Analysis

  • max time kernel
    483s
  • max time network
    489s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/08/2023, 11:05

General

  • Target

    Adobe Acrobat DC Setup.exe

  • Size

    3.6MB

  • MD5

    199601c1d96b5fcde87f700c4d2ed29b

  • SHA1

    1b59c81736b9ccebdb76bf826ab88dfd52f0dcd3

  • SHA256

    502571801e831f1f780c9b44bfc403f79f16de18f5b570d54816a5f9be0be22e

  • SHA512

    058ef1272748f339315d75f4ba474bb04231386e777ab60c8717a4fb8323eefcebd47798964efb34c11e1a3caf97480985889071635b440a94aa29ed32c94b2a

  • SSDEEP

    98304:cH/92AYawl1WPOl6NVLkJ0xECgR16/9NdBI:aljxYG9z

Malware Config

Extracted

Family

quasar

Attributes
  • reconnect_delay

    3000

Extracted

Family

quasar

Version

1.0

Botnet

PowerShell

C2

0.tcp.eu.ngrok.io:15101

Mutex

74e865e7-8aad-4e3d-9444-006353e7ca31

Attributes
  • encryption_key

    8A2A7B58F2803115FF796E733C7311493928333B

  • install_name

    launcher.exe

  • log_directory

    Windows Logs

  • reconnect_delay

    3000

  • startup_key

    Opera Launcher

  • subdirectory

    Opera Software

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Adobe Acrobat DC Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Adobe Acrobat DC Setup.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:4856
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /SC ONLOGON /tn PowerShell /tr %systemroot%\System32\WindowsPowerShell\v1.0\powershеll.exe
      2⤵
      • Creates scheduled task(s)
      PID:2720
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershеll.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershеll.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2872

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershеll.exe

          Filesize

          3.2MB

          MD5

          5db8ff057e7b3926bad10ee2a2501377

          SHA1

          5531cd789c3c0906957ced945f3e72501eb7e2f5

          SHA256

          ecd4a99e2844c0fe336a820ce67effd8d93e13c45fe3bae5b943d6d95833fc20

          SHA512

          fbf5001d18595de04b25e7fc983980dcd5f19d1e72e68174a2ca237786dc0d3575e8e1a9c332dda3acae51715c3f6259ca88b883a8fbbef3d1eeb30273ce8982

        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershеll.exe

          Filesize

          3.2MB

          MD5

          5db8ff057e7b3926bad10ee2a2501377

          SHA1

          5531cd789c3c0906957ced945f3e72501eb7e2f5

          SHA256

          ecd4a99e2844c0fe336a820ce67effd8d93e13c45fe3bae5b943d6d95833fc20

          SHA512

          fbf5001d18595de04b25e7fc983980dcd5f19d1e72e68174a2ca237786dc0d3575e8e1a9c332dda3acae51715c3f6259ca88b883a8fbbef3d1eeb30273ce8982

        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershеll.exe

          Filesize

          3.2MB

          MD5

          5db8ff057e7b3926bad10ee2a2501377

          SHA1

          5531cd789c3c0906957ced945f3e72501eb7e2f5

          SHA256

          ecd4a99e2844c0fe336a820ce67effd8d93e13c45fe3bae5b943d6d95833fc20

          SHA512

          fbf5001d18595de04b25e7fc983980dcd5f19d1e72e68174a2ca237786dc0d3575e8e1a9c332dda3acae51715c3f6259ca88b883a8fbbef3d1eeb30273ce8982

        • memory/2872-153-0x000000001AFC0000-0x000000001AFD0000-memory.dmp

          Filesize

          64KB

        • memory/2872-150-0x0000000000130000-0x0000000000462000-memory.dmp

          Filesize

          3.2MB

        • memory/2872-152-0x00007FFE4E1F0000-0x00007FFE4ECB1000-memory.dmp

          Filesize

          10.8MB

        • memory/2872-154-0x000000001B8E0000-0x000000001B930000-memory.dmp

          Filesize

          320KB

        • memory/2872-155-0x000000001B9F0000-0x000000001BAA2000-memory.dmp

          Filesize

          712KB

        • memory/2872-156-0x00007FFE4E1F0000-0x00007FFE4ECB1000-memory.dmp

          Filesize

          10.8MB

        • memory/2872-157-0x000000001AFC0000-0x000000001AFD0000-memory.dmp

          Filesize

          64KB

        • memory/4856-135-0x0000000005970000-0x0000000005A0C000-memory.dmp

          Filesize

          624KB

        • memory/4856-134-0x0000000000CD0000-0x0000000001074000-memory.dmp

          Filesize

          3.6MB

        • memory/4856-151-0x0000000075350000-0x0000000075B00000-memory.dmp

          Filesize

          7.7MB

        • memory/4856-133-0x0000000075350000-0x0000000075B00000-memory.dmp

          Filesize

          7.7MB