Analysis

  • max time kernel
    148s
  • max time network
    157s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-06-2024 15:57

General

  • Target

    8f6ebc99b75a5fa569bfd49f51733e1be7f3e3c020c0b37303d08f3f122b8c89.exe

  • Size

    4.8MB

  • MD5

    dfbb43ca60d674f502c90d4f39aabed4

  • SHA1

    48e67ec0bc70902a1c7b735b052981f433ccb0ee

  • SHA256

    8f6ebc99b75a5fa569bfd49f51733e1be7f3e3c020c0b37303d08f3f122b8c89

  • SHA512

    54e703a1aa0bf612a161403ea84ad7e06a815b4203d437c57d5ecc5d5b5f2aa5c76e6ce6affe41e367c0e6b8606399754093922ccbc930612e7413b8a831003d

  • SSDEEP

    98304:mYFj+t4OBd/T6q+3kSVEtYOb8zQNqrV96dUEjreZ/9MG7egJh7j2M:ctBBlT6qM+th+LSd3rk9rCgHz

Malware Config

Extracted

Family

socks5systemz

C2

aqscplh.ru

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 3 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\8f6ebc99b75a5fa569bfd49f51733e1be7f3e3c020c0b37303d08f3f122b8c89.exe
    "C:\Users\Admin\AppData\Local\Temp\8f6ebc99b75a5fa569bfd49f51733e1be7f3e3c020c0b37303d08f3f122b8c89.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3396
    • C:\Users\Admin\AppData\Local\Temp\is-UM48M.tmp\8f6ebc99b75a5fa569bfd49f51733e1be7f3e3c020c0b37303d08f3f122b8c89.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-UM48M.tmp\8f6ebc99b75a5fa569bfd49f51733e1be7f3e3c020c0b37303d08f3f122b8c89.tmp" /SL5="$40212,4792619,54272,C:\Users\Admin\AppData\Local\Temp\8f6ebc99b75a5fa569bfd49f51733e1be7f3e3c020c0b37303d08f3f122b8c89.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4704
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4592
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2728

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-UM48M.tmp\8f6ebc99b75a5fa569bfd49f51733e1be7f3e3c020c0b37303d08f3f122b8c89.tmp

    Filesize

    680KB

    MD5

    f4de7fd9355f0ff0b76ceb518c1f65e9

    SHA1

    3d16d63a70693968a69e8c62729aa27084378e9c

    SHA256

    57512818b134f1535e4de667e56cd6089f492addc48e63765d066cfa1862e217

    SHA512

    23bf83930357f6904e773a98932bf21f06dd826391f3c3845aa2e82f2a7c1d464e932159ef9a25e5589e7f1624f4a592b39449b59fccbdc94d53640a6b2e1390

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

    Filesize

    2.8MB

    MD5

    c934a62b10b332230840c698dda71267

    SHA1

    3a7761f6a5a20eb617d1ff4b95b2ddc48df2106f

    SHA256

    e74f229bace9b9c059ef9cede2894e57a2bbfd0a6910ec27a9b21761d8844ad5

    SHA512

    07c0ff410dc32fa64cc8126d7fb77529533a9404b7f2d3c622d939ed754521ea8156ec115a19605746d9df1a51ae07116dd06f1006e045420048b5b73922bef4

  • memory/2728-91-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-96-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-117-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-114-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-111-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-67-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-108-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-105-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-69-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-102-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-99-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-72-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-76-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-75-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-79-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-82-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-85-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2728-88-0x0000000000A20000-0x0000000000AC2000-memory.dmp

    Filesize

    648KB

  • memory/3396-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3396-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3396-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/4592-63-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4592-60-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4592-65-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4592-59-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4704-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4704-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB