Analysis

  • max time kernel
    62s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19/09/2022, 16:27

General

  • Target

    48e2db1ecd5ea2fea5c337f899b6d76237c7ad12734491ccef0545170bf59d2f.exe

  • Size

    253KB

  • MD5

    55d86f7d4fec3548b1b176c7d9b8b8d1

  • SHA1

    e53a983a6a1ac30869e4964945334d195b4a7648

  • SHA256

    48e2db1ecd5ea2fea5c337f899b6d76237c7ad12734491ccef0545170bf59d2f

  • SHA512

    6a3313dd7023e82b075eed4ad094bbe7cc32920ef2894d76ca1202031af26445a52549caafcc8baba9960e7bacb061d598b96405911289f84df2d394e98963b4

  • SSDEEP

    3072:ZY0yj4Gi3dnYxGBMBwK9pTea9cbOPi6Q6cv/VbfSt1gNKRjPsh5zhfRVLdUfijhb:ZY94NYdB1XvqMWmvgNKRjPGlp7nWVp18

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • UPX packed file 6 IoCs

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

  • Loads dropped DLL 12 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 46 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\48e2db1ecd5ea2fea5c337f899b6d76237c7ad12734491ccef0545170bf59d2f.exe
    "C:\Users\Admin\AppData\Local\Temp\48e2db1ecd5ea2fea5c337f899b6d76237c7ad12734491ccef0545170bf59d2f.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2032
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1716
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\K2 Trainer.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\K2 Trainer.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetWindowsHookEx
        PID:1708
      • C:\Windows\SysWOW64\bpk.exe
        C:\Windows\system32\bpk.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Installs/modifies Browser Helper Object
        • Drops file in System32 directory
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1512
        • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
          "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} about:blank
          4⤵
            PID:1960

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\K2 Trainer.exe

      Filesize

      31KB

      MD5

      186314f1f61a355ac2ae7f3c88f044cf

      SHA1

      3182cc8971ec447532fb464cd093794e64f43d43

      SHA256

      82029d41d12ded406c94969c8901e355d6871dc1e18e1a1d82c05aa4b239b92a

      SHA512

      3b317cc58c742c7baf277857e33972cd01950ce2ddb85ce7cecca9175c8d5e3c444cfaec7ad821cbafdcaf024840f9a0a765c148d7dd566849f1efef602f73b3

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\K2 Trainer.exe

      Filesize

      31KB

      MD5

      186314f1f61a355ac2ae7f3c88f044cf

      SHA1

      3182cc8971ec447532fb464cd093794e64f43d43

      SHA256

      82029d41d12ded406c94969c8901e355d6871dc1e18e1a1d82c05aa4b239b92a

      SHA512

      3b317cc58c742c7baf277857e33972cd01950ce2ddb85ce7cecca9175c8d5e3c444cfaec7ad821cbafdcaf024840f9a0a765c148d7dd566849f1efef602f73b3

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\bpk.exe

      Filesize

      388KB

      MD5

      d5907401dac04be7086b02244be3050c

      SHA1

      5f2ad6e9fe52e007c0be2b1114dd88d5b6402be4

      SHA256

      0df78de18c5c969b4951f6c85962544e85e54cdf0863b7bc86cea85f78a07132

      SHA512

      d9837238e81e7da59b4379a4ed6072ed1a6945e86e76aee2fa8ad79ffdc890dba0f88a02982f62d4ac49306a1e337afd948e9589bd5cf4a8e0fee091e3c4dcfd

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\bpkhk.dll

      Filesize

      8KB

      MD5

      fac3873f279dce7bec4a0c12662052d8

      SHA1

      681756ce3c5c17f52965629d3a45f55afb8d947a

      SHA256

      03057578ba9b9e229326403b0aa0ae8538132c9c6f9ab9e43ef8ef563053f25d

      SHA512

      394b808074b9943e831d7178f448755d75a7fbdf91835234b8d4ce5cb894e5829c38498173271b67d59b1449189f5d878f71ed6513ef341016ca00f13a2abf90

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\bpkwb.dll

      Filesize

      40KB

      MD5

      30a9d7a4178385b41a5a6209c6096dce

      SHA1

      0584354b99f17d45ae94efbbf9235d921870ea9a

      SHA256

      eb6fedaba26f0b49566343b03ed32b22f6757ff327554a3353c7121995e04fc5

      SHA512

      f74d3d3a7c44f5174833072691eb09035f06de8bd16d4afb17370b3336882ab6e974ad6d4b9875364ab26853e48f8ccbe72534630e19c02d9eacb8ae8483aae8

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\inst.dat

      Filesize

      996B

      MD5

      8e3a50682fe644998934eef56937c723

      SHA1

      8438672d53513de3f6644cf656af818c4b3631e2

      SHA256

      4e854262d6a4cb5707664a0c16018a478ec99ba4b7039522b87e6def819d6ecf

      SHA512

      0564dce8bb2acb1ad9f954131883e38718248bf84b0712767cbf2c83ebc80d765f2be90556880112caa53c558ab4567fcf00e4cfdb58b0e31605d38f0ba6f507

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\kw.dat

      Filesize

      72B

      MD5

      6e7ef5e11d101ecbb9a59df5ea3797e2

      SHA1

      c9089c42898612f70f5d6c1b8a8d00786c974c9d

      SHA256

      0712499341ed67de45d5fe5133fd056e8d2267a802303ebc7bf276c5386b219b

      SHA512

      121bd20e3165fe8c86887d745b965bf716a8e26ae0253910d086d0643326969c36d2d87cab0577ab0dccd63bf826589a29108fc94ce2de331cb056db377618bb

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\pk.bin

      Filesize

      3KB

      MD5

      5ac215a71e0cfbcc15ba30040df514c1

      SHA1

      1cf88c070aa191350dca2a85437717b8f35fc355

      SHA256

      bacebfbe74ad33ce1bd90fcb4098dc1d3ec428e8e5bb72e2d72dfd288e2a511c

      SHA512

      ed26039a26b50a1688eed8a76f12386623967bc59b470c0a5f1212dd29fa2618d9a20a620cdf1e84dffabdf5a02bccc78d1d51ab4a2e76f3c1914937e3db6c3a

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe

      Filesize

      7KB

      MD5

      c2945ee5c57f33f8bbb6a4f6d539180b

      SHA1

      64c958603de6a1db225752e9abb87222faf24c68

      SHA256

      b6c83639513169d01356a02db1631e8f28320c8ed0cd9f485d5433d13616f349

      SHA512

      8bdd657d45ed8720c92dad611f5c41c0e8e6602444232ce23b0258a8a8c1b194b1ad6498f25292c29ed7b8deb42b220245130a87f54b34d49dd250fb31f149d4

    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe

      Filesize

      7KB

      MD5

      c2945ee5c57f33f8bbb6a4f6d539180b

      SHA1

      64c958603de6a1db225752e9abb87222faf24c68

      SHA256

      b6c83639513169d01356a02db1631e8f28320c8ed0cd9f485d5433d13616f349

      SHA512

      8bdd657d45ed8720c92dad611f5c41c0e8e6602444232ce23b0258a8a8c1b194b1ad6498f25292c29ed7b8deb42b220245130a87f54b34d49dd250fb31f149d4

    • C:\Windows\SysWOW64\bpk.exe

      Filesize

      388KB

      MD5

      0579a3ade48160490f11e7fd76ac979f

      SHA1

      f50361131af2b98c8e03c5fec0d5e72f4be5ff65

      SHA256

      449d479776f1e6b1cb88fdc81eb88b2dde423e53c648ad19a17d27d82717512d

      SHA512

      a97ef3f04ed4207e369ced8e9f21e31c33051555279736ade7b76494b8177ae13c91942e83e0d58e52b663625bd666897e97b23fe8ef61964e042b7a8d831de7

    • C:\Windows\SysWOW64\bpkhk.dll

      Filesize

      8KB

      MD5

      a9bce1d47adb3f7779809adc1c04726d

      SHA1

      265b2cd93ba894477c6a9d45b0c9ab65ea88d3b4

      SHA256

      8f70fee209f1ff4fde13b865618751e3c8cdfb454bb1b964f07c9af90e69be94

      SHA512

      ea6b0d8f2c0768c6e1e147c132c24a085c4174fb7ec565d23c774bffebae28c53a2ab60d3d279879a42f904cabb4e5268e767a44773eac648721335817fdacdb

    • C:\Windows\SysWOW64\bpkwb.dll

      Filesize

      40KB

      MD5

      f5cd91b683eed55da373d54fac54d52d

      SHA1

      83665074e3ee67dae8d0d8010a1bb07d3a6c7ef0

      SHA256

      815f893e764eb040fa19e35b66cbc04c469144575039817de0f8548f39f8327d

      SHA512

      57f74a66057472c1ebb28f666e1478797a8fb1a3b37596ba9d99930e6b6bfb98e2bb30329c31d691f75043d286db2b6d77145b6e9f42801f0719aab77712c0d9

    • C:\Windows\SysWOW64\inst.dat

      Filesize

      996B

      MD5

      8e3a50682fe644998934eef56937c723

      SHA1

      8438672d53513de3f6644cf656af818c4b3631e2

      SHA256

      4e854262d6a4cb5707664a0c16018a478ec99ba4b7039522b87e6def819d6ecf

      SHA512

      0564dce8bb2acb1ad9f954131883e38718248bf84b0712767cbf2c83ebc80d765f2be90556880112caa53c558ab4567fcf00e4cfdb58b0e31605d38f0ba6f507

    • C:\Windows\SysWOW64\kw.dat

      Filesize

      72B

      MD5

      124d2961378154312a32266e5790d980

      SHA1

      6056f762702540d5c0e3a6cff6692b4f9123cf42

      SHA256

      d289324358836cede0fea65f63a404e81fe7a5b3b261b9fac1ca9ade7186da58

      SHA512

      122b73a1e0445127320604431fef6d8eba5ef211236d98b2ad7909691b678d0a42217da2d97a752454ab24b396529849872502e1adfa855d93abf1ee18509ca5

    • C:\Windows\SysWOW64\pk.bin

      Filesize

      3KB

      MD5

      c8052859979aecb6138915291e5ad66e

      SHA1

      bd34db72689c236e7571838a0aaebce3c6e5b848

      SHA256

      47a5b55cd823cfe206c6946876973438f707e28993d7337746df9b692e15ade4

      SHA512

      27580f274dea9360f3cdc3a413537c627639d16713ce0d01d05426c45d8d834ae63f602b1c099bc8e39b502428a7cd153153e4278717ecfb5a8120c3550c117f

    • C:\Windows\SysWOW64\rinst.exe

      Filesize

      7KB

      MD5

      c2945ee5c57f33f8bbb6a4f6d539180b

      SHA1

      64c958603de6a1db225752e9abb87222faf24c68

      SHA256

      b6c83639513169d01356a02db1631e8f28320c8ed0cd9f485d5433d13616f349

      SHA512

      8bdd657d45ed8720c92dad611f5c41c0e8e6602444232ce23b0258a8a8c1b194b1ad6498f25292c29ed7b8deb42b220245130a87f54b34d49dd250fb31f149d4

    • \Users\Admin\AppData\Local\Temp\RarSFX0\K2 Trainer.exe

      Filesize

      31KB

      MD5

      186314f1f61a355ac2ae7f3c88f044cf

      SHA1

      3182cc8971ec447532fb464cd093794e64f43d43

      SHA256

      82029d41d12ded406c94969c8901e355d6871dc1e18e1a1d82c05aa4b239b92a

      SHA512

      3b317cc58c742c7baf277857e33972cd01950ce2ddb85ce7cecca9175c8d5e3c444cfaec7ad821cbafdcaf024840f9a0a765c148d7dd566849f1efef602f73b3

    • \Users\Admin\AppData\Local\Temp\RarSFX0\K2 Trainer.exe

      Filesize

      31KB

      MD5

      186314f1f61a355ac2ae7f3c88f044cf

      SHA1

      3182cc8971ec447532fb464cd093794e64f43d43

      SHA256

      82029d41d12ded406c94969c8901e355d6871dc1e18e1a1d82c05aa4b239b92a

      SHA512

      3b317cc58c742c7baf277857e33972cd01950ce2ddb85ce7cecca9175c8d5e3c444cfaec7ad821cbafdcaf024840f9a0a765c148d7dd566849f1efef602f73b3

    • \Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe

      Filesize

      7KB

      MD5

      c2945ee5c57f33f8bbb6a4f6d539180b

      SHA1

      64c958603de6a1db225752e9abb87222faf24c68

      SHA256

      b6c83639513169d01356a02db1631e8f28320c8ed0cd9f485d5433d13616f349

      SHA512

      8bdd657d45ed8720c92dad611f5c41c0e8e6602444232ce23b0258a8a8c1b194b1ad6498f25292c29ed7b8deb42b220245130a87f54b34d49dd250fb31f149d4

    • \Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe

      Filesize

      7KB

      MD5

      c2945ee5c57f33f8bbb6a4f6d539180b

      SHA1

      64c958603de6a1db225752e9abb87222faf24c68

      SHA256

      b6c83639513169d01356a02db1631e8f28320c8ed0cd9f485d5433d13616f349

      SHA512

      8bdd657d45ed8720c92dad611f5c41c0e8e6602444232ce23b0258a8a8c1b194b1ad6498f25292c29ed7b8deb42b220245130a87f54b34d49dd250fb31f149d4

    • \Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe

      Filesize

      7KB

      MD5

      c2945ee5c57f33f8bbb6a4f6d539180b

      SHA1

      64c958603de6a1db225752e9abb87222faf24c68

      SHA256

      b6c83639513169d01356a02db1631e8f28320c8ed0cd9f485d5433d13616f349

      SHA512

      8bdd657d45ed8720c92dad611f5c41c0e8e6602444232ce23b0258a8a8c1b194b1ad6498f25292c29ed7b8deb42b220245130a87f54b34d49dd250fb31f149d4

    • \Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe

      Filesize

      7KB

      MD5

      c2945ee5c57f33f8bbb6a4f6d539180b

      SHA1

      64c958603de6a1db225752e9abb87222faf24c68

      SHA256

      b6c83639513169d01356a02db1631e8f28320c8ed0cd9f485d5433d13616f349

      SHA512

      8bdd657d45ed8720c92dad611f5c41c0e8e6602444232ce23b0258a8a8c1b194b1ad6498f25292c29ed7b8deb42b220245130a87f54b34d49dd250fb31f149d4

    • \Windows\SysWOW64\bpk.exe

      Filesize

      388KB

      MD5

      0579a3ade48160490f11e7fd76ac979f

      SHA1

      f50361131af2b98c8e03c5fec0d5e72f4be5ff65

      SHA256

      449d479776f1e6b1cb88fdc81eb88b2dde423e53c648ad19a17d27d82717512d

      SHA512

      a97ef3f04ed4207e369ced8e9f21e31c33051555279736ade7b76494b8177ae13c91942e83e0d58e52b663625bd666897e97b23fe8ef61964e042b7a8d831de7

    • \Windows\SysWOW64\bpk.exe

      Filesize

      388KB

      MD5

      0579a3ade48160490f11e7fd76ac979f

      SHA1

      f50361131af2b98c8e03c5fec0d5e72f4be5ff65

      SHA256

      449d479776f1e6b1cb88fdc81eb88b2dde423e53c648ad19a17d27d82717512d

      SHA512

      a97ef3f04ed4207e369ced8e9f21e31c33051555279736ade7b76494b8177ae13c91942e83e0d58e52b663625bd666897e97b23fe8ef61964e042b7a8d831de7

    • \Windows\SysWOW64\bpkhk.dll

      Filesize

      8KB

      MD5

      a9bce1d47adb3f7779809adc1c04726d

      SHA1

      265b2cd93ba894477c6a9d45b0c9ab65ea88d3b4

      SHA256

      8f70fee209f1ff4fde13b865618751e3c8cdfb454bb1b964f07c9af90e69be94

      SHA512

      ea6b0d8f2c0768c6e1e147c132c24a085c4174fb7ec565d23c774bffebae28c53a2ab60d3d279879a42f904cabb4e5268e767a44773eac648721335817fdacdb

    • \Windows\SysWOW64\bpkhk.dll

      Filesize

      8KB

      MD5

      a9bce1d47adb3f7779809adc1c04726d

      SHA1

      265b2cd93ba894477c6a9d45b0c9ab65ea88d3b4

      SHA256

      8f70fee209f1ff4fde13b865618751e3c8cdfb454bb1b964f07c9af90e69be94

      SHA512

      ea6b0d8f2c0768c6e1e147c132c24a085c4174fb7ec565d23c774bffebae28c53a2ab60d3d279879a42f904cabb4e5268e767a44773eac648721335817fdacdb

    • \Windows\SysWOW64\bpkhk.dll

      Filesize

      8KB

      MD5

      a9bce1d47adb3f7779809adc1c04726d

      SHA1

      265b2cd93ba894477c6a9d45b0c9ab65ea88d3b4

      SHA256

      8f70fee209f1ff4fde13b865618751e3c8cdfb454bb1b964f07c9af90e69be94

      SHA512

      ea6b0d8f2c0768c6e1e147c132c24a085c4174fb7ec565d23c774bffebae28c53a2ab60d3d279879a42f904cabb4e5268e767a44773eac648721335817fdacdb

    • \Windows\SysWOW64\bpkwb.dll

      Filesize

      40KB

      MD5

      f5cd91b683eed55da373d54fac54d52d

      SHA1

      83665074e3ee67dae8d0d8010a1bb07d3a6c7ef0

      SHA256

      815f893e764eb040fa19e35b66cbc04c469144575039817de0f8548f39f8327d

      SHA512

      57f74a66057472c1ebb28f666e1478797a8fb1a3b37596ba9d99930e6b6bfb98e2bb30329c31d691f75043d286db2b6d77145b6e9f42801f0719aab77712c0d9

    • memory/1708-82-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB

    • memory/1708-92-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB

    • memory/2032-54-0x0000000076261000-0x0000000076263000-memory.dmp

      Filesize

      8KB