548	powershell.exe
Token: SeUndockPrivilege	548	powershell.exe
Token: SeManageVolumePrivilege	548	powershell.exe
Token: 33	548	powershell.exe
Token: 34	548	powershell.exe
Token: 35	548	powershell.exe
Token: 36	548	powershell.exe
Token: SeDebugPrivilege	5624	powershell.exe
Token: SeIncreaseQuotaPrivilege	5624	powershell.exe
Token: SeSecurityPrivilege	5624	powershell.exe
Token: SeTakeOwnershipPrivilege	5624	powershell.exe
Token: SeLoadDriverPrivilege	5624	powershell.exe
Token: SeSystemProfilePrivilege	5624	powershell.exe
Token: SeSystemtimePrivilege	5624	powershell.exe
Token: SeProfSingleProcessPrivilege	5624	powershell.exe
Token: SeIncBasePriorityPrivilege	5624	powershell.exe
Token: SeCreatePagefilePrivilege	5624	powershell.exe
Token: SeBackupPrivilege	5624	powershell.exe
Token: SeRestorePrivilege	5624	powershell.exe
Token: SeShutdownPrivilege	5624	powershell.exe
Token: SeDebugPrivilege	5624	powershell.exe
Token: SeSystemEnvironmentPrivilege	5624	powershell.exe
Token: SeRemoteShutdownPrivilege	5624	powershell.exe
Token: SeUndockPrivilege	5624	powershell.exe
Token: SeManageVolumePrivilege	5624	powershell.exe
Token: 33	5624	powershell.exe
Token: 34	5624	powershell.exe
Token: 35	5624	powershell.exe
Token: 36	5624	powershell.exe
Token: SeDebugPrivilege	1852	powershell.exe
Token: SeIncreaseQuotaPrivilege	1852	powershell.exe
Token: SeSecurityPrivilege	1852	powershell.exe
Token: SeTakeOwnershipPrivilege	1852	powershell.exe
Token: SeLoadDriverPrivilege	1852	powershell.exe
Token: SeSystemProfilePrivilege	1852	powershell.exe
Token: SeSystemtimePrivilege	1852	powershell.exe
Token: SeProfSingleProcessPrivilege	1852	powershell.exe
Token: SeIncBasePriorityPrivilege	1852	powershell.exe
Token: SeCreatePagefilePrivilege	1852	powershell.exe
Token: SeBackupPrivilege	1852	powershell.exe
Token: SeRestorePrivilege	1852	powershell.exe
Token: SeShutdownPrivilege	1852	powershell.exe
Token: SeDebugPrivilege	1852	powershell.exe
Token: SeSystemEnvironmentPrivilege	1852	powershell.exe
Token: SeRemoteShutdownPrivilege	1852	powershell.exe
Token: SeUndockPrivilege	1852	powershell.exe
Token: SeManageVolumePrivilege	1852	powershell.exe
Token: 33	1852	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5216	Solara.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1328 wrote to memory of 3396	1328	BootstrapperNew.exe	84
PID 1328 wrote to memory of 3396	1328	BootstrapperNew.exe	84
PID 1328 wrote to memory of 5216	1328	BootstrapperNew.exe	85
PID 1328 wrote to memory of 5216	1328	BootstrapperNew.exe	85
PID 5216 wrote to memory of 548	5216	Solara.exe	86
PID 5216 wrote to memory of 548	5216	Solara.exe	86
PID 5216 wrote to memory of 5624	5216	Solara.exe	89
PID 5216 wrote to memory of 5624	5216	Solara.exe	89
PID 5216 wrote to memory of 1852	5216	Solara.exe	91
PID 5216 wrote to memory of 1852	5216	Solara.exe	91
PID 5216 wrote to memory of 6104	5216	Solara.exe	93
PID 5216 wrote to memory of 6104	5216	Solara.exe	93
PID 5216 wrote to memory of 1160	5216	Solara.exe	98
PID 5216 wrote to memory of 1160	5216	Solara.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:1328
- C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
  "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
  2⤵
  - Executes dropped EXE
  PID:3396
- C:\Users\Admin\AppData\Local\Temp\Solara.exe
  "C:\Users\Admin\AppData\Local\Temp\Solara.exe"
  2⤵
  - 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:5216
- - 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\Solara.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:548
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Solara.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5624
- - 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:1852
- - 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 behavior: EnumeratesProcesses
    PID:6104
- - 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:1160

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

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
PID:4440

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\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
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
1KB

MD5
2c29e0b132bc937ab311fb9ddec7e398

SHA1
d6fcfc55694bf40152877dca255fdf7086a4f38a

SHA256
a99bb45c15e7b13de98561fdae201b18b46b0d19731cc117f1428196d6016b0e

SHA512
7d5413eb70984a074c7d66cb3d5ab838dea7179aa84d9369036cdfcbc26afb78d9fb315fda9dfeb3e91e7e1fdb969689e3f48ecaa0e22eab42c2dbdf0182f741

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

Filesize
1KB

MD5
ff0d91c657fca312aefdf4bb53f5cf56

SHA1
1329a10d901f4cffceee36675a7c5bd34baed438

SHA256
bb87d18873b646c62523165e28afa0813b4c5efa8c0a51f801cdcf795576b31b

SHA512
83c453117c60aecf103d38e049d04993f70b0b51a25c649e83b2adbc3416812037f0d45f985a11300f2ddd46469b54f466e587da2bed99aa97f0854c369af8ce

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

Filesize
2.9MB

MD5
f227cdfd423b3cc03bb69c49babf4da3

SHA1
3db5a97d9b0f2545e7ba97026af6c28512200441

SHA256
cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8

SHA512
b10afd03b02a928545c16fad39a6ae46b68b1e1a2477a6990803ce80008e7161fb2ebc9380ba15a1b074bb436aa34bcd6c94a922933d438b1c22489717e1e10e

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

Filesize
44KB

MD5
108b3bdd5ed4157417e6e030d185c3b3

SHA1
7d2ea5e9c64f58c917fd225f37029f9d0ce10584

SHA256
f13d72e60b9097610bb9902cbc23cc16849b30859b8df0237a6aba5cd9909132

SHA512
c121426471073f159e9ff43845a57ee6355f7995183839dd28057eef2fbe87b3c0d30cd38101254e4d5f2a0b0b3393b99d0d55e47f5c9eab4d055487a6f76416

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gtqhnu4g.bmv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/548-58-0x000001BCD8030000-0x000001BCD8052000-memory.dmp

Filesize
136KB

Download
memory/1328-1-0x0000000000740000-0x0000000000A32000-memory.dmp

Filesize
2.9MB

Download
memory/1328-0-0x00007FFBF6303000-0x00007FFBF6305000-memory.dmp

Filesize
8KB

Download
memory/3396-35-0x000001D248E50000-0x000001D248E58000-memory.dmp

Filesize
32KB

Download
memory/3396-99-0x00007FFBF6300000-0x00007FFBF6DC2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-41-0x000001D248EB0000-0x000001D248EBA000-memory.dmp

Filesize
40KB

Download
memory/3396-40-0x000001D24A1B0000-0x000001D24A2B0000-memory.dmp

Filesize
1024KB

Download
memory/3396-42-0x000001D248F10000-0x000001D248F36000-memory.dmp

Filesize
152KB

Download
memory/3396-43-0x000001D248F50000-0x000001D248F58000-memory.dmp

Filesize
32KB

Download
memory/3396-44-0x000001D249560000-0x000001D249576000-memory.dmp

Filesize
88KB

Download
memory/3396-45-0x000001D248F40000-0x000001D248F4A000-memory.dmp

Filesize
40KB

Download
memory/3396-46-0x000001D248EC0000-0x000001D248ECA000-memory.dmp

Filesize
40KB

Download
memory/3396-47-0x000001D249590000-0x000001D249598000-memory.dmp

Filesize
32KB

Download
memory/3396-39-0x000001D248EA0000-0x000001D248EAE000-memory.dmp

Filesize
56KB

Download
memory/3396-31-0x000001D228870000-0x000001D228B52000-memory.dmp

Filesize
2.9MB

Download
memory/3396-36-0x00007FFBF6300000-0x00007FFBF6DC2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-34-0x000001D22A840000-0x000001D22A850000-memory.dmp

Filesize
64KB

Download
memory/3396-33-0x00007FFBF6300000-0x00007FFBF6DC2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-101-0x00007FFBF6300000-0x00007FFBF6DC2000-memory.dmp

Filesize
10.8MB

Download
memory/3396-38-0x000001D248ED0000-0x000001D248F08000-memory.dmp

Filesize
224KB

Download
memory/5216-100-0x00007FFBF6300000-0x00007FFBF6DC2000-memory.dmp

Filesize
10.8MB

Download
memory/5216-32-0x0000000000FB0000-0x0000000000FC2000-memory.dmp

Filesize
72KB

Download
memory/5216-102-0x00007FFBF6300000-0x00007FFBF6DC2000-memory.dmp

Filesize
10.8MB

Download
memory/5216-103-0x00007FFBF6300000-0x00007FFBF6DC2000-memory.dmp

Filesize
10.8MB

Download
memory/5216-37-0x00007FFBF6300000-0x00007FFBF6DC2000-memory.dmp

Filesize
10.8MB

Download