Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-11-2024 03:30

General

  • Target

    b3e4b1be3d6271f8a68b21809b3b8acaeb5a80541a79944f2f466b61109d059c.exe

  • Size

    11.5MB

  • MD5

    2213447d6a5b56dbbcce43b7e3a6e641

  • SHA1

    f0bbf609b5c3182a17a6a5878283e025b23f233f

  • SHA256

    b3e4b1be3d6271f8a68b21809b3b8acaeb5a80541a79944f2f466b61109d059c

  • SHA512

    d229231148dfe8509272f2c7f4eeb3c7b4e5edeb9fa652989b06ffb2621244af438939d3cf166d24c0f5f5ab14585adf95d738a32dfa4886ce5502dd4370006d

  • SSDEEP

    196608:FAQuVH3M82sRhWphk2XmH24Wgf7TInXinHuE50PbdtwsmrKVveZleGxzLVyyqg:GLxM8r22PvInXinHuK0xCKVvetRVl

Malware Config

Extracted

Family

bdaejec

C2

ddos.dnsnb8.net

Signatures

  • Bdaejec

    Bdaejec is a backdoor written in C++.

  • Bdaejec family
  • Detects Bdaejec Backdoor. 2 IoCs

    Bdaejec is backdoor written in C++.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • 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.

  • Executes dropped EXE 1 IoCs
  • Themida packer 19 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b3e4b1be3d6271f8a68b21809b3b8acaeb5a80541a79944f2f466b61109d059c.exe
    "C:\Users\Admin\AppData\Local\Temp\b3e4b1be3d6271f8a68b21809b3b8acaeb5a80541a79944f2f466b61109d059c.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Users\Admin\AppData\Local\Temp\nBkKZr.exe
      C:\Users\Admin\AppData\Local\Temp\nBkKZr.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3900
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\43ae54fe.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VKYZDMA5\k2[1].rar

    Filesize

    4B

    MD5

    d3b07384d113edec49eaa6238ad5ff00

    SHA1

    f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

    SHA256

    b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

    SHA512

    0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

  • C:\Users\Admin\AppData\Local\Temp\04021214.exe

    Filesize

    4B

    MD5

    20879c987e2f9a916e578386d499f629

    SHA1

    c7b33ddcc42361fdb847036fc07e880b81935d5d

    SHA256

    9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

    SHA512

    bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

  • C:\Users\Admin\AppData\Local\Temp\43ae54fe.bat

    Filesize

    187B

    MD5

    347444adfd7755663dd71a9e9da6ea1b

    SHA1

    019f15893947b952c54d92d57ac4cea48d550941

    SHA256

    6a438793c6c1804dbfd166055f830477db03ea3a110102876eec1a67c9da2954

    SHA512

    7c500cbee8ec00648c3694c0dc04539a9402976ae27d4507ac85e8b58f7b087dd6908d606c0553415422b47039e0864954cef89802ed08bc75b182587c27ca51

  • C:\Users\Admin\AppData\Local\Temp\nBkKZr.exe

    Filesize

    15KB

    MD5

    56b2c3810dba2e939a8bb9fa36d3cf96

    SHA1

    99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

    SHA256

    4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

    SHA512

    27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

  • memory/2240-61-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-69-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-16-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-18-0x0000000010000000-0x0000000010116000-memory.dmp

    Filesize

    1.1MB

  • memory/2240-8-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-7-0x0000000076F64000-0x0000000076F66000-memory.dmp

    Filesize

    8KB

  • memory/2240-75-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-74-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-5-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-62-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-63-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-64-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-65-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-66-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-67-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-68-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-15-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-70-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-71-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-72-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/2240-73-0x0000000000400000-0x00000000016E2000-memory.dmp

    Filesize

    18.9MB

  • memory/3900-6-0x0000000000310000-0x0000000000319000-memory.dmp

    Filesize

    36KB

  • memory/3900-59-0x0000000000310000-0x0000000000319000-memory.dmp

    Filesize

    36KB