xworm | eed43c12866f5d2d70382ccd10a07670e4b935885a3dbf375da38b8924339b0d

Analysis

max time kernel
134s
max time network
104s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 17:15

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General

Target
Solara v2.exe
Size 230KB
Sample240605-vshpladf38
SHA256 eed43c12866f5d2d70382ccd10a07670e4b935885a3dbf375da38b8924339b0d
MD5 2c97e31fdc209f1ae51f1dc93a7993a7
SHA1 fc6214f6e91809aaf29fa39cc6a0ebd09fa35909
SHA512 17d0b2244ceeb9d0d7cc75529a071bf4208b8b8b7d77d69f4639e5f2c2c8e66f81fc5a49689741caae9967a23877e0841f4aeb139471bd46f5ba95cdb9b6a415
SSDEEP 3072:H/FnmqDWX+bSdKsmCOEtrH8SKfbzxcwg7es6/Vsb8VKTu549oJMfF/H9N3Ky9Nz8:nDWub5kUhcX7elbKTua9bfF/H9d9n
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

takes-stewart.gl.at.ply.gg:61176

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4256-1-0x00000000003C0000-0x00000000003FE000-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
2928	powershell.exe
4672	powershell.exe
2968	powershell.exe
3924	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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	Solara v2.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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	Solara v2.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2928	powershell.exe
2928	powershell.exe
4672	powershell.exe
4672	powershell.exe
2968	powershell.exe
2968	powershell.exe
3924	powershell.exe
3924	powershell.exe
4256	Solara v2.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4256	Solara v2.exe
Token: SeDebugPrivilege	2928	powershell.exe
Token: SeDebugPrivilege	4672	powershell.exe
Token: SeDebugPrivilege	2968	powershell.exe
Token: SeDebugPrivilege	3924	powershell.exe
Token: SeDebugPrivilege	4256	Solara v2.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4256	Solara v2.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4256 wrote to memory of 2928	4256	Solara v2.exe	90
PID 4256 wrote to memory of 2928	4256	Solara v2.exe	90
PID 4256 wrote to memory of 4672	4256	Solara v2.exe	93
PID 4256 wrote to memory of 4672	4256	Solara v2.exe	93
PID 4256 wrote to memory of 2968	4256	Solara v2.exe	97
PID 4256 wrote to memory of 2968	4256	Solara v2.exe	97
PID 4256 wrote to memory of 3924	4256	Solara v2.exe	99
PID 4256 wrote to memory of 3924	4256	Solara v2.exe	99

C:\Users\Admin\AppData\Local\Temp\Solara v2.exe
"C:\Users\Admin\AppData\Local\Temp\Solara v2.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4256
- 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 v2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2928
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Solara v2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4672
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2968
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
MD5 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d
MD5 34f595487e6bfd1d11c7de88ee50356a
SHA1 4caad088c15766cc0fa1f42009260e9a02f953bb
SHA512 10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 bdad2d4c1b3475754cb3b9ef41a9eda243f46e30117539f81399c977a459b570
MD5 6e09573715495338a569f0316d59af57
SHA1 1a9fd3073801c241b276cdb8b3d7035afbcd0c8d
SHA512 61add4e0cfef5f138e95f0d941c39c0bce038a47fbc262d5622a0fdf46621231653adfcca3b81bef3a662a37c288e1e9644bed44591551aea5399a370afaeced
MD5 SHA1 SHA512

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__PSScriptPolicyTest_apa32qo4.ewh.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_apa32qo4.ewh.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2928-2-0x000001E8AE7F0000-0x000001E8AE812000-memory.dmp

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memory/2928-14-0x00007FFE314C0000-0x00007FFE31F81000-memory.dmp

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memory/2928-17-0x00007FFE314C0000-0x00007FFE31F81000-memory.dmp

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memory/2928-13-0x00007FFE314C0000-0x00007FFE31F81000-memory.dmp

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memory/2928-12-0x00007FFE314C0000-0x00007FFE31F81000-memory.dmp

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memory/2968-41-0x000001E623110000-0x000001E62332C000-memory.dmp

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memory/4256-0-0x00007FFE314C3000-0x00007FFE314C5000-memory.dmp

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memory/4256-1-0x00000000003C0000-0x00000000003FE000-memory.dmp

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memory/4256-54-0x00007FFE314C0000-0x00007FFE31F81000-memory.dmp

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memory/4256-56-0x00007FFE314C0000-0x00007FFE31F81000-memory.dmp

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