Analysis

  • max time kernel
    91s
  • max time network
    94s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    10-07-2020 12:10

General

  • Target

    b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe

  • Size

    242KB

  • MD5

    62231fa0b731bd0aac1c55bd8ed15898

  • SHA1

    d3dd155f601bb80e417b9b0a6cf294215107af46

  • SHA256

    b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3

  • SHA512

    6539e010a88784c5c6c605038b2edb38c06d060543140e08c405025fd4c825f281e78993309a82dabb26148d5ad5eaf5eb0ea87f9fe95a520cd59d9c508c683c

Malware Config

Extracted

Family

azorult

C2

http://195.245.112.115/index.php

Extracted

Family

oski

C2

raymond.ug

Signatures

  • Azorult

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

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 1 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe
    "C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4016
    • C:\Users\Admin\AppData\Local\Temp\osaz.exe
      "C:\Users\Admin\AppData\Local\Temp\osaz.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:3932
      • C:\Users\Admin\AppData\Local\Temp\osaz.exe
        "{path}"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious use of WriteProcessMemory
        PID:2004
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /pid 2004 & erase C:\Users\Admin\AppData\Local\Temp\osaz.exe & RD /S /Q C:\\ProgramData\\651497815684615\\* & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2676
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /pid 2004
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:2124
    • C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe
      "{path}"
      2⤵
        PID:3796
      • C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe
        "{path}"
        2⤵
          PID:3744

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        MD5

        55a24afe65e5d8459cc31973277d1909

        SHA1

        5c045b7d2c2a083ac65927519dd85339c7b58aa5

        SHA256

        8959562f5a87f40b9c3917a98e10d68e2c459c8df9bdd9664f615af6d5b9959e

        SHA512

        5fe45d4de5b113b97e77752b25da0b4e234c78321e51d85c7a9fcea8e295394e1aa2e454c41381107b92d91a4872c86b30a67ca0604fc774459dfce2bb23a9f1

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

        MD5

        55a24afe65e5d8459cc31973277d1909

        SHA1

        5c045b7d2c2a083ac65927519dd85339c7b58aa5

        SHA256

        8959562f5a87f40b9c3917a98e10d68e2c459c8df9bdd9664f615af6d5b9959e

        SHA512

        5fe45d4de5b113b97e77752b25da0b4e234c78321e51d85c7a9fcea8e295394e1aa2e454c41381107b92d91a4872c86b30a67ca0604fc774459dfce2bb23a9f1

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

        MD5

        55a24afe65e5d8459cc31973277d1909

        SHA1

        5c045b7d2c2a083ac65927519dd85339c7b58aa5

        SHA256

        8959562f5a87f40b9c3917a98e10d68e2c459c8df9bdd9664f615af6d5b9959e

        SHA512

        5fe45d4de5b113b97e77752b25da0b4e234c78321e51d85c7a9fcea8e295394e1aa2e454c41381107b92d91a4872c86b30a67ca0604fc774459dfce2bb23a9f1

      • \ProgramData\mozglue.dll

        MD5

        8f73c08a9660691143661bf7332c3c27

        SHA1

        37fa65dd737c50fda710fdbde89e51374d0c204a

        SHA256

        3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

        SHA512

        0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

      • \ProgramData\nss3.dll

        MD5

        bfac4e3c5908856ba17d41edcd455a51

        SHA1

        8eec7e888767aa9e4cca8ff246eb2aacb9170428

        SHA256

        e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

        SHA512

        2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

      • \ProgramData\sqlite3.dll

        MD5

        e477a96c8f2b18d6b5c27bde49c990bf

        SHA1

        e980c9bf41330d1e5bd04556db4646a0210f7409

        SHA256

        16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

        SHA512

        335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

      • memory/2004-14-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2004-12-0x000000000040717B-mapping.dmp

      • memory/2004-11-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2124-24-0x0000000000000000-mapping.dmp

      • memory/2676-23-0x0000000000000000-mapping.dmp

      • memory/3744-7-0x0000000000400000-0x0000000000420000-memory.dmp

        Filesize

        128KB

      • memory/3744-6-0x000000000041A684-mapping.dmp

      • memory/3744-5-0x0000000000400000-0x0000000000420000-memory.dmp

        Filesize

        128KB

      • memory/3932-2-0x0000000000000000-mapping.dmp