Analysis

  • max time kernel
    43s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    18/06/2022, 14:44

General

  • Target

    e729c14e3ba0a6eff92196a8047c3a08.exe

  • Size

    465.0MB

  • MD5

    7e399798abc1a7b3c58a814de3f021bd

  • SHA1

    dd11c9c4bfffe0685509aa0f05786c8ce417a38f

  • SHA256

    aed97d020745e4ddca304da24873a349e626b35934fb60201233040799dc4e29

  • SHA512

    578f88ce33b91a7928500a050c5223ec3d6439e494533b30863b50f59ff6be2bcbd90ad3427e447689b491ea838c9de6ae7c357897761b940b040ff4f932900b

Malware Config

Extracted

Family

recordbreaker

C2

http://146.19.247.52/

http://77.91.102.115/

Signatures

  • RecordBreaker

    RecordBreaker is an information stealer capable of downloading and executing secondary payloads written in C++.

  • suricata: ET MALWARE Generic .bin download from Dotted Quad

    suricata: ET MALWARE Generic .bin download from Dotted Quad

  • suricata: ET MALWARE Generic Stealer Config Download Request

    suricata: ET MALWARE Generic Stealer Config Download Request

  • suricata: ET MALWARE Recordbreaker Stealer CnC Checkin

    suricata: ET MALWARE Recordbreaker Stealer CnC Checkin

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 5 IoCs

    Detects Themida, an advanced Windows software protection system.

  • 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e729c14e3ba0a6eff92196a8047c3a08.exe
    "C:\Users\Admin\AppData\Local\Temp\e729c14e3ba0a6eff92196a8047c3a08.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1748
    • C:\Users\Admin\AppData\Local\Temp\Z5nEl39c.exe
      "C:\Users\Admin\AppData\Local\Temp\Z5nEl39c.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:432
      • C:\Windows\SysWOW64\schtasks.exe
        /C /create /F /sc minute /mo 5 /tn "NodeJSEnvironmentUpdateTask" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\NodeDisplay.Container.exe"
        3⤵
        • Creates scheduled task(s)
        PID:1340
      • C:\Windows\SysWOW64\schtasks.exe
        /C /Query /XML /TN "NodeJSEnvironmentUpdateTask"
        3⤵
          PID:568
        • C:\Windows\SysWOW64\schtasks.exe
          /C /create /F /tn "NodeJSEnvironmentUpdateTask" /XML "C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\hC5zF4xW4pD6iF6a.xml"
          3⤵
          • Creates scheduled task(s)
          PID:616

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Z5nEl39c.exe

      Filesize

      6.9MB

      MD5

      74744fc068f935608dff34ecd0eb1f96

      SHA1

      5e629dd17a206424302b9794f981d3e1b3b25695

      SHA256

      8a9d3071e53165637980d076f325c66630a2189b8adcff78cabe17b41d7d87b3

      SHA512

      c750062b6e9fe2c0fba5391b38553edd7cfac145a6ed2cd0a4ec7cd195b64f3fa1049154247d35494515781031ba7ac64bbac4526eedfe2cd7ef73af16d09b42

    • C:\Users\Admin\AppData\Local\Temp\Z5nEl39c.exe

      Filesize

      6.9MB

      MD5

      74744fc068f935608dff34ecd0eb1f96

      SHA1

      5e629dd17a206424302b9794f981d3e1b3b25695

      SHA256

      8a9d3071e53165637980d076f325c66630a2189b8adcff78cabe17b41d7d87b3

      SHA512

      c750062b6e9fe2c0fba5391b38553edd7cfac145a6ed2cd0a4ec7cd195b64f3fa1049154247d35494515781031ba7ac64bbac4526eedfe2cd7ef73af16d09b42

    • C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\hC5zF4xW4pD6iF6a.xml

      Filesize

      1KB

      MD5

      8d6e2c336a9f252bfadcb8fdd27aea07

      SHA1

      40316ec9a41ee48e3bf0f4e05c3bb44776600c0e

      SHA256

      dac350b9cce117269e040dcca44f1f20a64ea5c84271e89554db69a4adab817c

      SHA512

      dbb5a909eeccf5a9734e113a05ef336a8c3463f12cb902a38fd0658e562ec3878f3ccaf651402d610240ffaed93a68928db79c8e7b02a474ef603790dc36e425

    • \Users\Admin\AppData\LocalLow\mozglue.dll

      Filesize

      612KB

      MD5

      f07d9977430e762b563eaadc2b94bbfa

      SHA1

      da0a05b2b8d269fb73558dfcf0ed5c167f6d3877

      SHA256

      4191faf7e5eb105a0f4c5c6ed3e9e9c71014e8aa39bbee313bc92d1411e9e862

      SHA512

      6afd512e4099643bba3fc7700dd72744156b78b7bda10263ba1f8571d1e282133a433215a9222a7799f9824f244a2bc80c2816a62de1497017a4b26d562b7eaf

    • \Users\Admin\AppData\LocalLow\nss3.dll

      Filesize

      1.9MB

      MD5

      f67d08e8c02574cbc2f1122c53bfb976

      SHA1

      6522992957e7e4d074947cad63189f308a80fcf2

      SHA256

      c65b7afb05ee2b2687e6280594019068c3d3829182dfe8604ce4adf2116cc46e

      SHA512

      2e9d0a211d2b085514f181852fae6e7ca6aed4d29f396348bedb59c556e39621810a9a74671566a49e126ec73a60d0f781fa9085eb407df1eefd942c18853be5

    • \Users\Admin\AppData\LocalLow\sqlite3.dll

      Filesize

      1.0MB

      MD5

      dbf4f8dcefb8056dc6bae4b67ff810ce

      SHA1

      bbac1dd8a07c6069415c04b62747d794736d0689

      SHA256

      47b64311719000fa8c432165a0fdcdfed735d5b54977b052de915b1cbbbf9d68

      SHA512

      b572ca2f2e4a5cc93e4fcc7a18c0ae6df888aa4c55bc7da591e316927a4b5cfcbdda6e60018950be891ff3b26f470cc5cce34d217c2d35074322ab84c32a25d1

    • \Users\Admin\AppData\Local\Temp\Z5nEl39c.exe

      Filesize

      6.9MB

      MD5

      74744fc068f935608dff34ecd0eb1f96

      SHA1

      5e629dd17a206424302b9794f981d3e1b3b25695

      SHA256

      8a9d3071e53165637980d076f325c66630a2189b8adcff78cabe17b41d7d87b3

      SHA512

      c750062b6e9fe2c0fba5391b38553edd7cfac145a6ed2cd0a4ec7cd195b64f3fa1049154247d35494515781031ba7ac64bbac4526eedfe2cd7ef73af16d09b42

    • memory/432-72-0x0000000001050000-0x0000000001B0F000-memory.dmp

      Filesize

      10.7MB

    • memory/432-71-0x0000000001050000-0x0000000001B0F000-memory.dmp

      Filesize

      10.7MB

    • memory/432-77-0x0000000001050000-0x0000000001B0F000-memory.dmp

      Filesize

      10.7MB

    • memory/432-69-0x0000000001050000-0x0000000001B0F000-memory.dmp

      Filesize

      10.7MB

    • memory/1748-59-0x00000000002D0000-0x0000000000A5E000-memory.dmp

      Filesize

      7.6MB

    • memory/1748-70-0x00000000778E0000-0x0000000077A60000-memory.dmp

      Filesize

      1.5MB

    • memory/1748-67-0x00000000002D0000-0x0000000000A5E000-memory.dmp

      Filesize

      7.6MB

    • memory/1748-54-0x0000000076571000-0x0000000076573000-memory.dmp

      Filesize

      8KB

    • memory/1748-58-0x00000000778E0000-0x0000000077A60000-memory.dmp

      Filesize

      1.5MB

    • memory/1748-57-0x00000000002D0000-0x0000000000A5E000-memory.dmp

      Filesize

      7.6MB

    • memory/1748-56-0x00000000002D0000-0x0000000000A5E000-memory.dmp

      Filesize

      7.6MB

    • memory/1748-55-0x00000000002D0000-0x0000000000A5E000-memory.dmp

      Filesize

      7.6MB