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Analysis

  • max time kernel
    719s
  • max time network
    894s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    01/01/2025, 21:06

General

  • Target

    AimAssist.exe

  • Size

    839KB

  • MD5

    9232f68810b230913f7b46b2db02d8a1

  • SHA1

    afece387cdf0f80acf98f57589234b584a8e13c4

  • SHA256

    8e2de94aa59d77bb4ba00b39e5b4dddf69321a558975388c666f51084339a03e

  • SHA512

    8169ccfd632b590040335c5b59db1a9a50d477795c4e00c49ba3b846e3d2cdc839e3cc2e3f2ebc8450d8f9bced96e596d11cd74cf5a789d29ba49476364f5488

  • SSDEEP

    24576:SxdS04YNEMuExDiU6E5R9s8xY/2l/d2tnIbt+r2:GP4auS+UjfU2T2dIbt+r

Malware Config

Extracted

Family

orcus

C2

3buy-response.gl.at.ply.gg

Mutex

20bafa3dc96e4ee8b82bbe11a3472987

Attributes
  • administration_rights_required

    false

  • anti_debugger

    false

  • anti_tcp_analyzer

    false

  • antivm

    false

  • autostart_method

    1

  • change_creation_date

    false

  • force_installer_administrator_privileges

    false

  • hide_file

    false

  • install

    false

  • installation_folder

    %appdata%\Microsoft\Speech\AudioDriver.exe

  • installservice

    false

  • keylogger_enabled

    false

  • newcreationdate

    01/01/2025 13:05:49

  • plugins

    AgEAAA==

  • reconnect_delay

    10000

  • registry_autostart_keyname

    Audio HD Driver

  • registry_hidden_autostart

    false

  • set_admin_flag

    false

  • tasksch_name

    Audio HD Driver

  • tasksch_request_highest_privileges

    false

  • try_other_autostart_onfail

    false

aes.plain

Signatures

  • Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

  • Orcus family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AimAssist.exe
    "C:\Users\Admin\AppData\Local\Temp\AimAssist.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1476

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabF97E.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • \Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

    Filesize

    839KB

    MD5

    9232f68810b230913f7b46b2db02d8a1

    SHA1

    afece387cdf0f80acf98f57589234b584a8e13c4

    SHA256

    8e2de94aa59d77bb4ba00b39e5b4dddf69321a558975388c666f51084339a03e

    SHA512

    8169ccfd632b590040335c5b59db1a9a50d477795c4e00c49ba3b846e3d2cdc839e3cc2e3f2ebc8450d8f9bced96e596d11cd74cf5a789d29ba49476364f5488

  • memory/1476-11-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/1476-13-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/1476-14-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/1476-31-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/1476-32-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/1476-33-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/1476-34-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2100-2-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2100-12-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB

  • memory/2100-0-0x00000000744E1000-0x00000000744E2000-memory.dmp

    Filesize

    4KB

  • memory/2100-1-0x00000000744E0000-0x0000000074A8B000-memory.dmp

    Filesize

    5.7MB