Analysis

  • max time kernel
    27s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    12-10-2024 10:24

General

  • Target

    bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe

  • Size

    135KB

  • MD5

    837f96aebc511868ffbb444c8d662310

  • SHA1

    88c93ffe46d8e1e9e1a8b2325d15af1bd813a8b1

  • SHA256

    bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ff

  • SHA512

    c2f47270a06556f427d70bf1e6e0f916b15768996620ecec9f9383d61ac6637e01bc9a3c481a54c969aeb9d186235676a6bda650b51b42c7ea492275b9793c5a

  • SSDEEP

    1536:JxqjQ+P04wsmJCecSxtWGQ5FVBXLYXzXwl4ePnVBXLYXzXwl4eP/4XCJ:sr85CecsQ5vB8DApdB8DAp34G

Malware Config

Signatures

  • Detect Neshta payload 3 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
  • Loads dropped DLL 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 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).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe
    "C:\Users\Admin\AppData\Local\Temp\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2728
    • C:\Users\Admin\AppData\Local\Temp\3582-490\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2820
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 396
        3⤵
          PID:2612

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

      Filesize

      547KB

      MD5

      cf6c595d3e5e9667667af096762fd9c4

      SHA1

      9bb44da8d7f6457099cb56e4f7d1026963dce7ce

      SHA256

      593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

      SHA512

      ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

    • C:\Users\Admin\AppData\Local\Temp\3582-490\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe

      Filesize

      95KB

      MD5

      de7499413d140af00a7e2173946e9266

      SHA1

      dd5410944fad71ca3fc282357ea03bbd9214fb21

      SHA256

      28cb11513dd6d2c8191e99c60cff4e3292367fe66fc461365ddc7d4d7ffe351f

      SHA512

      36eff03f3e3ea1313c9ce535ecb8c8d788e22769f0dc1270ed259d2195d10ff84069cb8a179c2afce542846db5fc8a6a92ed5a920e8b0cac5c6573a6bba7f057

    • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

      Filesize

      252KB

      MD5

      9e2b9928c89a9d0da1d3e8f4bd96afa7

      SHA1

      ec66cda99f44b62470c6930e5afda061579cde35

      SHA256

      8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

      SHA512

      2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

    • memory/2612-14-0x0000000000650000-0x0000000000651000-memory.dmp

      Filesize

      4KB

    • memory/2728-88-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2728-90-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2820-9-0x000007FEF518E000-0x000007FEF518F000-memory.dmp

      Filesize

      4KB

    • memory/2820-12-0x000007FEF4ED0000-0x000007FEF586D000-memory.dmp

      Filesize

      9.6MB

    • memory/2820-13-0x000007FEF4ED0000-0x000007FEF586D000-memory.dmp

      Filesize

      9.6MB

    • memory/2820-87-0x000007FEF4ED0000-0x000007FEF586D000-memory.dmp

      Filesize

      9.6MB