xworm | aa812c21aaeb5b48ec10a31947d93dbb230378996de199cf03cb4aad59de0b7d

Analysis

max time kernel
149s
max time network
151s
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, 13:58

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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/0x0008000000027e4e-18.dat	family_xworm
behavioral1/memory/3660-31-0x0000000000640000-0x0000000000652000-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
3016	powershell.exe
448	powershell.exe
4796	powershell.exe
1996	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-1-5-21-3452737631-513087862-588053281-1000\Control Panel\International\Geo\Nation	BootstrapperNew.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3452737631-513087862-588053281-1000\Control Panel\International\Geo\Nation	Solara.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
860	Bootstrapper.exe
3660	Solara.exe
4088	svchost.exe
1524	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-1-5-21-3452737631-513087862-588053281-1000\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
3540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3016	powershell.exe
3016	powershell.exe
448	powershell.exe
448	powershell.exe
4796	powershell.exe
4796	powershell.exe
1996	powershell.exe
1996	powershell.exe
3660	Solara.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3660	Solara.exe
Token: SeDebugPrivilege	3016	powershell.exe
Token: SeIncreaseQuotaPrivilege	3016	powershell.exe
Token: SeSecurityPrivilege	3016	powershell.exe
Token: SeTakeOwnershipPrivilege	3016	powershell.exe
Token: SeLoadDriverPrivilege	3016	powershell.exe
Token: SeSystemProfilePrivilege	3016	powershell.exe
Token: SeSystemtimePrivilege	3016	powershell.exe
Token: SeProfSingleProcessPrivilege	3016	powershell.exe
Token: SeIncBasePriorityPrivilege	3016	powershell.exe
Token: SeCreatePagefilePrivilege	3016	powershell.exe
Token: SeBackupPrivilege	3016	powershell.exe
Token: SeRestorePrivilege	3016	powershell.exe
Token: SeShutdownPrivilege	3016	powershell.exe
Token: SeDebugPrivilege	3016	powershell.exe
Token: SeSystemEnvironmentPrivilege	3016	powershell.exe
Token: SeRemoteShutdownPrivilege	3016	powershell.exe
Token: SeUndockPrivilege	3016	powershell.exe
Token: SeManageVolumePrivilege	3016	powershell.exe
Token: 33	3016	powershell.exe
Token: 34	3016	powershell.exe
Token: 35	3016	powershell.exe
Token: 36	3016	powershell.exe
Token: SeDebugPrivilege	448	powershell.exe
Token: SeIncreaseQuotaPrivilege	448	powershell.exe
Token: SeSecurityPrivilege	448	powershell.exe
Token: SeTakeOwnershipPrivilege	448	powershell.exe
Token: SeLoadDriverPrivilege	448	powershell.exe
Token: SeSystemProfilePrivilege	448	powershell.exe
Token: SeSystemtimePrivilege	448	powershell.exe
Token: SeProfSingleProcessPrivilege	448	powershell.exe
Token: SeIncBasePriorityPrivilege	448	powershell.exe
Token: SeCreatePagefilePrivilege	448	powershell.exe
Token: SeBackupPrivilege	448	powershell.exe
Token: SeRestorePrivilege	448	powershell.exe
Token: SeShutdownPrivilege	448	powershell.exe
Token: SeDebugPrivilege	448	powershell.exe
Token: SeSystemEnvironmentPrivilege	448	powershell.exe
Token: SeRemoteShutdownPrivilege	448	powershell.exe
Token: SeUndockPrivilege	448	powershell.exe
Token: SeManageVolumePrivilege	448	powershell.exe
Token: 33	448	powershell.exe
Token: 34	448	powershell.exe
Token: 35	448	powershell.exe
Token: 36	448	powershell.exe
Token: SeDebugPrivilege	4796	powershell.exe
Token: SeIncreaseQuotaPrivilege	4796	powershell.exe
Token: SeSecurityPrivilege	4796	powershell.exe
Token: SeTakeOwnershipPrivilege	4796	powershell.exe
Token: SeLoadDriverPrivilege	4796	powershell.exe
Token: SeSystemProfilePrivilege	4796	powershell.exe
Token: SeSystemtimePrivilege	4796	powershell.exe
Token: SeProfSingleProcessPrivilege	4796	powershell.exe
Token: SeIncBasePriorityPrivilege	4796	powershell.exe
Token: SeCreatePagefilePrivilege	4796	powershell.exe
Token: SeBackupPrivilege	4796	powershell.exe
Token: SeRestorePrivilege	4796	powershell.exe
Token: SeShutdownPrivilege	4796	powershell.exe
Token: SeDebugPrivilege	4796	powershell.exe
Token: SeSystemEnvironmentPrivilege	4796	powershell.exe
Token: SeRemoteShutdownPrivilege	4796	powershell.exe
Token: SeUndockPrivilege	4796	powershell.exe
Token: SeManageVolumePrivilege	4796	powershell.exe
Token: 33	4796	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3660	Solara.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3264 wrote to memory of 860	3264	BootstrapperNew.exe	84
PID 3264 wrote to memory of 860	3264	BootstrapperNew.exe	84
PID 3264 wrote to memory of 3660	3264	BootstrapperNew.exe	85
PID 3264 wrote to memory of 3660	3264	BootstrapperNew.exe	85
PID 3660 wrote to memory of 3016	3660	Solara.exe	86
PID 3660 wrote to memory of 3016	3660	Solara.exe	86
PID 3660 wrote to memory of 448	3660	Solara.exe	89
PID 3660 wrote to memory of 448	3660	Solara.exe	89
PID 3660 wrote to memory of 4796	3660	Solara.exe	91
PID 3660 wrote to memory of 4796	3660	Solara.exe	91
PID 3660 wrote to memory of 1996	3660	Solara.exe	95
PID 3660 wrote to memory of 1996	3660	Solara.exe	95
PID 3660 wrote to memory of 3540	3660	Solara.exe	99
PID 3660 wrote to memory of 3540	3660	Solara.exe	99

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:3264
- C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
  "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
  2⤵
  - Executes dropped EXE
  PID:860
- 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:3660
- - 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:3016
- - 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:448
- - 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:4796
- - 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:1996
- - 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:3540

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
PID:4088

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
PID:1524

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
6a807b1c91ac66f33f88a787d64904c1

SHA1
83c554c7de04a8115c9005709e5cd01fca82c5d3

SHA256
155314c1c86d8d4e5b802f1eef603c5dd4a2f7c949f069a38af5ba4959bd8256

SHA512
29f2d9f30fc081e7fe6e9fb772c810c9be0422afdc6aff5a286f49a990ededebcf0d083798c2d9f41ad8434393c6d0f5fa6df31226d9c3511ba2a41eb4a65200

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

Filesize
1KB

MD5
a13e971da82587c2b390aea50a77ae17

SHA1
22aabb1ea013d905a5437bf139b0f40358fdb5b0

SHA256
b79f3ddcec35c3ea906bad11b9950651694713d9b381b043245531bce4d2e4be

SHA512
6baf868a594e38633ee52c1db343ff30ca812304c13525773d1404042a1d2c5d766c0ccc08b76facf12d98c5f8e0b9584b13425d068953dfcff7e6b5ed61b7ce

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

Filesize
1KB

MD5
1f2aaa32d68ee2a34f84d96cd6b3679d

SHA1
cb39249c3d6e71a18071eae7d337044418046574

SHA256
13390b82e91e6a1603735a31f4b94b8960f1346123ddd5b47f1c6eb46e7fae5c

SHA512
cfb2df8f24afe40fadbc2077abc3ece3c7f0fc8509546da578c8fac19966bf8b517cf81900e03d812e0564ad2d5aa5f5a43ee356e452a9aaf4f62f2eccf26c46

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_phqxzkox.guj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/860-43-0x000001B759BA0000-0x000001B759BA8000-memory.dmp

Filesize
32KB

Download
memory/860-44-0x000001B759BB0000-0x000001B759BC6000-memory.dmp

Filesize
88KB

Download
memory/860-37-0x000001B73B250000-0x000001B73B258000-memory.dmp

Filesize
32KB

Download
memory/860-39-0x000001B753A70000-0x000001B753A7E000-memory.dmp

Filesize
56KB

Download
memory/860-38-0x000001B759B50000-0x000001B759B88000-memory.dmp

Filesize
224KB

Download
memory/860-40-0x000001B75AA10000-0x000001B75AB10000-memory.dmp

Filesize
1024KB

Download
memory/860-41-0x000001B753A80000-0x000001B753A8A000-memory.dmp

Filesize
40KB

Download
memory/860-42-0x000001B759B20000-0x000001B759B46000-memory.dmp

Filesize
152KB

Download
memory/860-102-0x00007FFC07BD0000-0x00007FFC08692000-memory.dmp

Filesize
10.8MB

Download
memory/860-32-0x000001B7390C0000-0x000001B7393A2000-memory.dmp

Filesize
2.9MB

Download
memory/860-45-0x000001B759B90000-0x000001B759B9A000-memory.dmp

Filesize
40KB

Download
memory/860-46-0x000001B759B10000-0x000001B759B1A000-memory.dmp

Filesize
40KB

Download
memory/860-47-0x000001B759BE0000-0x000001B759BE8000-memory.dmp

Filesize
32KB

Download
memory/860-36-0x00007FFC07BD0000-0x00007FFC08692000-memory.dmp

Filesize
10.8MB

Download
memory/860-100-0x00007FFC07BD0000-0x00007FFC08692000-memory.dmp

Filesize
10.8MB

Download
memory/860-34-0x000001B739940000-0x000001B739950000-memory.dmp

Filesize
64KB

Download
memory/860-33-0x00007FFC07BD0000-0x00007FFC08692000-memory.dmp

Filesize
10.8MB

Download
memory/3016-54-0x00000195BA720000-0x00000195BA742000-memory.dmp

Filesize
136KB

Download
memory/3264-0-0x00007FFC07BD3000-0x00007FFC07BD5000-memory.dmp

Filesize
8KB

Download
memory/3264-1-0x0000000000910000-0x0000000000C02000-memory.dmp

Filesize
2.9MB

Download
memory/3660-31-0x0000000000640000-0x0000000000652000-memory.dmp

Filesize
72KB

Download
memory/3660-99-0x00007FFC07BD0000-0x00007FFC08692000-memory.dmp

Filesize
10.8MB

Download
memory/3660-35-0x00007FFC07BD0000-0x00007FFC08692000-memory.dmp

Filesize
10.8MB

Download
memory/3660-101-0x00007FFC07BD0000-0x00007FFC08692000-memory.dmp

Filesize
10.8MB

Download
memory/3660-103-0x00007FFC07BD0000-0x00007FFC08692000-memory.dmp

Filesize
10.8MB

Download
memory/3660-108-0x0000000000D50000-0x0000000000D5C000-memory.dmp

Filesize
48KB

Download