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Analysis

  • max time kernel
    150s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    12/10/2022, 08:41

General

  • Target

    67fe5a639525c28751b2b8492a538602846c54fd7818547dcfcd3a3f2a691533.exe

  • Size

    910KB

  • MD5

    dd9d34b2bcaf57ed5192ca1b73139a46

  • SHA1

    5b3e4f618ab14b7ac03dfd732fede5ace95d5566

  • SHA256

    67fe5a639525c28751b2b8492a538602846c54fd7818547dcfcd3a3f2a691533

  • SHA512

    ea8484bf6bf6722a5adf0417583ca267aa03704b72d39ab3fa90159e95fd298297d78f762e909330d2e71d9adf41e60f7b293a7b7f4ebcefffca2eafe5e81307

  • SSDEEP

    24576:lKKKKKKKKKKKKKKKKKN7ChBWMQ+uSJJd1BQzK:ZjLuSh1BAK

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\67fe5a639525c28751b2b8492a538602846c54fd7818547dcfcd3a3f2a691533.exe
    "C:\Users\Admin\AppData\Local\Temp\67fe5a639525c28751b2b8492a538602846c54fd7818547dcfcd3a3f2a691533.exe"
    1⤵
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1340
    • 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:1444
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1312
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^[autorun^] >autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:964
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^open^=KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:268
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^execute=^KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:1644
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1332

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    12B

    MD5

    7b74b59eb512d0797b7f12bf5176b8c4

    SHA1

    1ff3e7eea7883a65abf79353a6039dfcd518f4da

    SHA256

    50c692a2d0e822df720c66654c601a49d1d23bbe0c329624c02a97564a738a27

    SHA512

    3f46b9cddad177a21ba6b52928c739821aa108ab92da4c907a8808689782ce3fa2036381912b267b02c0daabd992f11cde0ea867082d8d336e53d8ec79435a29

  • 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/1340-54-0x0000000000280000-0x0000000000288000-memory.dmp

    Filesize

    32KB

  • memory/1340-55-0x0000000076411000-0x0000000076413000-memory.dmp

    Filesize

    8KB