Analysis

  • max time kernel
    150s
  • max time network
    161s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06/12/2022, 18:18

General

  • Target

    a8a7647a3b1bbaf23227c87b7b499092b1328dfe6044ec85d237f9cae53ad81d.exe

  • Size

    296KB

  • MD5

    097e7cc2409a2587bf702d557dd3ffc0

  • SHA1

    ae642e77799bece649639474072d456083055a8d

  • SHA256

    a8a7647a3b1bbaf23227c87b7b499092b1328dfe6044ec85d237f9cae53ad81d

  • SHA512

    dac738136e8d2015045a04c04787b9d08cf53325420e2e9872a46c599de14f9dc56ecec18ea27cf5f1278a73b55deae04d188f6dd9a5766cb9870be68b25b2d0

  • SSDEEP

    6144:WY94NCbIHpoF/AluTuQD5/m9eTdopfThxOuugwwowiT:99O8IHWo8TuSdm9AYzOuugSwq

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 10 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 7 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 2 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 9 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8a7647a3b1bbaf23227c87b7b499092b1328dfe6044ec85d237f9cae53ad81d.exe
    "C:\Users\Admin\AppData\Local\Temp\a8a7647a3b1bbaf23227c87b7b499092b1328dfe6044ec85d237f9cae53ad81d.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1352
    • 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:1260
      • C:\Windows\SysWOW64\winlog.exe
        C:\Windows\system32\winlog.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
        PID:1512
  • C:\Windows\SysWOW64\DllHost.exe
    C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
    1⤵
    • Loads dropped DLL
    • Suspicious use of FindShellTrayWindow
    PID:1756

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          996B

          MD5

          94dd36c87439c46826e03001f1f6379f

          SHA1

          d8bb0d858829f7b953ed67022dc0a4aab0a1e40e

          SHA256

          ad7e5e695f32cd0531bfb18b0c0cfb4fc6fccf2b288308467977bfd4b3c449a4

          SHA512

          22ef4ca1dee86e26bb80d5536ee51b2c8f518ecf754003825ddb583af09f012aafee517ed1cd3a8842455dbdf10b36fac9cfa20e37ecda758d334f8ac8c702a0

        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\picxinh.jpg

          Filesize

          30KB

          MD5

          76d5615ccd13075bb1307b85b137e0f9

          SHA1

          ac0cb5ea13d93df5807c801abf34b209a264d9d5

          SHA256

          4c23668a90add01e4344a57a31b3a2bea96a2005e50379526e57ee6e17741605

          SHA512

          624d261171ec25316cd1a72ec7ea3f5e7ee94ab816c57144b9af6a3f5d786094ec9beb64b3a7af128d6438e3d94e123e9f21fef6a67255ce788680ce2e5c9f69

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

          Filesize

          4KB

          MD5

          caa93a948481e6bf9d990fd8dd2b80e0

          SHA1

          20e1d37059f7e56554a4e96e238206bd60cdd2cd

          SHA256

          1a5c9496cf8c5977e5f7312ac08e65c9b09539025e54d8530ba1eaa204057386

          SHA512

          41003a272a5db0403884616ead2db878ea3a02046f5175e4a2da46a558668a67a67849c800341763c37bb1faa64838a0c645227c16b6f666b71edb00659870e5

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

          Filesize

          7KB

          MD5

          fbe4bab53f74d3049ef4b306d4cd8742

          SHA1

          6504b63908997a71a65997fa31eda4ae4de013e7

          SHA256

          446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092

          SHA512

          d458ab806a3ed3d1494a13ad8a75df874a0b227cb4f337996cb82df3c4a26dc9c4fe48a664b53b052a4af123ea8d89911d9d9493870e6b5992d5621a32260c2f

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

          Filesize

          7KB

          MD5

          fbe4bab53f74d3049ef4b306d4cd8742

          SHA1

          6504b63908997a71a65997fa31eda4ae4de013e7

          SHA256

          446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092

          SHA512

          d458ab806a3ed3d1494a13ad8a75df874a0b227cb4f337996cb82df3c4a26dc9c4fe48a664b53b052a4af123ea8d89911d9d9493870e6b5992d5621a32260c2f

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

          Filesize

          424KB

          MD5

          c9f95b72ba58d796590c81ce7cf9186f

          SHA1

          818bc644d03b645333e9bba340dadc4988f7d9cd

          SHA256

          9de7e56d6bd860e767367939894eda82ff224b0430ed390be282c83fbcd7f37c

          SHA512

          209dcf8245fe5267da8aa93326e19a6f6cc57b770711d4a78b5cf3f702e679015b09dc703f482e9690dfea2f0447242da2a853b537bf512266e3170e41936b20

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

          Filesize

          24KB

          MD5

          00cb4e339bfacebc7b00035669dda0d5

          SHA1

          61b15a210f8407fa9fc043fc5ccccee9e0e408ac

          SHA256

          254ea5705bf07f5031c9333317d159588a239083152ea2339658b37ada81b926

          SHA512

          4f3fa36fd9f04011dbad2990a59b14f77a19ed8a5596c5c56f7819ae00626f5e338f5b79fa007f93b9bd603f20efa806dfc6dcb954ede2358bb6c04faefd5091

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

          Filesize

          40KB

          MD5

          c4661cf1754c36b21f5825a89717a9bd

          SHA1

          b2aea832573de6020b5afacb050adb7be8aa4deb

          SHA256

          813e047ecade776046e1da7836e893d725db75cd0fd04751c4238c50f6b29fa6

          SHA512

          ef64adbf29efb986c591df4825376e08862170a947f0aa6a02470de661e703f0960a43765fae7ec735806d8197c3e22ddb4fa5625bb1a855be7d61833663935f

        • C:\Windows\SysWOW64\inst.dat

          Filesize

          996B

          MD5

          94dd36c87439c46826e03001f1f6379f

          SHA1

          d8bb0d858829f7b953ed67022dc0a4aab0a1e40e

          SHA256

          ad7e5e695f32cd0531bfb18b0c0cfb4fc6fccf2b288308467977bfd4b3c449a4

          SHA512

          22ef4ca1dee86e26bb80d5536ee51b2c8f518ecf754003825ddb583af09f012aafee517ed1cd3a8842455dbdf10b36fac9cfa20e37ecda758d334f8ac8c702a0

        • C:\Windows\SysWOW64\pk.bin

          Filesize

          4KB

          MD5

          110e55f87380bbd57e652b5b3778cfe4

          SHA1

          d4981d315466daf7ee29b71006a7f4d4d54e04e2

          SHA256

          39ff3a25b9adb846c1f35c7ae7c38abf25f0ae96b9896b065ecfa54b1afb18bc

          SHA512

          fd0cd4210fb8a564085eecbec81a44e4899015334a2955eb278daa5fcd5249f34bafcaf5c075db6ea7c798c4420baa4fb24beab5bcd6e85867f98525108ba309

        • C:\Windows\SysWOW64\rinst.exe

          Filesize

          7KB

          MD5

          fbe4bab53f74d3049ef4b306d4cd8742

          SHA1

          6504b63908997a71a65997fa31eda4ae4de013e7

          SHA256

          446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092

          SHA512

          d458ab806a3ed3d1494a13ad8a75df874a0b227cb4f337996cb82df3c4a26dc9c4fe48a664b53b052a4af123ea8d89911d9d9493870e6b5992d5621a32260c2f

        • C:\Windows\SysWOW64\winlog.exe

          Filesize

          424KB

          MD5

          994ffae187f4e567c6efee378af66ad0

          SHA1

          0cc35d07e909b7f6595b9c698fe1a8b9b39c7def

          SHA256

          f0b707b1ab25024ba5a65f68cd4380a66ef0ce9bb880a92e1feee818854fe423

          SHA512

          bd5320327a24fbab8934395d272869bfa97d77a2ee44ac6eec8fa79b3ffbd4a049bf9dfeeb6b8cc946c295a07bd07ddba41d81c76d452d2c5587b4bf92559e0a

        • C:\Windows\SysWOW64\winloghk.dll

          Filesize

          24KB

          MD5

          9ac9028338d1b353a7cacb563bb91df7

          SHA1

          a20c5dee8f05c91686324cec2d5b092bafe58339

          SHA256

          93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c

          SHA512

          ac83c8f7b6fe913487015d8d7a2e430e917d230b6b2907150f6c4a73bf64c3a02320dddc29fea03db5df8ac5620d8a902fe7be80ba1b1bd1e6f5b8b1b016ddfe

        • C:\Windows\SysWOW64\winlogwb.dll

          Filesize

          40KB

          MD5

          21d4e01f38b5efd64ad6816fa0b44677

          SHA1

          5242d2c5b450c773b9fa3ad014a8aba9b7bb206a

          SHA256

          3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977

          SHA512

          77dae941676a56664da89c7670d29ed5402032c8040df1cc231986733c78f0dc56c41f7a276ec9ea8336e3fa2bfc68d3121048e9585bf0d8a98917d799f669b8

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

          Filesize

          7KB

          MD5

          fbe4bab53f74d3049ef4b306d4cd8742

          SHA1

          6504b63908997a71a65997fa31eda4ae4de013e7

          SHA256

          446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092

          SHA512

          d458ab806a3ed3d1494a13ad8a75df874a0b227cb4f337996cb82df3c4a26dc9c4fe48a664b53b052a4af123ea8d89911d9d9493870e6b5992d5621a32260c2f

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

          Filesize

          7KB

          MD5

          fbe4bab53f74d3049ef4b306d4cd8742

          SHA1

          6504b63908997a71a65997fa31eda4ae4de013e7

          SHA256

          446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092

          SHA512

          d458ab806a3ed3d1494a13ad8a75df874a0b227cb4f337996cb82df3c4a26dc9c4fe48a664b53b052a4af123ea8d89911d9d9493870e6b5992d5621a32260c2f

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

          Filesize

          7KB

          MD5

          fbe4bab53f74d3049ef4b306d4cd8742

          SHA1

          6504b63908997a71a65997fa31eda4ae4de013e7

          SHA256

          446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092

          SHA512

          d458ab806a3ed3d1494a13ad8a75df874a0b227cb4f337996cb82df3c4a26dc9c4fe48a664b53b052a4af123ea8d89911d9d9493870e6b5992d5621a32260c2f

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

          Filesize

          7KB

          MD5

          fbe4bab53f74d3049ef4b306d4cd8742

          SHA1

          6504b63908997a71a65997fa31eda4ae4de013e7

          SHA256

          446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092

          SHA512

          d458ab806a3ed3d1494a13ad8a75df874a0b227cb4f337996cb82df3c4a26dc9c4fe48a664b53b052a4af123ea8d89911d9d9493870e6b5992d5621a32260c2f

        • \Windows\SysWOW64\winlog.exe

          Filesize

          424KB

          MD5

          994ffae187f4e567c6efee378af66ad0

          SHA1

          0cc35d07e909b7f6595b9c698fe1a8b9b39c7def

          SHA256

          f0b707b1ab25024ba5a65f68cd4380a66ef0ce9bb880a92e1feee818854fe423

          SHA512

          bd5320327a24fbab8934395d272869bfa97d77a2ee44ac6eec8fa79b3ffbd4a049bf9dfeeb6b8cc946c295a07bd07ddba41d81c76d452d2c5587b4bf92559e0a

        • \Windows\SysWOW64\winlog.exe

          Filesize

          424KB

          MD5

          994ffae187f4e567c6efee378af66ad0

          SHA1

          0cc35d07e909b7f6595b9c698fe1a8b9b39c7def

          SHA256

          f0b707b1ab25024ba5a65f68cd4380a66ef0ce9bb880a92e1feee818854fe423

          SHA512

          bd5320327a24fbab8934395d272869bfa97d77a2ee44ac6eec8fa79b3ffbd4a049bf9dfeeb6b8cc946c295a07bd07ddba41d81c76d452d2c5587b4bf92559e0a

        • \Windows\SysWOW64\winloghk.dll

          Filesize

          24KB

          MD5

          9ac9028338d1b353a7cacb563bb91df7

          SHA1

          a20c5dee8f05c91686324cec2d5b092bafe58339

          SHA256

          93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c

          SHA512

          ac83c8f7b6fe913487015d8d7a2e430e917d230b6b2907150f6c4a73bf64c3a02320dddc29fea03db5df8ac5620d8a902fe7be80ba1b1bd1e6f5b8b1b016ddfe

        • \Windows\SysWOW64\winloghk.dll

          Filesize

          24KB

          MD5

          9ac9028338d1b353a7cacb563bb91df7

          SHA1

          a20c5dee8f05c91686324cec2d5b092bafe58339

          SHA256

          93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c

          SHA512

          ac83c8f7b6fe913487015d8d7a2e430e917d230b6b2907150f6c4a73bf64c3a02320dddc29fea03db5df8ac5620d8a902fe7be80ba1b1bd1e6f5b8b1b016ddfe

        • \Windows\SysWOW64\winloghk.dll

          Filesize

          24KB

          MD5

          9ac9028338d1b353a7cacb563bb91df7

          SHA1

          a20c5dee8f05c91686324cec2d5b092bafe58339

          SHA256

          93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c

          SHA512

          ac83c8f7b6fe913487015d8d7a2e430e917d230b6b2907150f6c4a73bf64c3a02320dddc29fea03db5df8ac5620d8a902fe7be80ba1b1bd1e6f5b8b1b016ddfe

        • \Windows\SysWOW64\winlogwb.dll

          Filesize

          40KB

          MD5

          21d4e01f38b5efd64ad6816fa0b44677

          SHA1

          5242d2c5b450c773b9fa3ad014a8aba9b7bb206a

          SHA256

          3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977

          SHA512

          77dae941676a56664da89c7670d29ed5402032c8040df1cc231986733c78f0dc56c41f7a276ec9ea8336e3fa2bfc68d3121048e9585bf0d8a98917d799f669b8

        • memory/1352-54-0x0000000075601000-0x0000000075603000-memory.dmp

          Filesize

          8KB