xworm | 6d7a1d6a51fcb0bf6ef1068a108f53b492337f63cad4555d706e835da63519a9

General

Target

Solara.exe
Size

44KB
MD5

1150929a02621ff0d0be6733e29384b9
SHA1

492a4b13def38b1b62c41450a3b885a18c979c52
SHA256

6d7a1d6a51fcb0bf6ef1068a108f53b492337f63cad4555d706e835da63519a9
SHA512

a98cb8995b4634e9d8fb636be85715aac9012b9809f8fb294900e3380660379575ab33c4d01b79ddf9508afa6e03847bdf26b242dbb45bcc6cd79c49486b3639
SSDEEP

768:ohMJ+n2DNw1N1QbEblsUUdvFFRPG9+h2P/6OOChEvmbWT:QMUn2uBEbvFw9+8/6OOC+uiT

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:46867

10.9.76.6:46867

192.168.56.1:46867

192.168.1.6:46867

172.23.0.1:46867

disease-tattoo.gl.at.ply.gg:46867

Mutex

g7MF6jpeNipSWFbJ

Attributes

Install_directory
%AppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2532-1-0x0000000000920000-0x0000000000932000-memory.dmp	family_xworm
behavioral1/files/0x000a0000000120fd-36.dat	family_xworm
behavioral1/memory/2936-38-0x0000000000A80000-0x0000000000A92000-memory.dmp	family_xworm
behavioral1/memory/824-41-0x00000000003F0000-0x0000000000402000-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
2776	powershell.exe
2860	powershell.exe
2676	powershell.exe
2584	powershell.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 2 IoCs

pid	Process
2936	svchost.exe
824	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-1-5-21-2703099537-420551529-3771253338-1000\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
1124	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2776	powershell.exe
2860	powershell.exe
2676	powershell.exe
2584	powershell.exe
2532	Solara.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	Solara.exe
Token: SeDebugPrivilege	2776	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	2532	Solara.exe
Token: SeDebugPrivilege	2936	svchost.exe
Token: SeDebugPrivilege	824	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2532	Solara.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2776	2532	Solara.exe	29
PID 2532 wrote to memory of 2776	2532	Solara.exe	29
PID 2532 wrote to memory of 2776	2532	Solara.exe	29
PID 2532 wrote to memory of 2860	2532	Solara.exe	31
PID 2532 wrote to memory of 2860	2532	Solara.exe	31
PID 2532 wrote to memory of 2860	2532	Solara.exe	31
PID 2532 wrote to memory of 2676	2532	Solara.exe	33
PID 2532 wrote to memory of 2676	2532	Solara.exe	33
PID 2532 wrote to memory of 2676	2532	Solara.exe	33
PID 2532 wrote to memory of 2584	2532	Solara.exe	35
PID 2532 wrote to memory of 2584	2532	Solara.exe	35
PID 2532 wrote to memory of 2584	2532	Solara.exe	35
PID 2532 wrote to memory of 1124	2532	Solara.exe	37
PID 2532 wrote to memory of 1124	2532	Solara.exe	37
PID 2532 wrote to memory of 1124	2532	Solara.exe	37
PID 2916 wrote to memory of 2936	2916	taskeng.exe	40
PID 2916 wrote to memory of 2936	2916	taskeng.exe	40
PID 2916 wrote to memory of 2936	2916	taskeng.exe	40
PID 2916 wrote to memory of 824	2916	taskeng.exe	42
PID 2916 wrote to memory of 824	2916	taskeng.exe	42
PID 2916 wrote to memory of 824	2916	taskeng.exe	42

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:2532
- 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:2776
- 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:2860
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2676
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2584
- 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"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1124

C:\Windows\system32\taskeng.exe
taskeng.exe {939A1482-9C53-4ADE-BC95-F7C1F2B429E0} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
732adba27b27458bc52392c77ba8cff2

SHA1
0914e7dc30cccfd2f81d29023ed08b5d06933d5f

SHA256
22760fdc056298741fb309ddfd272e3136b411e32f8858d9a67c71080f47d61d

SHA512
ca0664cc81f091f8892bfcc338e34d85df45886411f9f28c74ed8d80aa0f3743f97877dc253dfc192209825097ea909e051dd78fd683c76980fb2d78e1279589

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
44KB

MD5
1150929a02621ff0d0be6733e29384b9

SHA1
492a4b13def38b1b62c41450a3b885a18c979c52

SHA256
6d7a1d6a51fcb0bf6ef1068a108f53b492337f63cad4555d706e835da63519a9

SHA512
a98cb8995b4634e9d8fb636be85715aac9012b9809f8fb294900e3380660379575ab33c4d01b79ddf9508afa6e03847bdf26b242dbb45bcc6cd79c49486b3639

Download Submit
memory/824-41-0x00000000003F0000-0x0000000000402000-memory.dmp

Filesize
72KB

Download
memory/2532-32-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2532-1-0x0000000000920000-0x0000000000932000-memory.dmp

Filesize
72KB

Download
memory/2532-0-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

Filesize
4KB

Download
memory/2532-34-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2532-33-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

Filesize
4KB

Download
memory/2776-7-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2776-8-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2776-6-0x0000000002D40000-0x0000000002DC0000-memory.dmp

Filesize
512KB

Download
memory/2860-15-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2860-14-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2936-38-0x0000000000A80000-0x0000000000A92000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads