Analysis

  • max time kernel
    146s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/03/2024, 18:05

General

  • Target
    178bd65076e92da657f5b6ef202c8312cdfc827ae1c5d16668aa61c412d81a57.exe
  • Size 2.1MB
  • Sample240330-wplgraca35
  • SHA256 178bd65076e92da657f5b6ef202c8312cdfc827ae1c5d16668aa61c412d81a57
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • http://ebonsda.ua/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c644db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe19c2ed95983c

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\178bd65076e92da657f5b6ef202c8312cdfc827ae1c5d16668aa61c412d81a57.exe
    "C:\Users\Admin\AppData\Local\Temp\178bd65076e92da657f5b6ef202c8312cdfc827ae1c5d16668aa61c412d81a57.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4828
    • C:\Users\Admin\AppData\Local\Temp\is-T57LV.tmp\178bd65076e92da657f5b6ef202c8312cdfc827ae1c5d16668aa61c412d81a57.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-T57LV.tmp\178bd65076e92da657f5b6ef202c8312cdfc827ae1c5d16668aa61c412d81a57.tmp" /SL5="$401CC,1803558,54272,C:\Users\Admin\AppData\Local\Temp\178bd65076e92da657f5b6ef202c8312cdfc827ae1c5d16668aa61c412d81a57.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3252
      • C:\Users\Admin\AppData\Local\Audio Converter Lib\audioconverterlib.exe
        "C:\Users\Admin\AppData\Local\Audio Converter Lib\audioconverterlib.exe" -i
        3⤵
        • Executes dropped EXE
        PID:4160
      • C:\Users\Admin\AppData\Local\Audio Converter Lib\audioconverterlib.exe
        "C:\Users\Admin\AppData\Local\Audio Converter Lib\audioconverterlib.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1836
  • 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=1408 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2940

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          audioconverterlib.exe

          • Path C:\Users\Admin\AppData\Local\Audio Converter Lib\audioconverterlib.exe
          • Size 2.0MB
          • SHA256 1802ce5bbb941b88fe34bbf8c2af4964ff86c3300cdecf55814b6d0cc60eb248
          • MD5 SHA1 SHA512 SSDEEP

          _iscrypt.dll

          • Path C:\Users\Admin\AppData\Local\Temp\is-1S67D.tmp\_isetup\_iscrypt.dll
          • Size 2KB
          • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
          • MD5 SHA1 SHA512

          178bd65076e92da657f5b6ef202c8312cdfc827ae1c5d16668aa61c412d81a57.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-T57LV.tmp\178bd65076e92da657f5b6ef202c8312cdfc827ae1c5d16668aa61c412d81a57.tmp
          • Size 677KB
          • SHA256 503695b2e2f1f4872ac77b4e4cb6827d00ee48c5253710bbd078180693d6bc06
          • MD5 SHA1 SHA512 SSDEEP

          memory/1836-46-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-78-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-91-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-87-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-85-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-82-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-44-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-68-0x0000000000760000-0x0000000000802000-memory.dmp

          memory/1836-79-0x0000000000760000-0x0000000000802000-memory.dmp

          memory/1836-95-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-49-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-74-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-54-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-55-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-58-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-61-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-64-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-66-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/1836-69-0x0000000000760000-0x0000000000802000-memory.dmp

          memory/3252-51-0x00000000007A0000-0x00000000007A1000-memory.dmp

          memory/3252-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          memory/3252-6-0x00000000007A0000-0x00000000007A1000-memory.dmp

          memory/4160-42-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/4160-39-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/4160-38-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/4160-37-0x0000000000400000-0x0000000000606000-memory.dmp

          memory/4828-0-0x0000000000400000-0x0000000000414000-memory.dmp

          memory/4828-47-0x0000000000400000-0x0000000000414000-memory.dmp