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Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    08/11/2022, 21:52

General

  • Target

    bc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c.exe

  • Size

    617KB

  • MD5

    0e8fb5ec5566befa08c757351491cb70

  • SHA1

    236c310aa65f46e8b41111d83774e4339dd0fcac

  • SHA256

    bc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c

  • SHA512

    fcb58f9eb1f2d41826e7307b25f601eefbb6a00e8152dae8ec7beed2b379c864040fb9222adcb12dc7564979af6a03002a765ccdb61bccebbc4feed3eb41468e

  • SSDEEP

    12288:XlQzsQQ+Cq7PQVHV63VXT4d0lyxuHUsrskfeabs:VQQQZt4V16lXkdP7UskGQs

Malware Config

Signatures

  • joker

    Joker is an Android malware that targets billing and SMS fraud.

  • ASPack v2.12-2.42 2 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 43 IoCs
  • Modifies system certificate store 2 TTPs 12 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c.exe
    "C:\Users\Admin\AppData\Local\Temp\bc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c.exe"
    1⤵
    • Loads dropped DLL
    • Modifies Internet Explorer settings
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Users\Admin\AppData\Local\Temp\copybc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c.exe
      "C:\Users\Admin\AppData\Local\Temp\copybc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c.exe" C:\Users\Admin\AppData\Local\Temp\copybc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1616
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" http://jc.110160.com/ad.htm
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:336
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:336 CREDAT:275457 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:748
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x4f4
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:612

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    61KB

    MD5

    3dcf580a93972319e82cafbc047d34d5

    SHA1

    8528d2a1363e5de77dc3b1142850e51ead0f4b6b

    SHA256

    40810e31f1b69075c727e6d557f9614d5880112895ff6f4df1767e87ae5640d1

    SHA512

    98384be7218340f95dae88d1cb865f23a0b4e12855beb6e74a3752274c9b4c601e493864db777bca677a370d0a9dbffd68d94898a82014537f3a801cce839c42

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    d6252d8b424bd6098cfad692e336cd1e

    SHA1

    5f801438e4c89fefba28eb3d8fde94c5606dec69

    SHA256

    cb29e5f8eda73701b156dfa57de71ad17501f258748aa2a33282ec294786ebd8

    SHA512

    5f30bc85edf0da81bb49602beca0ac444e94708853216988b7cf7e16b49da955ca88436676ef893b6b8526490b29415dd2e2cc77890a419999707e35e2e672d6

  • C:\Users\Admin\AppData\Local\Temp\copybc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c.exe

    Filesize

    617KB

    MD5

    0e8fb5ec5566befa08c757351491cb70

    SHA1

    236c310aa65f46e8b41111d83774e4339dd0fcac

    SHA256

    bc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c

    SHA512

    fcb58f9eb1f2d41826e7307b25f601eefbb6a00e8152dae8ec7beed2b379c864040fb9222adcb12dc7564979af6a03002a765ccdb61bccebbc4feed3eb41468e

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\CUJQVBUF.txt

    Filesize

    608B

    MD5

    0aaaa953d18620027a752c28016deb92

    SHA1

    ea7cb340fde096b7bd6d2499e823707b4b6ba3c6

    SHA256

    d2f5290b4be9ff77b3071183a4df3ef8c03ce6cbd0eea232ae928e4e8bd34812

    SHA512

    9b5e17db1c73d99f90bd1d22e9811e865455dfde4bc587e5d5842cbfdecf6d0febb65c8fa6c95e761ae203df9abb1d32448d68f37184e7e7314a8ce4ddfa084a

  • \Users\Admin\AppData\Local\Temp\copybc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c.exe

    Filesize

    617KB

    MD5

    0e8fb5ec5566befa08c757351491cb70

    SHA1

    236c310aa65f46e8b41111d83774e4339dd0fcac

    SHA256

    bc2a85617df8b07e9e8627986ae7ff57e92ed1b134de91fcd6ec6e9e86da7b6c

    SHA512

    fcb58f9eb1f2d41826e7307b25f601eefbb6a00e8152dae8ec7beed2b379c864040fb9222adcb12dc7564979af6a03002a765ccdb61bccebbc4feed3eb41468e

  • memory/1044-55-0x0000000000400000-0x00000000005CD000-memory.dmp

    Filesize

    1.8MB

  • memory/1044-54-0x0000000075501000-0x0000000075503000-memory.dmp

    Filesize

    8KB

  • memory/1044-60-0x0000000004E70000-0x000000000503D000-memory.dmp

    Filesize

    1.8MB

  • memory/1044-81-0x0000000000400000-0x00000000005CD000-memory.dmp

    Filesize

    1.8MB

  • memory/1044-62-0x0000000005280000-0x0000000005290000-memory.dmp

    Filesize

    64KB

  • memory/1616-61-0x0000000000400000-0x00000000005CD000-memory.dmp

    Filesize

    1.8MB

  • memory/1616-82-0x0000000000400000-0x00000000005CD000-memory.dmp

    Filesize

    1.8MB