Analysis

  • max time kernel
    150s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    15/10/2022, 02:12

General

  • Target

    a7e44595a13399d10fd8dcede1621e1958d9b7f339b2ad91dad8cb3a57c85c52.exe

  • Size

    8.7MB

  • MD5

    5c6352cee6e9de54c2a2f94d79e85072

  • SHA1

    2d08bfc6ba461711e15254161e06405dbb1cab55

  • SHA256

    a7e44595a13399d10fd8dcede1621e1958d9b7f339b2ad91dad8cb3a57c85c52

  • SHA512

    95e357d27484dfd804ac259cf329b27aed360f04e656eb76e869718f5c08a717a9d2f9b1c219f4923f377ac9367d8b598ce8fa94e3ad763d978542c2d6d563f7

  • SSDEEP

    98304:NLu1g9ZGlWrfTZmHqXE9ssD/QjI+1ozfLu1TIRtU:Nd9JTZksaJ+1orTRt

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\a7e44595a13399d10fd8dcede1621e1958d9b7f339b2ad91dad8cb3a57c85c52.exe
    "C:\Users\Admin\AppData\Local\Temp\a7e44595a13399d10fd8dcede1621e1958d9b7f339b2ad91dad8cb3a57c85c52.exe"
    1⤵
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1724
    • 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:2040
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:668
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^[autorun^] >autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:1656
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^open^=KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:1556
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^execute=^KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:1548
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1736

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/1724-54-0x0000000000290000-0x0000000000298000-memory.dmp

          Filesize

          32KB

        • memory/1724-55-0x0000000074B51000-0x0000000074B53000-memory.dmp

          Filesize

          8KB