xworm | 834bcea2665dc99b4c16fe87095f3e2b44e2e013ec1017407a061a1203c2f3cf

General

Target

SolaraX.exe
Size

74KB
MD5

aef41983064b12d1e648100e8141bf19
SHA1

b258d4a810e818e9c9dcaba62f75f34036b60fcd
SHA256

834bcea2665dc99b4c16fe87095f3e2b44e2e013ec1017407a061a1203c2f3cf
SHA512

2e4e3fdf7cd1892b73cf1989dfd82d91c677653a4501f44bb2d74b153b72982e069998b5bef097a7645970838c13ac86ec546173f6baf3afb7cbc26e6c9d5524
SSDEEP

1536:CSwcF9ZPLxJfu4OjKOd5fbLioM5706leROrV3P7UN:dwcF9ZPG4O+Od5fbLilveROrpw

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:34930

minimum-ball.gl.at.ply.gg:34930

Attributes

Install_directory
%AppData%
install_file
SolaraX.exe

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/1968-1-0x0000000000C20000-0x0000000000C38000-memory.dmp	family_xworm
behavioral1/files/0x0009000000012117-34.dat	family_xworm
behavioral1/memory/1748-36-0x00000000003B0000-0x00000000003C8000-memory.dmp	family_xworm
behavioral1/memory/348-41-0x0000000000D60000-0x0000000000D78000-memory.dmp	family_xworm
behavioral1/memory/2080-43-0x0000000001280000-0x0000000001298000-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
2652	powershell.exe
2428	powershell.exe
2756	powershell.exe
2832	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
1748	SolaraX.exe
348	SolaraX.exe
2080	SolaraX.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SolaraX = "C:\\Users\\Admin\\AppData\\Roaming\\SolaraX.exe"	SolaraX.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
1960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2428	powershell.exe
2756	powershell.exe
2832	powershell.exe
2652	powershell.exe
1968	SolaraX.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	SolaraX.exe
Token: SeDebugPrivilege	2428	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2832	powershell.exe
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	1968	SolaraX.exe
Token: SeDebugPrivilege	1748	SolaraX.exe
Token: SeDebugPrivilege	348	SolaraX.exe
Token: SeDebugPrivilege	2080	SolaraX.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1968	SolaraX.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2428	1968	SolaraX.exe	30
PID 1968 wrote to memory of 2428	1968	SolaraX.exe	30
PID 1968 wrote to memory of 2428	1968	SolaraX.exe	30
PID 1968 wrote to memory of 2756	1968	SolaraX.exe	32
PID 1968 wrote to memory of 2756	1968	SolaraX.exe	32
PID 1968 wrote to memory of 2756	1968	SolaraX.exe	32
PID 1968 wrote to memory of 2832	1968	SolaraX.exe	34
PID 1968 wrote to memory of 2832	1968	SolaraX.exe	34
PID 1968 wrote to memory of 2832	1968	SolaraX.exe	34
PID 1968 wrote to memory of 2652	1968	SolaraX.exe	36
PID 1968 wrote to memory of 2652	1968	SolaraX.exe	36
PID 1968 wrote to memory of 2652	1968	SolaraX.exe	36
PID 1968 wrote to memory of 1960	1968	SolaraX.exe	38
PID 1968 wrote to memory of 1960	1968	SolaraX.exe	38
PID 1968 wrote to memory of 1960	1968	SolaraX.exe	38
PID 1632 wrote to memory of 1748	1632	taskeng.exe	41
PID 1632 wrote to memory of 1748	1632	taskeng.exe	41
PID 1632 wrote to memory of 1748	1632	taskeng.exe	41
PID 1632 wrote to memory of 348	1632	taskeng.exe	44
PID 1632 wrote to memory of 348	1632	taskeng.exe	44
PID 1632 wrote to memory of 348	1632	taskeng.exe	44
PID 1632 wrote to memory of 2080	1632	taskeng.exe	45
PID 1632 wrote to memory of 2080	1632	taskeng.exe	45
PID 1632 wrote to memory of 2080	1632	taskeng.exe	45

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\SolaraX.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraX.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:1968
- 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\SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2428
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- 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\SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2832
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2652
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SolaraX" /tr "C:\Users\Admin\AppData\Roaming\SolaraX.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1960

C:\Windows\system32\taskeng.exe
taskeng.exe {06B08DF3-8852-4016-90B2-CE4B07571797} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Users\Admin\AppData\Roaming\SolaraX.exe
  C:\Users\Admin\AppData\Roaming\SolaraX.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1748
- C:\Users\Admin\AppData\Roaming\SolaraX.exe
  C:\Users\Admin\AppData\Roaming\SolaraX.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:348
- C:\Users\Admin\AppData\Roaming\SolaraX.exe
  C:\Users\Admin\AppData\Roaming\SolaraX.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2080

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
c7b64519c421f6b3384411db82a1c3f1

SHA1
eb753b46556733af381e056801ec544530c92590

SHA256
c1d8ffddff771454ef487b749f7d578112a6f0e981fcf3f61c7c51596beed146

SHA512
a4ffd7e9f003ce8e850b33d3ed3819f1de2584eb6cb06ed8ff883bb362fb59d7430dd22e96eb88970c519fb87685ddf69bece7eed488f7b0bd6b7c16a48fde94

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

Filesize
74KB

MD5
aef41983064b12d1e648100e8141bf19

SHA1
b258d4a810e818e9c9dcaba62f75f34036b60fcd

SHA256
834bcea2665dc99b4c16fe87095f3e2b44e2e013ec1017407a061a1203c2f3cf

SHA512
2e4e3fdf7cd1892b73cf1989dfd82d91c677653a4501f44bb2d74b153b72982e069998b5bef097a7645970838c13ac86ec546173f6baf3afb7cbc26e6c9d5524

Download Submit
memory/348-41-0x0000000000D60000-0x0000000000D78000-memory.dmp

Filesize
96KB

Download
memory/1748-36-0x00000000003B0000-0x00000000003C8000-memory.dmp

Filesize
96KB

Download
memory/1968-37-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download
memory/1968-32-0x0000000000550000-0x00000000005D0000-memory.dmp

Filesize
512KB

Download
memory/1968-0-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download
memory/1968-38-0x0000000000550000-0x00000000005D0000-memory.dmp

Filesize
512KB

Download
memory/1968-1-0x0000000000C20000-0x0000000000C38000-memory.dmp

Filesize
96KB

Download
memory/2080-43-0x0000000001280000-0x0000000001298000-memory.dmp

Filesize
96KB

Download
memory/2428-8-0x00000000020C0000-0x00000000020C8000-memory.dmp

Filesize
32KB

Download
memory/2428-7-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/2428-6-0x0000000002930000-0x00000000029B0000-memory.dmp

Filesize
512KB

Download
memory/2756-14-0x000000001B520000-0x000000001B802000-memory.dmp

Filesize
2.9MB

Download
memory/2756-15-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads