xworm | b3448f4ae8060638bdad47bc3000afd0d5980fe66e09b6b64ae9da9134dcd9b5

Analysis

max time kernel
149s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-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

resource	yara_rule
behavioral3/memory/5256-1-0x00000000006B0000-0x00000000006C2000-memory.dmp	family_xworm
behavioral3/files/0x002000000002aac5-55.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 8 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3344	powershell.exe
4092	powershell.exe
1416	powershell.exe
6124	powershell.exe
780	powershell.exe
788	powershell.exe
6064	powershell.exe
2060	powershell.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
4556	System.exe
920	System.exe
2128	System.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3973800497-2716210218-310192997-1000\Software\Microsoft\Windows\CurrentVersion\Run\System = "C:\\ProgramData\\System.exe"	Solara.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3973800497-2716210218-310192997-1000\Software\Microsoft\Windows\CurrentVersion\Run\System = "C:\\ProgramData\\System.exe"	System.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 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4224	schtasks.exe
5628	schtasks.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
780	powershell.exe
780	powershell.exe
788	powershell.exe
788	powershell.exe
6064	powershell.exe
6064	powershell.exe
2060	powershell.exe
2060	powershell.exe
5256	Solara.exe
3344	powershell.exe
3344	powershell.exe
4092	powershell.exe
4092	powershell.exe
1416	powershell.exe
1416	powershell.exe
6124	powershell.exe
6124	powershell.exe
2128	System.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	5256	Solara.exe
Token: SeDebugPrivilege	780	powershell.exe
Token: SeDebugPrivilege	788	powershell.exe
Token: SeDebugPrivilege	6064	powershell.exe
Token: SeDebugPrivilege	2060	powershell.exe
Token: SeDebugPrivilege	5256	Solara.exe
Token: SeDebugPrivilege	4556	System.exe
Token: SeDebugPrivilege	920	System.exe
Token: SeDebugPrivilege	2128	System.exe
Token: SeDebugPrivilege	3344	powershell.exe
Token: SeDebugPrivilege	4092	powershell.exe
Token: SeDebugPrivilege	1416	powershell.exe
Token: SeDebugPrivilege	6124	powershell.exe
Token: SeDebugPrivilege	2128	System.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5256	Solara.exe
2128	System.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 5256 wrote to memory of 780	5256	Solara.exe	77
PID 5256 wrote to memory of 780	5256	Solara.exe	77
PID 5256 wrote to memory of 788	5256	Solara.exe	79
PID 5256 wrote to memory of 788	5256	Solara.exe	79
PID 5256 wrote to memory of 6064	5256	Solara.exe	81
PID 5256 wrote to memory of 6064	5256	Solara.exe	81
PID 5256 wrote to memory of 2060	5256	Solara.exe	83
PID 5256 wrote to memory of 2060	5256	Solara.exe	83
PID 5256 wrote to memory of 4224	5256	Solara.exe	85
PID 5256 wrote to memory of 4224	5256	Solara.exe	85
PID 2128 wrote to memory of 3344	2128	System.exe	91
PID 2128 wrote to memory of 3344	2128	System.exe	91
PID 2128 wrote to memory of 4092	2128	System.exe	93
PID 2128 wrote to memory of 4092	2128	System.exe	93
PID 2128 wrote to memory of 1416	2128	System.exe	95
PID 2128 wrote to memory of 1416	2128	System.exe	95
PID 2128 wrote to memory of 6124	2128	System.exe	97
PID 2128 wrote to memory of 6124	2128	System.exe	97
PID 2128 wrote to memory of 5628	2128	System.exe	99
PID 2128 wrote to memory of 5628	2128	System.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\Solara.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.exe"
1⤵
- 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:5256
- 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:780
- 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:788
- 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:6064
- 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
  - Suspicious use of AdjustPrivilegeToken
  PID:2060
- 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:4224

C:\ProgramData\System.exe
C:\ProgramData\System.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4556

C:\ProgramData\System.exe
C:\ProgramData\System.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:920

C:\ProgramData\System.exe
C:\ProgramData\System.exe
1⤵
- 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:2128
- 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:3344
- 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
  - Suspicious use of AdjustPrivilegeToken
  PID:4092
- 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:1416
- 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
  - Suspicious use of AdjustPrivilegeToken
  PID:6124
- 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:5628

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
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
b0a85f07903eaad4aace8865ff28679f

SHA1
caa147464cf2e31bf9b482c3ba3c5c71951566d1

SHA256
c85c7915e0bcc6cc3d7dd2f6b9d9e4f9a3cf0ccefa043b1c500facac8428bfd5

SHA512
7a650a74a049e71b748f60614723de2b9d2385a0f404606bcb22ae807e22a74c53cf672df9e7a23605dfff37865443a5899eafea323134a818eb59c96e0f94bd

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

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
944B

MD5
4093e5ab3812960039eba1a814c2ffb0

SHA1
b5e4a98a80be72fccd3cc910e93113d2febef298

SHA256
c0794e2b7036ce5612446a8b15e0c8387773bbc921f63cf8849f8a1f4ef3878c

SHA512
f3555b45aa1a1dd5214716dc81a05905c4ecd5a3e1276d35e08c65623ab1d14d469b3b576a5d9638264c1222d73889d2cc1ee43fb579d9ca3fcddd9f557cac7b

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

Filesize
944B

MD5
4914eb0b2ff51bfa48484b5cc8454218

SHA1
6a7c3e36ce53b42497884d4c4a3bda438dd4374b

SHA256
7e510fc9344ef239ab1ab650dc95bb25fd44e2efba8b8246a3ac17880ee8b69e

SHA512
83ab35f622f4a5040ca5cb615a30f83bb0741449225f1fd1815b6923e225c28241d0c02d34f83f743349a5e57f84ca1c6f44016797a93d5985be41d11be79500

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

Filesize
944B

MD5
050567a067ffea4eb40fe2eefebdc1ee

SHA1
6e1fb2c7a7976e0724c532449e97722787a00fec

SHA256
3952d5b543e5cb0cb84014f4ad9f5f1b7166f592d28640cbc3d914d0e6f41d2e

SHA512
341ad71ef7e850b10e229666312e4bca87a0ed9fe25ba4b0ab65661d5a0efa855db0592153106da07134d8fc2c6c0e44709bf38183c9a574a1fa543189971259

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

Filesize
944B

MD5
6d84f220217a01836884dc544f29ff06

SHA1
a8798d636cd85c05d7d48e30a5b604715bded7a0

SHA256
ddfcf871b2e9aca8cac3aaa5d72d7b19e8e785dcdacc81b5329146798a91c7a5

SHA512
664cb6141d01343b5816b2bfec35a6424eede2f5f633bb318833e0e47a06b0c3aac6a16064baa2ece47a51c9625a234791c8ceba8435c025dcfb0ba77f2fb15e

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

Filesize
944B

MD5
0b59f3fa12628f63b5713c4833570d7f

SHA1
badcf18f1fdc94b1eadf63f27c09ad092c4a6ccb

SHA256
2332e52881483559d787508831c00192c4f0a4fedc232b0309e566a30247af1d

SHA512
01724fd9f7a20ec5ff3d2686593d5d95069135834e9b156ced36985067fb36e7b3ec2a0018e41fa125ad5d1e42c80be9e148632a9b655f2d41c1400a4320abe7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_q5vwugfw.3hr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.lnk

Filesize
665B

MD5
0638eebe00460c08f59aafe75e20f54a

SHA1
c158521c2058c656540f63d434cebafc361e3c52

SHA256
ba032ed5626d322ec16eabf59757becd98f23503b54802130ebb6633eab30644

SHA512
df4f0fad0304aa7ab74f77790c0f16e4f735de7efeb3055ffffd40a2e4bdfae7307e6bfedffc9a3840c75c30472f45f32a5772faa53aad07f934ea2504f738dd

Download Submit
memory/780-16-0x00007FFD22C10000-0x00007FFD236D2000-memory.dmp

Filesize
10.8MB

Download
memory/780-12-0x00007FFD22C10000-0x00007FFD236D2000-memory.dmp

Filesize
10.8MB

Download
memory/780-11-0x00007FFD22C10000-0x00007FFD236D2000-memory.dmp

Filesize
10.8MB

Download
memory/780-13-0x00007FFD22C10000-0x00007FFD236D2000-memory.dmp

Filesize
10.8MB

Download
memory/780-7-0x0000022DDF890000-0x0000022DDF8B2000-memory.dmp

Filesize
136KB

Download
memory/5256-0-0x00007FFD22C13000-0x00007FFD22C15000-memory.dmp

Filesize
8KB

Download
memory/5256-63-0x00007FFD22C10000-0x00007FFD236D2000-memory.dmp

Filesize
10.8MB

Download
memory/5256-54-0x00007FFD22C10000-0x00007FFD236D2000-memory.dmp

Filesize
10.8MB

Download
memory/5256-53-0x00007FFD22C13000-0x00007FFD22C15000-memory.dmp

Filesize
8KB

Download
memory/5256-1-0x00000000006B0000-0x00000000006C2000-memory.dmp

Filesize
72KB

Download
memory/5256-52-0x00007FFD22C10000-0x00007FFD236D2000-memory.dmp

Filesize
10.8MB

Download