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Analysis

  • max time kernel
    186s
  • max time network
    190s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20/10/2022, 13:50

General

  • Target

    fe83311ce241e5b34fd0cfe567eb20039bdc8d2e6c71d02fdd2050b2a536fd2f.exe

  • Size

    27KB

  • MD5

    48ef14c9e3f77ede2d868c1fe28154b0

  • SHA1

    de131002f2034948de8cf1a714ff8c11417abf34

  • SHA256

    fe83311ce241e5b34fd0cfe567eb20039bdc8d2e6c71d02fdd2050b2a536fd2f

  • SHA512

    f9f40838845cb01a66c1504db479eb9114c798f678b5d0f5314bc1636eb2d5be04c6e3c0f4053ef099cfcd6287742ee0d11e4bbda92983a8a80b5adf36973762

  • SSDEEP

    768:r51hwke4u9Ybj+i+RTf9PuONOsC9yoYf:rVFe4rbjsZpuRv+

Malware Config

Extracted

Family

joker

C2

http://tttie.oss-cn-shenzhen.aliyuncs.com

Signatures

  • joker

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

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 3 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fe83311ce241e5b34fd0cfe567eb20039bdc8d2e6c71d02fdd2050b2a536fd2f.exe
    "C:\Users\Admin\AppData\Local\Temp\fe83311ce241e5b34fd0cfe567eb20039bdc8d2e6c71d02fdd2050b2a536fd2f.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:852
    • C:\Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe
      "C:\Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1668

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe

    Filesize

    3.8MB

    MD5

    ab982b62764e99f66bc6c93d142ad2aa

    SHA1

    402cda94b7fdfd54773cdd1fb8fbd16f2777a391

    SHA256

    e3127d24277153588925a8ae07f715d09e0b5f8af4738aa35757205a047ce4f8

    SHA512

    41f2a77eb688d9d0660834e01d5130f9439ce7abc86d80d0b7982ec293af4bd5c89b92ce71f8d0a8d4e979a863bec033ee249fbcd3c76e667534b79d6515800e

  • C:\Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe

    Filesize

    2.0MB

    MD5

    ca38f20bf0c961808fcdf0db03efaf34

    SHA1

    556381f6afd264d8011ac0ff46cf9db15e488ad4

    SHA256

    bd1abd55396f55c001b63115591be702d36f9d0aba7781806393149f4779934d

    SHA512

    9b7dec0a67454454d3112df2ef51fb62012056136011f67137ce5d05714efaf6a711003048d3761713166d648fdfa41b0474f563d1a9a2e32c31977b709bb05a

  • \Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe

    Filesize

    4.3MB

    MD5

    0e9222677098433e781a801a8d535997

    SHA1

    842420b51161486823ff4b9fea742fd6869a2fac

    SHA256

    1cbd1f9c4a194dc514cc8cc069ffbaf0d28fde450f72d363dc2ab8e360be2d2a

    SHA512

    b78c4e2bda8a53542a0c35113567f0864a9119ca231d165859700a9fd4db1980a8f857915a71e533efa956a825cf60a6715784382eeea77d956c592b60cb95b8

  • \Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe

    Filesize

    2.1MB

    MD5

    3d0428d105e0514a845d4e50b07a2116

    SHA1

    e935472c33cebb92ef58c98dd230d92366c4fefe

    SHA256

    eef20779e1d508d0663aa338536b9ba9c11ee30520a3e0632a6878d4c3855845

    SHA512

    676d40cc6ba763ca53f7277ca519e30eb8d9688b653f5ece50dcad19c1c322e4411b7de617654beea9fda61b63ede1d259f02f5c29387775eb0791a8a1bccfa6

  • \Users\Admin\AppData\Local\Temp\sbnimb.tmp\dtstop.tmp\duba_1_244.exe

    Filesize

    2.0MB

    MD5

    d738ca3f94350c5a105fb357ba7a2d16

    SHA1

    97499fb81818d2e06353e3cb105b4b9d75bd4d78

    SHA256

    672cd7a8e1e736f5b57b23e981a76d6ef4fc10f6e2e0e68c9563dcc371ec91b9

    SHA512

    a791c18faa766c5e75187b89fb33dccaf10bb811c9924c37ffc7d4803188051ed0c35be22810cb7fdc87c076fb567cc0859caeb1c323132a9188c69ce825ebba

  • memory/852-54-0x0000000075ED1000-0x0000000075ED3000-memory.dmp

    Filesize

    8KB

  • memory/852-57-0x0000000000020000-0x0000000000034000-memory.dmp

    Filesize

    80KB

  • memory/852-56-0x0000000000020000-0x0000000000034000-memory.dmp

    Filesize

    80KB

  • memory/852-55-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/852-58-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/852-59-0x0000000000020000-0x0000000000034000-memory.dmp

    Filesize

    80KB