Analysis

  • max time kernel
    36s
  • max time network
    110s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    25-03-2021 18:31

General

  • Target

    EF9CD60A0EAFF97739F93B74525150DA.exe

  • Size

    112KB

  • MD5

    ef9cd60a0eaff97739f93b74525150da

  • SHA1

    8669815a5c44a34628b525a805b3523d067fe200

  • SHA256

    2d25d136b12c900209489988b87ec94520c0734f4f31d4497fa47dfefc551bb4

  • SHA512

    1aa3d37ddf8dff3688497b2b04bc94055f0292830066e774dfda11c9f32b904096fbd8e55c0c30ea33008d6a52d1c18a3bdba537581e7d9d7783e8179da5b9e8

Malware Config

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Echelon

    Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\EF9CD60A0EAFF97739F93B74525150DA.exe
    "C:\Users\Admin\AppData\Local\Temp\EF9CD60A0EAFF97739F93B74525150DA.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1052
    • C:\Users\Admin\AppData\Local\Temp\Price.exe
      "C:\Users\Admin\AppData\Local\Temp\Price.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2740
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2740 -s 2780
        3⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1672
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c C:\Windows\system32\timeout.exe 3 & del "EF9CD60A0EAFF97739F93B74525150DA.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1528
      • C:\Windows\SysWOW64\timeout.exe
        C:\Windows\system32\timeout.exe 3
        3⤵
        • Delays execution with timeout.exe
        PID:3628

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    a3f0757188bc349e171b4c063dd1ad49

    SHA1

    999579d9a79bfbba128c33970879b71a35f0ff78

    SHA256

    de0c813c379846202be0847b1acc52df12913c6278be16a21d502f66bc2c00ff

    SHA512

    85d6b072ed974196a293303b8940926071bf8ea237600819a8e223d5ba38c432c5188e9ebe206f391f46a91470bb4143bd5a66bc37c201dfc7f498efd1aa086a

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

    MD5

    a3f0757188bc349e171b4c063dd1ad49

    SHA1

    999579d9a79bfbba128c33970879b71a35f0ff78

    SHA256

    de0c813c379846202be0847b1acc52df12913c6278be16a21d502f66bc2c00ff

    SHA512

    85d6b072ed974196a293303b8940926071bf8ea237600819a8e223d5ba38c432c5188e9ebe206f391f46a91470bb4143bd5a66bc37c201dfc7f498efd1aa086a

  • \Users\Admin\AppData\Local\Temp\4210A729\mozglue.dll

    MD5

    9e682f1eb98a9d41468fc3e50f907635

    SHA1

    85e0ceca36f657ddf6547aa0744f0855a27527ee

    SHA256

    830533bb569594ec2f7c07896b90225006b90a9af108f49d6fb6bebd02428b2d

    SHA512

    230230722d61ac1089fabf3f2decfa04f9296498f8e2a2a49b1527797dca67b5a11ab8656f04087acadf873fa8976400d57c77c404eba4aff89d92b9986f32ed

  • \Users\Admin\AppData\Local\Temp\4210A729\msvcp140.dll

    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • \Users\Admin\AppData\Local\Temp\4210A729\nss3.dll

    MD5

    556ea09421a0f74d31c4c0a89a70dc23

    SHA1

    f739ba9b548ee64b13eb434a3130406d23f836e3

    SHA256

    f0e6210d4a0d48c7908d8d1c270449c91eb4523e312a61256833bfeaf699abfb

    SHA512

    2481fc80dffa8922569552c3c3ebaef8d0341b80427447a14b291ec39ea62ab9c05a75e85eef5ea7f857488cab1463c18586f9b076e2958c5a314e459045ede2

  • \Users\Admin\AppData\Local\Temp\4210A729\vcruntime140.dll

    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

  • memory/1528-12-0x0000000000000000-mapping.dmp

  • memory/1672-16-0x000001A244720000-0x000001A244721000-memory.dmp

    Filesize

    4KB

  • memory/2740-6-0x0000000000000000-mapping.dmp

  • memory/2740-9-0x00007FFEA3E10000-0x00007FFEA47FC000-memory.dmp

    Filesize

    9.9MB

  • memory/2740-10-0x0000020258B20000-0x0000020258B21000-memory.dmp

    Filesize

    4KB

  • memory/2740-14-0x0000020273110000-0x0000020273112000-memory.dmp

    Filesize

    8KB

  • memory/2740-15-0x0000020274030000-0x00000202740A0000-memory.dmp

    Filesize

    448KB

  • memory/3628-13-0x0000000000000000-mapping.dmp