Analysis

  • max time kernel
    594s
  • max time network
    601s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-06-2022 12:59

General

  • Target

    Setup.exe

  • Size

    387.1MB

  • MD5

    cc6bc8ed20240c6778caa26317730ebe

  • SHA1

    29800af4a4238442d850733ce8ec3b73a0932a63

  • SHA256

    5121fc3ddf49c3b5297a35386ff5847dc665401a2fa7b97d62628f4a00262092

  • SHA512

    8fbf9ac394bf52e8ea0cf79328151340427f0a56d678530a593d3e207f521e9be75d20f7dcf3bb6bb873c15842366833b597208a6ef80896b8ac8dbcdcc251b6

Malware Config

Extracted

Family

recordbreaker

C2

http://193.43.146.26/

http://45.133.216.170/

Signatures

  • RecordBreaker

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

  • 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
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • 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.

  • 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 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.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
    PID:1588

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    612KB

    MD5

    f07d9977430e762b563eaadc2b94bbfa

    SHA1

    da0a05b2b8d269fb73558dfcf0ed5c167f6d3877

    SHA256

    4191faf7e5eb105a0f4c5c6ed3e9e9c71014e8aa39bbee313bc92d1411e9e862

    SHA512

    6afd512e4099643bba3fc7700dd72744156b78b7bda10263ba1f8571d1e282133a433215a9222a7799f9824f244a2bc80c2816a62de1497017a4b26d562b7eaf

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

    Filesize

    1.9MB

    MD5

    f67d08e8c02574cbc2f1122c53bfb976

    SHA1

    6522992957e7e4d074947cad63189f308a80fcf2

    SHA256

    c65b7afb05ee2b2687e6280594019068c3d3829182dfe8604ce4adf2116cc46e

    SHA512

    2e9d0a211d2b085514f181852fae6e7ca6aed4d29f396348bedb59c556e39621810a9a74671566a49e126ec73a60d0f781fa9085eb407df1eefd942c18853be5

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

    Filesize

    1.0MB

    MD5

    dbf4f8dcefb8056dc6bae4b67ff810ce

    SHA1

    bbac1dd8a07c6069415c04b62747d794736d0689

    SHA256

    47b64311719000fa8c432165a0fdcdfed735d5b54977b052de915b1cbbbf9d68

    SHA512

    b572ca2f2e4a5cc93e4fcc7a18c0ae6df888aa4c55bc7da591e316927a4b5cfcbdda6e60018950be891ff3b26f470cc5cce34d217c2d35074322ab84c32a25d1

  • memory/1588-130-0x0000000000CB0000-0x0000000001513000-memory.dmp

    Filesize

    8.4MB

  • memory/1588-131-0x0000000000CB0000-0x0000000001513000-memory.dmp

    Filesize

    8.4MB

  • memory/1588-132-0x0000000000CB0000-0x0000000001513000-memory.dmp

    Filesize

    8.4MB

  • memory/1588-133-0x0000000077BA0000-0x0000000077D43000-memory.dmp

    Filesize

    1.6MB

  • memory/1588-137-0x0000000000CB0000-0x0000000001513000-memory.dmp

    Filesize

    8.4MB

  • memory/1588-138-0x0000000077BA0000-0x0000000077D43000-memory.dmp

    Filesize

    1.6MB

  • memory/1588-139-0x0000000000CB0000-0x0000000001513000-memory.dmp

    Filesize

    8.4MB

  • memory/1588-140-0x0000000077BA0000-0x0000000077D43000-memory.dmp

    Filesize

    1.6MB