Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-04-2024 11:41

General

  • Target

    inst.exe

  • Size

    5.3MB

  • MD5

    2ec92d9ae90fa8d467434d4950046233

  • SHA1

    a1201629f91ce9d57539e1574548222f3aca9b17

  • SHA256

    0b06f84f2776bf4e4c28e73625defe855d3817b1de1a17183db39016f7109695

  • SHA512

    2b1b0284ab697aa0da00b670cdff68beeb48d9fe9b39dea21562ccff29eba958e3ce08ee7c07cdfa0b82f2cf42fe43f4c4ba75d62eb2215023354cb1a70553f9

  • SSDEEP

    98304:vNN/N91h2eDZQjL7sU8I5DKBWoClkRGJewd8Y3evBQ9LtYVrEx3/o6ETgKbWyuk:B9GeDVI5DKBWZlkgJedYs6LtYdEhqTgY

Malware Config

Signatures

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

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 1 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Themida packer 15 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\inst.exe
    "C:\Users\Admin\AppData\Local\Temp\inst.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks computer location settings
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2720
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\inst.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1500
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'inst.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4672

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    62623d22bd9e037191765d5083ce16a3

    SHA1

    4a07da6872672f715a4780513d95ed8ddeefd259

    SHA256

    95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

    SHA512

    9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d4bqk41s.qji.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\c3151015-52f5-4d47-88a4-ea55aea0d52a\AgileDotNetRT64.dll

    Filesize

    2.9MB

    MD5

    9bb6ed08af544d3738e60200d2804180

    SHA1

    5a40b484ca56b1ce59add4ec283e21d60070be02

    SHA256

    86d49f3894cc3de038abcde03803de8b6f239c237f34930ce5c41ab725c26cb7

    SHA512

    63e6b90457c3e3e6e419e30fe57e35c66e08059611fbe4ffb60d28acd6ee8d9f0ccfa31d7b27e9af44ab13512490f3b7b7f5130df947c5de50a937dcee0a91a5

  • memory/1500-25-0x000001957D160000-0x000001957D170000-memory.dmp

    Filesize

    64KB

  • memory/1500-28-0x00007FFA26110000-0x00007FFA26BD1000-memory.dmp

    Filesize

    10.8MB

  • memory/1500-22-0x000001957D3E0000-0x000001957D402000-memory.dmp

    Filesize

    136KB

  • memory/1500-23-0x00007FFA26110000-0x00007FFA26BD1000-memory.dmp

    Filesize

    10.8MB

  • memory/1500-24-0x000001957D160000-0x000001957D170000-memory.dmp

    Filesize

    64KB

  • memory/2720-50-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-52-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-11-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-9-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-2-0x0000000003180000-0x0000000003190000-memory.dmp

    Filesize

    64KB

  • memory/2720-60-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-58-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-57-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-0-0x0000000000B70000-0x00000000010BA000-memory.dmp

    Filesize

    5.3MB

  • memory/2720-56-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-45-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-46-0x00007FFA26110000-0x00007FFA26BD1000-memory.dmp

    Filesize

    10.8MB

  • memory/2720-47-0x0000000003180000-0x0000000003190000-memory.dmp

    Filesize

    64KB

  • memory/2720-48-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-49-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-1-0x00007FFA26110000-0x00007FFA26BD1000-memory.dmp

    Filesize

    10.8MB

  • memory/2720-12-0x00007FFA249C0000-0x00007FFA24B0E000-memory.dmp

    Filesize

    1.3MB

  • memory/2720-53-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-54-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/2720-55-0x00007FFA214B0000-0x00007FFA21C62000-memory.dmp

    Filesize

    7.7MB

  • memory/4672-44-0x00007FFA26110000-0x00007FFA26BD1000-memory.dmp

    Filesize

    10.8MB

  • memory/4672-32-0x0000022468A80000-0x0000022468A90000-memory.dmp

    Filesize

    64KB

  • memory/4672-31-0x0000022468A80000-0x0000022468A90000-memory.dmp

    Filesize

    64KB

  • memory/4672-30-0x00007FFA26110000-0x00007FFA26BD1000-memory.dmp

    Filesize

    10.8MB