Analysis

  • max time kernel
    132s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    28-10-2022 18:40

General

  • Target

    f4b632979bcf28afc1a2a56ca1c941e1e91f50d9eaa2eef9fc947ecb16f272a3.exe

  • Size

    2.8MB

  • MD5

    67e0de0635cd53bc28f088d83b8c7b3f

  • SHA1

    3f8b271c15a22394d6f99a189bc634826ab119d6

  • SHA256

    f4b632979bcf28afc1a2a56ca1c941e1e91f50d9eaa2eef9fc947ecb16f272a3

  • SHA512

    354b86c121214abd5b0000cc58be72997f2ae0bcde1b524a37e1af46f1d7f86ef53e9813e369638195496bf1d9e177be0d96181ded9d0392bd1a593f205beca7

  • SSDEEP

    49152:JqcQFTIOZeN04TDxy3jqT+NTJjl3c23spzpfYP7CD6s9HPOwesa6/96vSSSmK78o:4cQUO4TqjqT+Nldc23spzpfYP7CD62HJ

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\f4b632979bcf28afc1a2a56ca1c941e1e91f50d9eaa2eef9fc947ecb16f272a3.exe
    "C:\Users\Admin\AppData\Local\Temp\f4b632979bcf28afc1a2a56ca1c941e1e91f50d9eaa2eef9fc947ecb16f272a3.exe"
    1⤵
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1480
    • 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:876
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1752
    • 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:1720
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^execute=^KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:1104
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2008

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/876-56-0x0000000000000000-mapping.dmp

  • memory/1104-61-0x0000000000000000-mapping.dmp

  • memory/1480-54-0x0000000000C50000-0x0000000000C58000-memory.dmp

    Filesize

    32KB

  • memory/1480-55-0x0000000076201000-0x0000000076203000-memory.dmp

    Filesize

    8KB

  • memory/1656-58-0x0000000000000000-mapping.dmp

  • memory/1720-59-0x0000000000000000-mapping.dmp

  • memory/1752-57-0x0000000000000000-mapping.dmp