Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-09-2022 13:19

General

  • Target

    2910537.exe

  • Size

    16KB

  • MD5

    ba2138d07b96399a92ca10e68e013df3

  • SHA1

    cb97ba4a0e70282697a107d6a6238afa87868aae

  • SHA256

    26ab2e1e2da5ccbac9b660120cc9533cc25fafdb682e97265d2180394b49b05d

  • SHA512

    5f3884ae966a241ffca27ba1ee1ff66902850d0301852d5b38cb64f593c11deec9b7ac284ba3ed5dc169ea88991d62f2dc93f441aa82027553d059224168add3

  • SSDEEP

    192:rW3fMHORB4LCuN/2d36Jcv+gkanGUUOb7d0KJkMQGEwFkFzFKgVymO+9OPfM5uLS:rWvKxLrod3662gjnB10AQb33ji8Yv/6

Malware Config

Signatures

  • Detect Neshta payload 6 IoCs
  • 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.

  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2910537.exe
    "C:\Users\Admin\AppData\Local\Temp\2910537.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4880
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3116
    • C:\Users\Admin\AppData\Local\Temp\2910537.exe
      C:\Users\Admin\AppData\Local\Temp\2910537.exe
      2⤵
        PID:4076
      • C:\Users\Admin\AppData\Local\Temp\2910537.exe
        C:\Users\Admin\AppData\Local\Temp\2910537.exe
        2⤵
        • Modifies system executable filetype association
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Modifies registry class
        PID:2004

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2004-145-0x0000000000000000-mapping.dmp

    • memory/2004-151-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2004-150-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2004-149-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2004-148-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2004-147-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2004-146-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3116-137-0x0000000005EC0000-0x0000000005F26000-memory.dmp

      Filesize

      408KB

    • memory/3116-140-0x0000000007E00000-0x000000000847A000-memory.dmp

      Filesize

      6.5MB

    • memory/3116-141-0x0000000006AC0000-0x0000000006ADA000-memory.dmp

      Filesize

      104KB

    • memory/3116-139-0x00000000065B0000-0x00000000065CE000-memory.dmp

      Filesize

      120KB

    • memory/3116-138-0x0000000005FA0000-0x0000000006006000-memory.dmp

      Filesize

      408KB

    • memory/3116-136-0x0000000005680000-0x0000000005CA8000-memory.dmp

      Filesize

      6.2MB

    • memory/3116-135-0x0000000005010000-0x0000000005046000-memory.dmp

      Filesize

      216KB

    • memory/3116-134-0x0000000000000000-mapping.dmp

    • memory/4076-144-0x0000000000000000-mapping.dmp

    • memory/4880-142-0x00000000069F0000-0x0000000006A82000-memory.dmp

      Filesize

      584KB

    • memory/4880-143-0x0000000007040000-0x00000000075E4000-memory.dmp

      Filesize

      5.6MB

    • memory/4880-132-0x00000000008C0000-0x00000000008CA000-memory.dmp

      Filesize

      40KB

    • memory/4880-133-0x0000000005F20000-0x0000000005F42000-memory.dmp

      Filesize

      136KB