xworm | 53ffbe2e9c08961a21157be3a79fe0a33d19ec4bdae8cf2dc62c27f1fa4097df

General

Target

SolaraBootstrapper.exe
Size

255KB
MD5

e03c1771945c884883a82704a93ca453
SHA1

78609d9940ec6e59db7961ec2ac859c68ce81186
SHA256

53ffbe2e9c08961a21157be3a79fe0a33d19ec4bdae8cf2dc62c27f1fa4097df
SHA512

ed063720d08c2cd8b674101b5d457795ec570fee19c1e0747fd708428f7b8ae9736cfc02ace2fdc0040cc15019163fa86fba22147c68d77fc22be95d3343ab6d
SSDEEP

3072:sH++bXekOTbSiLvAzII9x66AOag74srxxVfPWKvQIFY623:snbGCqONxTGqQI+62

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

23.ip.gl.ply.gg:7972

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2772-1-0x0000000000360000-0x00000000003A6000-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
2684	powershell.exe
2732	powershell.exe
392	powershell.exe
2908	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	SolaraBootstrapper.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	SolaraBootstrapper.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	SolaraBootstrapper.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2908	powershell.exe
2684	powershell.exe
2732	powershell.exe
392	powershell.exe
2772	SolaraBootstrapper.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2772	SolaraBootstrapper.exe
Token: SeDebugPrivilege	2908	powershell.exe
Token: SeDebugPrivilege	2684	powershell.exe
Token: SeDebugPrivilege	2732	powershell.exe
Token: SeDebugPrivilege	392	powershell.exe
Token: SeDebugPrivilege	2772	SolaraBootstrapper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2772	SolaraBootstrapper.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 2908	2772	SolaraBootstrapper.exe	30
PID 2772 wrote to memory of 2908	2772	SolaraBootstrapper.exe	30
PID 2772 wrote to memory of 2908	2772	SolaraBootstrapper.exe	30
PID 2772 wrote to memory of 2684	2772	SolaraBootstrapper.exe	32
PID 2772 wrote to memory of 2684	2772	SolaraBootstrapper.exe	32
PID 2772 wrote to memory of 2684	2772	SolaraBootstrapper.exe	32
PID 2772 wrote to memory of 2732	2772	SolaraBootstrapper.exe	34
PID 2772 wrote to memory of 2732	2772	SolaraBootstrapper.exe	34
PID 2772 wrote to memory of 2732	2772	SolaraBootstrapper.exe	34
PID 2772 wrote to memory of 392	2772	SolaraBootstrapper.exe	36
PID 2772 wrote to memory of 392	2772	SolaraBootstrapper.exe	36
PID 2772 wrote to memory of 392	2772	SolaraBootstrapper.exe	36

C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.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:2772
- 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\SolaraBootstrapper.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2908
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SolaraBootstrapper.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2684
- 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:2732
- 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:392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
bfaa3737ee4e9d8b8a90b4e6572435a3

SHA1
6d4fbb338f5685cd1c41b7b88ddad8c6d142f632

SHA256
5103762441671d1b55b5094fca3864248e7d88017ae91f0d1239a7cc5296d7d0

SHA512
243bced436908e9f3bfe4c352d7e2e136953f4a55ef32721792a3beade24625c18762ae45c5faddc7bb1195358f82738b19156de25cfec29b7ac5733b47346ad

Download Submit
memory/2684-14-0x000000001B2B0000-0x000000001B592000-memory.dmp

Filesize
2.9MB

Download
memory/2684-15-0x00000000024E0000-0x00000000024E8000-memory.dmp

Filesize
32KB

Download
memory/2772-0-0x000007FEF5583000-0x000007FEF5584000-memory.dmp

Filesize
4KB

Download
memory/2772-1-0x0000000000360000-0x00000000003A6000-memory.dmp

Filesize
280KB

Download
memory/2772-26-0x000007FEF5583000-0x000007FEF5584000-memory.dmp

Filesize
4KB

Download
memory/2772-31-0x000000001B160000-0x000000001B1E0000-memory.dmp

Filesize
512KB

Download
memory/2772-32-0x000000001B160000-0x000000001B1E0000-memory.dmp

Filesize
512KB

Download
memory/2908-6-0x0000000001FB0000-0x0000000002030000-memory.dmp

Filesize
512KB

Download
memory/2908-7-0x000000001B300000-0x000000001B5E2000-memory.dmp

Filesize
2.9MB

Download
memory/2908-8-0x0000000002510000-0x0000000002518000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads