Analysis

  • max time kernel
    184s
  • max time network
    190s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2022 10:06

General

  • Target

    aab3477d4c76ae28869ebf49da7f0d45a6101b2e4b56d75a3dbdaa242abf888b.exe

  • Size

    1.1MB

  • MD5

    effbea685e7b77b9fa92604418c4f8f4

  • SHA1

    27059309b55f180b4135ace1016b4f407f26be70

  • SHA256

    aab3477d4c76ae28869ebf49da7f0d45a6101b2e4b56d75a3dbdaa242abf888b

  • SHA512

    7b0e9d7c21d1960ff76df9f8f333014793e694b85bea3eccf3db6963d496a881efd782d7ec102b4b69a8efd29929a00a070d035f914c431f97b73121076b5da1

  • SSDEEP

    24576:2NGQvfd4wzQP6ASSvTd7z/fl3F6e8P25XZkKcs9hzTQVF4CFU:UGQHuaQiWvZ7ThW2tZZcs99Q0

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 14 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aab3477d4c76ae28869ebf49da7f0d45a6101b2e4b56d75a3dbdaa242abf888b.exe
    "C:\Users\Admin\AppData\Local\Temp\aab3477d4c76ae28869ebf49da7f0d45a6101b2e4b56d75a3dbdaa242abf888b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:892
    • C:\Users\Admin\AppData\Roaming\downhill\downhill.exe
      "C:\Users\Admin\AppData\Roaming\downhill\downhill.exe" /ShowDeskTop
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      PID:616
    • C:\Users\Admin\AppData\Roaming\downhill\downhill.exe
      "C:\Users\Admin\AppData\Roaming\downhill\downhill.exe" /autorun /setuprun
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Writes to the Master Boot Record (MBR)
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:984
    • C:\Users\Admin\AppData\Roaming\downhill\downhill.exe
      "C:\Users\Admin\AppData\Roaming\downhill\downhill.exe" /setupsucc
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Writes to the Master Boot Record (MBR)
      • Suspicious behavior: EnumeratesProcesses
      PID:1372
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x474
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1576

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Bootkit

1
T1067

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\downhill\Lander.ini
    Filesize

    385B

    MD5

    a8b026c95775d16f527120d350cc3631

    SHA1

    a2a8133b83bec4a9f0baaada4f303cec885d12ba

    SHA256

    f3affca4ff95be62d54dfc2d3ec38a40e7fd035321ee63fe95b9d941a5735527

    SHA512

    c138c9a37283b9dece201067a55371c0e43209a1c4249fb84194a3e81d05a9e5e90ebf914001a4c9d82203efa2966c8ad2b70c126bc240c9d31aa10d3590ffc0

  • C:\Users\Admin\AppData\Roaming\downhill\Lander.ini
    Filesize

    448B

    MD5

    e70cd03f8ea64e0fe70e9bf7e24c4d0f

    SHA1

    f8f3e79505ddf9abfd7db5079a34463926ff52e8

    SHA256

    7e08b3b37da8376f312d6149a070ef3f203a52919599cf177599e83560c78672

    SHA512

    0daeb04ab21acb12fce040ee5bd5d007675527fcc8109292a24d9c3e264ad1de0676c83669186ecc555700436c0a76d141d3b12e8fce42ef482cf00285393967

  • C:\Users\Admin\AppData\Roaming\downhill\Lander.ini
    Filesize

    448B

    MD5

    e70cd03f8ea64e0fe70e9bf7e24c4d0f

    SHA1

    f8f3e79505ddf9abfd7db5079a34463926ff52e8

    SHA256

    7e08b3b37da8376f312d6149a070ef3f203a52919599cf177599e83560c78672

    SHA512

    0daeb04ab21acb12fce040ee5bd5d007675527fcc8109292a24d9c3e264ad1de0676c83669186ecc555700436c0a76d141d3b12e8fce42ef482cf00285393967

  • C:\Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • C:\Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • C:\Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • C:\Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • C:\Users\Admin\AppData\Roaming\downhill\lander.ini
    Filesize

    404B

    MD5

    dc9c63a7f4e6edd809e6ecf53ff9fe20

    SHA1

    84f4ee14918b5a353eee1c6f99206e7845aa1269

    SHA256

    c0c85d0f3b78062b6e8dc30f147ee50e134421909f483764f3d427155e9be153

    SHA512

    aecb8eb2da8cdfe960b14d8922247a45e34a9919c65b12538afad91ba8e47be604f4fe0d7b0ef554ca3a9165bb708e125654593ffaad069c4fab0466ce1c25a8

  • \Users\Admin\AppData\Local\Temp\nstACE5.tmp\FindProcDLL.dll
    Filesize

    3KB

    MD5

    8614c450637267afacad1645e23ba24a

    SHA1

    e7b7b09b5bbc13e910aa36316d9cc5fc5d4dcdc2

    SHA256

    0fa04f06a6de18d316832086891e9c23ae606d7784d5d5676385839b21ca2758

    SHA512

    af46cd679097584ff9a1d894a729b6397f4b3af17dff3e6f07bef257bc7e48ffa341d82daf298616cd5df1450fc5ab7435cacb70f27302b6db193f01a9f8391b

  • \Users\Admin\AppData\Local\Temp\nstACE5.tmp\System.dll
    Filesize

    11KB

    MD5

    c17103ae9072a06da581dec998343fc1

    SHA1

    b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

    SHA256

    dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

    SHA512

    d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • \Users\Admin\AppData\Roaming\downhill\downhill.exe
    Filesize

    1.3MB

    MD5

    ce25a1dd39160a76c2897033a6994b16

    SHA1

    d8fc1e6b7ede9c4aa9322607a2f9d10c423945de

    SHA256

    53822e59b4ae7c2df39d938e0a4b96f4cde12c1bdd639866e9737c996c0dc4c8

    SHA512

    a93653b7715b8ed010dcce07da0edd905203c5cf03182341de5e926f16d3f8cad3e70eda55ed8856a3f72e2570df83d82986ed2a328bd2f40b276a6d76458f65

  • memory/616-62-0x0000000000000000-mapping.dmp
  • memory/892-54-0x0000000075D01000-0x0000000075D03000-memory.dmp
    Filesize

    8KB

  • memory/892-58-0x00000000003C0000-0x00000000003C3000-memory.dmp
    Filesize

    12KB

  • memory/984-71-0x0000000000000000-mapping.dmp
  • memory/1372-74-0x0000000000000000-mapping.dmp