Analysis

  • max time kernel
    135s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-08-2024 01:31

General

  • Target

    c9447adafcde36beae4a02d6c81c820d46e4fa9481e1b708b641b3a67c98d48c.exe

  • Size

    453KB

  • MD5

    1acc4c16687d848711a9980e6ae72e50

  • SHA1

    eadc3f132e62bc29e7db686a440e411384de3b58

  • SHA256

    c9447adafcde36beae4a02d6c81c820d46e4fa9481e1b708b641b3a67c98d48c

  • SHA512

    9a744209cfd275a1e3dd8e11f1ec31335f7c4f789e4156a2e4c166b83741a6b7811a09cb7678f1bff28b5291f0dc7a254f70efecb3131ff954521c4a75408408

  • SSDEEP

    12288:pOxPkPjQeqQ1Y53KR/WX+t4K5dKKVaGiL:nEeqQq3KZUMaGs

Malware Config

Extracted

Family

arkei

Botnet

Default

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 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.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c9447adafcde36beae4a02d6c81c820d46e4fa9481e1b708b641b3a67c98d48c.exe
    "C:\Users\Admin\AppData\Local\Temp\c9447adafcde36beae4a02d6c81c820d46e4fa9481e1b708b641b3a67c98d48c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:912
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Builded.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Builded.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious use of WriteProcessMemory
      PID:944
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Builded.exe" & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3852
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 5
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\mozglue.dll

    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • C:\ProgramData\nss3.dll

    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • C:\ProgramData\sqlite3.dll

    Filesize

    630KB

    MD5

    e477a96c8f2b18d6b5c27bde49c990bf

    SHA1

    e980c9bf41330d1e5bd04556db4646a0210f7409

    SHA256

    16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

    SHA512

    335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Builded.exe

    Filesize

    107KB

    MD5

    52e9f55d274e2ee01959fe2d8297a927

    SHA1

    b16e5df39a96c81edb1e98239031b75834b07a87

    SHA256

    d180729ea9f2346e9abd7d96fc1d0ae39fa012d9660f50f79c71b9f828b88dc0

    SHA512

    2e51d8c331690ca97a05bb89490d179a0c50dae1b1e0def82aa7f023376b8ecc844a85b74e54be55695d05ee7623bb2bd064df836e5307d3687de1e6fda8cc1c

  • memory/944-8-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/944-53-0x0000000060900000-0x0000000060992000-memory.dmp

    Filesize

    584KB

  • memory/944-79-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB