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Analysis

  • max time kernel
    153s
  • max time network
    165s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    06/12/2022, 11:21

General

  • Target

    aa5f994ffd01a7de2555f7a2d6be6f781d6da8e840924451a241312f579c1768.exe

  • Size

    262KB

  • MD5

    bf7c2e037a23e9966167c810334d77d7

  • SHA1

    26e2a09beabf753ddabb93b4706805be46718e70

  • SHA256

    aa5f994ffd01a7de2555f7a2d6be6f781d6da8e840924451a241312f579c1768

  • SHA512

    309ad1cff9c52d748bfb627cac89d2f7c104db16a3d2947bc3344b29e3bf9ab539c32fef01cf882e411604601d1cd8201e24d06d10f01e171d81c3c66ff95569

  • SSDEEP

    3072:gDrF9h20NUmzQze45ggO8/tmiG+lDe7eWQbFo90mcrWt7HrOgwcoutZ:g19RNUmzQzjgH8/tmiGqcoS

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 14 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 3 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Sets file execution options in registry 2 TTPs 64 IoCs
  • UPX packed file 16 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Windows security modification 2 TTPs 15 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Control Panel 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 43 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies registry class 24 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aa5f994ffd01a7de2555f7a2d6be6f781d6da8e840924451a241312f579c1768.exe
    "C:\Users\Admin\AppData\Local\Temp\aa5f994ffd01a7de2555f7a2d6be6f781d6da8e840924451a241312f579c1768.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1368
    • C:\Users\Admin\E696D64614\winlogon.exe
      "C:\Users\Admin\E696D64614\winlogon.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:764
      • C:\Users\Admin\E696D64614\winlogon.exe
        "C:\Users\Admin\E696D64614\winlogon.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Modifies visibility of file extensions in Explorer
        • Modifies visiblity of hidden/system files in Explorer
        • UAC bypass
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Sets file execution options in registry
        • Windows security modification
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Modifies Control Panel
        • Modifies Internet Explorer settings
        • Modifies Internet Explorer start page
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • System policy modification
        PID:392
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1708
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1708 CREDAT:275457 /prefetch:2
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:1008

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    91703cfcdd4f38ac9d6121bbea2368e7

    SHA1

    ee705608e55642efb9b08be047cf3c1db3e86b56

    SHA256

    dec510fb0dcbbc6ce999d8a023b01aae45785dcf9f768b45e6ec2507ff85eb36

    SHA512

    627b8b201fe0ee7317cf33466622c196d2b28facc217ea090847fb8aaf4ccada643c6df0ababf1c3d18e49d827a9f65e64b418d3aa96c3263b0e74fc56355ab8

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    dfbdeefdf532ef68bf9a7dc601a6414e

    SHA1

    a346383cb572e8493eb0ae2cacc69e18e346edb8

    SHA256

    82633a6451b0ae3108586c3962b4f87e0b978877e224add091963a37f9af8012

    SHA512

    81b65a7bdbeeadb65e0ced83b4842d13fef86da5241f1e2579156e3a35c69b7d9945e269b6615021b203951daf5d6cfeea30b511ad1adeab352c511880a5fef6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    dfbdeefdf532ef68bf9a7dc601a6414e

    SHA1

    a346383cb572e8493eb0ae2cacc69e18e346edb8

    SHA256

    82633a6451b0ae3108586c3962b4f87e0b978877e224add091963a37f9af8012

    SHA512

    81b65a7bdbeeadb65e0ced83b4842d13fef86da5241f1e2579156e3a35c69b7d9945e269b6615021b203951daf5d6cfeea30b511ad1adeab352c511880a5fef6

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\94L09FM3.txt

    Filesize

    601B

    MD5

    d5ad4cdbaa124ca99474b6e1c9bab1b7

    SHA1

    19315fd90a5eff30227dd124863fef918383a76b

    SHA256

    bf9c9e35cdfce0368696756ec1cd986e31cc36eb8ca389433187774651303b42

    SHA512

    d839844071f5a6ee711249b032b962c0f59626af9ff9112ef3259dc0b2652a21e084d2a2ea6b6f6d1204ba9666f025c6e94ef61416af967ac7131b75ce93dea3

  • C:\Users\Admin\E696D64614\winlogon.exe

    Filesize

    262KB

    MD5

    bf7c2e037a23e9966167c810334d77d7

    SHA1

    26e2a09beabf753ddabb93b4706805be46718e70

    SHA256

    aa5f994ffd01a7de2555f7a2d6be6f781d6da8e840924451a241312f579c1768

    SHA512

    309ad1cff9c52d748bfb627cac89d2f7c104db16a3d2947bc3344b29e3bf9ab539c32fef01cf882e411604601d1cd8201e24d06d10f01e171d81c3c66ff95569

  • C:\Users\Admin\E696D64614\winlogon.exe

    Filesize

    262KB

    MD5

    bf7c2e037a23e9966167c810334d77d7

    SHA1

    26e2a09beabf753ddabb93b4706805be46718e70

    SHA256

    aa5f994ffd01a7de2555f7a2d6be6f781d6da8e840924451a241312f579c1768

    SHA512

    309ad1cff9c52d748bfb627cac89d2f7c104db16a3d2947bc3344b29e3bf9ab539c32fef01cf882e411604601d1cd8201e24d06d10f01e171d81c3c66ff95569

  • C:\Users\Admin\E696D64614\winlogon.exe

    Filesize

    262KB

    MD5

    bf7c2e037a23e9966167c810334d77d7

    SHA1

    26e2a09beabf753ddabb93b4706805be46718e70

    SHA256

    aa5f994ffd01a7de2555f7a2d6be6f781d6da8e840924451a241312f579c1768

    SHA512

    309ad1cff9c52d748bfb627cac89d2f7c104db16a3d2947bc3344b29e3bf9ab539c32fef01cf882e411604601d1cd8201e24d06d10f01e171d81c3c66ff95569

  • \Users\Admin\E696D64614\winlogon.exe

    Filesize

    262KB

    MD5

    bf7c2e037a23e9966167c810334d77d7

    SHA1

    26e2a09beabf753ddabb93b4706805be46718e70

    SHA256

    aa5f994ffd01a7de2555f7a2d6be6f781d6da8e840924451a241312f579c1768

    SHA512

    309ad1cff9c52d748bfb627cac89d2f7c104db16a3d2947bc3344b29e3bf9ab539c32fef01cf882e411604601d1cd8201e24d06d10f01e171d81c3c66ff95569

  • \Users\Admin\E696D64614\winlogon.exe

    Filesize

    262KB

    MD5

    bf7c2e037a23e9966167c810334d77d7

    SHA1

    26e2a09beabf753ddabb93b4706805be46718e70

    SHA256

    aa5f994ffd01a7de2555f7a2d6be6f781d6da8e840924451a241312f579c1768

    SHA512

    309ad1cff9c52d748bfb627cac89d2f7c104db16a3d2947bc3344b29e3bf9ab539c32fef01cf882e411604601d1cd8201e24d06d10f01e171d81c3c66ff95569

  • memory/392-81-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/392-69-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/392-73-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/392-74-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/392-77-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/392-79-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/764-80-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/764-66-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/1368-56-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/1368-63-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/1368-59-0x00000000028E0000-0x0000000002924000-memory.dmp

    Filesize

    272KB

  • memory/1368-57-0x0000000075931000-0x0000000075933000-memory.dmp

    Filesize

    8KB