Analysis

  • max time kernel
    144s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/03/2024, 02:58

General

  • Target
    7f9ca27e76d60ddb6e159becb582b1fe2f449a6b55293d95321bf42766a2783c.exe
  • Size 2.0MB
  • Sample240325-df95msec93
  • SHA256 7f9ca27e76d60ddb6e159becb582b1fe2f449a6b55293d95321bf42766a2783c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • http://cecdofz.net/search/?q=67e28dd8655aa729110daa1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe12c3ea909c3d

  • http://cecdofz.net/search/?q=67e28dd8655aa729110daa1b7c27d78406abdd88be4b12eab517aa5c96bd86ee95854c825a8bbc896c58e713bc90c91936b5281fc235a925ed3e04d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee949938c86a9010

Signatures

  • Detect Socks5Systemz Payload 4 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\7f9ca27e76d60ddb6e159becb582b1fe2f449a6b55293d95321bf42766a2783c.exe
    "C:\Users\Admin\AppData\Local\Temp\7f9ca27e76d60ddb6e159becb582b1fe2f449a6b55293d95321bf42766a2783c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2444
    • C:\Users\Admin\AppData\Local\Temp\is-HQG7O.tmp\7f9ca27e76d60ddb6e159becb582b1fe2f449a6b55293d95321bf42766a2783c.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-HQG7O.tmp\7f9ca27e76d60ddb6e159becb582b1fe2f449a6b55293d95321bf42766a2783c.tmp" /SL5="$601CC,1758430,54272,C:\Users\Admin\AppData\Local\Temp\7f9ca27e76d60ddb6e159becb582b1fe2f449a6b55293d95321bf42766a2783c.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2068
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3228
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2784
  • 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=1332 --field-trial-handle=2268,i,8796662530135712346,11409037572378858775,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3784

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          colorpicker32.exe

          • Path C:\Users\Admin\AppData\Local\Color Picker\colorpicker32.exe
          • Size 2.0MB
          • SHA256 1c37de037de584cfee16b5425ff483903cf0ba0aab42629ecb48bb5c7697d7b2
          • MD5 SHA1 SHA512 SSDEEP

          _iscrypt.dll

          • Path C:\Users\Admin\AppData\Local\Temp\is-9KP5P.tmp\_isetup\_iscrypt.dll
          • Size 2KB
          • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
          • MD5 SHA1 SHA512

          7f9ca27e76d60ddb6e159becb582b1fe2f449a6b55293d95321bf42766a2783c.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-HQG7O.tmp\7f9ca27e76d60ddb6e159becb582b1fe2f449a6b55293d95321bf42766a2783c.tmp
          • Size 677KB
          • SHA256 2fbf5d1a94ff7aa773d0abe9e2216f0347f47083bf66632e516b9e59ede819df
          • MD5 SHA1 SHA512 SSDEEP

          memory/2068-6-0x0000000002240000-0x0000000002241000-memory.dmp

          memory/2068-49-0x0000000002240000-0x0000000002241000-memory.dmp

          memory/2068-47-0x0000000000400000-0x00000000004B8000-memory.dmp

          memory/2444-46-0x0000000000400000-0x0000000000414000-memory.dmp

          memory/2444-0-0x0000000000400000-0x0000000000414000-memory.dmp

          memory/2784-80-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-65-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-98-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-95-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-48-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-91-0x0000000000810000-0x00000000008B2000-memory.dmp

          memory/2784-52-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-53-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-56-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-59-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-62-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-45-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-67-0x0000000000810000-0x00000000008B2000-memory.dmp

          memory/2784-73-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-76-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-77-0x0000000000810000-0x00000000008B2000-memory.dmp

          memory/2784-90-0x0000000000810000-0x00000000008B2000-memory.dmp

          memory/2784-83-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-86-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/2784-89-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/3228-37-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/3228-38-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/3228-39-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/3228-42-0x0000000000400000-0x0000000000606000-memory.dmp