Analysis

  • max time kernel
    148s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    15-02-2022 15:01

General

  • Target

    21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37.exe

  • Size

    3.4MB

  • MD5

    7353d83c321cb341abed242c33856850

  • SHA1

    10207907f7cc70fc0735c0415f21590775fff835

  • SHA256

    21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37

  • SHA512

    275e19eaad5bdd067694d96e5bfe5e27079b6bfd8953ce3519fa5cb80a8b62add21c453a81a9bf7845dad0801871297db2d3de740ef8c74ef718faef5430544c

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Drops startup file 1 IoCs
  • Themida packer 8 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 49 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37.exe
    "C:\Users\Admin\AppData\Local\Temp\21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37.exe"
    1⤵
    • Checks BIOS information in registry
    • Drops startup file
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of WriteProcessMemory
    PID:3804
    • C:\Users\Admin\AppData\Roaming\Intel Rapid\IntelRapid.exe
      "C:\Users\Admin\AppData\Roaming\Intel Rapid\IntelRapid.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: AddClipboardFormatListener
      PID:3736
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1548
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:1828
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:3524

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Intel Rapid\IntelRapid.exe
    MD5

    7353d83c321cb341abed242c33856850

    SHA1

    10207907f7cc70fc0735c0415f21590775fff835

    SHA256

    21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37

    SHA512

    275e19eaad5bdd067694d96e5bfe5e27079b6bfd8953ce3519fa5cb80a8b62add21c453a81a9bf7845dad0801871297db2d3de740ef8c74ef718faef5430544c

  • C:\Users\Admin\AppData\Roaming\Intel Rapid\IntelRapid.exe
    MD5

    7353d83c321cb341abed242c33856850

    SHA1

    10207907f7cc70fc0735c0415f21590775fff835

    SHA256

    21a8f01c939e887621a2e3b25ab165a135a842a695fbaec75a1cf13a67fabd37

    SHA512

    275e19eaad5bdd067694d96e5bfe5e27079b6bfd8953ce3519fa5cb80a8b62add21c453a81a9bf7845dad0801871297db2d3de740ef8c74ef718faef5430544c

  • memory/3736-136-0x00007FF7E1270000-0x00007FF7E1BD3000-memory.dmp
    Filesize

    9.4MB

  • memory/3736-137-0x00007FF7E1270000-0x00007FF7E1BD3000-memory.dmp
    Filesize

    9.4MB

  • memory/3736-138-0x00007FF7E1270000-0x00007FF7E1BD3000-memory.dmp
    Filesize

    9.4MB

  • memory/3804-130-0x00007FF646D20000-0x00007FF647683000-memory.dmp
    Filesize

    9.4MB

  • memory/3804-132-0x00007FFB54A90000-0x00007FFB54A92000-memory.dmp
    Filesize

    8KB

  • memory/3804-131-0x00007FF646D20000-0x00007FF647683000-memory.dmp
    Filesize

    9.4MB

  • memory/3804-133-0x00007FF646D20000-0x00007FF647683000-memory.dmp
    Filesize

    9.4MB