Analysis

  • max time kernel
    85s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    23-07-2021 11:52

General

  • Target

    2cc476342cd37570d78bd78d54801ae2387f21d4624b2.exe

  • Size

    420KB

  • MD5

    377170928109b8cf902b223b247cab87

  • SHA1

    b1a624d5735229296d55db216a154a791c79e07a

  • SHA256

    2cc476342cd37570d78bd78d54801ae2387f21d4624b27dafac4f04e580f0dbe

  • SHA512

    596190c50d2b9196b1c18632b10d00a42dc7758bf8f8962cb433354c88ce3984474a848c19f797792b8ba33a409993571addda174613b9e1835d055845ff7594

Malware Config

Extracted

Family

azorult

C2

http://195.245.112.115/index.php

Extracted

Family

oski

C2

danielmax.ac.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.

  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
  • suricata: ET MALWARE Win32/AZORult V3.3 Client Checkin M18
  • 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 use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2cc476342cd37570d78bd78d54801ae2387f21d4624b2.exe
    "C:\Users\Admin\AppData\Local\Temp\2cc476342cd37570d78bd78d54801ae2387f21d4624b2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:528
    • C:\Users\Admin\AppData\Local\Temp\osxcjhgfd.exe
      "C:\Users\Admin\AppData\Local\Temp\osxcjhgfd.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2724
      • C:\Users\Admin\AppData\Local\Temp\osxcjhgfd.exe
        "{path}"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious use of WriteProcessMemory
        PID:664
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /pid 664 & erase C:\Users\Admin\AppData\Local\Temp\osxcjhgfd.exe & RD /S /Q C:\\ProgramData\\871226062335810\\* & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4012
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /pid 664
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:492
    • C:\Users\Admin\AppData\Local\Temp\2cc476342cd37570d78bd78d54801ae2387f21d4624b2.exe
      "{path}"
      2⤵
        PID:3312

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    2
    T1081

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    2
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\osxcjhgfd.exe
      MD5

      36d1e716d8da89c2f49be65feaeadca5

      SHA1

      de207b3884076d903b319b6ea613ed2cf994467e

      SHA256

      a75dfa3f50185888ffb86758b2b1c71e32491eed8af52c86ceb975e868551f93

      SHA512

      16542ba1044fdd22787ffb2eec594c94beb3b8a2fb9c7984ce116408a3c9b3340a6015a3170ea58de21026e626718fc75faa6f67c9688137f4014f705d44f1b0

    • C:\Users\Admin\AppData\Local\Temp\osxcjhgfd.exe
      MD5

      36d1e716d8da89c2f49be65feaeadca5

      SHA1

      de207b3884076d903b319b6ea613ed2cf994467e

      SHA256

      a75dfa3f50185888ffb86758b2b1c71e32491eed8af52c86ceb975e868551f93

      SHA512

      16542ba1044fdd22787ffb2eec594c94beb3b8a2fb9c7984ce116408a3c9b3340a6015a3170ea58de21026e626718fc75faa6f67c9688137f4014f705d44f1b0

    • C:\Users\Admin\AppData\Local\Temp\osxcjhgfd.exe
      MD5

      36d1e716d8da89c2f49be65feaeadca5

      SHA1

      de207b3884076d903b319b6ea613ed2cf994467e

      SHA256

      a75dfa3f50185888ffb86758b2b1c71e32491eed8af52c86ceb975e868551f93

      SHA512

      16542ba1044fdd22787ffb2eec594c94beb3b8a2fb9c7984ce116408a3c9b3340a6015a3170ea58de21026e626718fc75faa6f67c9688137f4014f705d44f1b0

    • \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/492-154-0x0000000000000000-mapping.dmp
    • memory/528-119-0x0000000005530000-0x0000000005531000-memory.dmp
      Filesize

      4KB

    • memory/528-123-0x0000000006460000-0x0000000006462000-memory.dmp
      Filesize

      8KB

    • memory/528-124-0x00000000078C0000-0x00000000078C1000-memory.dmp
      Filesize

      4KB

    • memory/528-125-0x0000000005A80000-0x0000000005AF1000-memory.dmp
      Filesize

      452KB

    • memory/528-126-0x00000000053F0000-0x0000000005419000-memory.dmp
      Filesize

      164KB

    • memory/528-122-0x0000000005533000-0x0000000005535000-memory.dmp
      Filesize

      8KB

    • memory/528-121-0x000000000AF90000-0x000000000AF91000-memory.dmp
      Filesize

      4KB

    • memory/528-120-0x0000000005320000-0x0000000005321000-memory.dmp
      Filesize

      4KB

    • memory/528-114-0x0000000000A90000-0x0000000000A91000-memory.dmp
      Filesize

      4KB

    • memory/528-118-0x0000000005540000-0x0000000005541000-memory.dmp
      Filesize

      4KB

    • memory/528-117-0x0000000009DC0000-0x0000000009DC1000-memory.dmp
      Filesize

      4KB

    • memory/528-116-0x00000000052B0000-0x00000000052FB000-memory.dmp
      Filesize

      300KB

    • memory/664-146-0x0000000000400000-0x0000000000434000-memory.dmp
      Filesize

      208KB

    • memory/664-147-0x0000000000417A8B-mapping.dmp
    • memory/664-149-0x0000000000400000-0x0000000000434000-memory.dmp
      Filesize

      208KB

    • memory/2724-145-0x0000000004B10000-0x0000000004B4B000-memory.dmp
      Filesize

      236KB

    • memory/2724-138-0x0000000004C60000-0x0000000004C61000-memory.dmp
      Filesize

      4KB

    • memory/2724-134-0x0000000004B90000-0x0000000004BF1000-memory.dmp
      Filesize

      388KB

    • memory/2724-144-0x0000000005220000-0x00000000052A5000-memory.dmp
      Filesize

      532KB

    • memory/2724-143-0x0000000004C63000-0x0000000004C65000-memory.dmp
      Filesize

      8KB

    • memory/2724-130-0x0000000000230000-0x0000000000231000-memory.dmp
      Filesize

      4KB

    • memory/2724-127-0x0000000000000000-mapping.dmp
    • memory/3312-137-0x0000000000400000-0x0000000000420000-memory.dmp
      Filesize

      128KB

    • memory/3312-133-0x000000000041A684-mapping.dmp
    • memory/3312-131-0x0000000000400000-0x0000000000420000-memory.dmp
      Filesize

      128KB

    • memory/4012-153-0x0000000000000000-mapping.dmp