Analysis

  • max time kernel
    141s
  • max time network
    127s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-06-2024 15:00

General

  • Target

    a6d6f72574a70adeef600b054f66e0d7cb1a6a7ecc66e89d96f4e870680cbf1c.exe

  • Size

    4.8MB

  • MD5

    95c08ddd14568a1428058c34fc6c4fa2

  • SHA1

    65dc9dcc3fa519f3a9b768ebcb64e774b5cc18d7

  • SHA256

    a6d6f72574a70adeef600b054f66e0d7cb1a6a7ecc66e89d96f4e870680cbf1c

  • SHA512

    7f8d9e33861992dd43edb61af2a70fbc553ada9d095110149e1f3038cdc428ca335921bc143814a17ccd5187c9f6ee60dac4410eda0e18c585a4ab85f5cc0352

  • SSDEEP

    98304:mEkcBeivuOgzBGTq7j1LmTJA96JkoMS7G68//Iz2D7rKG2/mQkK:zkc7oB7E4+UHc2D7W3/mQZ

Malware Config

Extracted

Family

socks5systemz

C2

ayuavzb.ru

http://ayuavzb.ru/search/?q=67e28dd83f5ff27c445aaa4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978f171ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c4ee969a3d

http://ayuavzb.ru/search/?q=67e28dd83f5ff27c445aaa4e7c27d78406abdd88be4b12eab517aa5c96bd86eb968e4c865a8bbc896c58e713bc90c91b36b5281fc235a925ed3e52d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c983fcc6c9610

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a6d6f72574a70adeef600b054f66e0d7cb1a6a7ecc66e89d96f4e870680cbf1c.exe
    "C:\Users\Admin\AppData\Local\Temp\a6d6f72574a70adeef600b054f66e0d7cb1a6a7ecc66e89d96f4e870680cbf1c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2060
    • C:\Users\Admin\AppData\Local\Temp\is-U9QFQ.tmp\a6d6f72574a70adeef600b054f66e0d7cb1a6a7ecc66e89d96f4e870680cbf1c.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-U9QFQ.tmp\a6d6f72574a70adeef600b054f66e0d7cb1a6a7ecc66e89d96f4e870680cbf1c.tmp" /SL5="$40220,4739232,54272,C:\Users\Admin\AppData\Local\Temp\a6d6f72574a70adeef600b054f66e0d7cb1a6a7ecc66e89d96f4e870680cbf1c.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3028
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2556
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:808

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-RQEN7.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-U9QFQ.tmp\a6d6f72574a70adeef600b054f66e0d7cb1a6a7ecc66e89d96f4e870680cbf1c.tmp

    Filesize

    680KB

    MD5

    499a06921c1db50fe13b1dbde7c00355

    SHA1

    cf067418e38372f0fb5ed4da8e47f24c431b02ab

    SHA256

    7550154f594aa12076637c99b34fde395e2f7d73095df506dc7c07e4d702ed39

    SHA512

    541bd2e672d1f7d3e07c9a9c0abc58dd10f0e6b6d610373e7f1eb5befe392de8b30e1557c6d8712826fece4e58820c4887c088965815c2b82edb33eafb841a7e

  • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

    Filesize

    2.8MB

    MD5

    42c86d89b43a0faa7df281a7fe681c8e

    SHA1

    c362f557a653cdaee78428110f64bdec50e1dd39

    SHA256

    8a5f3d60b0918ee96011451c717b6c39afaa60ce7ad030ef84d02bf6978df587

    SHA512

    86fbbd448aacdddecda3f098307b3127f4fc606eb17b6c294555ec6e2f6f90af17be18a4190fbff0cb38e9cedbdb54d1a1346f1e36837c8bc0e7fd9d9213c981

  • memory/808-94-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-77-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-118-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-115-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-110-0x0000000000A30000-0x0000000000AD2000-memory.dmp

    Filesize

    648KB

  • memory/808-111-0x0000000000A30000-0x0000000000AD2000-memory.dmp

    Filesize

    648KB

  • memory/808-109-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-67-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-106-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-103-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-70-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-74-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-73-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-100-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-80-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-83-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-86-0x0000000000A30000-0x0000000000AD2000-memory.dmp

    Filesize

    648KB

  • memory/808-89-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/808-97-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2060-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2060-68-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2060-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2556-61-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2556-63-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2556-64-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2556-59-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3028-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3028-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB