Analysis

  • max time kernel
    151s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2022, 11:02

General

  • Target

    76a873fc5fa3df00e191c5f76085437659b7ee294097f1dfb1ab584b86e5dfc3.exe

  • Size

    14.8MB

  • MD5

    05c9940980352eaeffd294d433695fb8

  • SHA1

    40e876cd81b9bc6190e61d938a025008ede992f9

  • SHA256

    76a873fc5fa3df00e191c5f76085437659b7ee294097f1dfb1ab584b86e5dfc3

  • SHA512

    d69125e4ef8c8b184807007e206eaa693beabfd4beb660a8d65ee8b4524e54e2a91bdfb2b8ef7ae0141ca1336003fcb0d17deaeb6a1157e050d4f671f454e776

  • SSDEEP

    98304:WLu13/Jk2Ph05e+g3XBBqa2ZZzRTC0rBC3FO:WikgcN8BBYFTC0rBC3s

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

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

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\76a873fc5fa3df00e191c5f76085437659b7ee294097f1dfb1ab584b86e5dfc3.exe
    "C:\Users\Admin\AppData\Local\Temp\76a873fc5fa3df00e191c5f76085437659b7ee294097f1dfb1ab584b86e5dfc3.exe"
    1⤵
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet && wmic shadowcopy delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1708
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:976
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^[autorun^] >autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:2040
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^open^=KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:1892
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^execute=^KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:1524
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1432

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\autorun.inf

          Filesize

          37B

          MD5

          3883f693b2911e7b9cabaf1d89601ebd

          SHA1

          a733bc5b66e5b7beb1ab54ce430ff16cdb935fcb

          SHA256

          747ea7ec54ee0bc9b637867de0c451df65c840f757988f5a3b6e3fe6c73ab1b6

          SHA512

          41fb0555004f392f2c67fd7675d2aea2a7a28a4f51d92237fdaff2d60624c559a5401335887b66f49a721dff669f8f9bd150fde0afe0845eb366309ca1088a98

        • C:\Users\Admin\AppData\Local\Temp\autorun.inf

          Filesize

          65B

          MD5

          fbefa88e6b51c05dd63d97dfdbeb3589

          SHA1

          67e09918d878c6615befab5dc9194439027f268d

          SHA256

          3861acedffd29452d2fdb96728f7347652bde9353915d3873a7414843f49b8b1

          SHA512

          58f8c1a64f2eb21be7b96db335d1ade0ce0878566a8386b3689b650132ca28e14761b20fdfe50f2af9915dff2bdd3a5b07f6f3ed082e4e6998ec5f0cd052f12f

        • C:\Users\Admin\AppData\Local\Temp\autorun.inf

          Filesize

          65B

          MD5

          fbefa88e6b51c05dd63d97dfdbeb3589

          SHA1

          67e09918d878c6615befab5dc9194439027f268d

          SHA256

          3861acedffd29452d2fdb96728f7347652bde9353915d3873a7414843f49b8b1

          SHA512

          58f8c1a64f2eb21be7b96db335d1ade0ce0878566a8386b3689b650132ca28e14761b20fdfe50f2af9915dff2bdd3a5b07f6f3ed082e4e6998ec5f0cd052f12f

        • memory/536-54-0x00000000003E0000-0x00000000003E8000-memory.dmp

          Filesize

          32KB

        • memory/536-55-0x0000000075B11000-0x0000000075B13000-memory.dmp

          Filesize

          8KB