Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/03/2024, 17:16

General

  • Target
    2f2b5ff3c33c62109f96e65c1d7601b0.exe
  • Size 2.0MB
  • Sample240323-vs48lacd3v
  • SHA256 37e9181fda347881a9648496c62b1a970ce2055245db4d936cc8ddf1a20eef81
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • http://dixabom.info/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c1eb979f39

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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2f2b5ff3c33c62109f96e65c1d7601b0.exe
    "C:\Users\Admin\AppData\Local\Temp\2f2b5ff3c33c62109f96e65c1d7601b0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:408
    • C:\Users\Admin\AppData\Local\Temp\is-EMEM3.tmp\2f2b5ff3c33c62109f96e65c1d7601b0.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-EMEM3.tmp\2f2b5ff3c33c62109f96e65c1d7601b0.tmp" /SL5="$60222,1752368,54272,C:\Users\Admin\AppData\Local\Temp\2f2b5ff3c33c62109f96e65c1d7601b0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2788
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4508
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:5004
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4092 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1224

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          colorpicker.exe

          • Path C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
          • Size 2.1MB
          • SHA256 9cc03473e79df79135bfad64f51cc2ab03eeba069494045a91ddf0d2745345f6
          • MD5 SHA1 SHA512 SSDEEP

          2f2b5ff3c33c62109f96e65c1d7601b0.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-EMEM3.tmp\2f2b5ff3c33c62109f96e65c1d7601b0.tmp
          • Size 384KB
          • SHA256 40712b93522563c3c0db91b9d4fc1366588f298e6f64b1e2050ae568f54e1e1c
          • MD5 SHA1 SHA512 SSDEEP

          2f2b5ff3c33c62109f96e65c1d7601b0.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-EMEM3.tmp\2f2b5ff3c33c62109f96e65c1d7601b0.tmp
          • Size 192KB
          • SHA256 744418eaaf23c708479a42a57e1c17d792dd6714b4478d8e856f07b65b8dacf9
          • MD5 SHA1 SHA512 SSDEEP

          _iscrypt.dll

          • Path C:\Users\Admin\AppData\Local\Temp\is-FIJF5.tmp\_isetup\_iscrypt.dll
          • Size 2KB
          • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
          • MD5 SHA1 SHA512

          memory/408-6-0x0000000000400000-0x0000000000414000-memory.dmp

          memory/408-0-0x0000000000400000-0x0000000000414000-memory.dmp

          memory/408-47-0x0000000000400000-0x0000000000414000-memory.dmp

          memory/2788-7-0x0000000002340000-0x0000000002341000-memory.dmp

          memory/2788-52-0x0000000002340000-0x0000000002341000-memory.dmp

          memory/2788-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          memory/4508-38-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/4508-39-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/4508-40-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/4508-43-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-51-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-69-0x0000000000940000-0x00000000009E2000-memory.dmp

          memory/5004-55-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-56-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-58-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-61-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-63-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-67-0x0000000000940000-0x00000000009E2000-memory.dmp

          memory/5004-68-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-46-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-75-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-79-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-80-0x0000000000940000-0x00000000009E2000-memory.dmp

          memory/5004-83-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-85-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-88-0x0000000000400000-0x0000000000611000-memory.dmp

          memory/5004-90-0x0000000000400000-0x0000000000611000-memory.dmp