Analysis

  • max time kernel
    126s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    04/07/2024, 03:45

General

  • Target

    398ed99ddde8c997242cc01c0ce7baddc778a7fc85c2df2d61d8a8a707d4b0f4.exe

  • Size

    49KB

  • MD5

    a7df8de84749948ffd321bd4267946b0

  • SHA1

    db46f1b7946cde713db20d95b4113089423f54cb

  • SHA256

    398ed99ddde8c997242cc01c0ce7baddc778a7fc85c2df2d61d8a8a707d4b0f4

  • SHA512

    30d80ef511f67c5831d050c29419d9cce8e45c0fc855a2cf445738ba0a3dccf50a747e9a51527a56de641d901f404628796dac17cc8537ad4af34b1aa5807fd4

  • SSDEEP

    768:r8eRH+MlFh0pXrL4i6sh7iQroCHmmbk2iXJ:r9l+Gi6sh7iQroCLKJ

Score
7/10
upx

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\398ed99ddde8c997242cc01c0ce7baddc778a7fc85c2df2d61d8a8a707d4b0f4.exe
    "C:\Users\Admin\AppData\Local\Temp\398ed99ddde8c997242cc01c0ce7baddc778a7fc85c2df2d61d8a8a707d4b0f4.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1764
    • C:\Users\Admin\AppData\Local\Temp\bkgrnd.exe
      "C:\Users\Admin\AppData\Local\Temp\bkgrnd.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2360

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    d8452b952fbab6620f67176831ca3c7f

    SHA1

    c485949aefd410aade5a627be0644c9fa78ffc9e

    SHA256

    0d728e2483b7d9eb60c44098a30a3b05baa40db5995393e92d176278583bae9c

    SHA512

    62a751c8d96eefa5d5c93ad10300186f4662bc55c0404f1b0e4498759277c2ba95b0c86208d16464b7cc0f9ed31d439a9bd32ef8ae3fdaf86135f3e59ca314ae

  • C:\Users\Admin\AppData\Local\Temp\Cab147C.tmp

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\Tar151F.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \Users\Admin\AppData\Local\Temp\bkgrnd.exe

    Filesize

    49KB

    MD5

    bb2a54a7be558802ac0a9b69f53fdf19

    SHA1

    babed1887c6c0b92e32954d577703a05f0ba0e7c

    SHA256

    9eabcaa4e1fa64cfae202089b90b36ff9e17a48e8624a01db53880cb6fdffc09

    SHA512

    1f33be72f4a1338a5b556b4b66b6e942cf5f0b8173a59c789d8f669bbb3315e98d464743d8b67671976ae05575c117b8e2298578992f864f4764d12c4aa5642f

  • memory/1764-0-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/1764-1-0x0000000004000000-0x0000000004006000-memory.dmp

    Filesize

    24KB

  • memory/1764-2-0x0000000004000000-0x0000000004006000-memory.dmp

    Filesize

    24KB

  • memory/1764-9-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/2360-189-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB