xworm | b3448f4ae8060638bdad47bc3000afd0d5980fe66e09b6b64ae9da9134dcd9b5

Analysis

max time kernel
149s
max time network
136s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
03-12-2024 13:07

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General

Target

Solara.exe
Size

43KB
MD5

a5c594f36fccf6f04552fd2ef8cca82a
SHA1

654fd3bbe89442840010a7cbeccb2346adb0c2d1
SHA256

b3448f4ae8060638bdad47bc3000afd0d5980fe66e09b6b64ae9da9134dcd9b5
SHA512

a66c8ee6212235006b969148a37bc47b4715ef276bd632581c80a39b28f565f5c12235c315ba78e1e251d7c51126af0bd6e2ea32b087616edf595665538a142e
SSDEEP

768:OAoPDwgJOSpuqldThkwh77RXk6mJomGSvFFRPa9Kb6POChgOObKY:OVDwgJOSp7ZvZu19dFA9Kb6POCSHGY

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

someone-proportion.gl.at.ply.gg:16444

Mutex

pLZANQ75KjAVVEWN

Attributes

Install_directory
%ProgramData%
install_file
System.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2308-1-0x0000000000B30000-0x0000000000B42000-memory.dmp	family_xworm
behavioral2/files/0x002e00000004502a-61.dat	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 7 IoCs

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

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
2608	powershell.exe
4888	powershell.exe
4988	powershell.exe
1708	powershell.exe
3776	powershell.exe
3100	powershell.exe
2180	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

Processes:

System.exeSolara.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-584106483-899802418-1877852863-1000\Control Panel\International\Geo\Nation	System.exe
Key value queried	\REGISTRY\USER\S-1-5-21-584106483-899802418-1877852863-1000\Control Panel\International\Geo\Nation	Solara.exe

Drops startup file 2 IoCs

Processes:

Solara.exe

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

Executes dropped EXE 3 IoCs

Processes:

System.exeSystem.exeSystem.exe

pid	Process
3856	System.exe
4672	System.exe
5004	System.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Solara.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-584106483-899802418-1877852863-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System = "C:\\ProgramData\\System.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

Processes:

schtasks.exe

pid	Process
2160	schtasks.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeSolara.exepowershell.exepowershell.exe

pid	Process
2608	powershell.exe
2608	powershell.exe
4888	powershell.exe
4888	powershell.exe
4988	powershell.exe
4988	powershell.exe
1708	powershell.exe
1708	powershell.exe
2308	Solara.exe
3776	powershell.exe
3776	powershell.exe
3100	powershell.exe
3100	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

Solara.exepowershell.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	2308	Solara.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeIncreaseQuotaPrivilege	2608	powershell.exe
Token: SeSecurityPrivilege	2608	powershell.exe
Token: SeTakeOwnershipPrivilege	2608	powershell.exe
Token: SeLoadDriverPrivilege	2608	powershell.exe
Token: SeSystemProfilePrivilege	2608	powershell.exe
Token: SeSystemtimePrivilege	2608	powershell.exe
Token: SeProfSingleProcessPrivilege	2608	powershell.exe
Token: SeIncBasePriorityPrivilege	2608	powershell.exe
Token: SeCreatePagefilePrivilege	2608	powershell.exe
Token: SeBackupPrivilege	2608	powershell.exe
Token: SeRestorePrivilege	2608	powershell.exe
Token: SeShutdownPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeSystemEnvironmentPrivilege	2608	powershell.exe
Token: SeRemoteShutdownPrivilege	2608	powershell.exe
Token: SeUndockPrivilege	2608	powershell.exe
Token: SeManageVolumePrivilege	2608	powershell.exe
Token: 33	2608	powershell.exe
Token: 34	2608	powershell.exe
Token: 35	2608	powershell.exe
Token: 36	2608	powershell.exe
Token: SeDebugPrivilege	4888	powershell.exe
Token: SeIncreaseQuotaPrivilege	4888	powershell.exe
Token: SeSecurityPrivilege	4888	powershell.exe
Token: SeTakeOwnershipPrivilege	4888	powershell.exe
Token: SeLoadDriverPrivilege	4888	powershell.exe
Token: SeSystemProfilePrivilege	4888	powershell.exe
Token: SeSystemtimePrivilege	4888	powershell.exe
Token: SeProfSingleProcessPrivilege	4888	powershell.exe
Token: SeIncBasePriorityPrivilege	4888	powershell.exe
Token: SeCreatePagefilePrivilege	4888	powershell.exe
Token: SeBackupPrivilege	4888	powershell.exe
Token: SeRestorePrivilege	4888	powershell.exe
Token: SeShutdownPrivilege	4888	powershell.exe
Token: SeDebugPrivilege	4888	powershell.exe
Token: SeSystemEnvironmentPrivilege	4888	powershell.exe
Token: SeRemoteShutdownPrivilege	4888	powershell.exe
Token: SeUndockPrivilege	4888	powershell.exe
Token: SeManageVolumePrivilege	4888	powershell.exe
Token: 33	4888	powershell.exe
Token: 34	4888	powershell.exe
Token: 35	4888	powershell.exe
Token: 36	4888	powershell.exe
Token: SeDebugPrivilege	4988	powershell.exe
Token: SeIncreaseQuotaPrivilege	4988	powershell.exe
Token: SeSecurityPrivilege	4988	powershell.exe
Token: SeTakeOwnershipPrivilege	4988	powershell.exe
Token: SeLoadDriverPrivilege	4988	powershell.exe
Token: SeSystemProfilePrivilege	4988	powershell.exe
Token: SeSystemtimePrivilege	4988	powershell.exe
Token: SeProfSingleProcessPrivilege	4988	powershell.exe
Token: SeIncBasePriorityPrivilege	4988	powershell.exe
Token: SeCreatePagefilePrivilege	4988	powershell.exe
Token: SeBackupPrivilege	4988	powershell.exe
Token: SeRestorePrivilege	4988	powershell.exe
Token: SeShutdownPrivilege	4988	powershell.exe
Token: SeDebugPrivilege	4988	powershell.exe
Token: SeSystemEnvironmentPrivilege	4988	powershell.exe
Token: SeRemoteShutdownPrivilege	4988	powershell.exe
Token: SeUndockPrivilege	4988	powershell.exe
Token: SeManageVolumePrivilege	4988	powershell.exe
Token: 33	4988	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Solara.exe

pid	Process
2308	Solara.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Solara.exeSystem.exe

description	pid	Process	procid_target
PID 2308 wrote to memory of 2608	2308	Solara.exe	83
PID 2308 wrote to memory of 2608	2308	Solara.exe	83
PID 2308 wrote to memory of 4888	2308	Solara.exe	88
PID 2308 wrote to memory of 4888	2308	Solara.exe	88
PID 2308 wrote to memory of 4988	2308	Solara.exe	90
PID 2308 wrote to memory of 4988	2308	Solara.exe	90
PID 2308 wrote to memory of 1708	2308	Solara.exe	92
PID 2308 wrote to memory of 1708	2308	Solara.exe	92
PID 2308 wrote to memory of 2160	2308	Solara.exe	95
PID 2308 wrote to memory of 2160	2308	Solara.exe	95
PID 5004 wrote to memory of 3776	5004	System.exe	103
PID 5004 wrote to memory of 3776	5004	System.exe	103
PID 5004 wrote to memory of 3100	5004	System.exe	106
PID 5004 wrote to memory of 3100	5004	System.exe	106

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\Solara.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.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:2308
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2608
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4888
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4988
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1708
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System" /tr "C:\ProgramData\System.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2160

C:\ProgramData\System.exe
"C:\ProgramData\System.exe"
1⤵
- Executes dropped EXE
PID:3856

C:\ProgramData\System.exe
"C:\ProgramData\System.exe"
1⤵
- Executes dropped EXE
PID:4672

C:\ProgramData\System.exe
"C:\ProgramData\System.exe"
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:3776
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:3100
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  PID:2180

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:\ProgramData\System.exe

Filesize
43KB

MD5
a5c594f36fccf6f04552fd2ef8cca82a

SHA1
654fd3bbe89442840010a7cbeccb2346adb0c2d1

SHA256
b3448f4ae8060638bdad47bc3000afd0d5980fe66e09b6b64ae9da9134dcd9b5

SHA512
a66c8ee6212235006b969148a37bc47b4715ef276bd632581c80a39b28f565f5c12235c315ba78e1e251d7c51126af0bd6e2ea32b087616edf595665538a142e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\System.exe.log

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

Download Submit
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
a70a24512295469541923bdf3adbfa19

SHA1
832d221a859448924b19ee2aabfb4869d9a343aa

SHA256
de2d90585d73d8704bf9d384c85421b9858c2f76485d5abeb8720d6c265d9d85

SHA512
261666a0f816598b4a70d5c925fa5ace56d3ddc9def87df9604e42b36f826d5c9b587b07d3c61842a7b3a84c212db8b46450c09e4d77e3f2a996af15c4c8b2fa

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
d2f329b9f9029f110da30d6cfb4e9581

SHA1
ed81739aeac808f26efb323c5225dc5906a2f387

SHA256
85cdada775f58b40181ef2cd6ef87d5bedbffb3481107550a9add560a03dc44e

SHA512
572dc23dca888e54ac66c6988b12f75374e33eb99ebbdaee8ba7765de42f4103e645d5e553fcc3f94521827075d412155b34416dca3c9d89026770b4e8a822ce

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

Filesize
1KB

MD5
982f1450ddd311d7f6b66cd305dbd925

SHA1
b8a001e3773ec0c1e25102189d012938fe06ea70

SHA256
249729e57cd7157c87c7d0075dee85af00facd34138fcc3eabb0ddf0bb634a4a

SHA512
ffec738a960d5f27c3920ae06900f987e4ee848a56efbbbfb952f980910f733cc3f3bd8b5e2389709c361ba9ca83d4d0fb79070da2116ec2b56b518eca4db33a

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

Filesize
1KB

MD5
21301b7f0b154697ce079a0e7d66ae5b

SHA1
f8ac4141ae858fd3cbce081c6c9bf138845eadbc

SHA256
e101573d4ffdc647e3f85e523b0c12da41c69f7c49ac9c894258409c0dae08ea

SHA512
9b45fbae1349546b569752de3549285e895c4a51711e86b190ef814676a46bb7737a0d7ab1cf3bb937fd00d2746f136c6be5afaa7fce17fb5409f5dddda9a1ab

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

Filesize
1KB

MD5
7d910b944b9006d8577e22c4a5095b6c

SHA1
62d2c12a62326be24278b274d71abb85df50b156

SHA256
493f371c53beed7a2c310f89971b4d7125034ba7667da8d20eb5d15966c0efa6

SHA512
cf0327cbebf6a0ef2194124b28f574c996f3c4d46892eeb51b60d1ca8ab0ac8e412dbf121d114aa3463b4b62b19d4d2f27784b78927c96608544ba2238f917fc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_52ua3wa5.2zq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2308-59-0x00007FFC2D8C0000-0x00007FFC2E382000-memory.dmp

Filesize
10.8MB

Download
memory/2308-53-0x00007FFC2D8C3000-0x00007FFC2D8C5000-memory.dmp

Filesize
8KB

Download
memory/2308-0-0x00007FFC2D8C3000-0x00007FFC2D8C5000-memory.dmp

Filesize
8KB

Download
memory/2308-60-0x00007FFC2D8C0000-0x00007FFC2E382000-memory.dmp

Filesize
10.8MB

Download
memory/2308-69-0x00007FFC2D8C0000-0x00007FFC2E382000-memory.dmp

Filesize
10.8MB

Download
memory/2308-1-0x0000000000B30000-0x0000000000B42000-memory.dmp

Filesize
72KB

Download
memory/2608-19-0x00007FFC2D8C0000-0x00007FFC2E382000-memory.dmp

Filesize
10.8MB

Download
memory/2608-18-0x00007FFC2D8C0000-0x00007FFC2E382000-memory.dmp

Filesize
10.8MB

Download
memory/2608-15-0x00007FFC2D8C0000-0x00007FFC2E382000-memory.dmp

Filesize
10.8MB

Download
memory/2608-14-0x00007FFC2D8C0000-0x00007FFC2E382000-memory.dmp

Filesize
10.8MB

Download
memory/2608-13-0x00007FFC2D8C0000-0x00007FFC2E382000-memory.dmp

Filesize
10.8MB

Download
memory/2608-12-0x00007FFC2D8C0000-0x00007FFC2E382000-memory.dmp

Filesize
10.8MB

Download
memory/2608-2-0x000001D345090000-0x000001D3450B2000-memory.dmp

Filesize
136KB

Download