Analysis

  • max time kernel
    151s
  • max time network
    186s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2022 23:04

General

  • Target

    8268206ff89ff10527e9fed4c2a201ff3dc1c2d0911a3994d768c39bb26af505.exe

  • Size

    250KB

  • MD5

    8c26f9e36a80b31395fa0c3f772b5da8

  • SHA1

    908b7eb04f016acdd72cae3ab012581aa9572e91

  • SHA256

    8268206ff89ff10527e9fed4c2a201ff3dc1c2d0911a3994d768c39bb26af505

  • SHA512

    cf2485264206e1d8b7ff4edc2029b97398f1a267e2064d9aa3a38a71ecec79d14b2307cb142e090979af437a3a5e52de707e4a6477b78d98df14ce8c1e34c528

  • SSDEEP

    6144:SY94NbU9TsoGV4I+NR/lHU+Rk1vP/T6bLgDvyHnPyqq5BfTZR:R9ObU9TsoqgbtHdIPebW6/q5VTD

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 9 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8268206ff89ff10527e9fed4c2a201ff3dc1c2d0911a3994d768c39bb26af505.exe
    "C:\Users\Admin\AppData\Local\Temp\8268206ff89ff10527e9fed4c2a201ff3dc1c2d0911a3994d768c39bb26af505.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:5084
    • 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:2556
      • 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:4716

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    428KB

    MD5

    a69c725379d8ba13f61d553cd3a427ae

    SHA1

    c9575ec533ee52973dc28d0bebc368bcbcbe2478

    SHA256

    e989aef6c31f6a8666dee0a7004b5a9be8f4b47a56f5cef13d972b191c66844e

    SHA512

    970f6e399ad8610a62d2d9da733f657ac78f50113d63aa853264034ae77ae6657f70f365ba9621a69c31344c60c80b4bec11b7c8870f58c872c0538db87454ea

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

    Filesize

    24KB

    MD5

    2e86bc0a42aed7f5beb7e5412b07c036

    SHA1

    1670a98039701604f3b19d5b6fa81207071db1ad

    SHA256

    cadb189eebaf528b83b8aefdcfc68644bd4d79f659a69294c62bcbf14e2c5840

    SHA512

    cbc107ee2f1f233d2d3324142248b7b419c8b75ae96b0cabeab90b2d5f7ca72015bb49ef5c3243e50ea03864c0e9ad47cfcf08bf1cc3be28c9a1dc8f3a689e5f

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

    Filesize

    40KB

    MD5

    63780c296f3b656448a8df159b00461c

    SHA1

    0a40bc8398d6bf6857918d88ae6cf68dffd4ac78

    SHA256

    575c3312d5379834196e1eea076951796175ca539fc0698c34b6ef80af67048e

    SHA512

    8a3897e16e873346ef02bdad91c7e43c6da066987680a6d07e6a27e88342e8631a75b224a28c061e43066a45ea91850d284acde93d4f421a1a0ecc2a432054ae

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

    Filesize

    996B

    MD5

    3389b169a194b1d05f3525be924a5d00

    SHA1

    c0fac866f0b3f2a8431abeb56b477a239c1e9373

    SHA256

    5a00cd777a858d0c0825c03e7ee5f6f4c9d6a5fd9fcaf0aa0a200b58ce1a764b

    SHA512

    c3952bbf287cd6e6de5029256aa7bd4750331227ce7416b2177b47dffc5dcd96d0546848a6a67e9cd137a966c3f91d194405c61900667ace78a3c8dd4fa5f13c

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

    Filesize

    12B

    MD5

    512decdf25bf87aa132157fa5d9bb849

    SHA1

    d626a4c1b1c32c2e0850caa27669ee5975815298

    SHA256

    67e9d6b620cde5b51010c6734ac3200ceed34d2c0f9b6aefcb50c783540d7350

    SHA512

    619c6fd877599e672a891364f799abba638164a1c7d8ab1ad05c06a62e0fb196dcc7e52b0ba90e69e3fc670956121d4f3f192f2d3f825ae60d26bd026a710369

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

    Filesize

    4KB

    MD5

    7e83f21e463757e82b21d87309881eab

    SHA1

    8d53b954a19941edd8601247ccfb7e44570644d4

    SHA256

    d0e2dbda8f44fd0f26063590e8085fa481703beeb8b95f81457c38ff1b014c24

    SHA512

    19e47cc85faf7246e1b2ed0589766aa60fc70e3fe16582a594fff54531afaa7815cb511fc88177f37af6676f9e271bdbefaba5ffc7faba2e64927bebf414c61e

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

    Filesize

    7KB

    MD5

    a455ca431e66975d886f1a8cfee8cb9f

    SHA1

    95868529973c77199b76ec593a686d9b324dee8b

    SHA256

    6bba0b8d8bf03ba15828c53e72d83d766e44b3238b55ab75348d8ce93bfd0056

    SHA512

    53e0c4edf9d91ebdea04bfb343c568190eaaeb066bc6742262f1e5943d2b27c375e1eca483419ae8753138dc2131c9d3c7742812c16863689c3bb266057c0531

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

    Filesize

    7KB

    MD5

    a455ca431e66975d886f1a8cfee8cb9f

    SHA1

    95868529973c77199b76ec593a686d9b324dee8b

    SHA256

    6bba0b8d8bf03ba15828c53e72d83d766e44b3238b55ab75348d8ce93bfd0056

    SHA512

    53e0c4edf9d91ebdea04bfb343c568190eaaeb066bc6742262f1e5943d2b27c375e1eca483419ae8753138dc2131c9d3c7742812c16863689c3bb266057c0531

  • C:\Windows\SysWOW64\bpk.exe

    Filesize

    428KB

    MD5

    bae0fb25bcf05a5da7fde8dce759ee0d

    SHA1

    bc74b07d14a63ce572755c70ceb796136d129e20

    SHA256

    b966953b0a0e0bf648b1043b4e708445b52b020a0485921138bbf3be58d9995d

    SHA512

    74a61f7712df39194b2cb77186231d5960b8bfc5b37abdf20c357471a4e8dd8a8e648161cda7b1c8ee01d422926e3b30fd5ec9c6ebbf589a4feeaeba99ca2929

  • C:\Windows\SysWOW64\bpk.exe

    Filesize

    428KB

    MD5

    bae0fb25bcf05a5da7fde8dce759ee0d

    SHA1

    bc74b07d14a63ce572755c70ceb796136d129e20

    SHA256

    b966953b0a0e0bf648b1043b4e708445b52b020a0485921138bbf3be58d9995d

    SHA512

    74a61f7712df39194b2cb77186231d5960b8bfc5b37abdf20c357471a4e8dd8a8e648161cda7b1c8ee01d422926e3b30fd5ec9c6ebbf589a4feeaeba99ca2929

  • C:\Windows\SysWOW64\bpkhk.dll

    Filesize

    24KB

    MD5

    58129986fa29f6dacd99ab45f60bcb3c

    SHA1

    7f21995794a060fc8629e0d113cf568de14c509e

    SHA256

    525414ffe5f797ebdd7de5620b75ff723de17bf8f399ffcd7ddec2d0b8a5dc4a

    SHA512

    62ade2d2eb41cd99dcd9f6d66e7966d129be20551faadcf827558e85d669f885ad144d10a87c3be7faed08103b86ab523fb6756b44f9e0ba77cdff586214701a

  • C:\Windows\SysWOW64\bpkhk.dll

    Filesize

    24KB

    MD5

    58129986fa29f6dacd99ab45f60bcb3c

    SHA1

    7f21995794a060fc8629e0d113cf568de14c509e

    SHA256

    525414ffe5f797ebdd7de5620b75ff723de17bf8f399ffcd7ddec2d0b8a5dc4a

    SHA512

    62ade2d2eb41cd99dcd9f6d66e7966d129be20551faadcf827558e85d669f885ad144d10a87c3be7faed08103b86ab523fb6756b44f9e0ba77cdff586214701a

  • C:\Windows\SysWOW64\bpkhk.dll

    Filesize

    24KB

    MD5

    58129986fa29f6dacd99ab45f60bcb3c

    SHA1

    7f21995794a060fc8629e0d113cf568de14c509e

    SHA256

    525414ffe5f797ebdd7de5620b75ff723de17bf8f399ffcd7ddec2d0b8a5dc4a

    SHA512

    62ade2d2eb41cd99dcd9f6d66e7966d129be20551faadcf827558e85d669f885ad144d10a87c3be7faed08103b86ab523fb6756b44f9e0ba77cdff586214701a

  • C:\Windows\SysWOW64\bpkwb.dll

    Filesize

    40KB

    MD5

    2e6016325548ab79e2d636640c6ec473

    SHA1

    586e2b84d46ef00e26c1686033def28e8a9995a5

    SHA256

    62e2948c3e3857e8304a657b7e7da30cdcb6842f71bd4c678a1734ebbf17198e

    SHA512

    1dc89b9e15f5835dff3203e278f000df5c0d8d93cbef5059be3f1024ef1e16ae8087a4f8e1131b20b190942984e9dc6079dfe951a52de7f4d4ad7de8721a0e86

  • C:\Windows\SysWOW64\bpkwb.dll

    Filesize

    40KB

    MD5

    2e6016325548ab79e2d636640c6ec473

    SHA1

    586e2b84d46ef00e26c1686033def28e8a9995a5

    SHA256

    62e2948c3e3857e8304a657b7e7da30cdcb6842f71bd4c678a1734ebbf17198e

    SHA512

    1dc89b9e15f5835dff3203e278f000df5c0d8d93cbef5059be3f1024ef1e16ae8087a4f8e1131b20b190942984e9dc6079dfe951a52de7f4d4ad7de8721a0e86

  • C:\Windows\SysWOW64\bpkwb.dll

    Filesize

    40KB

    MD5

    2e6016325548ab79e2d636640c6ec473

    SHA1

    586e2b84d46ef00e26c1686033def28e8a9995a5

    SHA256

    62e2948c3e3857e8304a657b7e7da30cdcb6842f71bd4c678a1734ebbf17198e

    SHA512

    1dc89b9e15f5835dff3203e278f000df5c0d8d93cbef5059be3f1024ef1e16ae8087a4f8e1131b20b190942984e9dc6079dfe951a52de7f4d4ad7de8721a0e86

  • C:\Windows\SysWOW64\inst.dat

    Filesize

    996B

    MD5

    3389b169a194b1d05f3525be924a5d00

    SHA1

    c0fac866f0b3f2a8431abeb56b477a239c1e9373

    SHA256

    5a00cd777a858d0c0825c03e7ee5f6f4c9d6a5fd9fcaf0aa0a200b58ce1a764b

    SHA512

    c3952bbf287cd6e6de5029256aa7bd4750331227ce7416b2177b47dffc5dcd96d0546848a6a67e9cd137a966c3f91d194405c61900667ace78a3c8dd4fa5f13c

  • C:\Windows\SysWOW64\kw.dat

    Filesize

    12B

    MD5

    05b07a16ee120a2034418bfa35e09a9c

    SHA1

    9a3f96a75ce12812f8edcef28fe5dd6e59411ad7

    SHA256

    6167d9f5b9fd9357b40a5cf418cf6bcd306c28d164730da65ed1980654013724

    SHA512

    c234c13229909c44964bd5d2cef4f91705b872e76746ba82be185a4bb068d3c660a9e264f4a0bcba39c32add23caee0fecf4869a2f26dec5a13c42a128d8429d

  • C:\Windows\SysWOW64\pk.bin

    Filesize

    4KB

    MD5

    6697726bf1df2d27d2b7f04d504d114f

    SHA1

    191fcf3208f71bb1e61da0fafcbdd23bf72db047

    SHA256

    656a2707405c49ad4566bbeea364be629332d72caa118254f35b5d82021f0c8b

    SHA512

    7b64c8c8f3c4d4a544cbff3c0fb680e2caa476b0ed09dcd0690a69d41e8b19f691fcc3e7fe6935a241c59f833d53b1f94fb6169889655ad7c2e27d2b0a43bce4

  • C:\Windows\SysWOW64\rinst.exe

    Filesize

    7KB

    MD5

    a455ca431e66975d886f1a8cfee8cb9f

    SHA1

    95868529973c77199b76ec593a686d9b324dee8b

    SHA256

    6bba0b8d8bf03ba15828c53e72d83d766e44b3238b55ab75348d8ce93bfd0056

    SHA512

    53e0c4edf9d91ebdea04bfb343c568190eaaeb066bc6742262f1e5943d2b27c375e1eca483419ae8753138dc2131c9d3c7742812c16863689c3bb266057c0531

  • memory/4716-153-0x0000000004DD1000-0x0000000004DD5000-memory.dmp

    Filesize

    16KB