xworm | def6f4ec76d2069322983c6eca95a313cb9a8d2456447dae67db7cb1dfe3acdd

Reason

Machine shutdown

General

Target

Solara.exe
Size

439KB
MD5

bbc212bd99b3cdbdf9ebea621b2ec078
SHA1

31b3bd37ea5c37ee034ed92c3643fef177b130e5
SHA256

def6f4ec76d2069322983c6eca95a313cb9a8d2456447dae67db7cb1dfe3acdd
SHA512

286e2dbe13d9e3732406bda3d55a1a673deb1c8f81669d8d8dc1d2bc5e30f2e8dbd13fc59bef3d13417afc1427243c51223d754422b2efd45b20600987c11737
SSDEEP

1536:Y52g9057DKXIvjKqx+bSIijoJLU6Bv0JVOfCTPnlp4Z9l:42V8q+bSIjv07Oq734ZP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:13970

accessories-retrieve.gl.at.ply.gg:13970

Attributes

Install_directory
%AppData%
install_file
Loader.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/4548-1-0x00000000006B0000-0x0000000000724000-memory.dmp	family_xworm
behavioral1/files/0x000d000000023417-58.dat	family_xworm
behavioral1/memory/4548-62-0x000000001D870000-0x000000001D8E4000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
4220	powershell.exe
1136	powershell.exe
2124	powershell.exe
1428	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	Solara.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
628	Loader.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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Loader = "C:\\Users\\Admin\\AppData\\Roaming\\Loader.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
4068	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4220	powershell.exe
4220	powershell.exe
1136	powershell.exe
1136	powershell.exe
2124	powershell.exe
2124	powershell.exe
1428	powershell.exe
1428	powershell.exe
4548	Solara.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4548	Solara.exe
Token: SeDebugPrivilege	4220	powershell.exe
Token: SeDebugPrivilege	1136	powershell.exe
Token: SeDebugPrivilege	2124	powershell.exe
Token: SeDebugPrivilege	1428	powershell.exe
Token: SeDebugPrivilege	4548	Solara.exe
Token: SeDebugPrivilege	628	Loader.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4548	Solara.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4548 wrote to memory of 4220	4548	Solara.exe	90
PID 4548 wrote to memory of 4220	4548	Solara.exe	90
PID 4548 wrote to memory of 1136	4548	Solara.exe	93
PID 4548 wrote to memory of 1136	4548	Solara.exe	93
PID 4548 wrote to memory of 2124	4548	Solara.exe	95
PID 4548 wrote to memory of 2124	4548	Solara.exe	95
PID 4548 wrote to memory of 1428	4548	Solara.exe	98
PID 4548 wrote to memory of 1428	4548	Solara.exe	98
PID 4548 wrote to memory of 4068	4548	Solara.exe	100
PID 4548 wrote to memory of 4068	4548	Solara.exe	100

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:4548
- 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:4220
- 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:1136
- 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\Loader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2124
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Loader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1428
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Loader" /tr "C:\Users\Admin\AppData\Roaming\Loader.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4068

C:\Users\Admin\AppData\Roaming\Loader.exe
C:\Users\Admin\AppData\Roaming\Loader.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:628

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
b51dc9e5ec3c97f72b4ca9488bbb4462

SHA1
5c1e8c0b728cd124edcacefb399bbd5e25b21bd3

SHA256
976f9534aa2976c85c2455bdde786a3f55d63aefdd40942eba1223c4c93590db

SHA512
0e5aa6cf64c535aefb833e5757b68e1094c87424abe2615a7d7d26b1b31eff358d12e36e75ca57fd690a9919b776600bf4c5c0e5a5df55366ba62238bdf3f280

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

Filesize
944B

MD5
7d9ecfe610b58440e18d2bffe5167d71

SHA1
7afeed064042ef5e614228f678a0c595699c3d84

SHA256
2c42082be2718281fe2a2bf0136bf417ff214ce7c36bc22a40d23adb1d026632

SHA512
017a63c4b81cd256adec796b9258fbae464d32af59cb654a81dd157e02896f50a252c25b6eac07fc6cb44a493b477e7debfaf9999c854dbd3fb34e24ef443c29

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mcwpvhrm.uom.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
439KB

MD5
bbc212bd99b3cdbdf9ebea621b2ec078

SHA1
31b3bd37ea5c37ee034ed92c3643fef177b130e5

SHA256
def6f4ec76d2069322983c6eca95a313cb9a8d2456447dae67db7cb1dfe3acdd

SHA512
286e2dbe13d9e3732406bda3d55a1a673deb1c8f81669d8d8dc1d2bc5e30f2e8dbd13fc59bef3d13417afc1427243c51223d754422b2efd45b20600987c11737

Download Submit
memory/4220-12-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/4220-17-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/4220-14-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/4220-13-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/4220-9-0x000002C644E30000-0x000002C644E52000-memory.dmp

Filesize
136KB

Download
memory/4548-0-0x00007FFEAD823000-0x00007FFEAD825000-memory.dmp

Filesize
8KB

Download
memory/4548-56-0x00007FFEAD823000-0x00007FFEAD825000-memory.dmp

Filesize
8KB

Download
memory/4548-57-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/4548-1-0x00000000006B0000-0x0000000000724000-memory.dmp

Filesize
464KB

Download
memory/4548-61-0x00007FFEAD820000-0x00007FFEAE2E1000-memory.dmp

Filesize
10.8MB

Download
memory/4548-62-0x000000001D870000-0x000000001D8E4000-memory.dmp

Filesize
464KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads