Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    09-06-2024 05:33

General

  • Target

    a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe

  • Size

    4.6MB

  • MD5

    4173debbc3d407dca3905c212ab537f2

  • SHA1

    807cd0f7e7337545ecde2a1dec4fd9ad6b31ad7a

  • SHA256

    a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693

  • SHA512

    884581348592d891c95e916481d5e2b2fe1aeef7fd55b25acf2010bf542c7f3e6f15e7be6ec1f2813e9a4dc0cbc853c9c0beca2c13b0d6bc5d1e8a2a6827d57d

  • SSDEEP

    98304:mTMDgLaCF/V6GoPhbZQ0sdYJi4LXyrk/BAqZ0pyrXFtbrKeDYSLdCu9zlp:kMDEaG/V6PPhb5sGJDLCrkCXSFlrKUYy

Malware Config

Extracted

Family

socks5systemz

C2

ainobxb.ru

http://ainobxb.ru/search/?q=67e28dd83e55f3201607a91c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa48e8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff818c1ee979232

http://ainobxb.ru/search/?q=67e28dd83e55f3201607a91c7c27d78406abdd88be4b12eab517aa5c96bd86ec9c814b885a8bbc896c58e713bc90c91d36b5281fc235a925ed3e5cd6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee92933acc6d9e1f

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\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe
    "C:\Users\Admin\AppData\Local\Temp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3348
    • C:\Users\Admin\AppData\Local\Temp\is-2S1LF.tmp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-2S1LF.tmp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp" /SL5="$70054,4585671,54272,C:\Users\Admin\AppData\Local\Temp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2176
      • C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
        "C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1808
      • C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
        "C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2140

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-2S1LF.tmp\a408e2bfa6521362525065c4170d314d83ffddc4ed68514ac01999e61a1dd693.tmp
    Filesize

    680KB

    MD5

    53a94211658a6bbf3d3a695470f940a6

    SHA1

    a9909ddfc97dee691e9d60b1257d61a3c1ef4e07

    SHA256

    d4928c3cacf826943bb44385aac5fb52e6ac69054f31a463df266baf9aa26d01

    SHA512

    d9c916961abcce8f05089df9cb6310c930aaa29266bfaf378a4dd0c9180ba9186a81393c662ba2a3b1a4da587379d68d532250c1a8d216d44dd532aaf178b402

  • C:\Users\Admin\AppData\Local\Temp\is-FIU0M.tmp\_isetup\_iscrypt.dll
    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe
    Filesize

    2.6MB

    MD5

    a0ac562bedc60906db18a7457c4a3e33

    SHA1

    f9e83a91e0c8609a355bafa25c88a0ae30107fed

    SHA256

    728d3595972daf3b92bd052193a13a079d0862604c6a88fb3acd739cf08ec38a

    SHA512

    ccaa43278a250cc6ce03d04344ebd57e928d99e93b83a938eeba65c25a7255de5cadd51bc4d593214a2232c214a47a7c1a0e0ca56cb398e0d74c886470650414

  • memory/1808-63-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/1808-60-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/1808-65-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/1808-59-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-74-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-86-0x00000000027E0000-0x0000000002882000-memory.dmp
    Filesize

    648KB

  • memory/2140-68-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-118-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-115-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-111-0x00000000027E0000-0x0000000002882000-memory.dmp
    Filesize

    648KB

  • memory/2140-71-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-110-0x00000000027E0000-0x0000000002882000-memory.dmp
    Filesize

    648KB

  • memory/2140-77-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-80-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-83-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-109-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-89-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-94-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-97-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-100-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-103-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2140-106-0x0000000000400000-0x00000000006A4000-memory.dmp
    Filesize

    2.6MB

  • memory/2176-13-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2176-70-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/3348-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3348-69-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3348-3-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB