Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240319-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/03/2024, 04:36

General

  • Target
    d53e734f9a4bad2b0d36b7484cb445bd377192a77ddb0d753d5aa1d14e9db078.exe
  • Size 2.0MB
  • Sample240325-e8hfrsba71
  • SHA256 d53e734f9a4bad2b0d36b7484cb445bd377192a77ddb0d753d5aa1d14e9db078
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • http://eroloke.ua/search/?q=67e28dd86a08a32d155da44d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978f471ea771795af8e05c64bdb22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe12c4ee919c38

  • http://eroloke.ua/search/?q=67e28dd86a08a32d155da44d7c27d78406abdd88be4b12eab517aa5c96bd86e8968645835a8bbc896c58e713bc90c91c36b5281fc235a925ed3e57d6bd974a95129070b618e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee94993fcc6b9015

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\d53e734f9a4bad2b0d36b7484cb445bd377192a77ddb0d753d5aa1d14e9db078.exe
    "C:\Users\Admin\AppData\Local\Temp\d53e734f9a4bad2b0d36b7484cb445bd377192a77ddb0d753d5aa1d14e9db078.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3972
    • C:\Users\Admin\AppData\Local\Temp\is-2HQOE.tmp\d53e734f9a4bad2b0d36b7484cb445bd377192a77ddb0d753d5aa1d14e9db078.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-2HQOE.tmp\d53e734f9a4bad2b0d36b7484cb445bd377192a77ddb0d753d5aa1d14e9db078.tmp" /SL5="$E01C8,1779906,54272,C:\Users\Admin\AppData\Local\Temp\d53e734f9a4bad2b0d36b7484cb445bd377192a77ddb0d753d5aa1d14e9db078.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1292
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1912
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3696
  • 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=4140 --field-trial-handle=2320,i,3025503729105798828,9325691672526736153,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4900

    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 d1c4a6fdab2ee9d3e29cff002c76f83ece20f08806a11d44432313ae43d061f0
          • MD5 SHA1 SHA512 SSDEEP

          d53e734f9a4bad2b0d36b7484cb445bd377192a77ddb0d753d5aa1d14e9db078.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-2HQOE.tmp\d53e734f9a4bad2b0d36b7484cb445bd377192a77ddb0d753d5aa1d14e9db078.tmp
          • Size 677KB
          • SHA256 a43c4e3916a92d299c22e2010383b2a8f85e14882a610de57bb2fef91f7984ed
          • MD5 SHA1 SHA512 SSDEEP

          _iscrypt.dll

          • Path C:\Users\Admin\AppData\Local\Temp\is-SRFF2.tmp\_isetup\_iscrypt.dll
          • Size 2KB
          • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
          • MD5 SHA1 SHA512

          memory/1292-49-0x0000000000400000-0x00000000004B8000-memory.dmp

          memory/1292-51-0x0000000002240000-0x0000000002241000-memory.dmp

          memory/1292-7-0x0000000002240000-0x0000000002241000-memory.dmp

          memory/1912-38-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/1912-39-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/1912-42-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/1912-43-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-54-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-82-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-100-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-46-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-50-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-97-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-93-0x0000000000910000-0x00000000009B2000-memory.dmp

          memory/3696-55-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-58-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-61-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-64-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-67-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-69-0x0000000000910000-0x00000000009B2000-memory.dmp

          memory/3696-75-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-78-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-79-0x0000000000910000-0x00000000009B2000-memory.dmp

          memory/3696-47-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-85-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-88-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-91-0x0000000000400000-0x0000000000619000-memory.dmp

          memory/3696-92-0x0000000000910000-0x00000000009B2000-memory.dmp

          memory/3972-0-0x0000000000400000-0x0000000000414000-memory.dmp

          memory/3972-2-0x0000000000400000-0x0000000000414000-memory.dmp

          memory/3972-48-0x0000000000400000-0x0000000000414000-memory.dmp