Analysis

  • max time kernel
    201s
  • max time network
    212s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-11-2022 02:57

General

  • Target

    20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe

  • Size

    85KB

  • MD5

    5400250c54d1398ee64ab55de3e47e20

  • SHA1

    3fec61f9accc06f6a1b0dd56065763f1a287b2e6

  • SHA256

    20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5

  • SHA512

    d258a253683765fc7a6ab092b12edfee5ff309966d70cc2ffdc5c06672c75335cc778678ac5c385b22c347b754410c6525540a8d53eb06f1893f320d80367704

  • SSDEEP

    1536:JxqjQ+P04wsmJC0F46MXfn3wX8kmvyOoVcU61piSI:sr85Ca46fO6jeUMNI

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe
    "C:\Users\Admin\AppData\Local\Temp\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4396
    • C:\Users\Admin\AppData\Local\Temp\3582-490\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:5048
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 912
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        PID:1028

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe
    Filesize

    44KB

    MD5

    6fdeb5bb8919aa51a646fd33814679f4

    SHA1

    afa8c3af71c5927ecf19bb610dbaa1e66c551aeb

    SHA256

    ab5de66d11d059bc6bd5574288bc6db347dcd20064d7cb4c7d31d62aa0368c32

    SHA512

    bd717c113d59f7e581ae0151dd7e4805b146842418d4c38b74028842d2712d34dfce3398dc29091bc33d6eb48c985524b969d24711b40386da6b739f2f66fe10

  • C:\Users\Admin\AppData\Local\Temp\3582-490\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe
    Filesize

    44KB

    MD5

    6fdeb5bb8919aa51a646fd33814679f4

    SHA1

    afa8c3af71c5927ecf19bb610dbaa1e66c551aeb

    SHA256

    ab5de66d11d059bc6bd5574288bc6db347dcd20064d7cb4c7d31d62aa0368c32

    SHA512

    bd717c113d59f7e581ae0151dd7e4805b146842418d4c38b74028842d2712d34dfce3398dc29091bc33d6eb48c985524b969d24711b40386da6b739f2f66fe10

  • memory/1028-136-0x0000000000000000-mapping.dmp
  • memory/5048-132-0x0000000000000000-mapping.dmp
  • memory/5048-135-0x00007FFFCD290000-0x00007FFFCDCC6000-memory.dmp
    Filesize

    10.2MB