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 16:02

General

  • Target

    75919255e32f56f3c64705f9323ad0a30b214781001a68e25a40917f5e65b860.exe

  • Size

    4.9MB

  • MD5

    9ca3970fe5f93d9424c03fa47ecd4285

  • SHA1

    f46532ed70ef33837a56ed8e54c1583ba05200c6

  • SHA256

    75919255e32f56f3c64705f9323ad0a30b214781001a68e25a40917f5e65b860

  • SHA512

    995e35d41276d8002d926427f0f4d00db2066c715b0129ca3ac0f5b2bea7ec9b73b9081cc3534a2154db27dc7048d78ed0f3d4917d82938acc2a622aa36f62e1

  • SSDEEP

    98304:mfH8K6Wpu8X7BTR9Z2wZrWoIcbbZwHTV26uqGDjXvKU6nz+duPQ2RPfk:aH8Kbpu8LBTXZ2wlWoIcbVwz45jXvNBX

Malware Config

Extracted

Family

socks5systemz

C2

dijhwxu.info

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\75919255e32f56f3c64705f9323ad0a30b214781001a68e25a40917f5e65b860.exe
    "C:\Users\Admin\AppData\Local\Temp\75919255e32f56f3c64705f9323ad0a30b214781001a68e25a40917f5e65b860.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3324
    • C:\Users\Admin\AppData\Local\Temp\is-ADSVJ.tmp\75919255e32f56f3c64705f9323ad0a30b214781001a68e25a40917f5e65b860.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ADSVJ.tmp\75919255e32f56f3c64705f9323ad0a30b214781001a68e25a40917f5e65b860.tmp" /SL5="$700D8,4907698,54272,C:\Users\Admin\AppData\Local\Temp\75919255e32f56f3c64705f9323ad0a30b214781001a68e25a40917f5e65b860.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1768
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2860
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1764

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-ADSVJ.tmp\75919255e32f56f3c64705f9323ad0a30b214781001a68e25a40917f5e65b860.tmp

    Filesize

    680KB

    MD5

    1ba800b04f640841e63e4852f38023bd

    SHA1

    908eaed8abe8ae2ae9b6bc5f424c80d9c4f07ade

    SHA256

    314abc3aae737dcb97089ee410fe3fa7a047840b9906de8d81ec597bd783bb9c

    SHA512

    f8bf9180b273f355ca202579a4ef0cdf7cd84011d54bda88d825389c00a031f67d6bfe6692911b9c1998404c8f069c391fd2a245970f18e93afc7bb692c14dd7

  • C:\Users\Admin\AppData\Local\Temp\is-N0H2P.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

    Filesize

    2.9MB

    MD5

    b1c5d7ef1d81920ae51fde871886bfe4

    SHA1

    448bd294c8873f91dca5ff292c2f79ce6c8e159c

    SHA256

    a2c5948c3e9bfe84a56054d839b68b3d081c5df5cdadd1e480613bc5968f27b4

    SHA512

    0cfda10f590291192750d2996fabf68132f5184a6527d8d027cb8d75c24db089c9b03c54033539cfa4c4c9c8387d6f1c1ab7154258ed7e0e27c309163ff9120b

  • memory/1764-91-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-76-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-117-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-114-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-111-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-108-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-105-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-67-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-69-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-102-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-99-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-72-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-75-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-96-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-79-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-82-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-85-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/1764-88-0x0000000000A60000-0x0000000000B02000-memory.dmp

    Filesize

    648KB

  • memory/1768-12-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1768-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2860-65-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/2860-63-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/2860-60-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/2860-59-0x0000000000400000-0x00000000006F1000-memory.dmp

    Filesize

    2.9MB

  • memory/3324-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3324-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3324-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB