Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    14-06-2024 23:17

General

  • Target

    e5e154f566cb78bae624e3c6369ad5b335d9de18567883537025f8b303b8881c.exe

  • Size

    4.8MB

  • MD5

    ac3e55b3a41d0f2e53fdec36e123dcfe

  • SHA1

    54f6ef80fde0d9d642b445cd318e727e954e30f4

  • SHA256

    e5e154f566cb78bae624e3c6369ad5b335d9de18567883537025f8b303b8881c

  • SHA512

    8ae4886bd8cc76da471332b3486da16e34389bda1caac2f6f2ae841a0cf097199382377925a7b75dc2660bc547b53a834285a5878c3e93f44962a056a434f778

  • SSDEEP

    98304:m8x0sY+TtdJPOgwqHsBPg2sOmG5uQRzl1d7lSwpp/C:35BOOsXsOmG5JvzSwpp/C

Malware Config

Extracted

Family

socks5systemz

C2

bxwkafl.com

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\e5e154f566cb78bae624e3c6369ad5b335d9de18567883537025f8b303b8881c.exe
    "C:\Users\Admin\AppData\Local\Temp\e5e154f566cb78bae624e3c6369ad5b335d9de18567883537025f8b303b8881c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5052
    • C:\Users\Admin\AppData\Local\Temp\is-EC3IA.tmp\e5e154f566cb78bae624e3c6369ad5b335d9de18567883537025f8b303b8881c.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-EC3IA.tmp\e5e154f566cb78bae624e3c6369ad5b335d9de18567883537025f8b303b8881c.tmp" /SL5="$70070,4788238,54272,C:\Users\Admin\AppData\Local\Temp\e5e154f566cb78bae624e3c6369ad5b335d9de18567883537025f8b303b8881c.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2308
      • C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
        "C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2992
      • C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
        "C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2348

Network

MITRE ATT&CK Matrix ATT&CK v13

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
    Filesize

    2.9MB

    MD5

    e21e605145ae460d3a8780c8c2de9a92

    SHA1

    567151f5f50057b2198ad583a883d75232b16ef3

    SHA256

    7d0b328ad49e9469c7293cf35e2f1a66401587bf6b43d49be2943cb5dd56ada1

    SHA512

    699045c9aeab98486ee4577bdd6fadb986a6b71c20f3b9fa35fb7f2df24f1e62f08ed806c01d5e4b08f991e96b5eb9738f24e400c92deed75ee88a66077b763f

  • C:\Users\Admin\AppData\Local\Temp\is-B0RPG.tmp\_isetup\_iscrypt.dll
    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-EC3IA.tmp\e5e154f566cb78bae624e3c6369ad5b335d9de18567883537025f8b303b8881c.tmp
    Filesize

    680KB

    MD5

    984e6b8a7e6fa5cbf5a45904b1defc00

    SHA1

    37ce92d6cf1a117a191d14cc7fa1a6a97c05c967

    SHA256

    3313fd9ad369bdee368d356036858a7fcc6182175a30a92a6b73e41e1b2a5eb7

    SHA512

    55af997bfcc532ff01e593471197555432481587c263eb3777e511c656e030edd6c34edce0778b07e117dae4b9ed18976d2ec5c2fe127511a5f29928223ab7c8

  • memory/2308-70-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2308-16-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2348-95-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-113-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-107-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-104-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-101-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-68-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-98-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-116-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-71-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-74-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-75-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-78-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-81-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-84-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-87-0x00000000009E0000-0x0000000000A82000-memory.dmp
    Filesize

    648KB

  • memory/2348-90-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2348-110-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2992-59-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2992-60-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2992-65-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2992-63-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/5052-69-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/5052-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/5052-2-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB