Analysis

  • max time kernel
    293s
  • max time network
    262s
  • platform
    windows10-1703_x64
  • resource
    win10-20240611-en
  • resource tags

    arch:x64arch:x86image:win10-20240611-enlocale:en-usos:windows10-1703-x64system
  • submitted
    27/06/2024, 22:31

General

  • Target
    058f878aeb44622da5120abe47ef4657e21fb8728194bfda51f88e2f460b4669.exe
  • Size 4.7MB
  • Sample240627-2fhbmaxdkr
  • SHA256 058f878aeb44622da5120abe47ef4657e21fb8728194bfda51f88e2f460b4669
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • aigahwe.ru

  • http://aigahwe.ru/search/?q=67e28dd8690ba728400aae4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff614c2e8909f32

  • http://aigahwe.ru/search/?q=67e28dd8690ba728400aae4c7c27d78406abdd88be4b12eab517aa5c96bd86ef938f4c845a8bbc896c58e713bc90c91936b5281fc235a925ed3e51d6bd974a95129070b616e96cc92be510b866db52bee348ee4c2b14a82966836f23d7f210c7ee9c9f39ca6a931f

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 FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\058f878aeb44622da5120abe47ef4657e21fb8728194bfda51f88e2f460b4669.exe
    "C:\Users\Admin\AppData\Local\Temp\058f878aeb44622da5120abe47ef4657e21fb8728194bfda51f88e2f460b4669.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4156
    • C:\Users\Admin\AppData\Local\Temp\is-VTPDO.tmp\058f878aeb44622da5120abe47ef4657e21fb8728194bfda51f88e2f460b4669.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-VTPDO.tmp\058f878aeb44622da5120abe47ef4657e21fb8728194bfda51f88e2f460b4669.tmp" /SL5="$801AA,4658579,54272,C:\Users\Admin\AppData\Local\Temp\058f878aeb44622da5120abe47ef4657e21fb8728194bfda51f88e2f460b4669.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2316
      • C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe
        "C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe" -i
        3⤵
        • Executes dropped EXE
        PID:220
      • C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe
        "C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe" -s
        3⤵
        • Executes dropped EXE
        PID:260

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        freesoundrecorder.exe

        • Path C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe
        • Size 2.9MB
        • SHA256 51d70b7416362374fa800c467d912f1cf6fedcff6b96dda26757195089d09771
        • MD5 SHA1 SHA512 SSDEEP

        058f878aeb44622da5120abe47ef4657e21fb8728194bfda51f88e2f460b4669.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-VTPDO.tmp\058f878aeb44622da5120abe47ef4657e21fb8728194bfda51f88e2f460b4669.tmp
        • Size 680KB
        • SHA256 98cea98da1f83a6f31a405084b3c9195c20f05386519850015e9f07caeb93643
        • MD5 SHA1 SHA512 SSDEEP

        _iscrypt.dll

        • Path \Users\Admin\AppData\Local\Temp\is-Q7E4C.tmp\_isetup\_iscrypt.dll
        • Size 2KB
        • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
        • MD5 SHA1 SHA512

        memory/220-59-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/220-63-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/220-60-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-81-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-91-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-127-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-65-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-124-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-121-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-69-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-72-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-75-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-78-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-118-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-84-0x0000000000900000-0x00000000009A2000-memory.dmp

        memory/260-88-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-115-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-94-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-97-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-100-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-103-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-106-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/260-107-0x0000000000900000-0x00000000009A2000-memory.dmp

        memory/260-108-0x0000000000900000-0x00000000009A2000-memory.dmp

        memory/260-112-0x0000000000400000-0x00000000006E7000-memory.dmp

        memory/2316-13-0x0000000000400000-0x00000000004BA000-memory.dmp

        memory/2316-68-0x0000000000400000-0x00000000004BA000-memory.dmp

        memory/4156-2-0x0000000000401000-0x000000000040B000-memory.dmp

        memory/4156-67-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/4156-0-0x0000000000400000-0x0000000000414000-memory.dmp