Analysis

  • max time kernel
    189s
  • max time network
    428s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-12-2022 00:05

General

  • Target

    705b02eacf65ae6e91755243bdfe0af4a9c13379ff692066cccbdc9a84da1f78.exe

  • Size

    735KB

  • MD5

    777b2b5a2d4556c6cb02c0e71e4b1239

  • SHA1

    58c1add8713d7357cd4ece1baf260fc06b098746

  • SHA256

    705b02eacf65ae6e91755243bdfe0af4a9c13379ff692066cccbdc9a84da1f78

  • SHA512

    4111062d8cff58bdf302e3dd19b1b48bb113d1b76848d04b56bc91e34b666191ffde7e6a3540277394c3ac9c23b0be3a7d747114a98b6046a0aa3e1ec8e96d12

  • SSDEEP

    12288:R9OFuozCW9qr3BsG0pRPCBsxXoOgGIYd9UTiMviX4/WQbreYTHwq7If:mUDBDaG0pPgGII9uF+wSowq7If

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 4 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 2 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\705b02eacf65ae6e91755243bdfe0af4a9c13379ff692066cccbdc9a84da1f78.exe
    "C:\Users\Admin\AppData\Local\Temp\705b02eacf65ae6e91755243bdfe0af4a9c13379ff692066cccbdc9a84da1f78.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4800
      • 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
        PID:2324

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    424KB

    MD5

    d220a76f9ffdff5129b58bb5d0f89c83

    SHA1

    1517d957a510895a5444a085570f617b285b3837

    SHA256

    175c4eca50a567439b81c813673c5ed6b0330ddcf38bc89a79a972f043ee69ef

    SHA512

    53e57aabe3c4da12de824d339a0bf5a7acdef81b600dcab8c05ae3480a46df0a89b5c98526166f735547a4d55a66da91216e3aecaac7c34379707b8789ef73fb

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

    Filesize

    24KB

    MD5

    2e86872afcd703c9ddaccdbe6d1738b5

    SHA1

    e9530c96153064bf649e759642b381a55b1c1c91

    SHA256

    bdad9fe09e92e26e110ec3252e35bfdd24eeb98bc5b20dfa663e6d485f47e474

    SHA512

    19806c8d4fec38437969972b1fd876b6bfe9ff22ba622b432a79cf6a9f3475801dba57bac352d163b79e6fef65dddfb21a6bc7b9972f61e9ba59270ef216116f

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

    Filesize

    40KB

    MD5

    096f828ad1fb67e2d161e7770f84b22f

    SHA1

    2a13c414303aca67c11d5485615d288d0617a678

    SHA256

    e11389c29b1c76c21c9bbe5eeebaeb379e85d2e3b8511cdc503ca8b16971ce2f

    SHA512

    27c99f8a3fb1f181f71ea66249b53c154568fb68bce330120e27305a903dbcf41054f8eaa5d2aab9d62ff970af0456d6e9faca83a18bd2cdac984c98a5f4a070

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

    Filesize

    996B

    MD5

    1ed407a1dd916f5d204abd9cca1412eb

    SHA1

    3a3ee66b5e7b28ef45d4639e5714cb5ac3cc45d9

    SHA256

    39eb1f577d3528c8790850f2f472f0b5a1fbb49b6cca7ff66aa758ebc8bcdf04

    SHA512

    828d8e64d0122e1fbb3597f5dac5c057c63d682926f7cdd2060b63bb3458c462ebedb23e2099988629d02bb6de1250d883adac132d30c596c2033184b2a64513

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

    Filesize

    24B

    MD5

    5957bd29aed5674df15cd13034115677

    SHA1

    3fad931469561d19fac009e4f5e47aedb91f6f48

    SHA256

    5a0f39673d0bf6a413a39f4e740afd6c7c73131a1c568b49f35b6f821f6fece6

    SHA512

    8880277fc3752d6543d51533c4a843f13d366e8acbafee672e7b03133818cbe2a0848a512aee0451e533ad22b5850d96d70fd586b0ab4c007e7214a4916de1ad

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

    Filesize

    4KB

    MD5

    c819cfae945147ada04e97ea13ac4011

    SHA1

    068587547b73ebbc2b7e28e85dda89649b123c7c

    SHA256

    07e7316fbb1826dc39dc06c917558cf990c861fb2af52f4221e3041642ca82c9

    SHA512

    1e4dbdf6672d35956dcb1c5e5ebc8d747f4e8147fb439301ad0ef05d35b75bc4905e53716093b94c93dc44b2233893e1324f1add063f4b97beb85a2ba22a924c

  • 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:\Windows\SysWOW64\bpk.exe

    Filesize

    424KB

    MD5

    994ffae187f4e567c6efee378af66ad0

    SHA1

    0cc35d07e909b7f6595b9c698fe1a8b9b39c7def

    SHA256

    f0b707b1ab25024ba5a65f68cd4380a66ef0ce9bb880a92e1feee818854fe423

    SHA512

    bd5320327a24fbab8934395d272869bfa97d77a2ee44ac6eec8fa79b3ffbd4a049bf9dfeeb6b8cc946c295a07bd07ddba41d81c76d452d2c5587b4bf92559e0a

  • C:\Windows\SysWOW64\bpk.exe

    Filesize

    424KB

    MD5

    994ffae187f4e567c6efee378af66ad0

    SHA1

    0cc35d07e909b7f6595b9c698fe1a8b9b39c7def

    SHA256

    f0b707b1ab25024ba5a65f68cd4380a66ef0ce9bb880a92e1feee818854fe423

    SHA512

    bd5320327a24fbab8934395d272869bfa97d77a2ee44ac6eec8fa79b3ffbd4a049bf9dfeeb6b8cc946c295a07bd07ddba41d81c76d452d2c5587b4bf92559e0a

  • C:\Windows\SysWOW64\bpkhk.dll

    Filesize

    24KB

    MD5

    9ac9028338d1b353a7cacb563bb91df7

    SHA1

    a20c5dee8f05c91686324cec2d5b092bafe58339

    SHA256

    93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c

    SHA512

    ac83c8f7b6fe913487015d8d7a2e430e917d230b6b2907150f6c4a73bf64c3a02320dddc29fea03db5df8ac5620d8a902fe7be80ba1b1bd1e6f5b8b1b016ddfe

  • C:\Windows\SysWOW64\bpkhk.dll

    Filesize

    24KB

    MD5

    9ac9028338d1b353a7cacb563bb91df7

    SHA1

    a20c5dee8f05c91686324cec2d5b092bafe58339

    SHA256

    93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c

    SHA512

    ac83c8f7b6fe913487015d8d7a2e430e917d230b6b2907150f6c4a73bf64c3a02320dddc29fea03db5df8ac5620d8a902fe7be80ba1b1bd1e6f5b8b1b016ddfe

  • C:\Windows\SysWOW64\bpkhk.dll

    Filesize

    24KB

    MD5

    9ac9028338d1b353a7cacb563bb91df7

    SHA1

    a20c5dee8f05c91686324cec2d5b092bafe58339

    SHA256

    93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c

    SHA512

    ac83c8f7b6fe913487015d8d7a2e430e917d230b6b2907150f6c4a73bf64c3a02320dddc29fea03db5df8ac5620d8a902fe7be80ba1b1bd1e6f5b8b1b016ddfe

  • C:\Windows\SysWOW64\bpkwb.dll

    Filesize

    40KB

    MD5

    21d4e01f38b5efd64ad6816fa0b44677

    SHA1

    5242d2c5b450c773b9fa3ad014a8aba9b7bb206a

    SHA256

    3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977

    SHA512

    77dae941676a56664da89c7670d29ed5402032c8040df1cc231986733c78f0dc56c41f7a276ec9ea8336e3fa2bfc68d3121048e9585bf0d8a98917d799f669b8

  • C:\Windows\SysWOW64\bpkwb.dll

    Filesize

    40KB

    MD5

    21d4e01f38b5efd64ad6816fa0b44677

    SHA1

    5242d2c5b450c773b9fa3ad014a8aba9b7bb206a

    SHA256

    3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977

    SHA512

    77dae941676a56664da89c7670d29ed5402032c8040df1cc231986733c78f0dc56c41f7a276ec9ea8336e3fa2bfc68d3121048e9585bf0d8a98917d799f669b8

  • C:\Windows\SysWOW64\bpkwb.dll

    Filesize

    40KB

    MD5

    21d4e01f38b5efd64ad6816fa0b44677

    SHA1

    5242d2c5b450c773b9fa3ad014a8aba9b7bb206a

    SHA256

    3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977

    SHA512

    77dae941676a56664da89c7670d29ed5402032c8040df1cc231986733c78f0dc56c41f7a276ec9ea8336e3fa2bfc68d3121048e9585bf0d8a98917d799f669b8

  • C:\Windows\SysWOW64\inst.dat

    Filesize

    996B

    MD5

    1ed407a1dd916f5d204abd9cca1412eb

    SHA1

    3a3ee66b5e7b28ef45d4639e5714cb5ac3cc45d9

    SHA256

    39eb1f577d3528c8790850f2f472f0b5a1fbb49b6cca7ff66aa758ebc8bcdf04

    SHA512

    828d8e64d0122e1fbb3597f5dac5c057c63d682926f7cdd2060b63bb3458c462ebedb23e2099988629d02bb6de1250d883adac132d30c596c2033184b2a64513

  • C:\Windows\SysWOW64\mc.dat

    Filesize

    24B

    MD5

    ce318959a90e031deb016da0fdd38d3d

    SHA1

    ef562b5d91aafe522bde9bb11c390e5a1b5da35a

    SHA256

    f8eb6c23cd5c3f88299cb5541117a4b47cfd181c15da0bb236bd22e4185ffa07

    SHA512

    0e3eaf7f3497f4a71ab8356f11aa80e089851601ae5a855ba509f0c79998c8544f33425caf229c89fd0cfe837ce0715ab0fb4cf51b72ae37b6527c8e80cf721e

  • C:\Windows\SysWOW64\pk.bin

    Filesize

    4KB

    MD5

    ea12b1571e076a5e9dd17c6d852b47a4

    SHA1

    050fce369a0386060296cfe3972c9095836e4cd1

    SHA256

    e23cd7c59f90b544d4ad66edbca99b83e06ed9aab7e936f3961f475ce0a0a49f

    SHA512

    6eeb12a336e7ec35a16b07eda15348508ef3d3dc3a2bce0b4301c4109ada98c2c98a1a5129b8e34938976578edc22a7dc9ab1adf1d9c84b4d237f09efee78f05

  • C:\Windows\SysWOW64\rinst.exe

    Filesize

    7KB

    MD5

    fbe4bab53f74d3049ef4b306d4cd8742

    SHA1

    6504b63908997a71a65997fa31eda4ae4de013e7

    SHA256

    446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092

    SHA512

    d458ab806a3ed3d1494a13ad8a75df874a0b227cb4f337996cb82df3c4a26dc9c4fe48a664b53b052a4af123ea8d89911d9d9493870e6b5992d5621a32260c2f

  • memory/2324-153-0x0000000002E91000-0x0000000002E95000-memory.dmp

    Filesize

    16KB