Analysis

  • max time kernel
    146s
  • max time network
    91s
  • platform
    windows7_x64
  • resource
    win7v200430
  • 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 7 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 use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe
    "C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:288
    • C:\Users\Admin\AppData\Local\Temp\osaz.exe
      "C:\Users\Admin\AppData\Local\Temp\osaz.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1784
      • 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:1924
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /pid 1924 & erase C:\Users\Admin\AppData\Local\Temp\osaz.exe & RD /S /Q C:\\ProgramData\\461210471157435\\* & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1464
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /pid 1924
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1640
    • C:\Users\Admin\AppData\Local\Temp\b699a2766f106ff77377780bad431b72ef1748bf989e09f2b82fb73cf30cbde3.exe
      "{path}"
      2⤵
        PID:520

    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\msvcp140.dll

      MD5

      109f0f02fd37c84bfc7508d4227d7ed5

      SHA1

      ef7420141bb15ac334d3964082361a460bfdb975

      SHA256

      334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

      SHA512

      46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

    • \ProgramData\nss3.dll

      MD5

      bfac4e3c5908856ba17d41edcd455a51

      SHA1

      8eec7e888767aa9e4cca8ff246eb2aacb9170428

      SHA256

      e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

      SHA512

      2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

    • \ProgramData\sqlite3.dll

      MD5

      e477a96c8f2b18d6b5c27bde49c990bf

      SHA1

      e980c9bf41330d1e5bd04556db4646a0210f7409

      SHA256

      16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

      SHA512

      335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

    • \ProgramData\vcruntime140.dll

      MD5

      7587bf9cb4147022cd5681b015183046

      SHA1

      f2106306a8f6f0da5afb7fc765cfa0757ad5a628

      SHA256

      c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

      SHA512

      0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

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

      MD5

      55a24afe65e5d8459cc31973277d1909

      SHA1

      5c045b7d2c2a083ac65927519dd85339c7b58aa5

      SHA256

      8959562f5a87f40b9c3917a98e10d68e2c459c8df9bdd9664f615af6d5b9959e

      SHA512

      5fe45d4de5b113b97e77752b25da0b4e234c78321e51d85c7a9fcea8e295394e1aa2e454c41381107b92d91a4872c86b30a67ca0604fc774459dfce2bb23a9f1

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

      MD5

      55a24afe65e5d8459cc31973277d1909

      SHA1

      5c045b7d2c2a083ac65927519dd85339c7b58aa5

      SHA256

      8959562f5a87f40b9c3917a98e10d68e2c459c8df9bdd9664f615af6d5b9959e

      SHA512

      5fe45d4de5b113b97e77752b25da0b4e234c78321e51d85c7a9fcea8e295394e1aa2e454c41381107b92d91a4872c86b30a67ca0604fc774459dfce2bb23a9f1

    • memory/520-11-0x0000000000400000-0x0000000000420000-memory.dmp

      Filesize

      128KB

    • memory/520-14-0x0000000000400000-0x0000000000420000-memory.dmp

      Filesize

      128KB

    • memory/520-12-0x000000000041A684-mapping.dmp

    • memory/1464-33-0x0000000000000000-mapping.dmp

    • memory/1640-34-0x0000000000000000-mapping.dmp

    • memory/1784-8-0x0000000000000000-mapping.dmp

    • memory/1924-23-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1924-20-0x000000000040717B-mapping.dmp

    • memory/1924-19-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB