Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-06-2024 19:59

General

  • Target

    d4f2f9fe075c311ef5099232f47eb663de57d55725d22a3c4349d64855befc15.exe

  • Size

    4.8MB

  • MD5

    a6ba67ff6e634d920d00ef7a00d5c656

  • SHA1

    8458e8b74fadf0147e35b3f61a74579a739f0c01

  • SHA256

    d4f2f9fe075c311ef5099232f47eb663de57d55725d22a3c4349d64855befc15

  • SHA512

    a04bdf774649ad1e3aee51eb5fd5185fc34d443940dcd66f4e287b19f61e1257aebf4d94c35cbda7de0184222ea994f2b130f90565907c11b0876da77f641cbf

  • SSDEEP

    98304:mNpMY3iIGtnQOSVU+grdHriK0NXR6R9Waqtt8BDEZe4Y1ZWXe25H4x/B:0+gFaNSVUThriKvnWaqtLZtnXr5H4dB

Malware Config

Extracted

Family

socks5systemz

C2

ejiwibh.ua

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\d4f2f9fe075c311ef5099232f47eb663de57d55725d22a3c4349d64855befc15.exe
    "C:\Users\Admin\AppData\Local\Temp\d4f2f9fe075c311ef5099232f47eb663de57d55725d22a3c4349d64855befc15.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3920
    • C:\Users\Admin\AppData\Local\Temp\is-ONT3A.tmp\d4f2f9fe075c311ef5099232f47eb663de57d55725d22a3c4349d64855befc15.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ONT3A.tmp\d4f2f9fe075c311ef5099232f47eb663de57d55725d22a3c4349d64855befc15.tmp" /SL5="$40234,4807771,54272,C:\Users\Admin\AppData\Local\Temp\d4f2f9fe075c311ef5099232f47eb663de57d55725d22a3c4349d64855befc15.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2920
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2228
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4376

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-7296T.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-ONT3A.tmp\d4f2f9fe075c311ef5099232f47eb663de57d55725d22a3c4349d64855befc15.tmp

    Filesize

    680KB

    MD5

    b9936ad678f4594b574641d0dca651b0

    SHA1

    be5a1cb9c1263eba95da8d68ccc8f3e060447622

    SHA256

    94f2edfd8217a17a10957ecb6b31195b00f1e426b09463505060cb655ee00f39

    SHA512

    c3e851c021c8c9ab1ff86dba6749a42a823a3ceaf5b18461ffe20a372fd3ea81a76f460cac4e6b803c0e17005ccbdd82c34cd96c5be3dd0aa996d00280f51ee7

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

    Filesize

    2.8MB

    MD5

    c9abc74836003c1758dbbabc05384ff3

    SHA1

    75a97608e3d06cf3036dba06205dde6660149e5b

    SHA256

    b8630de3bb58c588abe12c24b8612180a29112439539d5b38d6115f561098d60

    SHA512

    5bd4e07a668db623441e83cd5589613aa6cc4ad107ed0b4524f95b9ac63269d20558a0a1cb27f00b070d41edb19822910dc36499d6626af8d237c51695532348

  • memory/2228-59-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2228-60-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2228-65-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2228-64-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/2920-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2920-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3920-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/3920-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3920-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4376-74-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-89-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-68-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-77-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-80-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-83-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-84-0x0000000000910000-0x00000000009B2000-memory.dmp

    Filesize

    648KB

  • memory/4376-71-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-94-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-97-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-100-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-103-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-106-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-109-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-112-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4376-115-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB