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Analysis

  • max time kernel
    120s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/12/2024, 23:23

General

  • Target

    808d2f83c7b699aa3fd06c208c44d9decaba701b000d40f7d8aa8ade1395bacfN.exe

  • Size

    634KB

  • MD5

    026ecb902b5b7f30506e32414daf1720

  • SHA1

    daae8c4583aac745d2246e88d3673770d3cf061c

  • SHA256

    808d2f83c7b699aa3fd06c208c44d9decaba701b000d40f7d8aa8ade1395bacf

  • SHA512

    0e55a5c8e81516825e2f71a9b7219ca06ddfd52cca5ab9b3e53b31b9fdf21d223ed118a9ba65722872b6de249d04e346966a9234867de2cd5ba4d85dea12851d

  • SSDEEP

    12288:PFUNDayA1X0y8ET2RUzcRg8EoVK4HJlA+X8qdwS/GaHTZfn/ZR:PFOayA1KEDzCg8EmTJlFXfTZfP

Malware Config

Extracted

Family

bdaejec

C2

ddos.dnsnb8.net

Signatures

  • Bdaejec

    Bdaejec is a backdoor written in C++.

  • Bdaejec family
  • Detects Bdaejec Backdoor. 1 IoCs

    Bdaejec is backdoor written in C++.

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 7 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\808d2f83c7b699aa3fd06c208c44d9decaba701b000d40f7d8aa8ade1395bacfN.exe
    "C:\Users\Admin\AppData\Local\Temp\808d2f83c7b699aa3fd06c208c44d9decaba701b000d40f7d8aa8ade1395bacfN.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1772
    • \??\c:\users\admin\appdata\local\temp\808d2f83c7b699aa3fd06c208c44d9decaba701b000d40f7d8aa8ade1395bacfn.exe 
      c:\users\admin\appdata\local\temp\808d2f83c7b699aa3fd06c208c44d9decaba701b000d40f7d8aa8ade1395bacfn.exe 
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2232
      • C:\Users\Admin\AppData\Local\Temp\XhmNEB.exe
        C:\Users\Admin\AppData\Local\Temp\XhmNEB.exe
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2420
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\2f5209dc.bat" "
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2964
    • C:\Windows\Resources\Themes\icsys.icn.exe
      C:\Windows\Resources\Themes\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2676
      • \??\c:\windows\resources\themes\explorer.exe
        c:\windows\resources\themes\explorer.exe
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1820
        • \??\c:\windows\resources\spoolsv.exe
          c:\windows\resources\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4268
          • \??\c:\windows\resources\svchost.exe
            c:\windows\resources\svchost.exe
            5⤵
            • Modifies visiblity of hidden/system files in Explorer
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in System32 directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1396
            • \??\c:\windows\resources\spoolsv.exe
              c:\windows\resources\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:4764

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\0BHOTC3C\k2[1].rar

    Filesize

    4B

    MD5

    d3b07384d113edec49eaa6238ad5ff00

    SHA1

    f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

    SHA256

    b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

    SHA512

    0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

  • C:\Users\Admin\AppData\Local\Temp\16956927.exe

    Filesize

    4B

    MD5

    20879c987e2f9a916e578386d499f629

    SHA1

    c7b33ddcc42361fdb847036fc07e880b81935d5d

    SHA256

    9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

    SHA512

    bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

  • C:\Users\Admin\AppData\Local\Temp\2f5209dc.bat

    Filesize

    187B

    MD5

    95c7ab139ef4e86cede4f50b9a8dec25

    SHA1

    22a611338b91811ed641a9b746b3a2986ead2f18

    SHA256

    98ac11b173d23c0f45f7f559044b952ad30bfb5c68bc572408232afb7e8ee853

    SHA512

    415a8206f27113a643974e9dd131845cbdcc7cd9f3929533a96e5b21784a6dcc8c664ceb64892ca845b3af07049524fa2716b14e415a51e3bfe8642161740f79

  • C:\Users\Admin\AppData\Local\Temp\808d2f83c7b699aa3fd06c208c44d9decaba701b000d40f7d8aa8ade1395bacfn.exe 

    Filesize

    499KB

    MD5

    fe1c73a64fff4bdf575f4a9118ebcfd6

    SHA1

    964a991f99d9131dbcee088dcfd520996fff2aef

    SHA256

    f19b8229adf7dfa9524eb1649acf7686482c4a0cf066de218d2569689a9a802f

    SHA512

    2f0f40541a4f039b1e3143d4ada19cba72f3586a9f98aa94a61765f7a0c20ca773904e3e089bb0fd2997f4be3fb0cd2af2929ec79d0535e19d72be8f696e978d

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

    Filesize

    15KB

    MD5

    56b2c3810dba2e939a8bb9fa36d3cf96

    SHA1

    99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

    SHA256

    4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

    SHA512

    27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

  • C:\Windows\Resources\Themes\explorer.exe

    Filesize

    135KB

    MD5

    fc4d8d5caa0f6986f2c13355d5df451d

    SHA1

    c7b485ac77edc523d19e90cacadd802d6524aa06

    SHA256

    2c2bcbffe2837e4351af5b735f49ac7f4029d07b375e016b1d8f4824321a1340

    SHA512

    62510ddba7b08cd29fac2c1dfbc2e23e1eb7d4114fffd2778d2475ca2d542b566c7d689f0ee4e195d09942e9d6eb0f777fb5f40df5c4346b621d044984894fe9

  • C:\Windows\Resources\Themes\icsys.icn.exe

    Filesize

    135KB

    MD5

    cf83fbea38390db07d284e1ac29176b4

    SHA1

    3c1fe39f8f1ddb2d28e9e1928bd5c2758a3254a2

    SHA256

    4e7f8c1c0a55c1dfe6e29bce4f110e89cc8c0174bc84144577c02f18a77b50de

    SHA512

    7de5089689f943a24fa5720ab63636c53a0e2d421995a9b9d99f2f5201705eb5ceff4872f8e113a739a319c229207dae9a231b4a7a39a4c61c9f2e67d77c553e

  • C:\Windows\Resources\spoolsv.exe

    Filesize

    135KB

    MD5

    1c7445cc24b1b377b4dda9eb3075fbbe

    SHA1

    62138655ef77917575a9706c40cf71c49377bfbd

    SHA256

    837dcb786358f3408afab30214640780026ee2cae614aa7a263ed565858b8417

    SHA512

    ef0e6663c2d6f296896d9b871105ece19b817b64febf30bf48b03d3719164ac9a5339af1b95479a0dbf578af7d7497fe2a5f38862aef8b7b8a4aad06e97a526d

  • C:\Windows\Resources\svchost.exe

    Filesize

    135KB

    MD5

    b667b428ca7f9b6946ecf5ac1d0163ba

    SHA1

    b43ee2f8cd349879fca953e20e68384f7f403e4a

    SHA256

    2d03c7b5db950292b96017e58278a04b0c323c5e36ecb3aa57e2c2843114b183

    SHA512

    7d1204b9e2a06df25c59631bc18e5f3ee0cb545cfbe05bc3447e57a294b693b995dbd413f50f6cbc90f240d5518a59970c0eea1cb4c3e690533bdbf5ce401e8d

  • memory/1396-90-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1772-55-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1772-0-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/1820-89-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2232-41-0x0000000000BE0000-0x0000000000C65000-memory.dmp

    Filesize

    532KB

  • memory/2232-8-0x0000000000BE0000-0x0000000000C65000-memory.dmp

    Filesize

    532KB

  • memory/2420-87-0x0000000000320000-0x0000000000329000-memory.dmp

    Filesize

    36KB

  • memory/2420-25-0x0000000000320000-0x0000000000329000-memory.dmp

    Filesize

    36KB

  • memory/2676-12-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2676-54-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/4268-53-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/4764-52-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB